MD 280
MD 280
MD 280
Preface
Thank you for purchasing MD280 Series inverter.
Safety Precautions
The drawings presented in this instructions are sometimes shown
without covers or protective guards.Always replace the equipment’s
cover or protective guard as specified first,and the operate the
products in accordance with the instructions.
I
Preface MD280/MD280N User Manual
II
MD280/MD280N User Manual Preface
provides the user with issues and guidance on model selection, installation,
parameter setup, onsite commissioning, troubleshooting and routine repair
and maintenance. In order to use this series of inverters in a right manner,
please read this manual prior to operation, and keep this manual properly
for future reference. The customers with supporting equipment shall
distribute this manual together with the equipment to the final user.
Unpacking for Check:
1. If the model and inverter rated value on the nameplate are consistent as
the order. The box contains the equipment, certificate of conformity, user
manual and warranty card.
For the users who use this product for the first time, please read this
manual carefully prior to the use. If you have any doubt on certain functions
and performances, please consult our technical support personnel for help
so that you can use this product correctly.
III
Preface MD280/MD280N User Manual
IV
Contact
Preface ..........................................................................................................I
Chapter 1 Safety and Precautions ...........................................................10
1.1 Safety precautions ............................................................10
1.2 Precautions....................................................................... 13
Chapter 2 Product Information............................................................ - 18 -
2.1 Designation Rules.........................................................- 18 -
2.2 Nameplate ....................................................................- 18 -
2.3 MD280 Series Inverter ..................................................- 19 -
2.4 Technical Specifications ................................................- 21 -
2.5 Physical Appearance and Dimensions of Mounting Hole- 25
-
2.6 Optional Parts ...............................................................- 33 -
2.7 Routine Repair and Maintenance of Inverter ................- 33 -
2.8 Instructions on Warranty of Inverter ..............................- 35 -
2.9 Guide to Model Selection..............................................- 36 -
2.10 Guide to Selection of Brake Components ...................- 37 -
Chapter 3 Mechanical and Electrical Installation .............................. - 42 -
3.1 Mechanical Installation..................................................- 42 -
3.2 Electrical Installation .....................................................- 46 -
Chapter 4 Operation and Display........................................................ - 62 -
4.1 Introduction to Operation and Display Interface............- 62 -
4.2 Description of Function Code Viewing and Modification
Method................................................................................- 63 -
4.3 Viewing Method of Status Parameter............................- 64 -
4.4 Password Setting..........................................................- 65 -
Chapter 5 Function Parameter Table .................................................. - 68 -
Chapter 6 Parameter Description...................................................... - 108 -
Group F0 Basic Function Group .......................................- 108 -
Group F1 Motor Parameter, V/F Control Parameter .........- 118 -
Group F2 Input Terminal ...................................................- 125 -
Group F3 Output Terminal ................................................- 138 -
Group F4 Start/Stop Control..............................................- 144 -
Group F5 Auxiliary Function..............................................- 153 -
Group F6 Process Control PID Function Parameters .......- 162 -
Group F7 Swing Frequency, Fixed Length and Counting .- 166 -
Group F8 MS Speed Function and Simple PLC Function.- 174 -
Group F9 Reserved ..........................................................- 179 -
Group FA Communication Parameters .............................- 179 -
Refer to MD280F Serial Communication Protocol for details......... - 179 -
Group FB Overload and Protection...................................- 179 -
Group C The Second Motor Parameter ................................ 189
Group FF Factory Default Parameters (Reserved) ............... 190
Group FP User password ..................................................... 190
Chapter 7 EMC (Electromagnetic Compatibility) ............................. - 194 -
7.1 Definition.....................................................................- 194 -
7.2 EMC Standard Description..........................................- 194 -
7.3 EMC Guide .................................................................- 194 -
Chapter 8 Fault Diagnosis and Countermeasures .......................... - 200 -
8.1 Fault Alarm and Countermeasures .............................- 200 -
8.2 Common Fault and Resolution ...................................- 213 -
Appendix Communication Protocol.................................................. - 215 -
MD280/MD280N User Manual Preface
7
MD280/MD280N User Manual Safety and Precautions
9
Safety and Precautions MD280/MD280N User Manual
In this manual, safety precautions are divided into two types below:
Danger
z Do not use the damaged inverter or inverter with missing parts.
Otherwise, there may be risk of injury.
z Please do not install when the packing list is inconsistent with
the real name.
Danger
z Carefully handled when loading, otherwise it may damage the
inverter.
z Please don’t use the damaged driver or missing parts inverter,
there may be risk of injury.
z Do not touch components of the control system, otherwise it will
cause static electricity.
Danger
z Mount the inverter on incombustible surface like metal, and
keep away from flammable substances. Otherwise it may cause
fire.
z Do not loose the set screw of the equitment, especially the
MD280/MD280N User Manual Safety and Precautions
Caution
z Do not drop the lead wire stub or screw in the inverter.
Otherwise it may damage the inverter.
z Please install the driver in the place where there is no direct
sunlight or no vibratory.
z When more than two inverters are to be installed in one
cabinet, due attention shall be paid to the installation locations
(refer to Chapter 3 Mechanical and Electrical Installation to ensure
the heat sinking effect.
Danger
z Operation shall be performed by the professional engineering
technician. Otherwise there will be danger of electric shock.
z There shall be circuit breaker between the inverter and power
supply. Otherwise, there may be fire.
z Make sure the power is disconnected prior to the connection.
Otherwise there will be danger of electric shock.
z The earth terminal shall be earthed reliably. Otherwise there
may be danger of electric shock.
Danger
z Do not connect the input power cable to the output ends U, V
and W. Otherwise it may damage the inverter.
z Ensure the wiring meet the EMC requirements and the local
safety standard. The wire size shall be determined according to
the manual. Otherwise, accident may be caused!
z The brake resistor cannot be directly connected between the
DC bus terminals (+) and (-). Otherwise it may cause fire.
z The shiled wire should be used for encoder, and the shielding
layer shall be earthed reliably.
11
Safety and Precautions MD280/MD280N User Manual
Caution
z Please confirm whether the power voltage class is consistent
with the rated voltage of the inverter and whether the I/O cable
connecting positions are correct, and check whether the external
circuit is short circuited and whether the connecting line is firm.
Otherwise it may damage the inverter.The cover must be well
closed prior to the inverter power-on. Otherwise electric shock
may be caused.
z The inverter is free from dielectric test because this test is
performed prior to the delivery. Otherwise accident may occur.
Danger
z The cover must be well closed prior to the inverter power-on.
Otherwise electric shock may be caused!
z Whether all the external fittings are connected correctly in
accordance with the circuit provided in this manual. Otherwise
accident may occur.
Danger
z Do not open the cover of the inverter upon power-on.
Otherwise there will be danger of electric shock!
z Do not touch the inverter and its surrounding circuit with wet
hand. Otherwise there will be danger of electric shock.
z Do not touch the inverter terminals (including control terminal).
Otherwise there will be danger of electric shock.
z At power-on, the inverter will perform the security check of the
external heavy-current circuit automatically. Thus, at this time
please do not touch the terminals U, V and W, or the terminals of
motor, otherwise there will be danger of electric shock.
Danger
MD280/MD280N User Manual Safety and Precautions
Danger
z Do not touch the fan or discharge resistor to sense the
temperature. Otherwise, you may get burnt.
z Detection of signals during the operation shall only be
conducted by qualified technician. Otherwise, personal injury or
equipment damage may be caused.
Caution
z During the operation of the inverter, keep items from falling
into the equipment. Otherwise, it may damage the equipment.
z Do not start and shut down the inverter by connecting and
disconnecting the contactor. Otherwise, it may damage the
equipment.
Danger
z Do not repair and maintain the equipment with power
connection. Otherwise there will be danger of electric shock.
z Be sure to conduct repair and maintenance after the charge
LED indictor of the inverter is OFF. Otherwise, the residual
charge on the capacitor may cause personal injury.
z The inverter shall be repaired and maintained only by the
qualified person who has received professional training.
Otherwise, it may cause personal injury or equipment damage.
z Carry out parameter setting after replacing the inverter, all the
plug-ins must be plug and play when power outage.
1.2 Precautions
1.2.1 Motor Insulation Inspection
13
Safety and Precautions MD280/MD280N User Manual
When the motor is used for the first time, or when the motor is reused after
being kept, or when periodical inspection is performed, it shall conduct
motor insulation inspection so as to avoid damaging the inverter because
of the insulation fault of the motor windings. The motor wires must be
disconnected from the inverter during the insulation inspection. It is
recommended to use the 500V megameter, and the insulating resistance
measured shall be at least 5MΩ.
1.2.2 Thermal Protection of the Motor
If the ratings of the motor does not match those of the inverter, especially
when the rated power of the inverter is higher than the rated power of the
motor, the relevant motor protection parameters in the in the inverter shall
be adjusted, or thermal relay shall be mounted to protect the motor.
1.2.3 Running with Frequency higher than Standard Frequency
This inverter can provide output frequency of 0Hz to 300Hz. If the user
needs to run the inverter with frequency of more than 50Hz, please take the
resistant pressure of the mechanical devices into consideration.
1.2.4 Vibration of Mechanical Device
Since the output voltage of inverter is PWM wave and contains certain
harmonics, the temperature rise, noise and vibration of the motor will be
higher than those when it runs at standard frequency.
1.2.6 Voltage-sensitive Device or Capacitor Improving Power Factor
at the Output Side
Since the inverter output is PWM wave, if the capacitor for improving the
power factor or voltage-sensitive resistor for lightning protection is mounted
at the output side, it is easy to cause instantaneous over current in the
inverter, which may damage the inverter. It is recommended that such
devices not be used.
1.2.7 Switching Devices like Contactors Used at the Input and Output
terminal
MD280/MD280N User Manual Safety and Precautions
If a contactor is installed between the power supply and the input terminal
of the inverter, it is not allowed to use the contactor to control the
startup/stop of the inverter. If use of such contactor is unavoidable, it shall
be used with interval of at least one hour. Frequent charge and discharge
will reduce the service life of the capacitor inside the inverter. If switching
devices like contactor are installed between the output end of the inverter
and the motor, it shall ensure that the on/off operation is conducted when
the inverter has no output. Otherwise the modules in the inverter may be
damaged.
1.2.8 Use under voltage rather than rated voltag
The series inverter has lightning over current protection device, and has
certain self-protection capacity against the lightning. In applications
where lightning occurs frequently, the user shall install additional protection
devices at the front-end of the inverter.
1.2.11 Altitude and Derating
In areas with altitude of more than 1,000 meters, the heat sinking effect of
the inverter may turn poo rer due to rare air. Therefore, it needs to derate
the inverter for use. Please contact our company for technical consulting in
case of such condition.
1.2.12 Certain Special Use
If the user needs to use the inverter with the methods other than the
recommended wiring diagram in this manual, such as shared DC bus,
please consult our company.
1.2.13 Cautions of Inverter Disposal
The electrolytic capacitors on the main circuit and the PCB may explode
15
Safety and Precautions MD280/MD280N User Manual
when they are burnt.Emission of toxic gas may be generated when the
plastic parts are burnt. Please dispose the inverter as industrial wastes.
1.2.14 Adaptable Motor
4) The short circuit of the cable or motor may cause alarm or explosion of
the inverter. Therefore, please conduct insulation and short circuit test on
the newly installed motor and cable. Such test shall also be conducted
during routine maintenance. Please note that the inverter and the test
part shall be completely disconnected during the test.
MD280/MD280N User Manual Safety and Precautions
Product Information
17
Product Information MD280/MD280N User Manual
Brake Unit
Null None
B Including Brake Unit
MODEL: MD280NT7.5GB/11PB
POWER: 7.5kW-11kW
INPUT: 3PH AC380V 26A 50Hz/60Hz
OUTPUT: 3PH AC0V380V 25A 0Hz~630Hz
S/N: Barcode
Shenzhen Inovance Technology Co.,Ltd.
Fig.2-2 Nameplate
MD280/MD280N User Manual Product Information
Rated
Output
Power Input Adaptable
Inverter model Input current
capacity current Motor
Voltage
(kVA) (A) (kW)
(A)
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Product Information MD280/MD280N User Manual
Rated
Output
Power Input Adaptable
Inverter model Input current
capacity current Motor
Voltage
(kVA) (A) (kW)
(A)
Adaptable
Input Power Input Output
Inverter model Motor
Voltage Supply Current Current
(kW)
MD280NS0.4 Single 1.0 5.4 2.3 0.4
Phase
MD2800NS0.7 Range: 1.5 8.2 4.0 0.75
MD280NS1.5 -15% to 3.0 14.2 7.0 1.5
20%
MD280NS2.2 4.0 23.0 9.6 2.2
MD280NT0.7 1.5 3.4 2.1 0.75
MD280NT1.5 3.0 5.0 3.8 1.5
MD280NT2.2 4.0 5.8 5.1 2.2
MD280NT3.7G/5.5P 5.9 14.6 9.0/13.0 3.7
MD280NT5.5G/7.5P 8.9 20.5 13.0/17.0 5.5
MD280NT7.5G/11P Three 11.0 26.0 17.0/25.0 7.5
MD280NT11G/11P Phase 17.0 35.0 25.0/32.0 11.0
Range:
MD280NT15G/18.5P -15% to 21.0 38.5 32.0/37.0 15.0
MD280NT18.5G/22P 20% 30.0 46.5 37.0/45.0 18.5/22
MD280NT22G/30P 40.0 62.0 45.0/60.0 22/30
MD280NT30G/37P 57.0 76.0 60.0/75.0 30/37
MD280NT37G/45P 69.0 92.0 75.0/91.0 37/45
MD280NT45G/55P 85.0 113.0 91.0/112.0 45/55
MD280NT55G/75P 114.0 157.0 112.0/150.0 55/75
MD280/MD280N User Manual Product Information
Item Specifications
Maximum
630Hz
frequency
Carrier 0.5k to 16kHz; the carrier frequency will be automatically
frequency adjusted according to the load characteristics.
Input
Digital setting: 0.01Hz
frequency
Analog setting: maximum frequency ×0.1%
resolution
V/F control
Control mode
Vector flux control
Speed
adjustment 1:50
range
Basic function
Speed
stabilization ±1%
precision
Torque hoist Automatic torque hoist; manual torque hoist 0.1% to 30.0%
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Product Information MD280/MD280N User Manual
Item Specifications
Simple PLC
It can realize a maximum of 8 segments speed running via the
and MS speed
built-in PLC or control terminal.
running
(AVR)Auto
voltage It can keep constant output voltage automatically in case of
regulation change of mains voltage.
(AVR)
Stall over It can limit the torque automatically and prevent frequent over
current control current tripping during the running process.
Quick current Minimize the over-current fault, protect normal operation of the
limit inverter
Peripherals
It can conduct safety detections on the peripherals upon
self-detection
power-on, including earth and short circuit detections.
upon power-on
Individua-lized function
Shared DC It can realize the function that multiple inverters share the DC
bus function bus.
