DPU Series (3phase) : Features
DPU Series (3phase) : Features
DPU Series (3phase) : Features
DPU series realizes users optimal convenience by increasing stability of SCR Unit and removing noise of electrical furnace.
Features
Precise feedback (static current, static voltage, static power) by measuring RMS value. Adoption of phase control and zero-crossing cycle control (fixed cycle, variable cycle) for various load. Multi input for control input signal (current, voltage, potentionmeter, etc.). Includes customized 6 digital inputs(Event input). Various alarm output including current error, heater disconnection etc. Indicating various setup, input/output by 7 segment and BAR LED. MODBUS RTU protocol by RS485 communication.
Ordering codes
DPU 3 2 A
-
025 R
Option
R D A N Type 025 040 050 070 080 100 120 150 180 200 250 350 400 500 600 750 950 Type A BA BB C D E 1 2 3 4 3 DPU
RS485 Remote Display Unit Remote Display Unit + RS485 None 3 phase 25A 40A 50A 70A 80A 100A 120A 150A 180A 200A 250A 350A 400A 500A 600A 750A 950A 3 phase 0~50A 70~120A 150~200A 250~350A 400~600A Option 110V 220V 380V 440V 3-phase
DIGITAL POWER CONTROLLER UNIT
Load
Phase control : Resistance load, Inductive load ON/OFF, CYCLE control : Resistance load
Power consumption Under 10VA (Except for power supply for fan operation) Indicating type
Display the indicating value and setting value : 7 segment 4 row, Display the status : 6 LED Display the percentage of the indicating value : 11 LED BAR Static voltage feedback control : within 3.0% F.S of rating voltage (within 10%F.S fluctuation of rating voltage) Static current feedback control : within 3.0% F.S of rating voltage (within 1~10 times fluctuation of load resistance) Static power feedback control : within 3.0% F.S of rating voltage (within 10%F.S fluctuation of rating voltage and within 3.0% F.S of rating voltage(within 1~10 times fluctuation of load resistance) NORMAL control : within 10% F.S of rating voltage
Output accuracy
Setting method Control input Digital input (DI) Indicating type Min. indicating output Main function Alarm function
Size
AUTO/MAN conversion, RUN/STOP conversion, RESET, Holding output, designate SP(SP1~6) Control input, power frequency, load voltage, load current, load power, load resistance Over 2.5% of rated voltage / current SOFT START(100 sec.), SLOW UP/DOWN(100 sec.), output High/Low limit, current limit, starting limit, BASE-UP
Over-current alarm, current alarm, over-voltage alarm, fuse disconnection alarm, abnormal heatsink alarm, abnormal element alarm, heater disconnection alarm Selecting the indicating content on display, selecting the indicating content on bar graph, indicating FULL load,lock function, user-correction function(ZERO/slope), selecting the indicating direction of load resistance
Specifications
Other functions Model The number of phase Power voltage Allowable voltage range Rating frequency Size Min. load current Output range DPU series 3 PHASE 110VAC / 220VAC / 380VAC / 440VAC (The extra power supply for fan operation is unnecessary) 10% of rating voltage 50/60Hz(Automatic recognition), Allowable frequency range:2Hz(performance is guaranteed as 1Hz) Refer to Dimension diagram 1A Phase control : 0 ~ 98%, ZC control : 0 ~ 100% Phase control : NORMAL control(NON-FEEDBACK), Static voltage/Static current/Static power control (FEED BACK) CYCLE control(ZC) : fixed cycle control, variable cycle control ON/OFF Control(ZC) Optional function Dielectric strength Vibration resistance Isolation resistance Noise resistance Ambient temperature Storage temperature Ambient humidity Weight
RS485 MODBUS 200VAC 50/60Hz for 1 minute (between input terminal and power terminal) 0.75mm amplitude at frequency of 5~55Hz in each of X,Y,Z directions for 2 hours Min. 200M (500VDC mega STD) 2kV the square wave noise (pulse width:1) by the noise simulator -10 ~ 50C (at non-freezing status) -20 ~ 80C (at non-freezing status) 5 ~ 90% RH A Type : 6.5kg, B Type : 11.5kg
Control type
E-9
DPU series(3Phase)
Dimensions
A Size : DPU3A - 25 / 40 / 50
B
Indicators
C
Converters
D
Controllers
E
Thyristor Units
Pressure Transmitters
G
Temperature Transmitters
Connections
Input
RS485(+)
Functions
Control method [ CONTROL Method : C-AD ]
Control method Control mode NORMAL mode Static voltage mode Static current mode Static power mode Cycle control Fixed cycle control ON/OFF control Parameter
RS485(-) RS485(G)
Voltage Input
Voltage
External VR
NORMAL Mode (Phase Angle without feedback)[ PR] - As normal output method, control angle is divided proportionally depending on control input signal. - Following diagram is indicating the feature of output and insufficient power and over-current can be generated based on the middle position of control input.