Textile swing
frequency Multiple triangular-wave frequency control function
control
Item Specifications
There are five digital input terminals, one of which can be used
as high-speed pulse input. There are two analog input
Input terminal terminals. AI1 can be used only as voltage input, while AI2 can
be used as voltage or current input. (It can be selected to
keyboard potentiometer input via the jumper.)
Display
and The machine has the LED keyboard,and realize parameter
LED display
Keyboard settings, status monitoring function
Operation
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Product Information MD280/MD280N User Manual
Item Specifications
Storage
-20 Celsius to +60 Celsius
temperature
MD280/MD280N User Manual Product Information
2.5.1Product Appearance
I/O Port
Bottom Mounting Hole
Fan
Inverter Nameplate
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Product Information MD280/MD280N User Manual
A
D
W
- 27 -
Product Information MD280/MD280N User Manual
Mounting Diamet
Physical Dimension Weig
Hole er of
Model ht
Mounti
A B H H1 W D (kg)
ng Hole
MD280S0.4G
MD280S0.7G
MD280S1.5G
MD280S2.2G 113 172 182 / 123 145 φ5.4 1.1
MD280T0.7G
MD280T1.5G
MD280T2.2G
MD280T3.7G/5.5P
147 236 246 / 158 165 φ5.4 2.5
MD280T5.5G/7.5P
MD280T7.5G/11P
MD280T11G/15P 150 335 322 348 224 177 Φ6 7
MD280T15G/18.5P
MD280T18.5G/22P
MD280T22G/30P 235 447 430 460 285 220 φ6.5 20
MD280T30G/37P
MD280T37G/45P
MD280T45G/55P 250 598 573 620 380 262 φ10 34
MD280T55G/75P
MD280T75G/90P
343 678 660 700 473 307 φ10 47
MD280T90G/110P
MD280T110G/132P
449 905 880 930 579 375 φ10 90
MD280T132G/160P
MD280T160G/200P 320 1168 1049 1192 440 334 φ10 98
MD280T200G/220P
MD280T220G/250P
420 1030 983 1060 650 377 φ12 130
MD280T250G/280P
MD280T280G/315P
MD280T315G/355P 520 1300 1203 1358 800 400 φ14 200
MD280T355G/400P
MD280/MD280N User Manual Product Information
Mounting Diamet
Physical Dimension Weig
Hole er of
Model ht
Mounti
A B H H1 W D (kg)
ng Hole
MD280T400G/450P
Mounting Diamet
Physical Dimension Weig
Hole er of
Model ht
Mounti
A B H H1 W D (kg)
ng Hole
MD280NS0.4G
MD280NS0.7G
MD280NS1.5G
MD280NT0.7G
MD280NT1.5G
MD280NT2.2G
MD280NT3.7G
148 236 248 / 160 183 φ5.0 2.5
MD280NT5.5G/7.5P
MD280NT7.5G/11P*
MD280NT18.5G/22P*
MD280NT30G/37P*
MD280NT37G/45P*
MD280NT75G/90P
343 678 660 700 473 307 φ10 47
MD280NT90G/110P
- 29 -
Product Information MD280/MD280N User Manual
Mounting Diamet
Physical Dimension Weig
Hole er of
Model ht
Mounti
A B H H1 W D (kg)
ng Hole
MD280NT110G/132P
449 905 880 930 579 375 φ10 90
MD280NT132G/160P
MD280NT200G/220P
MD280NT220G/250P
420 1030 983 1060 650 377 φ12 130
MD280NT250G/280P
MD280NT280G/315P
MD280NT315G/355P
MD280NT400G/450P
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Product Information MD280/MD280N User Manual
If you need such option parts, please specify when placing the order.
2.7 Routine Repair and Maintenance of Inverter
2.7.1 Routine Repair
The influence of the ambient temperature, humidity, dust and vibration will
cause the burning of the devices in the inverter, which may cause potential
fault of the inverter or reduce the service life of the inverter. Therefore, it is
necessary to carry out daily and periodical maintenance.
注意
Caution
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Product Information MD280/MD280N User Manual
注意
Caution
The repair or maintenance can be conducted only after the charge LED
is OFF and the bus voltage is measured to be less than 36V with
multimeter.
The oil stain on the inverter cooling fan shall be effectively removed.
2.7.2 Periodical inspection
The vulnerable parts of the inverter include cooling fan and filter electrolytic
capacitor, whose life depends on the operating environment and
maintenance status. Common service life:
The user can determine the term for replacement according to the running
time.
1) Cooling fan
Possible causes for damage: bearing wearing and blade aging.
Criteria: Whether there is crack on the blade and whether there is abnormal
vibration noise upon startup.
Attention shall be paid to the following points for the temporary and
long-term storage of the inverter:
1) Place the inverter back into the packing box following the original
package
2) Long-term storage will degrade the electrolytic capacitor. The product
shall be powered up once every 2 years, and the power-up time shall be no
less than 5 hours. The input voltage shall be increased slowly to the rated
value with the regulator.
2.8 Instructions on Warranty of Inverter
Free warranty only applies to the inverter itself.
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Product Information MD280/MD280N User Manual
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Product Information MD280/MD280N User Manual
Recommended Recommended
Inverter Model Power of Brake Resistance of Brake Unit Rmarks
Resistor Brake Resistor
Externally
MD280T220G/250P 22 kW ≥2.5Ω MDBU-210-B
connected
Externally
MD280T250G/280P 12.5 kW×2 ≥2.5Ω×2 MDBU-210-B×2
connected
Externally
MD280T280G/315P 14kW×2 ≥2.5Ω×2 MDBU-210-B×2
connected
Externally
MD280T315G/355P 16kW×2 ≥2.5Ω×2 MDBU-210-B×2
connected
Externally
MD280T355G/400P 17kW×2 ≥2.5Ω×2 MDBU-210-B×2
connected
Externally
MD280T400G/450P 14 kW×3 ≥2.5Ω×3 MDBU-210-B×3
connected
Caution: ×2 refers to two braking units paralleled with their respective brake
resistor; the meaning of ×3 is the same with ×2.
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Product Information MD280/MD280N User Manual
MD280/MD280N User Manual Product Information
41
Mechanical and Electrical Installation MD280/MD280N User Manual
4) The inverter shall be mounted in locations free from direct sunlight, high
humidity and condensate.
6) The inverter shall be mounted in locations free from oil dirt, dust, and
metal powder.
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MD280/MD280N User Manual Mechanical and Electrical Installation
omitted. When the inverter power is higher than 22kW, the A size shall be
higher than 50mm.
Caution: When performing up-down installation of inverter, please install the
thermal insulating guide plate as shown in the diagram.
Table.3-1 Schematic Diagram for Installation of MD280 Inverter
Mounting Dimension
Power Level
B A
≤15kW ≥100mm No requirements
18.5kW—30kW ≥200mm ≥50mm
≥37kW ≥300mm ≥50mm
Heat sinking shall be taken into account during the installation. Attention shall
be paid to the following items:
1) Install the inverter vertically so that the heat may be expelled from
the top.However, the equipment cannot be installed upside down. If there
are multiple inverters in the cabinet, parallel installation is better. In the
applications where up-down installation is required, please install the
thermal insulating guide plate referring to the schematic diagrams for
standalone installation and up-down installation.
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Mechanical and Electrical Installation MD280/MD280N User Manual
Hook Slot
- 44 -
MD280/MD280N User Manual Mechanical and Electrical Installation
Danger
When removing the lower cover, avoid the falling of the lower cover, which
may cause human injury or damage to the equipment.
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Mechanical and Electrical Installation MD280/MD280N User Manual
Table 3-1 Guide to the Selection of Peripheral Electrical Parts of MD280 Inverter
Recomme Recomme
(mm²) (mm²)
MD280S2.2G 32 20 6 4 1.5
MD280T3.7G 25 16 4 4 1.5
MD280T3.7G/5.5P 32 25 4 4 1.5
MD280T5.5G/7.5P 40 32 4 4 1.5
MD280T7.5G/11P 63 40 4 4 1.5
MD280T11G/15P 63 40 6 6 1.5
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MD280/MD280N User Manual Mechanical and Electrical Installation
Recomme Recomme
(mm²) (mm²)
Part Installation
Function Description
Name Location
Circuit The front-end of Disconnect the power supply in case of downstream equipment
Between the
input side
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Mechanical and Electrical Installation MD280/MD280N User Manual
Part Installation
Function Description
Name Location
of the inverter;
EMC Input side of the
2) Reduce the conduction interference flowing from the
input filter inverter
power end to the inverter, thus improving the
motor is far from the inverter, since there are many capacitors in
installed.
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MD280/MD280N User Manual Mechanical and Electrical Installation
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Mechanical and Electrical Installation MD280/MD280N User Manual
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MD280/MD280N User Manual Mechanical and Electrical Installation
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Mechanical and Electrical Installation MD280/MD280N User Manual
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MD280/MD280N User Manual Mechanical and Electrical Installation
Danger
z Make sure that the wiring operation shall be carried out only
when the power supply switch is in OFF position, or there may be risk
of electric shock.
z Only the professional technicians who have received training can
perform wiring, or it may cause injuries to the equipment and human
body.
z It shall be grounded reliably, or there may be risk of electric
shock or fire acciden.
注意
Caution
z Make sure that the input power supply and the rated value
of the inverter shall be consistent, or it may damage the inverter.
z Make sure that the motor is compatible with the inverter, or the
motor may be damaged or inverter protection may be caused.
z Do not connect the power supply to the U, V, W terminals, or it
may damage the inverter.
z Do not connect the brake resistor to the DC bus terminals (+) and
(-) directly, or there may be fire accident.
Connecting terminal of
(+)、PB Connect to the braking resistor
braking resistor
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Mechanical and Electrical Installation MD280/MD280N User Manual
Negative and positive Shared DC bus intput point (Connect to the external
(+)、(-)
terminals of DC bus brake unit above 37G/45P)
Output terminal of
U、V、W Connect to three-phase motor
inverter
1) Wiring Precautions
There is no sequence requirement for the wiring at the Input side of the
inverter.
The DC bus (+) and (-) terminals still have residual voltage at the time of
power-off. Do not touch the equipment until the charge LED is OFF and the
voltage measured with multimeter is less than 36V.
When selecting external brake components for the inverter of above 45kW,
note that the connecting polarity must be correct, or the inverter may be
damaged and even fire accident may occur.
The wire length of the brake unit shall not be longer than 10 meters. Twisted
wires or pair wires shall be used and connected in parallel.
Do not connect the braking resistor directly to the DC bus, otherwise, the
inverter may be damaged, and fire may be caused.
The connecting terminals of the brake resistor are enabled only for the
inverter of below 37G/45P with built-in brake unit.
The recommended wiring distance for the brake resistor shall be less than
5m. Otherwise, the inverter may be damaged.
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MD280/MD280N User Manual Mechanical and Electrical Installation
The inverter output side cannot connect to the capacitor or surge absorber,
otherwise, the frequent inverter protection may be caus ed, or the inverter
may be damaged.
If the wire between the motor and the inverter is too long, electrical
resonance may be caused due to the influence of the distributed capacitance,
thus damaging the motor insulation or produce large leakage current to
trigger inverter over current protection. When the length of the motor cable is
longer than 100 meters, AC output reactor shall be installed.
The terminal must be grounded reliably, and the resistance of the ground
wire must be less than 0.1Ω. Otherwise, fault may be caused, or the inverter
may be damaged.
Do not share the grounding terminal and terminal N of zero line of the
power supply.
3.2.5 Control Terminals and Wiring
1)The terminals of the control circuit are arranged as shown in the following
diagram:
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Mechanical and Electrical Installation MD280/MD280N User Manual
Terminal
Type Terminal Function Description
Name
Provide +10V power supply for external units,
with maximum output current of 10mA.
External
It is generally used as the operating power
+10V-GND terminal of 10V
supply for the external potentiometer.
Power supply power supply
The potentiometer resistance range is 1kΩ to
5kΩ.
Provide +24V power supply for external units. It
External is generally used as the operating power supply
+24V-COM terminal of 24V for digital input/output terminal and the external
power supply sensor.
Maximum output current: 200mA
1. Input voltage range: DC 0V to 10V (can be
Analog input customized as non-standard -10VDC to
AI1-GND
terminal 1 +10VDC)
2. Input impedance: 20kΩ
1. Input voltage range: DC 0V to 10V (can be
customized as non-standard -10VDC to
Analog
+10VDC)/0mA to 20mA, the selection of which
input
depends on jumper J1 on the control panel.
Analog input
AI2-GND 2. Input impedance: 20kΩ at the time of voltage
terminal 2
input; 500Ω at the time of current input.
3. Keyboard potentiometer input: It can switch
between AI2 and external keyboard
potentiometer via Jumper J2.
- 56 -
MD280/MD280N User Manual Mechanical and Electrical Installation
Terminal
Type Terminal Function Description
Name
Terminal
Type Terminal Function description
name
Optical coupling isolation,dual polarity open
collector output
DO1-COM Digital output
Output voltage range: 0V to 24V
DO2-COM
Output current range: 0mA to 50mA
Digital
When it is used as high-speed pulse output,the
Output
maximum frequency can reach 50kHz;
High-speed When it is used as open collector output, it is the
FM-COM
pulse output same as DO1 in terms of specification.
Caution:The function of AO,FM,DO3 share the
channel,only one of which can be selected.
Normally
T/A-T/B Contact driving capacity:
Relay closed terminal
AC250V,3A,COSφ=0.4。
output Normally open
T/A-T/C DC 30V,1A
terminal
485
A+/A- communication Standard 485 interface
Auxiliary port
interface External
Standard RJ45 network cable interface, used to
Keypad keyboard
provide signals for the external keyboard.
interface
- 57 -
Mechanical and Electrical Installation MD280/MD280N User Manual
and analog signal source side shall be installed with filter capacitor or
ferrite magnetic core, as shown in Fig.3-10.
Less than 20 Meters
Potentiometer
- 58 -
MD280/MD280N User Manual Mechanical and Electrical Installation
External
Analog Source
Ferrite Magnetic
Ring
Fig.3-8 Schematic Diagram for Wiring of Analog Input Terminal
- 59 -
Mechanical and Electrical Installation MD280/MD280N User Manual
- 60 -
MD280/MD280N User Manual Mechanical and Electrical Installation
61
Operation and Display MD280/MD280N User Manual
Fig.4-1 Schematic Diagram for the External Operation Panel of Inverter without
Potentiometer
Fig.4-2 Schematic Diagram for the External Keyboard of Inverter with
Potentiometer
1) Function LED Indictor Description:
RUN: When it is OFF, it indicates that the inverter is in stop status. When it is
ON, it indicates that the inverter is in running status.
LOCAL/REMOT: The LED indicator for keypad operation, terminal operation
and remote operation; when it is OFF, it is under keypad operation control;
when it is ON, it is under terminal operation control; when it flashes, it is
under communication operation control.
- 62 -
MD280/MD280N User Manual Operation and Display 示
- 63 -
Operation and Display MD280/MD280N User Manual
Modification of
Parameter Set Function Code Numeric Values of
Modification Modification Function Code
- 64 -
MD280/MD280N User Manual Operation and Display 示
- 65 -
Operation and Display MD280/MD280N User Manual
- 66 -
MD280/MD280N User Manual Function Parameter Table
- 67 -
Function Parameter Table MD280/MD280N User Manual
“☆” indicates that the parameter setup value can be modified when the
inverter is in stop status and running status;
“★” indicates that the parameter setup value cannot be modified when the
inverter is in the running status;
“●” indicates that the parameter value is the actual detection record and
cannot be modified.
“*” indicates that the parameter is “Factory default parameter” and can be
set only by the manufacturer, and the user is forbidden to perform any
operation.
- 68 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
adjustment)
1: AI1
2: AI2
7:AI1+AI2
8:Communication setup
9:PID + AI1
10:PID + AI2
Digital
setup 0:Without memory
Pre-set
0.00Hz to maximum frequency
F0-03 frequenc 0.01Hz 50.00Hz ☆
(F0-04)
y
Maximu
F0-04 50.00Hz to 630.00Hz 0.01Hz 50.00Hz ★
m
- 69 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
frequenc
y
Frequen
0:Numerical value setting (F0-06)
cy
1:AI1
F0-05 source 1 0 ★
2:AI2
upper
3:PULSE setting (DI5)
limit
Frequen
cy upper 0.00Hz to maximum frequency
F0-06 0.01Hz 50.00Hz ☆
limit (F0-04)
setup
Frequen
cy upper 0.00Hz to frequency upper limit
F0-07 0.01Hz 0.00Hz ☆
limit (F0-06)
setup
Speed-u
p/speed- 0: s (second)
F0-08 1 0 ★
down 1: m (minute)
time unit
Speed-u Model
F0-09 0.00s(m) to 300.00s(m) 0.01s(m) ☆
p time 1 dependent
Speed-d
Model
F0-10 own time 0.00s(m) to 300.00s(m) 0.01s(m) ☆
dependent
1
Carrier
Model
F0-11 frequenc 0.5kHz to 16.0kHz 0.1kHz ☆
dependent
y
- 70 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
ce 1: Setup value
frequenc
y of
speed-u
p/speed-
down
time
Running
frequenc
y
0: Running frequency
F0-14 UP/DO 1 0 ☆
1:Setup frequency
WN
referenc
e
Auxiliary
frequenc
y source
0:Relative to maximum frequency
Y
F0-16 1:Relative to frequency source 1 0 ☆
selection
X
at the
time of
overlap
- 71 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
frequenc
y source
Y
selection
at the
time of
overlap
0:Main
Frequen
1:Main + auxiliary
cy
F0-18 2:MainÅ>Auxiliary 1 0 ☆
source Y
3:MainÅ> Main + auxiliary
selection
4:AuxiliaryÅ>Main + auxiliary
Auxiliary
frequenc
y source 0.00Hz to Maximum frequency
F0-20 0.01Hz 0.00Hz ☆
digital F0-04
setup
offset
Motor
Model
F1-00 rated 0.2kW to 1000.0kW 0.1kw ★
dependent
power
Motor
Model
F1-01 rated 0V to 480V 1V ★
dependent
voltage
Motor
Model
F1-02 rated 0.1A to 6553.5A 0.1A ★
dependent
current
Motor
rated 0.01Hz to maximu frequency Model
F1-03 0.01Hz ★
frequenc (F0-04) dependent
y
- 72 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
Torque Model
F1-05 0.0%(auto) 0.1% to 30.0% 0.1% ☆
hoist dependent
Torque
boost
0.00Hz to maximu frequency
F1-06 cutoff 0.01Hz 50.00Hz ★
(F0-04)
frequenc
y
Multi-poi
nt V/F
F1-07 frequenc 0.00Hz to F1-09 0.01Hz 0.00Hz ★
y point
f1
Multi-poi
nt V/F
F1-08 frequenc 0.0% to 100.0% 0.1% 0.0% ★
y point
v1
Multi-poi
nt V/F
F1-09 frequenc F1-07 to F1-11 0.01Hz 0.00Hz ★
y point
f2
Multi-poi
nt V/F
F1-10 0.0% to 100.0% 0.1% 0.0% ★
voltage
point v2
- 73 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
frequenc
y point
f3
Multi-poi
nt V/F
F1-12 0.0% to 100.0% 0.1% 0.0% ★
voltage
point v3
Slip
compen
F1-13 sation 0.0% to 200.0% 0.1% 0.0% ☆
coefficie
nt
Over
F1-14 excitatio 0 to 200 1 64 ☆
n gain
Stator
Model
F1-16 resistan 0.001Ω to 65.535Ω 0.001Ω ☆
dependent
ce
Oscillati 0 to 100
on Model
F1-17 1 ☆
suppres dependent
sion gain
Oscillati
on
F1-19 suppres 0 to 3 1 1 ☆
sion
mode
- 74 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
DI1 0: None
terminal
F2-00 1: Run forward (FWD) 1 1 ★
function
2:RUN reverse (REV)
selection
3: Three-line running control
DI2
4: Forward jog (FJOG)
terminal
F2-01 5: Reverse jog (RJOG) 1 2 ★
function
6. Terminal UP
selection
7. Terminal DOWN
DI3
8: Free stop
terminal
F2-02 9: Fault reset (RESET) 1 4 ★
function
selection 10.Pause during the operation
11: External fault input normally
DI4
open
terminal
F2-03 12: External fault input normally 1 8 ★
function
selection closed
13. MS speed terminal 1
16:Speed-up/speed-down time
selection terminal
selection disabled
- 75 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
settings
F0-18(frequency + selection)to
0.
switching
31:Terminal command source
switching
32:Switch between the first motor
and the second motor
DI
F2-05 filtering 1 to 10 1 4 ☆
time
0: two-line mode 1
Terminal
1: two-line mode 2
F2-06 comman 1 0 ★
d mode 2: three-line mode1
3: three-line mode2
Terminal
UP/DO
F2-07 0.01Hz/s to 100.00Hz/s 0.01Hz/s 1.00Hz/s ☆
WN
velocity
AI1
F2-08 minimu 0.00V to F2-10 0.01V 0.02V ☆
m input
- 76 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
onding
Setup of
AI
minimu
m input
A1
F2-10 maximu F2-08 to 10.00V 0.01V 10.00V ☆
m input
A1
maximu
m input 0: F2-12
F2-11 1 0 ★
correspo 1: Set by AI2
nding
setup
A1
maximu
AI1 input
F2-13 filtering 0.00s to 10.00s 0.01s 0.10s ☆
time
Minimu
F2-14 0.00V to F2-16 0.01V 0.02V ☆
m input
AI2
minimu
- 77 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
AI2
F2-16 maximu F2-14 to 10.00V 0.01V 10.00V ☆
m input
AI2
maximu
m input
0: F2-18
F2-17 correspo 1 0 ★
1: Set by AI1
nding
setup
mode
AI2
maximu
AI2 input
F2-19 filtering 0.00s to 10.00s 0.01s 0.10s ☆
time
PULSE
input
minimu
F2-20 0.00kHz to F2-22 0.01kHz 0.00kHz ☆
m
frequenc
y
PULSE
input
minimu
F2-21 m -100.0% to 100.0% 0.1% 0.0% ☆
frequenc
y
correspo
- 78 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
nding
setup
PULSE
input
maximu
F2-22 F2-20 to 50.00kHz 0.01kHz 50.00kHz ☆
m
frequenc
y
PULSE
input
maximu
m 0: F2-24
F2-23 frequenc 1: Set by AI1 1 0 ★
y 2: Set by AI2
correspo
nding
setup
PULSE
input
maximu
m
F2-24 frequenc -100.0% to 100.0% 0.1% 100.0% ☆
y
correspo
nding
setup
PULSE
input
F2-25 0.00s to 10.00s 0.01s 0.10s ☆
filtering
time
DI input
F2-26 0 to 31 1 0 ☆
terminal
- 79 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
valid
status
selection
AI1 as
function
F2-27 同F2-00 1 0 ★
selection
of DI6
AI2 as
the
F2-28 function 同F2-00 1 0 ★
selection
of DI7
Multifun
selection
RELAY
0: No output
F3-01 output 1 2 ☆
1: Inverter being running
selection
2: Fault output
DO1
3:Frequency level detection FDT
F3-02 output 1 1 ☆
arrival
selection
4:Frequency arrival
DO2 5:Frequency upper limit arrival
F3-03 output 1 4 ☆
6: Frequency lower limit arrival
selection
7:In zero speed operation
FM 8: Motor overload alarm
(DO3)
F3-04 9: Inverter overload alarm 1 0 ☆
output
10: Setup counting value arrival
selection
- 80 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
12:Length arrival
0: Running frequency
1: Setup frequency
2: Output current
7:Length value
8:Counting value
9:Communication control output
AO zero
offset
F3-06 -100.0% to 100.0% 0.1s 0.0% ☆
coefficie
nt
Maximu
m
F3-08 frequenc 0.1kHz to 50.0kHz 0.1kHz 50.0kHz ☆
y of FMP
output
RELAY
F3-09 0.0s to 3600.0s 0.1s 0.0s ☆
output
- 81 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
delay
time
DO1
output
F3-10 0.0s to 3600.0s 0.1s 0.0s ☆
delay
time
DO2
output
F3-11 0.0s to 3600.0s 0.1s 0.0s ☆
delay
time
DO3
output
F3-12 0.0s to 3600.0s 0.1s 0.0s ☆
delay
time
DO
output
terminal
F3-13 0 to 15 1 0 ☆
valid
status
selection
Rotation
0:Start from stop frequency
speed
F4-01 1: Start from zero speed 1 0 ☆
tracking
2: Start from maximum frequency
mode
Rotation
speed
F4-02 1 to 100 1 20 ☆
tracking
fastness
- 82 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
and
slownes
s
Startup
0.00Hz to maximum frequency
F4-03 frequenc 0.01Hz 0.00Hz ★
(F0-04)
y
Startup
frequenc
F4-04 y 0.0s to 36.0s 0.1s 0.0s ★
retention
time
DC
brake
F4-05 current 0% to 100% 1% 0% ★
at
startup
DC
brake
F4-06 0.0s to 36.0s 0.1s 0.0s ★
time at
startup
Start
segment
F4-08 0.0% to 100.0% 0.1% 20.0% ★
time of S
curve
- 83 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
segment
time of S
curve
DC
brake at
frequenc
y
DC
brake at
F4-12 stop 0.0s to 36.0s 0.1s 0.0s ☆
waiting
time
DC
brake
F4-13 0% to 100% 1% 0% ☆
current
at stop
DC
brake
F4-14 0.0s to 36.0s 0.1s 0.0s ☆
current
at stop
Brake
F4-15 utilizatio 0% to 100% 1% 100% ☆
n ratio
- 84 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
frequenc
y
Jog
F5-01 speed-u 0.00s to 300.00s 0.01s 20.00s ☆
p time
Jog
F5-02 speed-d 0.00s to 300.00s 0.01s 20.00s ☆
own time
Jog
enabled
0: Disabled
F5-03 during 1 0 ☆
1: Enable
operatio
n
Speed-d
0.01s(m Model
F5-05 own time 0.00s(m) to 300.00s(m) ☆
) dependent
2
Skip
0.00Hz to maximum frequency
F5-06 frequenc 0.01Hz 0.00Hz ☆
(F0-04)
y
Skip
frequenc
0.00Hz to maximum frequency
F5-07 y 0.01Hz 0.00Hz ☆
(F0-04)
amplitud
e
Dead
zone
F5-08 time of 0.0s to 100.0s 0.1s 0.0s ☆
Forward
and
- 85 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
reverse
rotations
Reverse
0:Reverse rotation enabled
F5-09 rotation 1 0 ☆
1:Reverse rotation disabled
control
Run with
frequenc
y below 0: Run with frequency lower limit
F5-10 1 0 ☆
frequenc 1: Delay to stop
y lower
limit
Delay
duration
of stop
with
F5-11 frequenc 0.0s to 3600.0s 0.1s 0.0s ☆
y below
frequenc
y lower
limit
Setup
F5-12 running 0h to 65535h 1h 0h ☆
time
Action
selection
at the 0: Continue to run
F5-13 1 0 ☆
arrival of 1: Stop
running
time
Startup
0: Disabled
F5-14 protectio 1 0 ☆
1: Enabled
n
- 86 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
selection
Frequen
cy
Frequen
cy
detectio
F5-16 0.0% to 100.0% 0.1% 5.0% ☆
n
hysteres
is value
Frequen
cy arrival
detectio
F5-17 0.0% to 100.0% 0.1% 0.0% ☆
n
amplitud
e
Random
F5-18 PWM 0 to 10 1 0 ☆
gain
Modulati
0:Asynchronous modulation
F5-19 on mode 1 0 ★
1:Synchronous modulation
selection
Quick
current
0: Disabled
F5-20 limit 1 1 ★
1: Enabled
function
selection
- 87 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
F5-37 Dead-zo 0 to 1 1 0 ★
ne
compen
sation
mode
selection
- 88 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
0:F6-01
PID 1: AI1
F6-00 referenc 2: AI2 1 0 ☆
e source
3: PULSE (DI5)
4: MS speed
PID
numeric
F6-01 0.0% to 100.0% 0.1% 50.0% ☆
al value
setup
PID
referenc
F6-02 e 0.0s to 3000.0s 0.1s 0.0s ☆
change
duration
0:AI1
PID
1:AI2
F6-03 feedbac 1 0 ☆
2:PULSE (DI5)
k source
3:AI1-AI2
PID
0: Positive
F6-04 action 1 0 ☆
1: Negative
direction
PID
referenc
F6-05 e 0 to 65535 1 1000 ☆
feedbac
k range
- 89 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
onal
gain P
Integral
F6-07 0.01s to 10.00s 0.01s 2.00s ☆
time I
Different
F6-08 ial time 0.000s to 10.000s 0.001s 0.000s ☆
D
Deviatio
F6-09 0.0% to 100.0% 0.1% 0.0% ☆
n limit
PID
0:Stop without operation
F6-10 operatio 1 0 ☆
1: Operation upon stop
n mode
Swing
0: Relative to the center frequency
frequency
F7-00 1: Relative to the maximum 1 0 ☆
setup
frequency
mode
Swing
F7-01 frequency 0.00% to 100.0% 0.1% 0.0% ☆
amplitude
Kick
F7-02 frequency 0.0% to 50.0% 0.1% 0.0% ☆
amplitude
Swing
F7-03 frequency 0.01s to 300.00s 0.01s 10.00s ☆
cycle
Triangle
wave
F7-04 0.1% to100.0% 0.1% 50.0% ☆
boost
time
- 90 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
coefficient
Setup
F7-05 0m to 65535m 1m 1000m ☆
length
Actual
F7-06 0m to 65535m 1m 0m ☆
length
Pulse
F7-07 numberper 0.1 to 6553.5 0.1 100.0 ☆
meter
Setup
F7-08 counting 1 to 65535 1 1000 ☆
value
Designate
F7-09 d counting 1 to 65535 1 1000 ☆
value
Load
speed
F7-10 0.0001 to 6.5000 0.0001 1.0000 ☆
display
coefficient
0: No decimal place
Decimal
1: One decimal place
F7-11 point 1 1 ☆
position 2: Two decimal places
3: Three decimal places
Accumulat
F7-12 ed running 0h to 65535h 1h - ●
time
LED
running
F7-13 1 to 65535 1 799 ☆
display
parameter
- 91 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
LED stop
F7-14 display 1 to 511 1 51 ☆
parameter
0: MF.K invalid
channel)
reverse rotation
3: Forward jog
Software
F7-17 version 0.01 to 655.35 - - ●
No.