100 80
U
Load
V
Load
Load
60 40 20 0
12
16
20
Input signal(mA)
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DPU series(3Phase)
Static voltage Mode (Voltage-Feedback)[ V-FB ] - As temperature coefficient of electric resistance is short of load (iron, chromium, nichrome, etc.), Static voltage Mode outputs regular voltage of being in proportion to control input for load resistance fluctuation so as not to change output voltage.
140
Nichrome
120 100
Chromium
80
500 Temperature(C) A
1000
1500
100
75
50
25
20
40
60
80
0 100
Output current(%)
Static current Mode (Current-Feedback) [ C-FB ] - As temperature coefficient of electric resistance is load (iron, chromium, nichrome, etc.), largely changed as 6~12 times by standardizing normal temperature, Static voltage Mode outputs regular voltage of being in proportion to control input for load resistance fluctuation so as not to change output voltage.
140 120 100 80 Cubic resistance volume 60 ( ) 40 20 Kanthal Molybdenum Tungsten
- Output feature is equivalent to 50% of output of connecting curve between the point(A) of [output voltage 100% x output current 50%] and the point(B) of [output voltage 50% x output current 100%], and current output capacity of this unit should be selected as twice of load capacity. Fixed cycle control (Burst firing with fixed time base)[ F-CY ] - It controls power supplied to load by reiterating ON/OFF cycle as below by regular ratio according to control input signal for regular cycle(60 cycles). Ex.) Fixed cycle(60 cycles) control - when controlling output by 40%
36 Cycles OFF
2000
2500
25
50
75
20
40
60
80
100
Output current(%)
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DPU series(3Phase)
Variable cycle control (Burst firing with variable time base)[ V-CY ] - It controls requiring power depending on control input signal by using the number of minimum cycle of AC Sine wave and optimizes temperature change of objective control. Ex.) Variable cycle control - when controlling output by 30%
Starting limit [ S-LM ] and time of Starting limit [ time of Starting limiter: S-LT ] - Starting limit function sets limit output and time protecting from inrush current when STOP is converted to RUN, alarm RESET after Power-on. - Starting limit function is operating by Phase control regardless of control method(phase control, cycle control). - Setting range of Starting limit : 0 ~ 100% of output - Setting range of Starting limit time : 0 ~ 100sec. (but, when setting as 0sec, starting limit is not used).
SLOW UP setting time
Recorders
B
Indicators
C
Converters
OFF
ON
OFF
ON 10 Cycles
OFF
ON
D
Controllers
ON/OFF control type [ ONOF ] - Zero-Cross Switching - When control input is OFF, output is OFF(0%) / When control input is ON, output is ON(100%) (Same as SSR)
Output
E
Thyristor Units
C Time SLOW DOWN setting time A : SOFT START function is terminated B : SLOW UP function is terminated C : SLOW DOWN function is terminated
F
Pressure Transmitters
G
Temperature Transmitters
SOFT START setting time Control input 100% Starting limit setting time 0%
SOFT START function [ ST-T ] - When supplying power, it sets time to protect load by output increased groclually within setting time. Controlling load with flowing inrush current(platinum, molybdenum, tungsten, infrared lamp, etc.) or control input is changed rapidly. - SOFT START function is operating by Phase control regardless of control method(phase control, cycle control). - SOFT START function is setting time which is reaching up to 0~100% of output. - Setting range of SOFT START : 0 ~ 100sec. (0sec : do not use SOFT START function). - SOFT START function is operated as only following condition. : When operating as at STOP after POWER ON and RESET - SOFT START function is not operated when objective output is 0% (control input is 0%). - SOFT START function is terminated if reaching to objective output value. - SOFT START setting time t means the time of till output supplied to load increased to 100% and time for reaching is t/2 in case of final objective output value 50%. - Final objective output value reaching time = objective output(%) x t. Ex) SOFT START time : 25 sec. Final objective output : 80 0.8 X 25 = 20sec.