0: F8-01 reference
1: AI1
MS 2: AI2
speed 0
F8-00 3: pulse 1 0 ★
referenc
4: PID
e mode
5:preset frequency ( F0-03 )
reference, UP/DOWN can be
changed
- 92 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
MS -100.0% to 100.0%(frequency
F8-05 0.1% 0.0% ☆
speed 4 upper limit F0-05)
PLC
power
0:Power fault without memory
F8-10 fault 1 0 ☆
1: Power fault memory
memory
selection
Running 0: s (second)
F8-11 1 0 ☆
time unit 1: h (hour)
- 93 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
nt
running
time of
PLC
Speed-u
p/speed-
down
time
0:Speed-up/speed-down time 1
F8-13 selection 1 0 ☆
1:Speed-up/speed-down time 2
of
0-segme
nt of
PLC
Running
time of
F8-14 the first 0.0s(h) to 6553.5s(h) 0.1s(h) 0.0s(h) ☆
segment
of PLC
Speed-u
p/speed-
down
time
0:Speed-up/speed-down time 1
F8-15 selection 1 0 ☆
1:Speed-up/speed-down time 2
of the
first
segment
of PLC
Running
time of
the
F8-16 0.0s(h) to 6553.5s(h) 0.1 s(h) 0.0s(h) ☆
second
segment
of PLC
- 94 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
Speed-u
p/speed-
down
time
0:Speed-up/speed-down time 1
F8-17 selection 1 0 ☆
1:Speed-up/speed-down time 2
of the
second
segment
of PLC
Running
time of
F8-18 the third 0.0s(h) to 6553.5s(h) 0.1s(h) 0.0s(h) ☆
segment
of PLC
Speed-u
p/speed-
down
time
0: Speed-up/speed-down time 1
F8-19 selection 1 0 ☆
1: Speed-up/speed-down time 2
of the
third
segment
of PLC
Running
time of
the
F8-20 0.0s(h) to 6553.5s(h) 0.1s(h) 0.0s(h) ☆
fourth
segment
of PLC
Speed-u
p/speed- 0: Speed-up/speed-down time 1
F8-21 1 0 ☆
down 1: Speed-up/speed-down time 2
time
- 95 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
selection
of the
fourth
segment
of PLC
Running
time of
F8-22 the fifrth 0.0s(h) to 6553.5s(h) 0.1s(h) 0.0s(h) ☆
segment
of PLC
Speed-u
p/speed-
down
time
0:Speed-up/speed-down time 1
F8-23 selection 1 0 ☆
1:Speed-up/speed-down time 2
of the
fifth
segment
of PLC
Running
time of
F8-24 the sixth 0.0s(h) to 6553.5s(h) 0.1s(h) 0.0s(h) ☆
segment
of PLC
Speed-u
p/speed-
down
time
0:Speed-up/speed-down time 1
F8-25 selection 1 0 ☆
1:Speed-up/speed-down time 2
of the
sixth
segment
of PLC
- 96 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
Running
time of
the
F8-26 0.0s(h) to 6553.5s(h) 0.1s(h) 0.0s(h) ☆
seventh
segment
of PLC
Speed-u
p/speed-
down
time
0: Speed-up/speed-down time 1
F8-27 selection 1 0 ☆
1: Speed-up/speed-down time 2
of the
seventh
segment
of PLC
Group F9 Reserved
F9-00 Reserved
0:300BPS
1:600BPS
2:1200BPS
Baud 3:2400BPS
FA-00 1 5 ☆
rate 4:4800BPS
5:9600BPS
6:19200BPS
7:38400BPS
0: No parity check
Data
FA-01 1: Even check 1 0 ☆
format
2: Odd check
- 97 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
Respons
FA-03 0ms to 20ms 1ms 2ms ☆
e delay
Commu
FA-04 nication 0.0s to 60.0s 0.1s 0.0s ☆
overtime
Motor
overload
0: Invalid
FB-00 protectio 1 1 ☆
1:Valid
n
selection
Motor
overload
FB-01 0.20 to 10.00 0.01 1.00 ☆
protectio
n gain
Motor
overload
FB-02 prealarm 50% to 100% 1% 80% ☆
coefficie
nt
Over
FB-03 voltage 0 to 100 1 0 ☆
stall gain
Over
voltage
stall
FB-04 120% to 150% 1% 130% ☆
protectio
n
voltage
- 98 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
Over
FB-05 current 0 to 100 1 20 ☆
stall gain
Over
current
FB-06 stall 100% to 200% 1% 150% ☆
protectio
n current
Ground
short
circuit
0: Invalid
FB-07 protectio 1 1 ☆
1:Valid
n upon
power-o
n
Load
fault
0: Invalid
FB-08 protectio 1 0 ☆
1: Valid
n
function
Transien
t stop/
0:Invalid
FB-09 non-stop 1 0 ☆
1:Valid
function
selection
Transien
t stop/
non-stop
0.00Hz/s to maximum
FB-10 frequenc 0.01Hz/s 10.00Hz/s ☆
frequency(F0-04) /s
y
reductio
n rate
- 99 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
Transien
t stop/
non-stop
FB-11 voltage 0.00s to 100.00s 0.01s 0.50s ☆
recovery
judgmen
t time
Transien
t stop/
non-stop
FB-12 60.0% to 100.0% 1% 80.0% ☆
action
judgmen
t voltage
Fault
auto
FB-13 0 to 10 1 0 ☆
reset
times
Fault
relay
action
selection
0:No action
FB-14 during 1 0 ☆
1: Action
fault
auto
reset
period
Fault
auto
FB-15 0.1s to 60.0s 0.1s 1.0s ☆
reset
interval
Fault
FB-16 0.1h to 1000.0h 0.1h 1.0h ☆
auto
- 100 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
reset
times
clearing
time
Input
phase
fault 0:Invalid
FB-17 1 1 ☆
protectio 1:Valid
n
selection
Output
phase
fault 0:Invalid
FB-18 1 1 ☆
protectio 1:Valid
n
selection
Inverter
-10℃ to 100℃
module
FB-19 radiator 1℃ - ●
temperat
ure
0: No fault
1: Reserved
6 、 Speed-down over
voltage(ERR06)
- 101 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
voltage(ERR07)
(ERR08)
(ERR18)
(ERR21)
22: Reserved
fault(ERR23)
- 102 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
The -
second
FB-21 - - ●
fault
type
The last -
FB-22 fault - - ●
type
Frequen -
FB-23 cy upon - - ●
fault
Current -
FB-24 upon - - ●
fault
Bus -
voltage
FB-25 - - ●
upon
fault
Input -
terminal
FB-26 status - - ●
upon
fault
Output -
terminal
.
FB-27 +- - - ●
status
upon
fault
- 103 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
Zero
0.0% to 300.0%
current
FB-29 100.0%correspondingmmotro 0.1% 5.0% ☆
detectio
rated current
n level
Zero
current
FB-30 detectio 0.01s to 600.00s 0.01s 0.10s ☆
n delay
time
The
second
Model
FC-00 motorrat 0.2Kw to 1000.0kW 0.1kw ★
dependent
ed
power
The
second
Model
FC-01 motor 0V to 480V 1V ★
dependent
rated
voltage
The
second
Model
FC-02 motor 0.1A to 6553.5A 0.1A ★
dependent
rated
current
- 104 -
MD280/MD280N User Manual Function Parameter Table
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
No-load Model
FC-04 0.1A to 6500.0A 0.1A ☆
current dependent
The
second
Model
FC-05 stator 0.001Ω to 65.535Ω 0.001Ω ☆
dependent
resistan
ce
The
second Model
FC-06 0.0%(auto) 0.1% to 30.0% 0.1% ☆
Torque dependent
hoist
The
second
slip
FC-07 compen 0.0% to 200.0% 0.1% 0.0% ☆
sation
coefficie
nt
Oscillati 0 to 100
on
suppres
Model
FC-08 sion gain 1 ☆
dependent
of The
second
motor
- 105 -
Function Parameter Table MD280/MD280N User Manual
Factory
Minimu
Function code Name Setup Range Default Change
m Unit
Value
Factory Reserved
default
FF-00 Reserved *
passwor
d
User
FP-00 passwor 0 to 65535 1 0 ☆
d
Paramet
0:No operation
er
FP-01 1. Recover Factory default value 1 0 ★
initializat
2: Clear the record information
ion
- 106 -
MD280/MD280N User Manual Function Parameter Table
Parameter Description
- 107 -
Parameter Description MD280/MD280N User Manual
Perform running command control with RUN, MF.K and STOP/RES keys
on the operation panel.
2 AI2
- 108 -
MD280/MD280N User Manual Parameter Description
4 MS speed
5 PLC
6 PID
7 AI1+AI2
8 Communication reference
9 PID + AI1
10 PID + AI2
Select the input channel for inverter reference frequency. There are 8
reference frequency channels, which include:
It can modify the setup frequency value of the inverter with UP and DOWN
keys on the keyboard or multifunctional input terminals UP and DOWN.
The Up and Down keys on the keyboard or terminals may be modified
under the current frequency in the stop or run status of the inverter. For
details regarding the function setting of terminals UP and DOWN, refer to
Group F2 “Terminal UP” and “Terminal DOWN”.
1:AI1
2:AI2
It means that the frequency is determined by the analog input terminal. AI1
is used for 0 to 10V voltage input. AI2 can be used for 0 to 10V voltage
input or 4 to 20mA current input, which can be selected by the J3 jumper on
the control panel. The potentiometer on the external keyboard and AI2
channel on the control panel cannot be enabled at the same time and shall
be selected by the J2 jumper on the control panel. Refer to the description
of Group F2 function codes (F2-08 to F2-19) for the settings of AI1 and AI2
input frequencies.
The frequency is given via the input pulse of the terminal. Pulse reference
- 109 -
Parameter Description MD280/MD280N User Manual
Caution: When DI5 is used as pulse input, it needs to set the input terminal
DI5 to 0 (no function) so as to avoid triggering error action.
4: MS speed
Select MS speed running mode. It needs to set Group F2 “Input Terminals”
(F2-00 to F2-04) and MS reference parameters of Group F8 “MS Speed
and PLC” (F8-00 to F8-08) to determine the corresponding relationship
between the terminal reference signal and the reference frequency.
For details regarding the function setting of terminals and MS speed, refer
to the function description of “MS Speed Terminal” of input terminal DI of
Group F2.
5. PLC
Select simple PLC mode. When the frequency source is simple PLC, it
needs to set the parameters of Group F8 “MS Speed and PLC” to
determine the reference frequency at each running phase. Refer to the
description of Group F8 function codes for the PLC running setup.
6: PID
Select PID process control.In this case, it needs to set Group F6 “PID
Function”. Inverter operation frequency is the frequency after PID
reacts.Refer to “PID Function” settings in Group F6 for meanings of PID
reference source, reference parameter, and feedback source, etc.
7: AI1 +AI2
It means that the frequency is given by adding the setting value of input
terminal AI1 to the setting value of AI2. Refer to the description of Group F2
function codes (F2-08 to F2-19) for the settings of AI1 and AI2 input
frequencies.
8: Communication reference
The frequency source is given by the host computer via the communication
- 110 -
MD280/MD280N User Manual Parameter Description
It means that the frequency is set by PID and AI1 overlap setup.
Caution: PID reference source(F6-00)and PID feedback source (F6-03)
can not be selected to AI1.
10、PID + AI2
It means that the frequency is set by PID and AI1 overlap setup.
Caution: PID reference source(F6-00)and PID feedback source (F6-03)
can not be selected to AI2.
0: Without memory: Upon power fault or stop of the inverter, set the
frequency value back to the setup value of “Preset Frequency” (F0-03).
1: Power fault memory: Upon power fault (in running or stop status) of the
inverter, set the frequency value back to the setup value of “Preset
Frequency” (F0-03).
2: Stop memory: When the inverter stops, the setup frequency before
stopping is memorized.
3: Stop and power fault memories: If the inverter is powered on upon power
fault, the setup frequency is the value at the time of power fault. If the
inverter stops, the setup frequency before stopping is memorized.
Factory default
Preset frequency 50.00Hz
value
F0-03
0.00Hz to maximum frequency
Setup range
(F0-04)
- 111 -
Parameter Description MD280/MD280N User Manual
Factory
Frequency upper limit 0
default value
0 F0-06 setting
F0-05
Setup 1 AI1
range 2 AI2
3 Pluse setting(DI5)
Factory
Frequency lower
default 0.00Hz
F0-07 limit
value
Setup range 0.00Hz to frequency upper limit (F0-06)
When the running frequency of the inverter is lower than the frequency
lower limit, it can select to run or stop the inverter at frequency lower limit.
Refer to F5-10 function code for details. I
- 112 -
MD280/MD280N User Manual Parameter Description
Factory
Speed-up time 1 Model dependent
F0-09 default value
Setup range 0.00s(m) to 300.00s(m)
Factory
Speed-down time 1 Model dependent
F0-10 default value
Setup range 0.00s(m) to 300.00s(m)
The acceleration time means the time t1 needed for the inverter to
accelerate from 0Hz to the maximum output frequency (F0-04).
The deceleration time means the time t2 needed for the inverter to
decelerate from the maximum output frequency (F0-04) to 0Hz.
- 113 -
Parameter Description MD280/MD280N User Manual
This function is used to adjust the carrier wave frequency of the inverter. By
adjusting the carrier wave frequency, the motor noise can be reduced, the
resonance of the mechanical system can be avoided, so that the leakage
current to the ground and the interference of the inverter can be reduced.
When the carrier wave frequency is low, the output current higher harmonic
component will be increased, the motor loss will be increased, and the
motor temperature rise will also increase.
When the carrier wave frequency is high, the motor loss is reduced, and
the motor temperature is reduced also, but the inverter loss and inverter
temperature rise will be increased, and thus the interference will be
increased.
Factory
Running direction 0
default value
F0-12
0 Consistent direction
Setup range
1 Reverse direction
Modification of this parameter can change the rotary direction of the motor
without changing any other parameters, which is equivalent to the role of
- 114 -
MD280/MD280N User Manual Parameter Description
switching the rotary direction through adjusting any two lines of the motor
(U, V and W). The changed direction is still the forward running direction of
the inverter.
When it needs to change the rotary direction of the motor, it can modify this
parameter rather than adjust the wiring of the motor.
Caution: When the function code is restored to the factory default value,
this parameter value is restored to 0, which shall be used prudently in the
applications where the motor rotary direction is not allowed to change.
Speed-up/speed-down Factory
0
reference frequency default value
F0-13
0 Maximum frequency
Setup value
1 Setting frequency
When it’s selected to 0, the speed-up time means the time needed for the
inverter speeds up from 0Hz to the maximum frequency, speed-down time
means the time needed for the inverter speeds up from 0Hz to setting
frequency,speed-down time means the time needed for the inverter speeds
down from setting frequency to 0Hz.
- 115 -
Parameter Description MD280/MD280N User Manual
6 PID
7 AI1+AI2
8 Communication setup
When the auxiliary frequency source is used as independent frequency
reference channel (i.e. frequency source switching from X to Y”), it is used
in the same way as the main frequency source X.
When the auxiliary frequency source is used as overlap reference (i.e.
frequency source selection switching from X plus Y or X to X plus Y), it has
special points as follows:
2、When the auxiliary frequency source is analog input reference (AI1, AI2)
or pulse input reference, 100% of input setup is relative to the auxiliary
frequency source range (refer to F0-16 and F-17). To adjust the main
reference frequency, it needs to set the corresponding setup range of
analog input to “-n% to n% (refer to F2-08~F2-19).
Auxiliary Frequency
Factory
source Y relative 0
default value
F0-16 value selection
Setup 0 Relative to maximum frequency
Range 1 Relative to frequency source X
Auxiliary Frequency Factory
0
source Y default value
F0-17
Setup
0% to 150%
Range
When the frequency source selection is frequency overlap reference
(F0-18 is set to 1 or 3), it is used to determine the adjustment range of
- 116 -
MD280/MD280N User Manual Parameter Description
- 117 -
Parameter Description MD280/MD280N User Manual
Auxiliary frequency
Factory
source offset digital 0.00Hz
F0-20 default value
setup
Setup range 0.00Hz to Maximum frequency F0-04
It is valid only at the time of frequency source overlap reference.
Group F1 Motor Parameter, V/F Control Parameter
Factory defult Model dependent
Rated power
F1-00 value
Setup range 0.2kW to1000.0kW
Factory defult Model dependent
Rated voltage
F1-01 value
Setup range 0V to 480V
Factory defult Model dependent
Rated current
F1-02 value
Setup value 0.1A to 6553.5A
Factory defult Model dependent
Rated frequency
value
F1-03
0.00Hz to maximum frequency
Setup range
(F0-04)
Caution
1、 Please set the parameters according to the nameplate parameters of
the motor.
2、To ensure the control performance, the motor shall be configured
according to the standard configuration of the motor. If the motor
power has significant difference with the configuration of the standard
motor, the control performance of the inverter may be degraded.
3、When Modify the rated power, the drive power estimates under
the rated current, no-load current, stator resistance. Therefor, please
set the rated power, and then set the rated current, no-load current,
stator resistance.
Factory defult 0
F1-04 V/F curve setup
value
Set 0 Straight V/F curve
- 118 -
MD280/MD280N User Manual Parameter Description
0: Straight V/F curveIt is suitable for the ordinary command torque load.
1. Multi-point V/F curve. It is suitable for such special loads as dehydrator
and centrifugal machine. It can be self-defined. Refer to the description of
functional codes of Group F1-07 to F1-12 for details.
2: Square V/F curve. It is suitable for such special loads as fan and pump.
- 119 -
Parameter Description MD280/MD280N User Manual
Factory default
Toruqe hoist 1.0%
F1-05 value
Setup range 0.0%(auto)to 30.0%
Torque hoist cut-off Fatory default
50.00Hz
frequency value
F1-06
0.00Hz to maximum output frequency
Setup range
(F0-04)
To compensate the V/F control low frequency torque characteristics,
increase compensation will be provided for the inverter output voltage upon
low frequency.
Torque hoist: it will be set according to the percentage of input rated
voltage to the inverter. Below are explanations of setting torque increase:
1) When the torque hoist is set as 0.0%, the inverter will adopt auto
torque hoist.
2) This parameter can be properly hoisted for small motor, while for
large motor; the parameter can be properly decreased.
3) If the torque hoist is set to be too large, the motor may have over
temperature, and the inverter may have over-current.
Torque hoist cut-off frequency: As shown in Fig. 6-2, the torque hoist is
valid when the cutoff frequency is below this setting frequency. Otherwise,
the torque hosit will be invalid.
Output Voltage
Output Frequency Hz
Manual Torque
Maximum Output Voltage
Boost Voltage
Cutoff Frequency Rated Running Frequency
of Torque Boost
Fig. 6-2 schematic diagram for manual torque hoist
- 120 -
MD280/MD280N User Manual Parameter Description
Factory
Multi-point V/F frequency
default 0.00Hz
F1-07 point f1
value
Setup range 0.00Hz to F1-09
Factory
Multi-point V/F voltage
default 0.0%
F1-08 point v1
value
Setup range 0.0% to 100.0%
Factory
Multi-point V/F frequency
default 0.00Hz
F1-09 point f2
value
Setup range F1-07 to F1-11
Factory
Multi-point V/F voltage
default 0.0%
F1-10 point v2
value
Setup range 0.0% to 100.0%
Factory
Multi-point V/F frequency
default 0.00Hz
point f3
F1-11 value
F1-09 to rated frequency of motor
Setup range
(F1-03)
Factory
Multi-point V/F voltage
default 0.0%
F1-12 point v3
value
Setup range 0.0% to 100.0%
Six parameters of F1-07 to F1-12 define the multi-point V/F curve. The
frequency point setup range is 0.00Hz to rate frequency of motor, and the
voltage setup range is 0.0% to 100%, which corresponds to 0V to rated
voltage of motor.
The setup value of multi-point V/F curve is generally set in accordance with
the load characteristics of the motor. The setting of multi-point V/F curve is
as shown in Fig.6-3.
Caution:
1) It must set as follows: F1-05<=F1-09<=F1-11. To ensure the
setup is correct, this inverter imposes restriction on the relationship
between the upper limit and the lower limit of frequency points F1-07,
F1-09 and F1-11. It must set F1-07 firstly, followed by F1-09 and
F1-11.
- 121 -
Parameter Description MD280/MD280N User Manual
2) If the voltage is set too high at the time of low frequency, it may
cause overheating and even burning of the motor as well as stall over
current or over current protection of the inverter.
Voltage %
Frequency Hz
Points 1 to 3 Voltage Proportion of Multi-point V/F
Points 1 to 3 Frequency Point of Multi-point V/F
Rated Motor Frequency
Fig6- 3 Schematic Diagram for Multi-point V/F Curve
Factory 0.0%
Slip compensation coefficient default
F1-13 value
Setup value 0.0% to 200.0%
The V/F control slip caused by the load can be compensated by setting this
parameter, so that the motor rotary speed will decrease following the
decrease of the load change for V/F control. In general, 100% corresponds
to the rated slip of the motor with rated load.
The slip coefficient adjustment may be performed referring to the following
principle: When the load is rated load, and the slip compensation
coefficient is set to 100%, the rotary speed of the motor is close to the
reference speed.
Factory
Over excitation gain 64
F1-14 default value
Setup range 0 to 200
The role of over excitation gain function is to suppress the rise of bus
voltage during the inverter deceleration, thus avoiding occurrence of over
voltage fault due to bus voltage exceeding over voltage protection limitation
value. The higher the over excitation gain is, more powerfully the
suppression effect is. The setting is described as follows:
- 122 -
MD280/MD280N User Manual Parameter Description
Factory
No-load current default Model dependent
F1-15 value
Setup range 0.1A to motor rated current (F1-02)
Factory
Stator resistance default Model dependent
F1-16
value
Setup range 0.001Ω to 65.535Ω
When the motor has no oscillation, please select this gain as 0. Only when
the motor has obvious oscillation and does not run normally can the gain
be properly increased. The bigger the gain is, the better oscillation
suppression result will be.
The gain shall be set as small as possible under the condition that the
oscillation is suppressed effectively so as to avoid high influences on the
V/F operation.
Factory 0
Tunig selection
default value
F1-18 0 No operation
Setup range
1 Static tuning
- 123 -
Parameter Description MD280/MD280N User Manual
Action description:
Set the function code to 1 and press RUN key for confirmation, and then
the inverter will conduct static tuning.
When it is set to 1, press ENTER key and “TUNE” will be displayed and
flashes. Press RUN key to conduct parameter tuning, and at this time the
displayed “TUNE” stops flashing. After the tuning is completed, the display
will return to the stop status interface.The tuning process can be stopped
by pressing the STOP key.
When the tuning is completed, the value of F1-11 will automatically restore
to 0.
- 124 -
MD280/MD280N User Manual Parameter Description
Caution:
1: When DI5 as high-speed pluse input terminal,set function setup of input
terminal DI5 to zero(no function)so as to avoid malfunction. When DI5 is
high-speed pluse input, it can be the frequency source, Frequency source
upper limit, PID setup source, PID feedback source, and setup source of
MS zero-segment.
2: For the counter input and the length count input, please use DI5 when
the pluse frequency is higher.When use low-speed pluse, and use DI1 to
DI4.
- 125 -
Parameter Description MD280/MD280N User Manual
Setup
value Function Description
reverse rotations.
Forward rotation The forward jog and reverse jog of the
4
Jog(FJOG) inverter are controlled via the external
terminals. Refer to the descriptions of
Reverse rotation function codes F5-00, F5-01 and F5-02
5
Jog(RJOG) for the details of jog running frequency
and jog speed-up/speed-down time.
6 Terminal UP When command source (F0-01) is set as
“Digital Setup”, the increase or decrease
of the setup frequency is implemented
7 Terminal DOWN through the external terminal. The
increase/decrease velocity is set by
F2-07.
When this terminal command is valid,
meaning that the inverter locks the output,
8 Free stop
the load will free stop according to the
mechanical inertia.
When this terminal command is valid,
Fault reset
9 inverter’s fault can be reset.
(RESET)
The function is a valid pluse.
When this terminal command is valid, the
inverter sets the way of stop according to
F4-10 function code. If it is PLC running at
Pause during
10 this time, it will memorize the frequency
operation
and running time of the running phase at
the pause time, during which the PLC
does not count the time.
External fault External fault signal can be inputted
11 normally open through the external terminal for
input monitoring fault of external equipments by
inverter.When the inverter detects that
external equipments occur fault, it will
External fault stop and report “ERR15” fault.The fault
12 normally closed signal input can adopt either normally
input open or normally closed mode.
The enxternal fault normally open input is
selected, it may occur fault when the
- 126 -
MD280/MD280N User Manual Parameter Description
Setup
value Function Description
terminal is closed.
The external fault normally open input is
selected, it may occur fault when the
terminal is open.
- 127 -
Parameter Description MD280/MD280N User Manual
Setup
value Function Description
When this terminal command is valid, it
Speed-up/speed-
19 can maintain the current frequency output
down disabled
while stopping.
When this terminal command is valid, the
20 PID pause PID stops adjustment, and the inverter
maintains the current frequency output.
When this terminal command is valid, it
clears the memorized PLC running phase
21 PLC status reset
and running time, and restores to the
initial status of PLC running.
When this terminal command is valid, the
Swing frequency inverter maintains the frequency output of
22
pause the swing frequency center, and the swing
frequency pauses.
Counter input It is used as input terminal of the counting
23
(DI5) pulse.
When this terminal command is valid, it
clears the counting value of the counter to
24 Counter reset zero.Refer to the description of F7-08 and
F7-09 function codes for the counting
function.
Length counting It is used as pulse input terminal of the
25
input (DI5) length counting.
When this terminal is valid, it clears the
length counting to zero. Refer to the
Length counting
26 description of F7-05, F7-06 and F7-07
reset
function codes for the length counting
function.
When this terminal command is valid,
Interchange of AI1 interchange AI1 and AI2 setting value. But
27
and AI2 settings it does not affect the maximum input
corresponding setting mode of AI1 and AI2.
When the terminal command is valid, the
Frequency source current frequency switches to AI1
28 switching reference.It is valid only for setting F0-18
switches to AI1 ( frequency source overlapping
selection)to 0.
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MD280/MD280N User Manual Parameter Description
Setup
value Function Description
AI1 is used as the
27 function selection
AI is used as DI, but the ground of AI
of DI6
(GND) and DI (COM) are not to
AI2 is used as the
breakover.
28 function selection
of DI7
When this terminal command is valid, it
must implement DC brake at stop
according to the DC brake initial
frequency at stop, DC brake waiting time
DC brake enable at stop, DC brake current at stop and DC
29
at stop brake time at stop as set in function codes
of F4-11 to F4-14.
When this function is not selected, the
function of DC brake at stop is valid by
default.
When this terminal command is valid, the
Keyboard
reference channel of the current
30 command source
frequency source is forced to switch to
switching
reference of “Operation Panel Channel".
When this terminal command is valid, the
Terminal reference channel of the current
31 command source frequency source is forced to switch to
switching reference of “Terminal Command
Channel".
Switching for the
When terminal command is valid,
32 first motor and the
switching for the second motor.
second motor
When the frequency source selection
(F0-07) is set to 2, it performs switching
between main frequency source X and
频率源切换 auxiliary frequency source Y via this
33 Frequency source terminal.
switching When the frequency source selection
(F0-07) is set to 3, it performs switching
between main frequency source X and
(main frequency X plus auxiliary
- 129 -
Parameter Description MD280/MD280N User Manual
Setup
value Function Description
frequency source Y) via this terminal.
When the frequency source selection
(F0-07) is set to 4, it performs switching
between auxiliary frequency source X and
(main frequency X plus auxiliary
frequency source Y) via this terminal.
Caution:
1: The source keyboard command switching of DI terminal has priority over
the source terminal command switching of DI terminal.When the keyboard
command source switching or terminal command source switching is valid,
the MF.K function is invalid for control panel command channel and remote
command channel switching.
2: The second motor paramerter is set by group FC function code. V/F
curve is straight by default, speed-up/speed-down time is determined by
function code of FC-09.
- 130 -
MD280/MD280N User Manual Parameter Description
Frequency Corresponding
K3 K2 K1
setting parameter
OFF OFF OFF MS speed 0 F8-00
OFF OFF ON MS speed 1 F8-02
OFF ON OFF MS speed 2 F8-03
OFF ON ON MS speed 3 F8-04
ON OFF OFF MS speed 4 F8-05
ON OFF ON MS speed 5 F8-06
ON ON OFF MS speed 6 F8-07
ON ON ON MS speed 7 F8-08
Fig. 6-4 Schematic Diagram for the Setting of MS Speed Terminal
Factory 4
DI filtering time
F2-05 default value
Setup range 0 to 10
This parameter defines four different modes of controlling the forward and
reverse rotations of the inverter via the external terminal. The FWD
terminal, REV terminal and DIn terminal mentioned below refer to forward
rotation terminal, reverse rotation terminal and three-line mode running
control terminal respectively.