In case of output supplied to load is 100% 100
Setting output slope function [ OUTPUT SLOPE : SLOP ] - This function is to set fluctuating ratio of output depending on control input in range of 0.00~1.00. - When setting slope, output value is [input(%) X slope value].
100 80 Output 60 (%) 40 20 1.00 0.80 0.60 Output slope value 0.40 (%) 0.20
0.00
Output (%) 50
BASE-UP function [ Base-up setting : B-UP] - BASE-UP function is adding BASE - UP setting value to input signal. - The range of BASE-UP setting value is BASE-UP setting value < High output limit value. - BASE-UP setting value is possible for setting when only output Low limit value is 0%. In case of output limit value is set to voluntary value, BASE-UP function parameter [B-UP] is not indicated. - When initial operation, it is restricted by starting limit value. - When setting BASE-UP, output is [input(%) X slope value + BASE-UP setting value].
t/2
Time
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DPU series(3Phase)
Setting value of BASE-UP(%) 60 40 20 100 80 60 Output (%) 40 20 0
SLOW UP / SLOW DOWN function [ UP-T/ DN-T] - As this function has same purpose with SOFT START function, it is, when initial operation, operating once but SLOW UP / SLOW DOWN function is operating during RUN. - SLOW UP / SLOW DOWN function is operating by Phase control regardless of control method(phase control, cycle control) as like SOFT START function. - SLOW UP / SLOW DOWN function is terminated if reaching to objective output value. - Setting range of SLOW UP / SLOW DOWN : 0 ~ 100sec. (0sec : do not use SLOW UP / SLOW DOWN function).
SLOW UP setting time 100
B
Output (%) 50
C 0 t/2
t
A : SOFT START function is terminated B : SLOW UP function is terminated C : SLOW DOWN function is terminated
When terminal no.8 - 11 is ON(CLOSE) When terminal no.9 - 11 is ON(CLOSE) When terminal no.10 - 11 is ON(CLOSE)
High / Low output limit restricting function [High-output limit restricting value ( HIGH- OUTPUT LIMIT : H-OL ), Low-output limit restricting value(LOW-OUTPUT LIMIT : ), Low-output limit restricting value(LOW-OUTPUT LIMIT : L-OL) ] - High / Low output limit restricting function is for protecting load by restricting the range of output. - Setting range : 0% Low-output limit restricting value < High-output limit restricting value 100%
100 80 60 Output (%) 40 20 0 0 25 50 75 Control input signal(%) 10.0% (Low output 100 limit value) : L-OL 80.0% (High output limit value) : H-OL
- RESET function [ RST ] After selecting RESET function and suitable Digital Input is ON(CLOSE) and if OFF, instrument will be reactivated after RESET. - HOLD function [ HOLD ] After selecting HOLD function and if suitable Digital Input is ON(CLOSE), output and indicating value of instrument will be holded. (When Digital Input is stayed by ON(CLOSE) only, HOLD will be operated) - Single SP function [ SP-1, SP-2, SP-3 ] Single SP function designate SP-1, SP-2, SP-3 for each Digital Input and output is reaching to suitable SP.
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DPU series(3Phase)
It is possible for setting on each DI-1, DI-2, DI-3 and dual setting is possible as well and if SP-1 is designated, SP1 / if SP-2 is designated, SP2 / if SP-3 is designated, SP3 will be indicated on each Operating MODE. Namely, if it is not designated, it will not indicate SP value setting parameter on Operating MODE.
Ex) Opreating MODE SP value setting parameter
DI-1
DI-2
DI-3
Output (%)
Set proportion and Integral constant of Feed Back control - Proportional Integral Control : It is proportional control added to integral control. Proportional control accomplishes soft control without overshoot or hunting about setting value, and integral control is to reach stably to setting value by revising offset automatically. - This instrument is set proportional constant and integral constant to optimum value when shipped. If user would like to change proportional constant and integral constant voluntarily and if using Feedback control, it will be possible for generating overshooting or hunting. Set proportional constant [ P ] - It compensates tolerance for objective value proportionally. - Setting range : 0(0%) ~ 2000(100%) - Overshooting or hunting will be generated if setting small proportional constant value, and if setting large proportional constant value, the response will be slow. Set integral constant [ I] - It compensates accumulated tolerance for objective value proportionally. - Integral constant set as time is the same time both proportional volume and integral volume. - Setting range : 0.1 ~ 999.9 sec. - Overshooting or hunting will be generated if setting small integral constant value, and if setting large integral constant value, the response will be slow.
Above P, I parameter is indicated only if control mode controls Feed Back control.
Recorders
B
Indicators
C
Converters
D
Controllers
E
Thyristor Units
F
Pressure Transmitters
G
Temperature Transmitters
- Multi SP function [ SP-M ] Multi SP function can set the amount of 6 SPs and control output according to the 3 Digital Input contents. Multi SP function can only be selected on DI-1 and if selecting SP-M in DI-1, DI-2 and DI-3 parameter are not indicated. If selecting SP-M on DI-1, 6 parameters which are able to set will be generated on Operating Mode. ( SP1, SP 2, SP 3, SP 4, SP 5, SP 6)
Ex) DI-1 A B C D E F G
Input compensation[INPUT BIAS : IN-B ] - Input compensation function is compensating OFFSET of both actual input value and measured input value. - Input compensation setting range : -99.9 ~ 99.9%
Ex) If the type of input is 4-20mA : When 4mA is authorized, if input monitor value indicates 0.5%, input monitor value will be 0.0% if set by In-b=-0.5 100 Outputted input 80 signal Actual input (%) signal(%) 60 40 20 0 Input corrected signal(%) Actual input signal 100 (%)
DPU Series (1Phase)
DI-2
DI-3
o o o o
o o o o
o o o o
Output (%)
25
50
75
Correction of Input slope [ SPAN : SPAN ] - It corrects Gain for measured 100% input about actual 100% input value. - Setting range of input slope correction : -99.9 ~ 99.9%
Ex ) If the type of input is 4-20mA : When 20mA is authorized, if input monitor value indicates 99.5%, input monitor value will be 100.0% if set by IN-B=0.5 100 Outputted 80 input signal 60 (%) 40 20 0
80 60
25
50
75
100
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DPU series(3Phase)
Display selected contents [ Display selected contents : DISP ] - Set indicating value contents of display on operating mode. - Selected possible indicating contents : load voltage[ LD-V ], load current[ LD-A ], power[ KW], control input[ REF] BAR GRAPH's display selected contents [ Bar graph's content : BAR ] - Able to select contents which BAR GRAPH indicates. - Selected possible indicating contents : load voltage[ LD-V ], load current[ LD-A ], power[ KW ], control input[ REF] Selecting load resistance indicated direction function[ dRES ] - When monitoring load resistance value on Monitoring Mode, this function is to select indicating by increased direction or decreased direction for load resistance value be monitoring.
Refer to 9-24. Heater disconnected alarm.
Automatic recognized full load function [ F-LD ] - This function is to recognize 0~100% about connected load. - If press M key after select at Setting Mode 1 group, load automatic recognition will be operated. - In need of regular performance according to the change of passing year of load.
When automatic recognition, it is operating by 100% output for approx. 3sec.
Lock parameter function [ LOCK ] - This function is to restrict check and change for setting value of parameter.
OFF LOC1 LOC2 LOC3
Operating Mode Setting group Setting Mode 2 Setting group Setting Mode 1 Setting group : Enable and setting, : Possible for check / Disable to setting : Disable to check
- Lock parameter function is to be set by entering into Setting MODE 1 group but if selecting LOC2 or LOC3 on Lock function parameter and entering into Setting MODE 1 group, it will indicate Lock function parameter only. Over current generation and alarm Set over current alarm value[ OC-V ] - It sets over current alarm value in the range of 0.0~120.0% of rated current. Over current alarm delayed time[ OC-T ] - After reaching to over current alarm value by setting time in the range of 0~100 sec. and passing delayed time, over current alarm will be operated. When over current alarm is on, the condition of instrument - If over current alarm is on, output will be STOP and alarm will be stayed. - O-C turns off at 0.5 sec. intervals on display and EVT lamp turns off at 0.5 sec. intervals. - If alarm output designation is NON, O-C turns off on display even if alarm output is not generated. Alarm off - Alarm off method is converted to reapplying the electric current, RESET, STOP of power. Over current alarm output recognized parameter : OC-A (Initial value : AL1) - This function is to recognize 0~100% about connected load.