0:Two-line running mode 1: This mode is the mostly used forward/reverse
rotation control mode. The forward/reverse rotation of the motor is decided
- 131 -
Parameter Description MD280/MD280N User Manual
by the FWD and REV terminal commands. The descriptions on the terminal
running command are as shown in Fig. 6-5:
MD280
Running Direction
K1 K2
Selection K1
1 0 Forward Rotation K2
0 1 Reverse Rotation
1 1 Stop COM Digital public terminal
0 1 Stop K2
1 0 Forward Rotation
1 1 Reverse Rotation COM Digital public terminal
MD280
SB2
FWD Digital input terminal
SB1
DIn Three-line mode running
control terminal
SB3
REV Digital input terminal
- 132 -
MD280/MD280N User Manual Parameter Description
Where,
SB1: Running enable button and stop button
SB2: Forward rotation button
SB3: Reverse rotation button
DIn ranges between DI1 and DI5. In this case, it shall define the
corresponding terminal function setting as No.3 function “Three-line
Running Control”.
3: Three-line running mode 2: DIn terminal serves as running enable
terminal, and the running command is given by the FWD terminal, while the
running direction depends on the status of REV terminal. The stop
command is performed by disconnecting the DIn terminal. The descriptions
on the terminal running command are as shown in Fig. 6-8:
MD280
Running Direction
K SB2
SB1
0 Forward Rotation DIn Three-line mode running
control terminal
- 133 -
Parameter Description MD280/MD280N User Manual
Where,
SB1: Running enable button and stop button
SB2: Running button
K: The switch for direction selection.
Factory
Terminal UP/DOWN
default 1.00Hz/s
F2-07 velocity
value
Setup range 0.01Hz/s to 100.00Hz/s
It is used to set the change rate when the setup frequency is adjusted with
terminals UP/DOWN.
Factory
AI1 minimum input 0.02V
F2-08 default value
Setup value 0.00V to F2-10
Corresponding setup Factory
0.0%
F2-09 of AI1 minimum input default value
Setup value -100.0% to100.0%
Factory
AI1 maximum input 10.00V
F2-10 default value
Setup value F2-08 to 10.00V
Factory
Corresponding setup of
default 0
AI1 maximum input
F2-11 value
0 F2-12
Setup value
1 Set by AI2
Corresponding setup
Factory
of AI1 maximum 100.0%
F2-12 default value
input
Setup value -100.0% to 100.0%
AI1 input filtering Factory
0.10s
F2-13 time default value
Setup value 0.00s to 10.00s
The parameters above mentioned define the relationship between analog
input voltage and the analog input setup value. When analog input voltage
exceeds the set maximum input or minimum input limit, the voltage beyond
the limit will be calculated by maximum input or minimum input as shown in
Fig. 6-9.
AI input filtering time: AI1 input signal will be filtered.The longer the filtering
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MD280/MD280N User Manual Parameter Description
time lasts, the stronger the interference immunity will become, but
adjustment response will be slow down; the shorter the filtering time lasts,
the faster the response will be, but the interference immunity will become
weak.In various application cases, the nominal value corresponding to
100% of analog reference will be different. Refer to specific application
description for the specific value.
Corresponding Settings
(Frequency, etc.)
Factory
AI2 minimum input default 0.02V
F2-14
value
Setup range 0.00V to F2-16
Factory
Corresponding Setup of
default 0.0%
F2-15 AI2 minimum input
value
Setup range -100.0% to 100.0%
Factory
AI2 maximum input default 10.00V
F2-16 value
Setup range F2-14 to 10.00V
AI2 maximum input
Factory default
corresponding setup 0
value
F2-17 mode
0 F2-18
Setup range
1 Set by AI1
- 135 -
Parameter Description MD280/MD280N User Manual
Factory
Corresponding setup of
default 100.0%
F2-18 AI2 maximum input
value
Setup range -100.0% to 100.0%
Factory
AI2 input filtering time default 0.10s
F2-19
value
Setup range 0.00s to 10.00s
When AI2 channel is analog current input, if the input current is 0mA to
20mA, the corresponding input voltage is 0V to 10V. If the input current is
4mA to 20mA, 4mA current corresponds to 2V voltage; if it needs to make
4mA to 20mA correspond to 0% to 100%, it can set the voltage to 2V to
10V accordingly.
Caution: F2-11 and F2-17 cannot be selected as 1 at the same time, or the
corresponding setups of AI1 and AI2 will conflict and fail.
Factory
0.00
PULSE input minimum frequency default
F2-20 kHz
value
Setup range 0.00kHz to F2-22
Factory
Corresponding setup of PULSE input
default 0.0%
F2-21 minimum frequency
value
Setup range -100.0% to 100.0%
Factory
50.00
PULSE input maximum frequency default
F2-22 kHz
value
Setup range F2-20 to 50.00kHz
Factory
PULSE input maximum frequency
default 0
corresponding setup
value
F2-23
0 F2-24
Setup range 1 Set by AI1
2 Set by AI2
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MD280/MD280N User Manual Parameter Description
Factory
Corresponding setup of PULSE input
default 100.0%
F2-24 maximum frequency
value
Setup range -100.0% to 100.0%
Factory
PULSE input filtering time default 0.10s
F2-25
value
Setup range 0.00s to 10.00s
This parameter defines the relationship between the pulse input and the
typical setup value of pulse input when the input pulse is used as frequency
source. PULSE is similar to AI in terms of setup method.
- 137 -
Parameter Description MD280/MD280N User Manual
AI is used as DI, but the ground of AI (GND) and DI (COM) are not to
breakover.
Group F3 Output Terminal
MD280 series inverter provides one multifunctional terminal output
selection (FMP, AO or DO3), one multifunctional relay output terminal
(RELAY) and two multifunctional digital output terminal (DO1 and DO2).
Multifunctional
Factory
terminal output 2
default value
selection
F3-00
0 FM (FMP pulse output)
Setup
1 FM (DO3 digital output)
range
2 AO (Analog output)
Caution: The “PULSE setup (DI5)” function of the frequency source (F0-01)
and the “FMP pulse output” function of the FM terminal (F3-00) cannot be
selected for use at the same time.
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MD280/MD280N User Manual Parameter Description
Factory
F3-04 0 (No output)
default value
Setup
Function Description
value
0 No output The output terminals do not have any function.
- 139 -
Parameter Description MD280/MD280N User Manual
Setup
Function Description
value
counting pulse F7-05, it outputs ON signal. Refer to F7-08 and
value arrival F7-09 function codes for the description of length
counting function.
When the actual length exceeds the setup value in
F7-05, it outputs ON signal. Refer to F7-08 and
12 Length arrival
F7-09 function codes for the description of length
counting function.
When the simple PLC running finishes one
PLC circulation
13 circulation, it output a pulse signal with width of
end
250ms.
When the accumulated running time (F7-12) of the
inverter exceeds the setup time (F5-12), it outputs
14 Run time reached
ON signal. Refer to F5-12 and F5-13 function codes
for the description of timing function.
Communication It is controlled by the host computer. Refer to MD280
15
control Series Communication Protocol for details.
When the inverter has no fault and the bus voltage
works normally and the inverter is ready for running,
16 RUN ready
it outputs ON signal. Upon normal startup, it closes
the output.
When the voltage value of analog input AI1 is higher
17 AI1>AI2
than that of analog input AI2, it output ON signal.
Zero-current is When the zero-current is detected, it output ON
18
detected signal.
External brake Refer to F5-39 and F5-40.
19
signal
Software
20 over-curent DO Refer to F5-27.
output
- 140 -
MD280/MD280N User Manual Parameter Description
Setup
Function Range
value
Running
0 0 to maximum output frequency (F0-04 setup value)
frequency
1 Setup frequency 0 to maximum output frequency (F0-04 setup value)
2 Output Current 0 to 200% of the rated current of the inverter
3 Output power 0 to 200% of the rated power of the inverter
4 PULSE input 1Hz to 50.0kHz
5 AI1 0V to 10V
6 AI2 0V~10V/0~20mA
7 Length 0 to setup length value (setup value of F7-05)
8 Counting value 0 to setup counting value (setup value of F7-08)
Communication (Refer to MD280 Serial Communication Protocol for
9
control output details.)
Factory
Zero offset 0.0%
F3-06 default value
Setup range -100.0% to 100.0%
Factory
AO gain 1.00
F3-07 default value
Setup range -10.00 to 10.00
AO standard output means to output 0 to 0V or (0mA to 20mA), and the
corresponding analog output is 0 to maximum.
AO zero offset coefficient and gain are generally used to modify the zero
drift of the analog output and can also be used to modify the standard
output as analog output value corresponding to any required curve.
If b represents zero offset, k represents k, Y represents actual output, and
X represents standard output, the actual output is calculated as follows:
Y=kX+b
AO zero offset coefficient 100% corresponds to 10V (20mA).
For example, if the analog output is the running frequency, and it is
expected to output 8V (16mA) when the frequency is 0, and output 3V
(6mA) at the maximum frequency, the standard output 0V to 10V shall be
modified to 8V to 3V output. As per the above formula, AO zero offset
coefficient shall be set to “80%”, while A0 gain shall be set to “-0.50”.
- 141 -
Parameter Description MD280/MD280N User Manual
Factory
Maximum frequency of
default 50.0kHz
F3-08 FMP output
value
Setup range 0.1kHz to 50.0kHz
When the multifunctional terminal output function (F3-00) selects FMP
pulse output, it can set the maximum frequency value of output pulse.
RELAY output delay Factory
F3-09 0.0s
time default value
DO1 output delay Factory
F3-10 0.0s
time default value
DO2 output delay Factory
F3-11 0.0s
time default value
DO3 output delay Factory
0.0s
F3-12 time default value
Setup range 0.0s to 3600.0s
These functions mean that DOx signal (including RELAY) to maintain a
valid pulse hold time, as shown in Figure 6-10. Only when DOx signal is
greater than the width of the function code in order to be identified, tw1 in
the diagram can be identified, tw 2 is ignored.
Signal before
time-delay
Signal after
time-delay
Factory
DO output terminal
default 0
F3-13 valid state selection
value
Setup range 0 to 15
Set the valid state of DI input terminal by bits.
0: Positive logic (Valid connected)
1: Antilogical (Invalid disconnected)
The corresponding relationship between BIT and DI is shown as the
following table:
- 142 -
MD280/MD280N User Manual Parameter Description
- 143 -
Parameter Description MD280/MD280N User Manual
0: Direct startup:
When the DC brake time is non-zero value, it can perform DC brake before
start. It is suitable for the applications where small inertia may cause
reverse rotation at the time of startup.
1: Rotation velocity tracking startup: The inverter firstly judges the rotation
velocity and direction of the motor and then starts at the frequency
corresponding to the tracked rotation velocity of the motor, and performs
smooth startup of the motor in rotation without impact.
Factory default
Rotation speed tracking mode 0
value
F4-01 0 Start from stop frequency
Setup range 1 Start from zero speed
2 Start from maximum frequency
1: Track upward from zero frequency, which is used when the inverter is
restarted upon long period of power shutdown.
- 144 -
MD280/MD280N User Manual Parameter Description
Factory
Rotation velocity tracking
default 20
F4-02 fastness and slowness
value
Setup range 1 to 100
Factory
Startup frequency 0.00Hz
default value
F4-03
0.00Hz to maximum frequency
Setup range
(F0-04)
Startup frequency Factory
0.0s
F4-04 retention time default value
Setup range 0.0s to 36.0s
To ensure the torque at the time of startup proper startup frequency shall
be set. In addition, in order to set up magnetic flux when waiting for the
startup of the motor, the startup frequency shall remain for a certain period
of time before accelerating to the setup frequency, as shown in Fig.6-10.
Example 1:
In this case, the inverter will be in the standby status and its output
frequency is 0Hz.
Example 2:
- 145 -
Parameter Description MD280/MD280N User Manual
In this case, the inverter directly starts at 5Hz and remains for 2 seconds,
and then accelerates to the setup frequency 10Hz.
Caution:
Output Frequency Hz
Setting Frequency
Startup Frequency
Time
The DC brake at startup is generally used when the motor is restarted upon
stopping completely.
If the startup mode is direct startup, it will firstly perform DC brake with the
DC brake current at startup and then start running after the period of DC
- 146 -
MD280/MD280N User Manual Parameter Description
Time
Output Voltage (V)
Effective Value
Factory 0
Speed-up/speed-down
default
mode
value
0 Straight
speed-up/speed-down
F4-07 1 S curve
speed-up/speed-down
Setup range
mode A
2 S curve
speed-up/speed-down
mode B
It is used to select the frequency change mode during the inverter start and
stop process.
0: Straight speed-up/speed-down
The output frequency increases or decreases along the straight line. It can
select speed-up/speed-down time via the multifunctional digital input
terminals
- 147 -
Parameter Description MD280/MD280N User Manual
1:S-curve speed-up/speed-down A
f
In the speed-up/speed-down curve, the motor rated frequency b is
always the point of inflexion on S-curve.As shown in 6-14. S curve is
generally used in the applications where the high-speed area above the
rated frequency and short-time speed-up/speed-down.
4 f 2 5
t = ( × ( ) + )×T
9 fb 9
.
Where,
f Refers to setup frequency,
fb
Refers to motor rated frequency,
- 148 -
MD280/MD280N User Manual Parameter Description
Function code of F4-08 and F4-09 can be respectively defined the time
proportion between the S-curve initial-segment and finishing-segment for
S-curve speed-up/speed-down A.And they meet the standard of F4-08 +
F4-09 ≤ 100.0%.
fset
t1 t2 t1 t2 t
fb
T t
- 149 -
Parameter Description MD280/MD280N User Manual
0: Speed-down to stop
When the stop command is valid, the inverter will decelerate to stop
according to the setup deceleration time.
1: Free stop
When the stop command is valid, the inverter will terminate the output
immediately and the load will coast to stop according to the mechanical
inertia.
- 150 -
MD280/MD280N User Manual Parameter Description
- 151 -
Parameter Description MD280/MD280N User Manual
Output Frequency Hz
DC Brake Initial
Frequency at Stop
Time
Output Voltage (V)
Effective Value
DC Brake Waiting Time at S
Time
DC Brake Time at Stop
Running Command
Brake utilization
Factory default value 100%
F4-15 ratio
Setup range 0% to 100%
It is valid for the inverter with built-in brake unit. It can be used to adjust the
brake effect of the brake unit.
- 152 -
MD280/MD280N User Manual Parameter Description
Factory default
Jog enabled during operation 0
value
F5-03
0 Disabled
Setup range
1 Abled
It is used to set whether the jog is allowed during the operation.
If the jog enable during the operation is valid, the inverter will execute the
jog running command firstly and return to the operating status prior to jog
running upon completion of execution of the jog command.
Caution:
1) The jog function is invalid during the DC brake process.
2) If jog is executed during the PLC running process, it will
memorize the running phase when jog occurs and the time that has
been running at this phase. Upon completion of jog, it will restore to
- 153 -
Parameter Description MD280/MD280N User Manual
the running phase as memorized by PLC and continue to run for the
remaining time in this phase.
- 154 -
MD280/MD280N User Manual Parameter Description
Adjusted Setting
Frequency (Hz)
Frequency Falling
Frequency Rising
Output
Frequency (Hz)
Forward Rotation
Reverse Ro
Dead Zone Time
Fig 6-17 Schematic Diagram for Dead Zone Time of Forward and Reverse rotations
- 155 -
Parameter Description MD280/MD280N User Manual
- 156 -
MD280/MD280N User Manual Parameter Description
Factory
Setup running time default 0h
F5-12 value
Setup 0h Invalid
range 1h to 65535h Valid
It is used to set the time for the inverter to perform timing running. If the
running time is set to 0, this function is invalid.
When the accumulated running time (F7-12) reaches this set running time,
the digital output terminal DO outputs the signal of running time arrival.
Refer to the description of “Running Time Arrival” of DO output terminal in
Group F3.
Remark: If it does not perform timing running, please set the “Setup
Running Time” to 0.
- 157 -
Parameter Description MD280/MD280N User Manual
Factory
Frequency detection
default 50.00Hz
value
F5-15 value
0.00Hz to maximum frequency
Setup range
(F0-04)
Frequency detection Factory
hysteresis value (FDT default 5.0%
F5-16
hysteresis) value
Setup range 0.0 to 100.0%(FDT level)
It is used to set the detection value of the output frequency and the
hysteresis value upon release of the output action.
When the inverter running output frequency reaches FDT (F5-15), DO or
relay outputs frequency detection arrival signal till the output frequency falls
below a certain frequency of FDT level (FDT level-F5-15×F5-16), as shown
in Fig.6-5:
Time
Fig.6-18 Schematic Diagram for FDT Level Detection
- 158 -
MD280/MD280N User Manual Parameter Description
Output
Frequency (Hz)
Setting Frequency Detected Amplitude
Frequency Arrival
Detection Signal Time
(DO Relay )
Time
Fig 6-19 Schematic Diagram for Detected Amplitude of Frequency Arrival
Factory default
Random PWM gain 0
F5-18 value
Setup range 0 to 10
Set the random PWM gain, monotonous and harsh electromagnetic noise
can be changed to the heterogeneous and soft noise, the external
electromagnetic interference can be effectively reduced. 0 indicats that the
gain is zero, the largest gain is ten.
Modulation mode Factory default
0
seletion value
F5-19
0 Asynchronous modulation
Setup range
1 Synchronous modulation
In the medium-frequency-motor situation, choose the synchronous
modulation mode to make the output current waveform more stable, more
symmetrical as well as the three-phase current. In the synchronous
modulation mode, the current ripple and electromagnetic noise will be
smaller, but the switching frequency fault increases.
The synchronous modulation mode can be enabled only after the operating
- 159 -
Parameter Description MD280/MD280N User Manual
- 160 -
MD280/MD280N User Manual Parameter Description
Factory
Software over-current
default 200.0%
point
F5-25 value
0.0% to 300.0% ( motor rated
Setup value
current)
Factory
Software over-current
default 0.00s
detection delay time
F5-26 value
0.00s(No detection)
Setup value
0.01s to 600.00s
When the current exceed the software over-current point(F5-25),and the
continuous time arrive the software over-current detection delay time
(F5-26), the reported fault ERR31 (software over-current fault)
Dead-zone Factory
compensation mode default 0
F5-37
selection value
Setup range 0 to 1
Pompt: Use mode of 0 below 200Hz, otherwise use mode 1.
Factory
Cooling fan control default 0
value
Cooling fan runs at motor
F5-38 0
operation
Setup range
Cooling fan runs after
1
power-on
- 161 -
Parameter Description MD280/MD280N User Manual
Feedback Quantity
Factory
PID reference source 0
default value
0 F6-01
Set 1 AI1
F6-00
up 2 AI2
valu
3 PULSE (DI5)
e
4 MS speed
It is used to select target parameter reference channel of process PID.
If the set target value of process PID is a relative value, 100% of the set
value corresponds to 100% of the feedback signal of controlled system.
Caution:
When F6-00 is selected to 4(MS speed), F8-00 (MS speed 0 reference
mode is not selected to 4.
- 162 -
MD280/MD280N User Manual Parameter Description
Factory
PID feedback source 0
default value
Set 0 AI1
F6-03
up 1 AI2
val 2 PULSE(DI5)
ue 3 AI1-AI2
It is used to select the feedback channel of PID.
Factory
PID action direction 0
default value
F6-04
Setup 0 Positive action
value 1 Negative action
Positive action: If the feedback signal is smaller than the PID reference
signal, it is required to boost the output frequency of the inverter to make
PID reach balance. The winding tension PID control is such a case.
Negative action: If the feedback signal is smaller than the PID reference
signal, it is required to decrease the output frequency of the inverter to
make PID reach balance.
The unwind tension PID control is such a case.
Factory default
F6-06 Proportional gain P 20.0
value
- 163 -
Parameter Description MD280/MD280N User Manual
Integral time I: determines the speed at which PID regulator integrates the
derivation between PID feedback value and reference value.Integral time
means that when the derivation between PID feedback value and
reference value is 100%, the adjustment by the integral regulator
(proportional effect and differential effect are omitted) after continuous
adjustment in this period reaches the maximum frequency (F0-09).The
shorter integral time is, the greater the regulating strength will be.
Factory default
Deviation limit 0.0%
F6-09 value
Setup value 0.0% to 100.0%
It is used to set the maximum allowable deviation between the system
feedback value and reference value. When the deviation between the PID
feedback and reference is within this range, the PID stops adjustment. The
deviation limit is calculated according to the percentage of the PID setup
source (or feedback source).
- 164 -
MD280/MD280N User Manual Parameter Description
Setting this function properly will help to focus on the system output
precision and stability.
The deviation limit description is as shown in Fig. 6-21:
Feedback Quantity
Time
Time
- 165 -
Parameter Description MD280/MD280N User Manual
- 166 -
MD280/MD280N User Manual Parameter Description
Caution: When the inverter is running with swing frequency, if the center
frequency changes, it stops swinging until the inverter running from the
current center frequency to the changed center frequency.
- 167 -
Parameter Description MD280/MD280N User Manual
Factory defalult
Setup length 1000m
F7-05 value
Setup range 0m to 65535m
Factory defalult
Actual length 0m
F7-06 value
Setup range 0m to 65535m
Number of pulses per Factory defalult
100.0
F7-07 meter value
Setup range 0.1 to 6553.5
The three parameters such as setup length, actual length and number of
pulses per meter are mainly used for fixed-length control.
The length is calculated through the pulse signal input via the input terminal
DI, and it needs to set the corresponding input terminal to length counting
input terminal. It generally needs to use DI5 terminal input when the pulse
frequency is relatively higher.
Actual length (F7-06) is used for storing the length value calculated. Before
calculating the length, it can modify this parameter value as the initial value of
length calculation, and the actual length is added on the basis of this initial
value, and the actual length calculated will be stored upon power-off.
When the actual length (F-06) exceeds the setup length (F7-05), it outputs
“Length Arrival” signal via the digital output terminal “DO terminal”.
It can perform length reset operation by setting the external input terminal to
“Length Counting Reset” function.
Caution: The current length counting value can be timely viewed via the stop
or running display parameter. Refer to F7-13 and F7-14 function codes for
details.
- 168 -
MD280/MD280N User Manual Parameter Description
Counting Pulse
Setting Count
Designated Count
Reset Signal
Fig6-23 Schematic Diagram for the Setup Counting Value Reference and Designated
Counting Value Reference
Caution:
1) The designated counting value (F7-09) shall not be set to be
higher than the setup counting value (F7-08).
The current counter value can be timely viewed via the stop or running
display parameter. Refer to F7-13 and F7-14 function codes for
details.
Load speed
Factory default
F7-10 display 1.0000
value
coefficient
- 169 -
Parameter Description MD280/MD280N User Manual
It is used to display the accumulated running time of the inverter. When the
accumulated running time (F5-12) reaches this setup running time, the
multifunctional digital output terminal DO will output ON signal. Refer to the
description of “Running Time Arrival” of output terminal in Group F3 for
details.
Caution: The accumulated running time cannot be restored to the factory
default value but can be cleared to zero through clearing the record
information. Refer to FP-01 function code for the description.
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MD280/MD280N User Manual Parameter Description
Meanings of Lower
Eight Digits
- 171 -
Parameter Description MD280/MD280N User Manual
Meanings of Lower
Eight Digits
Setting Frequenc
Bus Voltage (V)
DI Input Status
DI Output Status
AI1 Voltage
AI2 Voltage
S Counting Value
Length Value
et Meanings of Higher
Eight Digits
up 1 to
ra 255
Reserved
ng Reserved
e Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
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MD280/MD280N User Manual Parameter Description
- 173 -
Parameter Description MD280/MD280N User Manual
0:The stop function of STOP/RES key is valid only in the keyboard control
mode: Only when the command source (F0-00) is set to “Operation Panel
Control Channel" will the stop function of STOP be valid and the terminal
and serial communication control mode are invalid.
1: The stop function of STOP/RES key is valid in any control mode: The
stop function of STOP is valid when the command source (F0-00) is in
“Operation Panel Control Channel", “Terminal Command Channel”, or
“Serial Port Communication Control Channel”.
Remark: The fault reset function of the STOP/RES key is valid in any
control mode.
software version
Factory default value —
F7-17 No.
Setup range software version No.
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MD280/MD280N User Manual Parameter Description
- 175 -
Parameter Description MD280/MD280N User Manual
When the frequency source parameter (F0-01) is set to PLC running mode,
it only needs to set the function codes of F8-00 to F8-27 to determine the
running characteristics of PLC.
The symbols of F8-00 to F8-08 determine the running direction of simple
PLC. If the symbol is positive, it indicates that the simple PLC is forward
running; if the symbol is negative, it indicates that the simple PLC is
reverse running.
Simple PLC running is as shown in Fig.6-24:
F8-13 Defined
Acceleration Time
F8-15 Defined
celeration/Deceleration FC-23 Defined
Time Acceleration/Deceleration
Time
Pulse Signal
Factory
PLC running mode 0
default value
0 Single running stop
F8-09
Setup 1 Single running end but the final value
range remains
2 Continuous circulation
0: Single running stop
Upon completion of one single cycle of the inverter, it will stop automatically
and will not start until running command is given again.
1: Single running end but the final value remains
Upon completion of one single cycle of the inverter, the inverter will remain
the running frequency and direction of last one phase. After the inverter is
restarted upon stop, it will run from the initial status of PLC.
2: Continuous circulation
Upon completion of one single cycle of the inverter, it will enter next one
cycle and not stop until stop command is given.
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MD280/MD280N User Manual Parameter Description
- 177 -
Parameter Description MD280/MD280N User Manual
- 178 -
MD280/MD280N User Manual Parameter Description
Speed-up/speed-down
Factory default
time of the seventh 0
value
F8-27 segment of PLC
0 Speed-up/speed-down 1
Setup range
1 Speed-up/speed-down 2
Group F9 Reserved
Group FA Communication Parameters
Refer to MD280F Serial Communication Protocol for details.
Group FB Overload and Protection
Factory
Motor overload protection
default 1
selection
value
0: Without motor overload
0: Invalid
protection function. It is
FB-00 recommended to install a
Setup thermal relay before the motor.
range 1: The inverter has overload
1: Valid
protection function for the
motor. Refer to FB-01 and
FB-02 for the protection setup.
In order to effectively protect the motor with different loads, it needs to set
this parameter according to the overload capacity of the motor. The
overload protection on motor forms an inverse time-lag curve. When the
operating current of the motor reaches the current of 220%×FB-01 times
the rated current of motor, it will report motor overload (ERR11) after it lasts
one minute. When the operating current of the motor reaches the current of
150%×FB-01 times the rated current of the motor, it will report motor
overload (ERR11) after it lasts one minute. The motor overload protection
curve is as shown in Fig.6-25:
- 179 -
Parameter Description MD280/MD280N User Manual
60 min
1 min
Rated Curre
Fig6- 25 Schematic Diagram for inverse time-lag curve of overload protection on motor
Factory
Ovter voltage stall gain 0
FB-03 default value
Setup range 0 to 100
Factory
Over voltage stall protection
default 130%
FB-04 voltage
value
Setup range 120% to 150%
Over-voltage stall gain: It adjusts the inverter’s capacity in suppressing the
current stall. The bigger the value is, the stronger the capacity is. For the
load with small inertia, the value should be small. Otherwise, the dynamic
response of the system will be slow. For the load with large inertia, the
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MD280/MD280N User Manual Parameter Description
value should be large. Otherwise, the suppressing result will be poor, and
over voltage fault may be caused.
Over voltage stall protection voltage: It selects the protection point for over
voltage stall function. When the value is exceeded, the inverter starts to
execute the over voltage stall protection function.
Factory
Over current stall gain 20
default value
FB-05
Setup range 0 to 100
Over current stall protection current: It selects the protection point for over
current stall function. When the value is exceeded, the inverter starts to
execute the over current stall protection function. This value is relative to
the percentage of rated current of the motor.
Over current stall gain: It adjusts the inverter’s capacity in suppressing the
over current stall. The bigger the value is, the stronger the capacity is.
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Parameter Description MD280/MD280N User Manual
Factory
FB-08 Load fault protection function 0
default value
- 182 -
MD280/MD280N User Manual Parameter Description
- 183 -
Parameter Description MD280/MD280N User Manual
Please adjust this parameter according to the load inertia and weight.
Voltage (V)
Bus Voltage
Time
Output Frequency
Setup Frequency
Acceleration Time 1 or
Acceleration Time 2
Time
Factory default
Fault auto reset interval 1.0s
value
FB-15 The waiting time of the
Setup
0.1s to 60.0s inverter from the fault alarm to
range
auto reset.
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MD280/MD280N User Manual Parameter Description
- 185 -
Parameter Description MD280/MD280N User Manual
This value is
a decimal
number. It
displays the
status of all
the digital BIT BIT BIT BIT BIT BIT BIT
Input terminals of 6 5 4 3 2 1 0
F termi the last fault
B nal in the
- statu following
2 s sequence:
6 upon BIT7
fault reserved reserv reserv DI5 DI4 DI3 DI2 DI1
ed ed
It is displayed in decimal numbers corresponding to the
status of each digit. When the input terminal is ON, the
corresponding value is 1. When the input terminal is
OFF, the value is 0. With this value, the user can know
the current digital input signal.
- 186 -
MD280/MD280N User Manual Parameter Description
This value
is a
decimal
number. It
displays
the status
of all the
BI
digital BIT BIT BIT BIT BI
T BIT0
Outpu output 5 4 3 2 T1
6
t terminals
F
termi of the last
B
nal fault in the
-
statu following
2
s sequence
7
upon :
fault BIT7
reserved Re reser reser D D D REA
ser ved ved O O O LY
ve 3 2 1
d
It is displayed in decimal numbers corresponding to the
status of each digit. When the output terminal is ON, the
corresponding value is 1. When the output terminal is
OFF, the value is 0.