Current alarm Current alarm is on - If reaching to current restricted setting value, alarm will be on. When generating over current alarm, the condition of instrument - Even if current alarm is on, control operation will be stayed. - Both C-AL and indicating value turn off at 2 sec. intervals on display and EVT lamp turns off at 0.5 sec. intervals. - If alarm designation is NON, C-AL turns off on display even if alarm output is not generated. Alarm off : If current is under current restricted setting value, alarm will be off. Current alarm output designating parameter : C-AL (Default value : AL2) Over voltage generate and alarm Set over voltage alarm value [ OV-V ] - It sets over voltage alarm value in the range of 0.0~120.0% of rated current. Over voltage alarm delayed time[ OV-T ] - After reaching to over voltage alarm value by setting time in the range of 0~100 sec. and passing delayed time, over voltage alarm will be operated. When over voltage alarm is on, the condition of instrument - If over voltage alarm is on, output will be STOP and alarm will be stayed. - O-U turns off at 0.5 sec. intervals on display and EVT lamp turns off at 0.5 sec. intervals. - If alarm output designation is NON, O-U turns off on display even if alarm output is not generated.
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DPU series(3Phase)
Current limit[ C-LM ] Current limit function (When controlling static voltage) - Current limit function is to protect thyristor by controlling current when inrush current is using large load and especially in case of voltage feed back, because current is flowed for resistance value of load and rated current of thyristor is not over by only voltage control, it can prevent over rated current by restricting current. - Current limit setting range : 0 ~ 110% of rated current Current alarm (When controlling the exception of static voltage)If current reaches setting current limit value, designated alarm will be on. Abnormal of element(Thyristor) and alarm Element(Thyristor) abnormal alarm is on - Even if output is o%, 10% or more of rated current is continuously flowing for over 3sec(or over 5cycle), element(Thyristor) abnormal alarm will be on. When element(Thyristor) abnormal alarm is on, the condition of instrument - If element(Thyristor) abnormal alarm is on, output will be STOP Mode and alarm will be stayed. - SCR turns off at 0.5 sec. intervals on display and EVT lamp turns off at 0.5 sec. intervals. - If alarm output designation is NON, SCR turns off on display even if alarm output is not generated. Alarm off - Alarm off method is converted to reapplying the electric current, RESET, STOP Mode of power. Element(Thyristor) abnormal alarm output designating parameter : SCR(Default value : AL1) Burn-out heater (load resistance) alarm Burn-out heater alarm is on. - When load resistance automatically recognize Full load, if setting value is staying less than connected load resistance(When setting load resistance indicating direction DOWN) for 30 sec., burn-out heater alarm will be on. - When load resistance indicating direction is set to UP and more than setting value, alarm will be on. - Control method is operating by Phase control regardless of control method(Phase control, Zero crossing control - For suitable operation, it needs load current of control output(phase control or cycle control) of 10% and rated current over 30%. Burn-out heater alarm setting parameter( HB-V ) - Setting range : 10 ~ 500% When burn-out heater alarm is on, the condition of instrument. - Even if burn-out heater alarm is on, control operation will be stayed. - H-BY turns off at 2 sec. intervals on display and EVT lamp turns off at 0.5 sec. intervals. - If alarm output designation is NON, H-BY turns off on display even if alarm output is not generated. Burn-out heater alarm hysteresis. - When burn-out heater alarm is on, the interval of ON/OFF will be fixed to 1%.
Ex) When burn-out heater alarm setting value is 50%, the point of alarm ON:50%, the point of alarm OFF:49%. ON OFF 49% Setting value 50%
Recorders
Alarm off
B
Indicators
C
Converters
D
Controllers
C-AL H-BK
Operation is stayed
E
Thyristor Units
When burn-out and abnormal element, if alarm off is not possible by reapplying of electric power, refer to[10.Maintenance].
F
Pressure Transmitters
G
Temperature Transmitters
Alarm OFF - If it is less than burn-out heater setting value, alarm will be automatically off. Burn-out heater alarm output designating parameter : HB-A (Initial value : AL2)
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