Factory
Under-voltage point selection default 100.0%
value
60.0% to 140.0%
FB-28
Three phase: 100.0% corresponding bus
Setup
voltage 350.0V
range
Two phase: 100.0% corresponding bus
voltage 200.0V
The function is used in the applications where the under-voltage point is
required to be changed.
If it is the three-phase inverter, 100.0% corresponding 350.0V, it indicates
that enter the under-voltage status when the bus voltage is below 350.0V.
- 187 -
Parameter Description MD280/MD280N User Manual
Factory
Zero-current detection level default 5.0%
FB-29 value
Setup 0.0% to 300.0%
range 100.0% corresponding motor rated current
Factory
Zero-current detection delay
default 0.10s
time
FB-30 value
Setup
0.01s to 600.00s
range
When the motor is running, if the current of the inverter is below FB-29, and
the continuous time arrive FB-30, the DO output the ‘zero-current is
detected’(DO-18).
- 188 -
MD280/MD280N User Manual Parameter Description
189
Parameter Description MD280/MD280N User Manual
190
MD280/MD280N User Manual Parameter Description
0 No operation
Setup
1 Restore the factory default value
range
2 Clear memory
0: No function.
1: The inverter restores all the parameters excluding the following parameters
to the factory default values:
1) Motor parameters (Group F1): F1-00 to F1-03, F1-15 and F1-16;
2) Accumulated running time (F7-12) and inverter module temperature
(FB-19);
3) Fault type parameters: FB-20 to FB-27;
4) User password: FP-00
2: clear memory: The inverter clears the fault records (FB-20 to F1-03) and
accumulated running time (F7-12) to zero.
191
Parameter Description MD280/MD280N User Manual
192
MD280/MD280N User Manual Parameter Description
EMC
193
EMC MD280/MD280N User Manual
- 194 -
MD280/MD280N User Manual EMC
- 195 -
EMC MD280/MD280N User Manual
inverter, and the other is conduction interference of the inverter. These two
types of interferences cause the surrounding electric equipment to suffer
electromagnetic or electrostatic induction. The surrounding equipment
hereby produces error action. For different interferences, it can be handled
by referring to the following methods:
A、 For the measuring meters, receivers and sensors, their
signals are generally weak. If they are placed nearby the inverter or
together with the inverter in the same control cabinet, they are easy
to suffer interference and thus generate error actions. It is
recommended to handle with the following methods: Put in places
far away from the interference source; do not arrange the signal
cables with the power cables in parallel and never bind them
together; both the signal cables and power cables employ shielded
cables and are well grounded; install ferrite magnetic ring (with
suppressing frequency of 30 to 1,000MHz) at the output side of the
inverter and wind it 2 to 3 cycles; install EMC output filter in more
severe conditions.
B、 When the equipment suffering interferences and the
inverter use the same power supply, it may cause conduction
interference. If the above methods cannot remove the interference,
it shall install EMC filter between the inverter and the power supply
(refer to Section 7.3.6 for the prototyping operation);
C、 The surrounding equipment is separately grounded, which
can avoid the interference caused by the leakage current of the
inverter’s grounding wire when common grounding mode is
adopted.
There are two forms of leakage current when using the inverter. One is
leakage current to the earth, and the other is leakage current between the
cables.
1. Factors of affecting the ground leakage current and solutions:
There are distributed capacitance between the lead cables and the
earth. The larger the distributed capacitance is, the larger the
leakage current will be. The distributed capacitance can be reduced
by effectively reducing the distance between the inverter and the
motor. The higher the carrier frequency is, the larger the leakage
current will be. The leakage current can be reduced by reducing the
- 196 -
MD280/MD280N User Manual EMC
1、 When installing the EMC input filter at the input end of the power
supply, it is recommended to use the EMC filter produced by
Shanghai Eagtop Electronic Technology Co., Ltd.
2、 When using the inverter, please follow its rated values strictly.
Since the filter belongs to Classification I electric appliances, the
metal enclosure of the filter shall be large and the metal ground of
the installing cabinet shall be well earthed and have good
conduction continuity. Otherwise there may be danger of electric
shock and the EMC effect may be greatly affected.
3、 Through the EMC test, it is found that the filter ground must be
connected with the PE end of the inverter at the same public earth.
Otherwise the EMC effect may be greatly affected.
4、 The filter shall be installed at a place close to the input end of the
power supply as much as possible.
- 197 -
EMC MD280/MD280N User Manual
- 198 -
MD280/MD280N User Manual EMC
199
Fault Diagnosis and Countermeasures MD280/MD280N User Manual
Err26 refers to running time arrival fault, please refers to the description of
F5-13 (that is the running time arrival action selection).
Err40 refers to the fast current-limit and overtime fault, please refer to
description of F5-20 (that is the fast current-limit function selection)
Err41 refers to the swiching motor fault, please refers to the description of
group FC (The second motor parameter).
- 200 -
MD280/MD280N User Manual Fault Diagnosis and Countermeasures
Err02
Yes
Check if the output loop of the Perform troubleshooting
inverter is earthed or short circuited
No
Yes
If the acceleration time is too short Prolong the acceleration time
No
If the manual boost torque No Adjust the manual boost torque or
or V/F curve is proper V/F curve
Yes
Yes Adjust the voltage to normal
If the voltage is too low
range
No
Yes Select start upon rotational
If the rotating motor is started velocity follow up or start upon
motor shutdown
No
If load is added suddenly Yes
during the acceleration Remove the additional load
No
The inverter modelis
rather small
- 201 -
Fault Diagnosis and Countermeasures MD280/MD280N User Manual
Err03
Yes
Check if the output loop of the Perform troubleshooting
inverter is earthed or short circuited
No
Yes Prolong the deceleration
If the deceleration time is too short time
No
Yes Adjust the voltage to
If the voltage is too low normal range
Yes
If load is added suddenly Yes Remove the additional
during the deceleration load
No
If the brake unit and brake No Install the brake unit and
resistor are installed brake resistor
No
Ask for technical
support
- 202 -
MD280/MD280N User Manual Fault Diagnosis and Countermeasures
- 203 -
Fault Diagnosis and Countermeasures MD280/MD280N User Manual
Err05
Err06
Yes
If the input voltage is too high Adjust the voltage to normal
range
No
If there are external forces driving
the motor to run during the Yes Remove the external forces or
acceleration process install brake resistor
No
Yes Prolong the acceleration time or
If the acceleration time is too short
install the brake resistor
No
No
If the brake resistor are installed Install brake resistor
No
Ask for technical
support
Fig.8-5 Deceleration over voltage (ERR06)
- 204 -
MD280/MD280N User Manual Fault Diagnosis and Countermeasures
Err07
If there are external forces driving the Yes Remove the external forces or
motor to run during the running process install brake resistor
No
Ask for technical
support
Fig.8-6 Constant speed over voltage (ERR07)
- 205 -
Fault Diagnosis and Countermeasures MD280/MD280N User Manual
- 206 -
MD280/MD280N User Manual Fault Diagnosis and Countermeasures
Yes
No Replace the main
If the main control board is normal
control board
- 207 -
Fault Diagnosis and Countermeasures MD280/MD280N User Manual
Err15
No
Stop the unit with the key STOP Yes
Reset to run
under stall condition
- 208 -
MD280/MD280N User Manual Fault Diagnosis and Countermeasures
Communications fault
Err16
No
Check the host computer
If the host computer is working
cable connection
Yes
No
If the RS485 communication Check the cable for
cable connection is normal communications
Yes
No
If the baud rate setting is correct Set the baud rate correctly
Yes
If the communication parameters No Modify the communication
are set correctly parameters
Yes
Ask for technical
support
Err16
Yes
Check if the 24 V power Replace the contactor
supply contactor is normal
No
- 209 -
Fault Diagnosis and Countermeasures MD280/MD280N User Manual
Err19
- 210 -
MD280/MD280N User Manual Fault Diagnosis and Countermeasures
Err23
- 211 -
Fault Diagnosis and Countermeasures MD280/MD280N User Manual
Err40
- 212 -
MD280/MD280N User Manual Fault Diagnosis and Countermeasures
Fault
No. Possible Cause Solution
Phenomenon
1 、 The inverter has abnormal a) Check the
input power supply. input power supply.
No display or 2 、 8-core and 16-core bus b) Plug/unplug
error codes connecting with the drive board the 8-core and
1
occur upon and control panel is in poor 16-core buses once
power-on contact. again.
3 、 The internal parts of the c) Consult the
inverter are damaged. manufacturer.
1、Measure the insulation
“ERR23” 1. The motor or the
of the motor and output
alarm is output line is short
line with
2 displayed circuited to the
magneto-ohmmeter.
upon earth.
2 、 Consult the
power-on 2、The inverter is damaged.
manufacturer.
The inverter
displays
normally upon
power-on, but
The fan is either damaged or
3 “HC” is Replace the fan
blocked.
displayed
upon running
and stops
immediately.
ERR14 1 、 Reduce the carrier
(module 1、 The carrier frequency frequency.
4 overheating) is set too high. 2、Replace the fan and
fault is 2、 The fan is damaged or clear the air duct.
frequently the air duct is blocked. 3 、 Consult the
- 213 -
Fault Diagnosis and Countermeasures MD280/MD280N User Manual
Fault
No. Possible Cause Solution
Phenomenon
reported. 3、 The internal parts manufacturer.
(thermal coupler or others)
of the inverter are
damaged.
The motor 1、Replace the motor or
does not 1、The motor is either damaged remove the mechanical
5 rotate upon or blocked. fault.
Inverter 2、The parameter is set wrongly. 2、Check and reset the
running. parameters.
1、 The parameter is set 1、Check and reset the
wrongly. relevant parameters.
DI terminal
6 2、 Wiring is conducting 2、Reconnect the cables.
invalid
wrongly. 1、 Consult the
3、 Control board fault manufacturer.
- 214 -
MD280/MD280N User Manual Appendix
1、About Protocol
This serial communication protocol defines the transmission information
and use format in the series communication and it includes master-polling
(or broadcasting) format, master coding method and the content includes
function code of action, transferring data and error checking. The response
of slave is the same structure, and it includes action confirmation, returning
the data and error checking etc. If slave takes place the error while it is
receiving the information or cannot finish the action demanded by master, it
will send one fault signal to master as a response.
2、Application Method
The inverter will be connected into a “Single-master Multi-slave” PC/PLC
control net with RS232/RS485 bus.
3、Bus structure
1)Interface mode
RS485 Hardware interface. The RS232/RS485 conversion device is
required when the interface of the external device is RS232.
2)Transmission mode
There provide asynchronous series and half-duplex transmission mode. At
the same time, just one can send the data and the other only receives the
data between master and slave. In the series asynchronous
communication, the data is sent out frame by frame in the form of
message.
3)Topological mode
In Single-master system, the setup range of slave address is 0 to 247. Zero
refers to broadcast communication address. The address of slave must is
exclusive in the network. That is one condition of one slave machine.
4、Protocol Description
- 215 -
Appendix MD280/MD280N User Manual
- 216 -
MD280/MD280N User Manual Appendix
ADDR 01H
CMD 03H
Byte number high order F0H
Byte number low order 02H
Register number high
00H
order
Register number low order 02H
CRC CHK low order
CRC CHK values are to be calculated
CRC CHK high order
- 217 -
Appendix MD280/MD280N User Manual
- 218 -
MD280/MD280N User Manual Appendix
while (length--)
{
crcValue ^= *data++;
return (crcValue);
}
4)Communication Parameter Address
The chapter is about communication contents, it’s used to control the
- 219 -
Appendix MD280/MD280N User Manual
inverter operation, the status of the inverter and related parameter setup.
Read and write function-code parameters (Some functional code is not
changed, only for the manufacturer use.)
The mark rules of Function code parameters address:
The group number and mark of function code is the parameter address for
indicating the rules.
High byte:F0 to FF
Low byte: 00 to FF
For example: F3-12, the address indicates to F30C.
Caution:
Group FF: Manufacturer Parameters.The user is not allowed to access
Group FF.
Some parameters can not be changed during operation, some parameters
regardless of what kind of state the inverter in, the parameters can not be
changed.Change the function code parameters, pay attention to the scope
of the parameters, units, and relative instructions.
- 220 -
Stop/stop parameter:
Parameter addr. Parameter description
- 222 -
Digital output terminal control: (Write-only)
Command word addr. Command function
BIT0: Output control
BIT1: DO2 output control
6000H BIT2: RELAY1 output control
BIT3: Reserved
BIT4: DO3 output control
Analog output AO1 control: (Write-only)
Command word addr. Command function
7000H 0~7ffff refers to 0%~100%
Pluse output control: (write-only)
Address of locking Contents of locking password command
password command
A000H 0~7fff refers to 0%~100%
Inverter fault description:
Inverter fault address Inverter fault information
0000: No fault
0001: Reserved
0002: Speed-up over current
0003: Speed-down over current
0004: Contant over current
0005: Speed-up over voltage
0006: Speed-down over voltage
0007: Contant speed over voltage
0008: Buffer resistance overload
0009: Under-voltage fault
000A: Inverter overload
8000H
000B: Motor overload
000C: Input phase fault
000D: Output phase faulure
000E: Module overheating
000F: External fault
0010: Communication fault
0011: Contactor fault
0012: Current detection fault
0013: Motor tuning fault
0014: Reserved
0015: EEPROM read and write fault
Inverter fault address Inverter fault information
0016: Reserved
0017: Earth short circuit fault
0018: Reserved
0019: Reserved
001A: Running time arrival fault
001F: Software over current fault
0028: Fast current limiting
0029: Swithing motor fault
Descriptive data of communication fault information (fault code)
Communication fault
Fault function description
address
0000: No fault
0001: Password error
0002: Command code error
0003: CRC check error
8001H 0004: Invalid address
0005: Invalid parameter
0006: Parameter change invalid
0007: The system is locked
0008: Being restoring parameters
Caution: The baud rate of the host computer and the inverter must be
consistent.Otherwise, communication is impossible. The higher baud rate is,
the faster communication is.
- 224 -
Data format Factory 0
default value
Setup 0 No check:data format<8,N,2>
FA-01 range 1 Even parity check :data format
<8,E,1>
2 Odd parity check : data
format<8,O,1>
When use the parity or odd parity, the length of each byte is 11 bits, which
includes a start bit, 8 data bits, 1 parity bit and one end bit.
When use the no check, the length of each byte is 11 bits, which includes a
start bit, 8 data bits, 1 parity bit and 2 end bits. The data format of the host
computer and the inverter setup must be consistent, otherwise,
communication is impossible.
Local addr. Factory 1
FA-02 default value
Setup range 0 to 247,0 is broadcast address
The function code used to identify the local address of the inverter.The local
address is unique (except the broadcast address), which can realize the
broadcast function of host computer.
Caution: When the local address is set to zero, that is the broadcast address,
which can only receive and perform the broadcast address of host computer
but not respond to the host computer.
- 226 -
Warranty Agreement
- 228 -
Product Warranty Card
Add. of unit:
Tel.:
P.C.:
Product model:
Name of agent:
Failure
information
Maintenance personnel: