G6 Installation Boitier A

COMBIVERT G6
INSTRUCTIONS FOR USE | INSTALLATION G6 HOUSING A
Translation of the original manual

Document 20086425 EN 05
Preface
Preface
The described hard- and software are developments of the KEB Automation KG. The
enclosed documents correspond to conditions valid at printing. Misprint, mistakes and
technical changes reserved.
Signal words and symbols

Certain operations can cause hazards during the installation, operation or thereafter.
There are safety informations in the documentation in front of these operations. Security
signs are located on the device or machine. A warning contains signal words which are
explained in the following table:
DANGER Dangerous situation, which will cause death or serious injury in case of
non-observance of this safety instruction.
WARNING Dangerous situation, which may cause death or serious injury in case of
non-observance of this safety instruction.
CAUTION Dangerous situation, which may cause minor injury in case of non-ob-
servance of this safety instruction.
NOTICE Situation, which can cause damage to property in case of non-obser-

vance.
RESTRICTION
Is used when certain conditions must meet the validity of statements or the result is
limited to a certain validity range.
Is used when the result will be better, more economic or trouble-free by follow-
ing these procedures.
More symbols
► This arrow starts an action step.
•/- Enumerations are marked with dots or indents.
=> Cross reference to another chapter or another page.
Note to further documentation.

www.keb.de/service/downloads
3
Preface
Laws and guidelines

KEB Automation KG confirms with the EC declaration of conformity and the CE mark on
the device nameplate that it complies with the essential safety requirements.
The EC declaration of conformity can be downloaded on demand via our website. Fur-
ther information is provided in chapter "Certification".
Warranty and liability

The warranty and liability on design, material or workmanship for the acquired device is
given in the general sales conditions.
Here you will find our general sales conditions.

www.keb.de/terms-and-conditions
Further agreements or specifications require a written confirmation.
Support
Through multiple applications not every imaginable case has been taken into ac-
count. If you require further information or if problems occur which are not treated de-
tailed in the documentation, you can request the necessary information via the local
KEB Automation KG agency.
The use of our units in the target products is outside of our control and therefore
lies exclusively in the area of responsibility of the customer.
The information contained in the technical documentation, as well as any user-specific
advice in spoken and written and through tests, are made to best of our knowledge and
information about the intended use. However, they are regarded as being only informal
and changes are expressly reserved, in particular due to technical changes. This also
applies to any violation of industrial property rights of a third-party. Selection of our units
in view of their suitability for the intended use must be done generally by the user.
Tests can only be done within the intended end use of the product (application) by
the customer. They must be repeated, even if only parts of hardware, software or
the unit adjustment are modified.
Copyright
The customer may use the instructions for use as well as further documents or parts
from it for internal purposes. Copyrights are with KEB Automation KG and remain valid
in its entirety.
This KEB product or parts thereof may contain third-party software, including free and/
or open source software. If applicable, the license terms of this software are contained
in the instructions for use. The instructions for use are already available to you, can be
downloaded free of charge from the KEB website or can be requested from the respec-
tive KEB contact person.
Other wordmarks or/and logos are trademarks (™) or registered trademarks (®) of their
respective owners.
4
Table of Contents
Table of Contents
Preface..................................................................................................................................................... 3
Signal words and symbols.............................................................................................................. 3
More symbols..................................................................................................................................3
Laws and guidelines........................................................................................................................ 4
Warranty and liability....................................................................................................................... 4
Support .........................................................................................................................................4
Copyright.........................................................................................................................................4
Table of Contents.................................................................................................................................... 5
List of Figures.......................................................................................................................................... 8
List of Tables........................................................................................................................................... 9
Glossary................................................................................................................................................. 10
Standards for drive converters / control cabinets.............................................................................. 12
Product standards that apply directly to the drive converter......................................................... 12
Basic standards to which drive converter standards refer directly................................................ 12
Standards that are used in the environment of the drive converter.............................................. 13
1 Basic Safety Instructions............................................. 14

1.1 Target group.................................................................................................................................... 14
1.2 Transport, storage and proper use............................................................................................... 14
1.3 Installation....................................................................................................................................... 15
1.4 Electrical connection..................................................................................................................... 16
1.4.1 EMC-compatible installation................................................................................................ 17
1.4.2 Voltage test..........................................................................................................................17
1.4.3 Insulation measurement...................................................................................................... 17
1.5 Start-up and operation................................................................................................................... 18
1.6 Maintenance.................................................................................................................................... 19
1.7 Repair.............................................................................................................................................. 20
1.8 Disposal........................................................................................................................................... 20
2 Product Description..................................................... 21
2.1 Specified application...................................................................................................................... 21
2.1.1 Residual risks...................................................................................................................... 21
2.2 Unintended use............................................................................................................................... 21
2.3 Product features............................................................................................................................. 22
2.4 Part code......................................................................................................................................... 23
3 Technical Data............................................................... 25
3.1 Operating conditions..................................................................................................................... 25
3.1.1 Climatic ambient conditions................................................................................................. 25
3.1.2 Mechanical ambient conditions........................................................................................... 26
3.1.3 Chemical / mechanical active substances........................................................................... 26
3.1.4 Electrical operating conditions............................................................................................. 27
5
Table of Contents
3.1.4.1 Device classification......................................................................................................... 27

3.1.4.2 Electromagnetic compatibility........................................................................................... 27
3.2 Technical data G6 230V class........................................................................................................ 28
3.3 Technical data G6 400V class........................................................................................................ 29
3.3.1 Overload and derating......................................................................................................... 30
3.4 Dimensions and weights............................................................................................................... 32
3.4.1 Control cabinet installation.................................................................................................. 33
3.4.1.1 Ventilation in the control cabinet....................................................................................... 33
4 Installation and Connection......................................... 34

4.1 Overview of the COMBIVERT G6.................................................................................................. 34
4.2 Connection of the power unit........................................................................................................ 35
4.2.1 Connection of the voltage supply........................................................................................ 35
4.2.1.1 Wiring instructions............................................................................................................ 35
4.2.1.2 Line terminal strip X1A..................................................................................................... 36
4.2.2 AC connection.....................................................................................................................37
4.2.2.1 AC supply 230V / 1-phase................................................................................................ 37
4.2.2.2 AC supply 400V / 3-phase................................................................................................ 37
4.2.2.3 Cross-section of the supply cable.................................................................................... 38
4.2.3 Connection at DC voltage supply........................................................................................ 38
4.2.3.1 Terminal block X1B DC connection.................................................................................. 38
4.2.4 Connection of the motor...................................................................................................... 38
4.2.4.1 Selection of the motor cable............................................................................................. 38
4.2.4.2 Cable-feed disturbances depending on the motor line length at AC supply..................... 39
4.2.4.3 Motor line length at operation with DC voltage................................................................. 39
4.2.4.4 Motor cable length for parallel operation of motors.......................................................... 39
4.2.4.5 Motor cable cross-section................................................................................................ 39
4.2.4.6 Interconnection of the motor............................................................................................. 39
4.2.4.7 Terminal block X1B motor connection.............................................................................. 40
4.2.4.8 Wiring of the motor........................................................................................................... 40
4.2.5 Connection of a braking resistor.......................................................................................... 41
4.2.5.1 Terminal block X1B connection braking resistor............................................................... 41
4.2.5.2 Wiring of an intrinsically safe braking resistor.................................................................. 41
4.2.6 Connection of a temperature detection............................................................................... 42
4.2.6.1 Temperature detection terminals T1, T2........................................................................... 42
4.2.6.2 Terminal block X1C temperature detection...................................................................... 42
4.2.6.3 Use of the temperature detection..................................................................................... 43
4.2.7 Final test information........................................................................................................... 43
4.3 Calculation of the motor voltage................................................................................................... 43
6
Table of Contents
5 Certification................................................................... 44
5.1 CE-Marking...................................................................................................................................... 44
5.2 Functional safety............................................................................................................................ 44
5.3 UL Marking...................................................................................................................................... 44
5.4 Further informations and documentation.................................................................................... 47
6 Accessories................................................................... 48
6.1 Mounting kit shield connection braket......................................................................................... 48
7 Revision History........................................................... 49
7
List of Figures
List of Figures
Figure 1: Maximum load and derating depending on the switching frequency................................ 30
Figure 2: Overload characteristic..................................................................................................... 31
Figure 3: Dimensions and weights for G6 housing A....................................................................... 32
Figure 4: Mounting distances........................................................................................................... 33
Figure 5: Control cabinet ventilation................................................................................................ 33
Figure 6: Overview of the COMBIVERT G6..................................................................................... 34
Figure 7: Input circuit / drive converter type..................................................................................... 35
Figure 8: Line terminal strip X1A...................................................................................................... 36
Figure 9: Connection of the mains supply 230 V / 1-phase.............................................................. 37
Figure 10: Connection of the mains supply 400 V / 3-phase.............................................................. 37
Figure 11: Connection at DC voltage supply..................................................................................... 38
Figure 12: Terminal block X1B DC connection.................................................................................. 38
Figure 13: Terminal block X1B motor connection.............................................................................. 40
Figure 14: Wiring of the motor...........................................................................................................40
Figure 15: Terminal block X1B connection of a braking resistor........................................................ 41
Figure 16: Wiring of an intrinsically safe braking resistor................................................................... 41
Figure 17: Temperature detection terminals T1, T2........................................................................... 42
Figure 18: Terminal block X1C temperature detection....................................................................... 42
Figure 19: Wiring examples of the temperature input........................................................................ 43
Figure 20: G6 housing A with optional mounting kit........................................................................... 48
8
List of Tables
List of Tables
Table 1: Part code..........................................................................................................................24
Table 2: Climatic ambient conditions.............................................................................................. 25
Table 3: Mechanical ambient conditions......................................................................................... 26
Table 4: Chemical / mechanical active substances........................................................................ 26
Table 5: Device classification......................................................................................................... 27
Table 6: Electromagnetic compatibility........................................................................................... 27
Table 7: Technical data 230V class................................................................................................ 28
Table 8: Technical data 400V class................................................................................................ 29
Table 9: Calculation of the motor voltage....................................................................................... 43
Table 10: Mounting kit shield connection braket for G6 housing A................................................... 48
9
Glossary
Glossary
0V Earth-potential-free common point Endat Bidirectional encoder interface of the
1ph 1-phase mains company Heidenhain
3ph 3-phase mains EtherCAT Real-time Ethernet bus system of the
AC AC current or voltage company Beckhoff
AFE From 07/2019 AIC replaces the pre- Ethernet Real-time bus system - defines pro-
vious name AFE tocols, plugs, types of cables
AFE filter From 07/2019 AIC filter replaces the FE Functional earth
previous name AFE filter FSoE Functional Safety over Ethernet
AIC Active Infeed Converter FU Drive converter
AIC filter Filter for Active Infeed Converter GND Reference potential, ground
Application The application is the intended use GTR7 Braking transistor
of the KEB product HF filter High frequency filter to the mains
ASCL Asynchronous sensorless closed Hiperface Bidirectional encoder interface of the
loop company Sick-Stegmann
Auto motor Automatically motor identification; HMI Human machine interface (touch
ident. calibration of resistance and induc- screen)
tance HSP5 Fast, serial protocol
AWG American wire gauge HTL Incremental signal with an output
B2B Business-to-business voltage (up to 30V) -> TTL
BiSS Open source real-time interface for IEC International standard
sensors and actuators (DIN 5008) IP xx Degree of protection (xx for level)
CAN Fieldbus system KEB product The KEB product is subject of this
CDF Cyclic duration factor manual
CDM Complete drive module including KTY Silicium temperature sensor (pola-
auxiliary equipment (control cabinet) rized)
COMBIVERT KEB drive converters Manufacturer The manufacturer is KEB, unless
COMBIVIS KEB start-up and parameterizing otherwise specified (e.g. as ma-
software nufacturer of machines, engines,
Customer The customer has purchased a KEB vehicles or adhesives)
product from KEB and integrates the MCM American unit for large wire cross
KEB product into his product (cus- sections
tomer product) or resells the KEB Modulation Means in drive technology that the
product (dealer) power semiconductors are controlled
DC DC current or voltage MTTF Mean service life to failure
DI Demineralized water, also referred to NN Sea level
as deionized (DI) water OC Overcurrent
DIN German Institut for standardization OH Overheat
DS 402 CiA DS 402 - CAN device profile for OL Overload
drives OSSD Output signal swithching device; - an
EMC Electromagnetic compatibility output signal that is checked in regu-
Emergency Shutdown of a drive in emergency lar intervals on its shutdown. (safety
stop case (not de-energized) technology)
Emergency Switching off the voltage supply in PDS Power drive system incl. motor and
switching off emergency case measuring probe
EMS Energy Management System PE Protective earth
EN European standard PELV Protective Extra Low Voltage
Encoder emu- Software-generated encoder output PFD Term used in the safety technology
lation (EN 61508-1...7) for the size of error
End customer The end customer is the user of the probability
customer product
10
Glossary
PFH Term used in the safety technology

(EN 61508-1...7) for the size of error
probability per hour
PLC Programmable logic controller
PT100 Temperature sensor with R0=100Ω
PT1000 Temperature sensor with R0=1000Ω
PTC PTC-resistor for temperature detec-
tion
PWM Pulse width modulation
RJ45 Modular connector with 8 lines
SCL Synchronous sensorless closed loop
SELV Safety Extra Low Voltage (< 60 V)
SIL The security integrity level is a
measure for quantifying the risk
reduction. Term used in the safety
technology (EN 61508 -1...7)
SS1 Safety function „Safe stop 1“ in ac-
cordance with IEC 61800-5-2
SSI Synchronous serial interface for
encoder
STO Safety function „Safe Torque Off“ in
accordance with IEC 61800-5-2
TTL Incremental signal with an output
voltage up to 5 V
USB Universal serial bus
VARAN Real-time Ethernet bus system
11
Standards for drive converters / control cabinets

Product standards that apply directly to the drive converter
EN 61800-2 Adjustable speed electrical power drive systems - Part 2: General requirements -
Rating specifications for low voltage adjustable frequency a.c. power drive
systems (VDE 0160-102, IEC 61800-2)
EN 61800-3 Speed-adjustable electrical drives. Part 3: EMC requirements and specific test
methods (VDE 0160-103, IEC 61800-3)
EN 61800-5-1 Adjustable speed electrical power drive systems - Part 5-1: Safety requirements
- Electrical, thermal and energy (IEC 61800-5-1); German version EN 61800-5-1
EN 61800-5-2 Adjustable speed electrical power drive systems - Part 5-2: Safety Requirements
- Functional (IEC 22G/264/CD)
UL 61800-5-1 American version of the EN 61800-5-1 with „National Deviations“
Basic standards to which drive converter standards refer directly

EN 55011 Industrial, scientific and medical equipment - Radio frequency disturbance
characteristics - Limits and methods of measurement (CISPR 11); German
version EN 55011
EN 55021 Interference to mobile radiocommunications in the presence of impulse noise -
Methods of judging degradation and measures to improve performance (IEC/
CISPR/D/230/FDIS); German version prEN 55021
EN 60529 Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 60664-1 Insulation coordination for equipment within low-voltage systems Part 1: Princi-
ples, requirements and tests (IEC 60664-1)
EN 60721-3-1 Classification of environmental conditions - Part 3-1: Classification of groups of
environmental parameters and their severities - Section 1: Storage (IEC 60721-
3-1); German version EN 60721-3-1
EN 60721-3-2 Classification of environmental conditions - Part 3: Classification of groups of
environmental parameters and their severities - Section 2: Transportation and
handling (IEC 104/670/CD)
EN 60721-3-3 Classification of environmental conditions - Part 3: Classification of groups of
environmental parameters and their severities; section 3: Stationary use at
weatherprotected locations; Amendment A2 (IEC 60721-3-3); German version
EN 60721-3-3
EN 61000-2-1 Electromagnetic compatibility (EMC) - Part 2: Environment - Section 1: Descrip-
tion of the environment - Electromagnetic environment for low-frequency
conducted disturbances and signalling in public power supply systems
EN 61000-2-4 Electromagnetic compatibility (EMC) - Part 2-4: Environment; Compatibility
levels in industrial plants for low-frequency conducted disturbances (IEC 61000-
2-4); German version EN 61000-2-4
EN 61000-4-2 Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity test (IEC 61000-4-2); German
version EN 61000-4-2
techniques - Radiated, radio-frequency, electromagnetic field immunity test (IEC
61000-4-3); German version EN 61000-4-3
techniques - Electrical fast transient/burst immunity test (IEC 61000-4-4);
German version EN 61000-4-4
12

techniques - Surge immunity test (IEC 61000-4-5); German version EN 61000-4-5
techniques - Immunity to conducted disturbances, induced by radio-frequency
fields (IEC 61000-4-6); German version EN 61000-4-6
techniques - Voltage dips, short interruptions and voltage variations immunity
tests for equipment with mains current more than 16 A per phase (IEC 61000-4-
34); German version EN 61000-4-34
EN 61508-1...7 Functional safety of electrical/electronic/programmable electronic safety-related
systems – Part 1...7 (VDE 0803-1…7, IEC 61508-1…7)
EN 62061 Safety of machinery - functional safety of electrical, electronic and program-
mable electronic safety-related systems (VDE 0113-50, IEC 62061)
EN ISO 13849-1 Safety of machinery - safety-related parts of control systems - Part 1: General
principles for design (ISO 13849-1); German version EN ISO 13849-1
Standards that are used in the environment of the drive converter

DGUV regulation 3 Electrical installations and equipment
DIN 46228-1 Wire-end ferrules; Tube without plastic sleeve
DIN 46228-4 Wire-end ferrules; Tube with plastic sleeve
DIN IEC 60364-5-54 Low-voltage electrical installations - Part 5-54: Selection and erection of
electrical equipment - Earthing arrangements, protective conductors and protec-
tive bonding conductors (IEC 64/1610/CD)
DIN VDE 0100-729 Low-voltage electrical installations - Part 7-729: Requirements for special
installations or locations - Operating or maintenance gangways (IEC 60364-7-
729:2007, modified); German implementation HD 60364-7-729:2009
DNVGL-CG-0339 Environmental test specification for electrical, electronic and programmable
equipment and systems
EN 1037 Safety of machinery - Prevention of unexpected start-up; German version EN 1037
EN 12502-1...5 Protection of metallic materials against corrosion - Part 1...5
EN 60204-1 Safety of machinery - electrical equipment of machines Part 1: General require-
ments (VDE 0113-1, IEC 44/709/CDV)
EN 60439-1 Low-voltage switchgear and controlgear assemblies - Part 1: Type-tested and
partially type-tested assemblies (IEC 60439-1); German version EN 60439-1
EN 60947-7-1 Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment -
Terminal blocks for copper conductors (IEC 60947-7-1:2009); German version
EN 60947-7-1:2009
EN 60947-8 Low-voltage switchgear and controlgear - Part 8: Control units for built-in
thermal protection (PTC) for rotating electrical machines (IEC 60947-8:2003 +
A1:2006 + A2:2011)
EN 61373 Railway applications - Rolling stock equipment - Shock and vibration tests (IEC
61373); German version EN 61373
EN 61439-1 Low-voltage switchgear and controlgear assemblies - Part 1: General rules (IEC
121B/40/CDV); German version FprEN 61439-1
VGB R 455 P Water treatment and use of materials in cooling systems
ISO 4017 Fasteners - Hexagon head screws - Product grades A and B
ISO 4762 Hexagon socket head cap screws
ISO 7090 Plain washers, chamfered - Normal series - Product grade A
ISO 7092 Plain washers - Small series - Product grade A
ISO 7045 Pan head screws with type H or type Z cross recess - Product grade A
13
Basic Safety Instructions
1 Basic Safety Instructions

The COMBIVERT is designed and constructed in accordance with state-of-the-art tech-
nology and the recognised safety rules and regulations However, the use of such de-
vices may cause functional hazards for life and limb of the user or third parties, or dama-
ges to the system and other material property.
The following safety instructions have been created by the manufacturer for the area of
electric drive technology. They can be supplemented by local, country- or application-
specific safety instructions. This list is not exhaustive. Non-observance of the safety
instructions by the customer, user or other third party leads to the loss of all resulting
claims against the manufacturer.
NOTICE Hazards and risks through ignorance.
► Read the instructions for use !
► Observe the safety and warning instructions !
► If anything is unclear, please contact KEB Automation KG !
1.1 Target group

This instruction manual is determined exclusively for electrical personnel. Electrical per-
sonnel for the purpose of this instruction manual must have the following qualifications:
• Knowledge and understanding of the safety instructions.
• Skills for installation and assembly.
• Start-up and operation of the product.
• Understanding of the function in the used machine.
• Detection of hazards and risks of the electrical drive technology.
• Knowledge of DIN IEC 60364-5-54.
• Knowledge of national safety regulations.
1.2 Transport, storage and proper use

The transport is carried out by qualified persons in accordance with the environmental
conditions specified in this manual. Drive converter shall be protected against excessive
strains.
Transport of drive converters with an edge length >75 cm

The transport by forklift without suitable tools can cause a deflection of the heat
sink. This leads to premature aging or destruction of internal components.
► Transport of drive converters on suitable pallets.
► Do not stack drive converters or burden them with other heavy objects.
14
Drive converters contain electrostatic sensitive components.

► Avoid contact.
ESD ► Wear ESD-protective clothing.
Do not store drive converters

• in the environment of aggressive and/or conductive liquids or gases.
• with direct sunlight.
• outside the specified environmental conditions.
1.3 Installation
DANGER Do not operate in an explosive environment!
► The COMBIVERT is not intended for the use in potentially explosive

environment.
EX
CAUTION Maximum design edges and high weight!
Contusions and bruises!

► Never stand under suspended loads.
► Wear safety shoes.
► Secure drive converter accordingly when using lifting gear.
• To prevent damages to the device:

• Make sure that no components are bent and/or isolation distances are changed.
• The device must not be put into operation in case of mechanical defects. Non-
compliance with the applicable standards.
• Do not allow moisture or mist to penetrate the unit.
• Avoid dust permeating the device. Allow for sufficient heat dissipation if installed in
a dust-proof housing.
• Note installation position and minimum distances to surrounding elements. Do not
cover the ventilation openings.
• Mount the drive inverter according to the specified degree of protection.
• Make sure that no small parts fall into the COMBIVERT during assembly and wiring
(drilling chips, screws etc.). This also applies to mechanical components, which can
lose small parts during operation.
• Check the reliable fit of the device connections in order to avoid contact resistances
and sparking.
• Do not walk-on drive converter.
• The safety instructions are to be kept!
15
1.4 Electrical connection
DANGER Voltage at the terminals and in the device !
Danger to life due to electric shock !

► Never work on the open device or never touch exposed parts.
► For any work on the unit switch off the supply voltage, secure it
against switching on and check absence of voltage by measure-
ment.
► Wait until all drives has been stopped in order that no regenerative
energy can be generated.
► Await capacitor discharge time (5 minutes) if necessary, measure

DC voltage at the terminals.
► If personal protection is required, install suitable protective devices

for drive converters.
► Never bridge upstream protective devices (also not for test pur-
poses).
► Connect the protective earth conductor always to drive converter

and motor.
► Install all required covers and protective devices for operation.
► The control cabinet shall be kept closed during operation.
► Residual current: This product may cause a dc current in the pro-

tective earth conductor. When a residual current protective device
(RCD) or a residual current monitoring device (RCM) is used for the
protection against direct or indirect contact, only a RCD or RCM type
B is permitted on the power supply side of this product.
► Drive converters with a leakage current > 3.5 mA AC current (10 mA

DC current) are intended for a stationary connection. Protective
earth conductors must be designed in accordance with the local
regulations for equipment with high leakage currents according to
EN 61800-5-1, EN 60204-1 or DIN IEC 60364-5-54 .
If personnel protection is required during installation of the

system, suitable protective devices must be used for drive
converters.
www.keb.de/fileadmin/media/Manuals/knowledge/04_techinfo/00_gene-
ral/ti_rcd_0400_0002_gbr.pdf
Installations which include drive converter shall be equipped with additional control and
protective devices in accordance with the relevant applicable safety requirements, e.g.
act respecting technical equipment, accident prevention rules etc. They must always be
complied with, also for drive converter bearing a CE marking.
16
For a trouble-free and safe operation, please pay attention to the following instructions:
• The electrical installation shall be carried out in accordance with the relevant re-
quirements.
• Cable cross-sections and fuses must be dimensioned by the user according to the
specified minimum/maximum values for the application.
• The wiring must be made with flexible copper cable for a temperature > 75°C.
• Connection of the drive converter is only permissible on symmetrical networks with
a maximum line voltage (L1, L2, L3) with respect to earth (N/PE) of max. 300 V. An
isolating transformer must be used for supply networks which exceed this value ! In
case of non-compliance the control is not longer considered to be a PELV circuit.
• With existing or newly wired circuits the person installing the units or machines must
ensure that the PELV requirements are met.
• For drive converters that are not isolated from the supply circuit (in accordance with
EN 60721-3-2) all control lines must be included in other protective measures (e.g.
double insulation or shielded, earthed and insulated).
• When using components without isolated inputs/outputs, it is necessary that equi-
potential bonding exists between the components to be connected (e.g. by the equi-
potential line). Disregard can cause destruction of the components by equalizing
currents.
1.4.1 EMC-compatible installation
Observance of the limit values required by EMC law is the responsibility of the customer.
Notes on EMC-compatible installation can be found here.

www.keb.de/fileadmin/media/Manuals/emv/0000neb0000.pdf
1.4.2 Voltage test
Testing with AC voltage (in accordance with EN 60204-1 chapter 18.4) may not be exe-
cuted, since there is danger for the power semiconductors in the drive inverter.
Due to the radio interference suppression capacitors, the test generator will
switch off immediately with a current fault.
According to EN 60204-1 it is permissible to disconnect already tested com-

ponents. Drive converters of the KEB Automation KG are delivered ex works
voltage tested to 100% according to product standard.
1.4.3 Insulation measurement
An insulation measurement (in accordance with EN 60204-1 chapter 18.3) with DC

500 V is permissible, if all power unit connections (grid-connected potential) and all con-
trol connections are bridged with PE. The insulation resistance of the respective device
can be found in the technical data.
17
1.5 Start-up and operation

The drive converter must not be started until it is determined that the installation com-
plies with the machine directive; Account is to be taken of EN 60204-1.
WARNING Software protection and programming !
Hazards caused by unintentional behavior of the drive!

► Check especially during initial start-up or replacement of the drive
converter if parameterization is compatible to application.
► Securing a unit solely with software-supported functions is not suf-

ficient. It is imperative to install external protective measures (e.g.
limit switch) that are independent of the drive converter.
► Secure motors against automatic restart.
CAUTION High temperatures at heat sink and coolant!
Burning of the skin!

► Cover hot surfaces safe-to-touch.
► If necessary, attach warning signs on the system.
► Before touching, check the surface and coolant lines.
► Before working let the unit cool down.
• During operation, all covers and doors shall be kept closed.

• Use only approved accessories for this device.
• Never touch terminals, busbars or cable ends.
If a drive converter with electrolytic capacitors in a DC link

(see technical data) has not been in operation for more than
one year, observe the following instructions.
www.keb.de/fileadmin/media/Manuals/knowledge/04_techinfo/00_gene-
ral/ti_format_capacitors_0400_0001_gbr.pdf
NOTICE Continuous operation (S1) with load > 60 % !
Premature ageing of the electrolytic capacitors !

► Insert mains choke with Uk = 4%.
► From a rated motor power of 55 kW, a mains choke with Uk = 4%

must be used !
18
Switching at the output

Switching between motor and drive converter is prohibited for single drives during ope-
ration as this may trigger the protection gear of the device. Function ‚speed search‘ must
be activated if switching can not be avoided. Speed search may only be triggered after
closing the motor contactor (e.g. by switching the control release).
Connecting and disconnecting is permissible with multiple motor drives if at least 1 mo-
tor is running during the switch-over process. The drive converter must be dimensioned
to the occurring starting currents.
The ‚speed search‘ function must be activated if the motor is still running during a restart
of the drive converter (mains on) (e.g. due to large rotating masses).
Switching an the input

For applications that require cyclic switching off and on of the drive converter, maintain
an off-time of at least 5 min after the last switch on. If you require shorter cycle times
please contact KEB Automation KG.
Short-circuit resistance
The drive converters are conditional short-circuit proof. After resetting the internal pro-
tection devices, the function as directed is guaranteed.
Exceptions:
• If an earth-leakage fault or short-circuit often occurs at the output, this can lead to a
defect in the unit.
• If a short-circuit occurs during regenerative operation (2nd or 4th quadrant, regen-
eration into the DC link), this can lead to a defect in the unit.
1.6 Maintenance
The following maintenance work has to be carried out when required, but at least once
per year by authorized and trained personnel.Check unit for loose screws and plugs and
tighten if necessary.
► Check system for loose screws and plugs and tighten if necessary.
► Clean drive converter from dirt and dust deposits. Pay attention especially to coo-
ling fins and protective grid of the fans.
► Examine and clean extracted air filter and cooling air filter of the control cabinet.
► Check the function of the fans of the drive converter. The fan must be replaced in
case of audible vibrations or squeak.
► In the case of liquid-cooled drive converters a visual test of the cooling circuit for
leaks and corrosion must be carried out.The cooling circuit must be completely
empty if a unit shall be switched off for a longer period. The cooling circuit must be
blown out additionally with compressed air at temperatures below 0°C.
19
1.7 Repair
In case of malfunction, unusual noises or smells inform a person in charge!
DANGER Unauthorized exchange, repair and modifications!
Unpredictable malfunctions!
► The function of the drive converter is dependent on its parameteri-
zation. Never replace without knowledge of the application.
► Modification or repair is permitted only by KEB Automation KG au-

thorized personnel.
► Only use original manufacturer parts.
► Infringement will annul the liability for resulting consequences.
In case of failure, please contact the machine manufacturer. Only the machine manu-
facturer knows the parameterisation of the used drive converter and can provide an
appropriate replacement or induce the maintenance.
1.8 Disposal
Electronic devices of the KEB Automation KG are exclusively professional devices for
further industrial processing (so-called B2B devices).
Manufacturers of B2B devices are obliged to take back and recycle devices manufac-
tured after 14.08.2018. These devices may not be disposed at the collection centres of
public sector disposal organisations.
If no deviating agreement has been made between the customer and

KEB or no deviating mandatory legal regulation exists, KEB products
marked in this way can be returned. Company and keyword to the return
point can be taken from the list below. Shipping costs are paid by the
customer. Thereupon the devices will be professionally recycled and
disposed.
The entry numbers are listed country-specific in the following table. The corresponding
KEB return addresses can be found on our website.
Withdrawal by WEEE-Reg.-No. Keyword
Austria
KEB Automation GmbH ERA: 51976 Stichwort „Rücknahme WEEE“
France
RÉCYLUM - Recycle point ADEME: FR021806 Mots clés „KEB DEEE“
Germany
KEB Automation KG EAR: DE12653519 Stichwort „Rücknahme WEEE“
Italy
COBAT AEE: (IT) 19030000011216 Parola chiave „Ritiro RAEE“
The packaging must be feed to paper and cardboard recycling.
20
Product Description
2 Product Description
The unit series COMBIVERT G6 concerns to drive converters, which have been devel-
oped for the universal use at open-loop three-phase drives. The COMBIVERT is opti-
mized for the operation at synchronous and asynchronous motors and equipped with an
integrated EMC filter.
The COMBIVERT meets the requirements of the Low-Voltage Directive. The harmo-
nized standards of the series EN 61800-5-1 for drive converters were used.
The COMBIVERT is a product of limited availability in accordance with EN 61800-3. This
product may cause radio interference in residential areas. In this case the operator may
need to take corresponding measures.
The machine directive, EMC directive, Low Voltage Directive and other guidelines and
regulations must be observed depending on the version.
2.1 Specified application

The COMBIVERT serves exclusively for the control and regulation of three-phase mo-
tors. It is intended for the installation into electrical systems or machines.
Technical data and information for connection conditions shall be taken from the type
plate and from the instruction manual and must be strictly observed.
The used semiconductors and components of the KEB Automation KG are developed
and dimensioned for the use in industrial products.
Restriction
If the product is used in machines, which work under exceptional conditions or if essen-
tial functions, life-supporting measures or an extraordinary safety step must be fulfilled,
the necessary reliability and security must be ensured by the machine builder.
2.1.1 Residual risks
Despite intended use, the drive converter can reach unexpected operating conditions in
case of error, with wrong parameterization, by faulty connection or unprofessional inter-
ventions and repairs. This can be:
• Wrong direction of rotation
• Motor speed too high
• Motor is running into limitation
• Motor can be under voltage even in standstill
• Automatic start
2.2 Unintended use

The operation of other electric consumers is prohibited and can lead to the destruction of
the unit. The operation of our products outside the indicated limit values of the technical
data leads to the loss of any liability claims.
21
Product Description
2.3 Product features

This instruction manual describes the power circuits of the following devices:
Unit type: Drive converter
Series: COMBIVERT G6
Power range: 0.75...1.5 kW / 230 V
0.75...2.2 kW / 400 V
Housing: A
The COMBIVERT G6 is characterized by the following features:

• Operation of three-phase asynchronous motors and three-phase synchronous
motors, in operating modes open-loop or closed-loop without speed feedback
• Following fieldbus systems are supported: EtherCAT, VARAN, IO-Link or CAN-
Open
• Comprehensive operating concept
• Wide operating temperature range
• Low switching losses by IGBT power unit
• Low noise development due to high switching frequencies
• Different heat sink concepts:
• Air cooler as built-in version
• Flat rear version
• Temperature-controlled fans, replaceable
• Depending on the operating mode, the torque limits and s-curves are adjustable
(to protect the gearbox)
• General protection functions of the COMBIVERT series against overcurrent, over-
voltage, ground fault and overtemperature
• Analog inputs and outputs, digital inputs and outputs, brake control and supply,
motor protection by I²t, KTY or PTC input, diagnostic interface, fieldbus interface
(depending on the control board)
• Potential-free relay output
22
Product Description
2.4 Part code

x x G6 x x x - x x x x
0: Air-cooling
Heat sink version 4)
1: Flat rear
A: G6L-G controlled without keyboard / display

B: G6L-G controlled with keyboard / display
0: G6-G controlled without keyboard / display
Control,
1: G6-G controlled with keyboard / display
Keyboard,
2: G6P-S SCL5) regulated without keyboard / display
Display 4)
3: G6P-S SCL5) regulated with keyboard / display
4: G6L-M ASCL6) regulated without keyboard / display
5: G6L-M ASCL6) regulated with keyboard / display
Switching frequency; 5: 4 kHz / 150% / 180%

Short time current limit; 9: 4 kHz / 180% / 216%
Overcurrent cut-off 4) A: 8 kHz / 180% / 216%
0: 1ph 230 V AC/DC

3: 3ph 400 V AC/DC
Voltage /
5: 3ph 400 V DC
Connection type 4)
Customer- / special version (firmware, hardware,
A-Z:
download)
Housing A, B, C, E
Without filter, without braking transistor, without

0: safety
function STO
Without filter, with braking transistor, without safety
1:
function STO
Internal filter, with braking transistor, without safety
3:
Equipment function STO
Like A with
A: Like 0 with STO H:
f=0 Hz
Like B with
B: Like 1 with STO I:
f=0 Hz
Like D with
D: Like 3 with STO L:
f=0 Hz
C: Analog / digital (standard)

D: CAN® 2)
Control type E: IO-Link® 3)
F: EtherCAT® 1)
I: VARAN
continued on the next page
23
Product Description
x x G6 x x x - x x x x
Series COMBIVERT G6
Inverter size 07…19

Table 1: Part code
The part code may not be used as order code, but only for identification !
1)
EtherCAT® is registered trademark and patented technology, licensed
by Beckhoff Automation GmbH, Germany
2)
CANopen® is registered trademark of CAN in AUTOMATION - Interna-
tional Users and Manufacturers Group e.V.
3)
IO-LINK® is registered trademark of PROFIBUS user organisation e.V.
4)
Not valid for customer / special versions
5)
SCL = Sensorless Closed Loop
6)
ASCL = Asynchronous Sensorless Closed Loop
24
Operating conditions
3 Technical Data
Unless otherwise indicated, all electrical data in the following chapter refer to a 3-phase
AC voltage supply.
3.1 Operating conditions
3.1.1 Climatic ambient conditions
Storage Standard Class Notes

Surrounding temperature EN 60721-3-1 1K4 -25…55 °C
Relative humidity EN 60721-3-1 1K3 5…95 % (without condensation)
Storage height – – Max. 3000 m above sea level
Transport Standard Class Notes
Surrounding temperature EN 60721-3-2 2K3 -25…70 °C
Relative humidity EN 60721-3-2 2K3 95 % at 40 °C (without condensation)
Operation Standard Class Notes
Surrounding temperature EN 60721-3-3 3K3 5…40 °C (extended to -10…45 °C)
Coolant inlet Air – – 5…40 °C (-10…45 °C)
temperature Liquid – – 5…40 °C
Relative humidity EN 60721-3-3 3K3 5…85 % (without condensation)
Protection against foreign material > ø12.5 mm
Version and degree of No protection against water
EN 60529 IP20
protection Non-conductive pollution, occasional conden-
sation when PDS is out of service.
Max. 2000 m above sea level
• With site altitudes over 1000 m a derating
of 1 % per 100 m must be taken into con-
sideration.
Site altitude – –
• With site altitudes over 2000 m, the control
board to the mains has only basic isola-
tion. Additional measures must be carried
out when wiring the control system.
Table 2: Climatic ambient conditions
25
3.1.2 Mechanical ambient conditions

Vibration amplitude 1.5 mm (2…9 Hz)
Vibration limits EN 60721-3-1 1M2
Acceleration amplitude 5 m/s² (9…200 Hz)
Shock limit values EN 60721-3-1 1M2 40 m/s²; 22 ms
Vibration limits EN 60721-3-2 2M1 Acceleration amplitude 10 m/s² (9…200 Hz)
(Acceleration amplitude 15 m/s² (200…500 Hz))*
EN 60721-3-3 3M4
Vibration limits
EN 61800-5-1 –
Table 3: Mechanical ambient conditions
*Not tested
3.1.3 Chemical / mechanical active substances

Gases 1C2 –
Contamination EN 60721-3-1
Solids 1S2 –
Gases 2C2 –
Solids 2S2 –
Gases 3C2 –
Solids 3S2 –
Table 4: Chemical / mechanical active substances
26
3.1.4 Electrical operating conditions
3.1.4.1 Device classification
Requirement Standard Class Notes

EN 61800-5-1 –
Overvoltage category III
EN 60664-1 –
Non-conductive pollution, occasional conden-
Pollution degree EN 60664-1 2
sation when PDS is out of service
Table 5: Device classification
3.1.4.2 Electromagnetic compatibility
For devices without an internal filter, an external filter is required to comply with the
following limit values.
EMC emitted interference Standard Class Notes

Cable-based interferences EN 61800-3 C2 –
Radiated interferences EN 61800-3 C2 –
Interference immunity Standard Level Notes
8 kV AD (air discharge)
Static discharges EN 61000-4-2
4 kV CD (contact discharge)
Burst - Ports for process
measurement control lines EN 61000-4-4 2 kV –
and signal interfaces
Burst - Power ports EN 61000-4-4 4 kV –
1 kV Phase-phase
Surge - Power ports EN 61000-4-5
2 kV Phase-ground
Immunity to conducted distur-
bances, induced by radio-fre- EN 61000-4-6 10 V 0.15...80 MHz
quency fields
10 V/m 80 MHz...1 GHz
Electromagnetic fields EN 61000-4-3 3 V/m 1.4...2 GHz
1 V/m 2...2.7 GHz
Voltage variation/ EN 61000-2-1 -15 %...+10 %
–
voltage drops EN 61000-4-34 90 %
Frequency changes EN 61000-2-4 – ≤ 2%
Voltage deviations EN 61000-2-4 – ±10 %
Voltage unbalance EN 61000-2-4 – ≤ 3%
Table 6: Electromagnetic compatibility
27
Technical data G6 230V class
3.2 Technical data G6 230V class

Unit size 07 09
Housing A
Phases 1
Rated apparent output power Sout / kVA 1.6 2.8
Max. rated motor power Pmot / kW 0.75 1.5
Rated output current IN / A 4.0 7.0
Rated output current UL IN_UL / A 4.1 6.8
Short time current limit 1)
IHSR / % 180
Overcurrent 1)
IOC / % 216
Maximum current at 0Hz / corner frequency fd at fS = 4 kHz 1)
If0/Ifd / % 100 / 180 100 / 180
If0/Ifd / % 100 / 180 100 / 150
Corner frequency fd / Hz 6
Rated input current Iin / A 8 14
Rated input current UL Iin_UL / A 8 14
Max. permissible main fuse type gG I_max / A 20 20
Rated switching frequency 2)
fSN / kHz 8 4
Max. switching frequency 2)
fS_max / kHz 8 8
Power dissipation at nominal operating 3)
PD / W 45 63
Power dissipation standby (no control release) 3)
PD_nop / W 8
Max. heat sink temperature THS / °C 90
Temperature for derating the switching frequency 4)
Tdr / °C 85
Temperature for uprating the switching frequency 4)
Tur / °C 80
Min. braking resistor RB_min / Ω 56
Max. braking current IB_max / A 7.5
Rated input voltage UN / V 230 (UL: 240)
Input voltage range Uin / V 195…264 ±0
Mains frequency fN / Hz 50 / 60 ±2
Rated input voltage DC UN_dc / V 325 (UL: 340)
Input voltage range at DC supply Uin_dc / V 275…373 ±0
DC switch-off level „Error! Underpotential“ UUP_dc / V 216
Switching level DC braking resistor UB_dc / V 380
DC switch-off level „Error! Overpotential“ UOP_dc / V 400
Output voltage 5)
Uout / V 3 x 0…Uin
Output voltage at DC devices 5)
Uout_dc / V 3 x 0…Uin_dc / √2
0…400 (fs = 4 kHz)
Output frequency (depending on the operating mode) 2)
fout / Hz
0…599 (fs = 8 kHz)
Insulation resistance @ Udc = 500 V Riso / MΩ 10
Minimum waiting period between two switch-on procedures t / min 5
Table 7: Technical data 230V class
1) The values refer percentage to the rated output current IN.
2) The output frequency is to be limited in such a way that it does not exceed 1/10 of the switching frequency.
3) Rated operation corresponds to UN = 230 V; fSN; fout = 50 Hz (typically value).
4) On reaching the temperature Tdr the switching frequency is step down. The switching frequency is increased again on cooling down
to temperature Tur.
5) The voltage at the motor is dependent on the series-connected units and on the control method, => „Calculation of the motor voltage“.
The technical data are for 2/4-pole standard motors. With other pole numbers
the drive converter must be dimensioned onto the rated motor current. Contact
KEB for special or medium frequency motors.
28
3.3 Technical data G6 400V class

Unit size 07 09 10
Housing A
Phases 3
Rated apparent output power Sout / kVA 1.8 2.8 4.0
Max. rated motor power Pmot / kW 0.75 1.5 2.2
Rated output current IN / A 2.6 4.1 5.8
Rated output current UL IN_UL / A 1.8 3.4 4.8
Short time current limit 1)
IHSR / % 180
Overcurrent 1)
IOC / % 216
If0/Ifd / % 100 / 180 100 / 180 100 / 180
If0/Ifd / % 100 / 180 100 / 150 85 / 150
Corner frequency fd / Hz 6
Rated input current Iin / A 3.6 6.0 8.0
Rated input current UL Iin_UL / A 2.5 4.8 7.0
Rated input current DC 2)
Iin_dc / A 1.9 3.7 5.2
Rated input current UL DC 2)
Iin_UL_dc / A 1.6 3.0 4.2
Max. permissible main fuse type gG I_max / A 16 16 16
Rated switching frequency 3)
fSN / kHz 8 4 4
Max. switching frequency 3)
fS_max / kHz 8 8 8
Power dissipation at nominal operating 4)
PD / W 45 49 70
Power dissipation standby (no control release) 4)
PD_nop / W 10
Max. heat sink temperature THS / °C 90
Temperature for derating the switching frequency 5)
Tdr / °C 85
Temperature for uprating the switching frequency 5)
Tur / °C 80
Min. braking resistor RB_min / Ω 120
Max. braking current IB_max / A 7
Rated input voltage UN / V 400 (UL: 480)
Input voltage range Uin / V 340…528 ±0
Mains frequency fN / Hz 50 / 60 ±2
Rated input voltage DC UN_dc / V 565 (UL: 680)
Input voltage range at DC supply Uin_dc / V 480…746 ±0
DC switch-off level „Error! Underpotential“ UUP_dc / V 240
Switching level DC braking resistor UB_dc / V 780
DC switch-off level „Error! Overpotential“ UOP_dc / V 840
Output voltage 6)
Uout / V 3 x 0…Uin
Output voltage at DC devices 6)
Uout_dc / V 3 x 0…Uin_dc / √2
0…400 (fs = 4 kHz)
Output frequency (depending on the operating mode) 3)
fout / Hz
0…599 (fs = 8 kHz)
Insulation resistance @ Udc = 500 V Riso / MΩ 10
Minimum waiting period between two switch-on procedures t / min 5
Table 8: Technical data 400V class
1) The values refer percentage to the rated output current IN.
2) The values resulting
from rated operation with B6 rectifier circuit and mains choke 4% UK.
3) The output frequency is to be limited in such a way that it does not exceed 1/10 of the switching frequency.
4) Rated operation corresponds to UN = 400 V; fSN; fout = 50 Hz (typically value).
5) On reaching the temperature Tdr the switching frequency is step down. The switching frequency is increased again on cooling down
to temperature Tur.
6) The voltage at the motor is dependent on the series-connected units and on the control method, => „Calculation of the motor voltage“.
The technical data are for 2/4-pole standard motors. With other pole numbers
the drive converter must be dimensioned onto the rated motor current. Contact
KEB for special or medium frequency motors.
29
The service life of drive converters with voltage DC link depends on the current load
of the electrolytic capacitors in the DC link. The use of mains chokes can increase the
service life of the condensators to a considerable extent, especially when connecting to
„hard“ power systems or when under permanent drive load (continuous duty).
The term "hard" power system means that the nodal point power (Snet) of the mains is
very high (>> 200) compared to the output rated power of the drive converter (Sout).
Snet 2 MVA (supply transformer)

k= –––– >> 200 e.g. k = ––––––––––––––––––––– = 303 ––> Choke required
Sout 6.6 kVA (12G6)
3.3.1 Overload and derating
IN / %
220 IOC
200
IHSR IHSR
180
07G6 (8 kHz) & 09/10G6 (4 kHz) = IHSR
160
09G6 / 8 kHz
10G6 / 8 kHz
140
120
100 IN
80
fout / Hz
f0 (0 Hz) fd (6 Hz)
Legend
IN Rated current fout Output frequency
IOC Overcurrent f0 Standstill
IHSR Hardware current limitation fd Corner frequency
Figure 1: Maximum load and derating depending on the switching frequency
30
t/s
300
270
240
210
180
150
120
90
60
30
IN / %
0 105 110 115 120 125 130 135 140 145 150 160 170 180 190 200 210 220
Figure 2: Overload characteristic
On exceeding a load of 105% the overload integrator starts. When falling below the
integrator counts backwards. If the integrator achieves the overload characteristic that
corresponds to the drive converter, „ERROR overload“ is triggered
After a cooling period the message „no ERROR overload“ is displayed. The error can
be reset now. The drive converter must remain switched on during the cooling period.
31
Dimensions and weights
3.4 Dimensions and weights
200
M4
204
175
185
5
90
5
Housing A
Weight 1.3 kg
Dimensions All dimensions in mm
Figure 3: Dimensions and weights for G6 housing A
32
Dimensions and weights
3.4.1 Control cabinet installation
The power dissipation for the control cabinet dimension is to be taken from the technical
data.
Mounting distances Dimension Distance in mm Distance in inch

A 150 6
B 100 4
A E
C 30 1.2
D 0 0
D D C E 0 0
F 1)
50 2
F 1)
Distance to preceding elements in the control cab-
B inet door.
Figure 4: Mounting distances
3.4.1.1 Ventilation in the control cabinet
If construction-conditioned the control cabinet cannot be without indoor ventilation, ap-

propriate filters must avoid suction of foreign objects.
Installation of the drive converter

For reliable operation, the drive converter must be mounted without clearance
on a smooth, closed, bare metal mounting plate.
Direction of the air Front and side view of the coolant inlet
flow
Coolant outlet
Coolant inlet
Figure 5: Control cabinet ventilation
33
Overview of the COMBIVERT G6
4 Installation and Connection
4.1 Overview of the COMBIVERT G6
Housing A No. Name Description

Terminal strip for three-phase motor ,
1 X1B
braking resistor and DC supply
6 Temperature monitoring; Connection
2 X1C
for external PTC or temperature switch
Diagnostic interface;
3 X4A
5 RS232/485 interface with DIN66019-II
4 X2B Safety function STO (optional)
7 5 X2A Control terminal strip 32pole
4
6 X1A Mains input
Drive converter state
7 LED1
3 8 (there is no operator)
8 – Operator with display and keyboard
9 – Nameplate
Protective earth;
at connection to protective earth each
terminal may be assigned only once.
PE, The shielding e.g. from the motor cable
9 10 is laid on the mounting plate in the
2 control cabinet or on the mounting kit
1 (optionally available).
10 => „Mounting kit shield connection
braket“.
Figure 6: Overview of the COMBIVERT G6
34
Connection of the power unit
4.2 Connection of the power unit
4.2.1 Connection of the voltage supply
++ The COMBIVERT G6-A corresponds to the drive converter type A1.

This type can be supplied both by mains and via DC terminals. The
starting current limiting is arranged before the DC link. When using as
L1 (L1) DC output parallel-connected drive converters must have their own
L2 +
L3 (N)
starting current limiting at the DC voltage input.
--
Figure 7: Input circuit / drive converter type
NOTICE Unit switches off !
Cyclic switching on and off of the unit leads to temporary high resistance
of the resistor (PTC) in the input. The unit displays „Error! load shunt
fault“ in this state. When switching the control release during this fault,
the unit will switch off. A restart without limitation is possible after cooling.
Waiting time => „Technical data G6 400V class“.
4.2.1.1 Wiring instructions
NOTICE • Pay attention to the input voltage, 230 V and 400 V class are possible.
• Never exchange the mains and motor cables.
Some countries demand that the PE-terminal is directly connected to the termi-
nal box (not over the mounting plate).
35
4.2.1.2 Line terminal strip X1A
X1A Name Function Cross-section Tightening torque

AWG mm²
without with
Mains connec- wire-end wire-end
ferrule ferrule 0.5…0.6 A
L1, N tion
5…6 lb-inch
1-phase 24...14 0.2…2.5
multi-wire
AWG mm²
without with
Mains connec- wire-end wire-end
ferrule ferrule 0.5…0.6 A
L1, L2, L3 tion
5…6 lb-inch
3-phase 24...14 0.2…2.5
multi-wire
Connection for
Screw M4 1.3 Nm
protective
PE, for ring crimp connector 11 lb inch
earth
Figure 8: Line terminal strip X1A
36
4.2.2 AC connection
4.2.2.1 AC supply 230V / 1-phase
T1 T2 U
L1 L1 V
N N W
PE
Legend
Mains voltage 1-phase 230 V
1 Mains form TN, TT IT
Personal protection RCMA with separator or RCD type B Insulation monitor
2 Mains fuses Type gG or MCCB
3 Line contactor
4 Mains choke 07 or 09Z1B02-1000
5 KEB COMBIVERT G6
Figure 9: Connection of the mains supply 230 V / 1-phase
4.2.2.2 AC supply 400V / 3-phase
T1 T2
L1 L1 U
L2 L2 V
L3 L3 W
PE
Legend
Mains voltage 3-phase 400 V
1 Mains form TN, TT IT
Personal protection RCMA with separator or RCD type B Insulation monitor
2 Mains fuses Type gG or MCCB
3 Line contactor
4 Mains choke 07, 09 or 10Z1B04-1000
5 KEB COMBIVERT G6
Figure 10: Connection of the mains supply 400 V / 3-phase
37
4.2.2.3 Cross-section of the supply cable
The conductor cross-section of the supply cable is dependent on the input current, the
cable according to manufacturer's data, as well as the VDE regulations.
4.2.3 Connection at DC voltage supply
T1 T2
+U ++ U
V
-U --
W
PE
Legend
230V class: 275…373 V
1 DC voltage
400V-class: 480…746 V
Type aR
2 Fuses
Pay attention to the permissible voltage range !
3 KEB COMBIVERT G6
Figure 11: Connection at DC voltage supply
4.2.3.1 Terminal block X1B DC connection
X1B Name Function Cross-section Tightening torque

AWG mm²
without with
wire-end wire-end
DC 0.5…0.6 A
++, -- ferrule ferrule
connection 5…6 lb-inch
24...14 0.25…2.5
multi-wire
Connection
PE, for Screw M4 1.3 Nm
protective for ring crimp connector 11 lb inch
earth
Figure 12: Terminal block X1B DC connection
4.2.4 Connection of the motor
4.2.4.1 Selection of the motor cable
The correct cabling as well as the motor cable play an important part in case of low power in
connection with long motor line lengths. Ferrite cores and low-capacitance cables (phase/
phase < 65 pF / m, phase/screen < 120 pF / m) at the output have the following effects:

• Longer motor line lengths

• Less abrasion of the motor gearbox by leakage currents
• Better EMC properties
38
4.2.4.2 Cable-feed disturbances depending on the motor line length at AC supply
The maximum motor line length is depending on the capacity of the motor cable as well
as on the EMC emitted interference. The following data apply for operation under nom-
inal rating conditions.
Max. motor line length shielded
in accordance with EN 61800-3 max. leakage
Category C1 Category C2 current
(at fN=50-60 Hz)
Motor cable Motor cable (low Motor cable Motor cable (low
Size (standard) capacitance) (standard) capacitance)
07
09 25 m 50 m 50 m 100 m < 5 mA
10
The line length can be extend significant by using motor chokes or filters. KEB
recommends the use of motor chokes or filters for a line length upto 50 m. Mo-
tor chokes or filters are absolutely necessary upto 100 m.
4.2.4.3 Motor line length at operation with DC voltage
The maximum motor line length at DC operation is basically dependent on the capacity
of the motor cable. The internal filter is not active at DC operation. External measures
must be taken here, if necessary. The following data apply for operation under nominal
rating conditions.
Size Motor cable (standard) Motor cable (low capacitance)
07
09 25 m 50 m
10
4.2.4.4 Motor cable length for parallel operation of motors
The resulting motor cable length for parallel operation of motors, or parallel installation
with multiple cables arises from the following formula:
resulting motor cable length = ∑single line length x √Number of motor lines
4.2.4.5 Motor cable cross-section
The conductor cross-section of the motor cable is dependent on the output current, the
cable according to manufacturer's data, as well as the VDE regulations.
4.2.4.6 Interconnection of the motor
NOTICE The connecting-up instructions of the motor manufacturer are always

generally valid.
39
NOTICE Protect motor against voltage peaks !
Drive converters switch at the output with dV/dt ≤ 5kV/µs. Voltage peaks
that endanger the insulation system at the motor can occur especially
in case of long motor cables (> 15 m).
A motor choke, a dv/dt-filter or sine-wave filter can be used for protec-
tion of the motor.
4.2.4.7 Terminal block X1B motor connection

AWG mm²
without with
wire-end wire-end
Motor connec- 0.5…0.6 A
U, V, W ferrule ferrule
tion 5…6 lb-inch
24...14 0.25...2.5
multi-wire
Figure 13: Terminal block X1B motor connection
4.2.4.8 Wiring of the motor
1 KEB COMBIVERT
➃
Apply motor cable, shielding on both sides over a
2
large surface on the function earth
T1 T2 3 Three-phase motor
L1 U U
Temperature monitoring (optional)
L2 V V 4
=> „Connection of a temperature detection“
L3 W W
Connection via shield plate (if not available, place on

5
mounting plate)
➄
Figure 14: Wiring of the motor
NOTICE • Do not lay PTC cable of the motor (also shielded) together with con-
trol cable !
• PTC cable inside the motor cable only permissible with an addition-
ally shielding (double shielding) !
40
4.2.5 Connection of a braking resistor
4.2.5.1 Terminal block X1B connection braking resistor

AWG mm²
without with
wire-end wire-end
Connection for 0.5…0.6 A
++, R ferrule ferrule
braking resistor 5…6 lb-inch
24...14 0.25...2.5
multi-wire
Figure 15: Terminal block X1B connection of a braking resistor
Terminal R can alternatively be labeled with PB.
4.2.5.2 Wiring of an intrinsically safe braking resistor
① X1B
R
--
++
② U
V
W
Figure 16: Wiring of an intrinsically safe braking resistor
NOTICE Only "intrinsically safe" braking resistors are permissible for this oper-
ation, since these resistors interrupt themselves at fault such as safety
fuse without fire risk.
Technical data and design for intrinsically safe braking re-

sistors.
www.keb.de/fileadmin/media/Manuals/dr/ma_dr_safe-braking-resis-
tors-20106652_en.pdf
41
4.2.6 Connection of a temperature detection
4.2.6.1 Temperature detection terminals T1, T2
The KEB COMBIVERT G6 is delivered with a PTC evaluation. The function corresponds
to EN 60947-8 and works in accordance with the following table:
Function of T1, T2 Resistance Display ru46 Error/warning

< 750 Ω T1-T2 closed –
0.75…1.65 kΩ
PTC or (reset resistance)
undefined
temperature switch 1.65…4 kΩ
(tripping resistance)
> 4 kΩ T1-T2 open ✓
Figure 17: Temperature detection terminals T1, T2
The behaviour of the drive converter in case of error/warning is defined with

parameter CP37 (Pn12). At factory setting the switching condition “9: dOH
warning” is set when terminals T1, T2 are open.
4.2.6.2 Terminal block X1C temperature detection
X1C Name Function Cross-section Tightening torque

AWG without mm² with
wire-end wire-end
Connection for ferrule ferrule
0.22...0.25 Nm
T1, T2 temperature
30...14 0.25...1.5 2 lb inch
sensor
multi-wire
Figure 18: Terminal block X1C temperature detection
42
Calculation of the motor voltage
4.2.6.3 Use of the temperature detection
The temperature detection provides the user all possibilities within the resistance
range specified in „Connection of a temperature detection“. This can be:
T1
Thermal contact (NC contact)
e.g. at the brake resistor
T2
①
T1
Temperature sensor (PTC)
e.g. at motor temperature detection
T2
①
T1
Mixed sensor chain
T2
①
Figure 19: Wiring examples of the temperature input
4.2.7 Final test information
Final test information of the machines/systems which are provided with drive converters
according to EN 60204-1 of 2007.
4.3 Calculation of the motor voltage

The motor voltage for dimensioning of the drive is depending on the used components.
The mains voltage reduces according to the following table:
Components % Example
Mains choke Uk 4
Drive converter
4
open-loop Closed loop drive converter with mains and motor
Drive converter choke at non-rigid supply system:
8
closed-loop 400 V mains voltage - 15 % = 340 V motor voltage
Motor choke Uk 1
Non-rigid supply system 2
Table 9: Calculation of the motor voltage
43
Certification
5 Certification
5.1 CE-Marking
CE marked drive converters are developed and manufactured to comply with the regula-
tions of the Low-Voltage Directive 2006/95/EC and EMC directive (2004/108/EC). The
harmonized standards of the series EN 61800-5-1 and EN 61800-3 were used.
5.2 Functional safety

Drive converters with functional safety are marked with the FS logo on the nameplate.
These units are designed and manufactured in accordance with the Machine Directive
(2006/42/EC). The harmonized standard of the series EN 61800-5-1 is used.
5.3 UL Marking
Acceptance according to UL is marked at KEB drive converters

with the adjacent logo on the nameplate.
To be conform according to UL for use on the North American and Canadian Market the
following additionally instructions must be observed (original text of the UL-File):
• “Only for use in WYE 480V/277V supply sources”
• Operator and Control Board Rating of relays (30Vdc.:1A)
• "Maximum Surrounding Air Temperature 45°C"
• “Internal Overload Protection Operates prior to reaching the 200% of the Motor Full
Load Current”.
• For 480V rated models:
"Suitable For Use On A Circuit Capable Of Delivering Not More Than 5000 rms Sym-
metrical Amperes, 480 Volts Maximum, see instruction manual for Branch Circuit
Protection details"
and
"Suitable For Use On A Circuit Capable Of Delivering Not More Than 18000 rms
Symmetrical Amperes, 480 Volts Maximum when protected by CC, J or RK5 Class
Fuses", see instruction manual for maximum fuse sizes".
• For 240V rated models:
„Suitable For Use On A Circuit Capable Of Delivering Not More Than 5000 rms Sym-
metrical Amperes, 240 Volts Maximum, see instruction manual for Branch Circuit
Protection details“
and
„Suitable For Use On A Circuit Capable Of Delivering Not More Than 18000 rms
Symmetrical Amperes, 240 Volts Maximum when protected by CC, J or RK5 Class
Fuses“, see instruction manual for maximum fuse sizes“.
• ”Integral solid state short circuit protection does not provide branch circuit protec-
tion. Branch circuit protection must be provided in accordance with the Manufacturer
Instructions, National Electrical Code and any additional local codes”.
continued on the next page
44
Certification
• Wiring terminals are marked to show a range of values or a nominal value of tighten-
ing torque in pound-inches to be applied to the clamping screws as shown below:
Input/Output terminals: 5…7 lb-in (0.56…0.79 Nm)
• Use in a Pollution Degree 2 environment.
• "Use 60/75°C Copper Conductors Only"
• “During the UL evaluation, only Risk of Electrical Shock and Risk of Fire aspects
were investigated. Functional Safety aspects were not evaluated”
• In order to comply with CSA C22.2 No. 14-2010 (cUL) following external Input
Chokes need to be installed: See table 1 below!
Table 1: Mains input chokes for CSA applications:
Cat. No. Housing Input Voltage [V] Reactor Cat. No. FLA Inductance [mH]
07G6 A 240 / 1ph 07DRF08-2951 10A 2.93
09G6 A 240 / 1ph 09DRF08-1851 16A 1.83
07G6 A 480 / 3ph 07DRB08-4951 3 x 6A 4.88
09G6 A 480 / 3ph 10DRB08-3751 3 x 8A 3.66
10G6 A 480 / 3ph 10DRB08-3751 3 x 8A 3.66
Branch Circuit Protection for G6 - A Drive series
I) Fuses:
Cat. No. Housing Input Voltage Class CC, J or RK5
[V] UL248 Fuse rating 600V [A]
07G6 A 240 / 1ph 15
09G6 A 240 / 1ph 20
07G6 A 480 / 3ph 6
09G6 A 480 / 3ph 10
10G6 A 480 / 3ph 10
The voltage rating of the external fuses shall be at least equal to the input voltage of the
drives.
WARNING – The opening of the branch circuit protective device may be an indication
that a fault current has been interrupted. To reduce the risk of fire or electrical shock,
current-carrying parts and other components of the controller should be examined and
replaced if damaged. If burnout of the current element of an overload relay occurs, the
complete overload relay must be replaced.
CSA: For Canada:

“ATTENTION - LE DÉCLENCHEMENT DU DISPOSITIF DE PROTECTION DU CIRCUIT
DE DÉRIVATION PEUT ÊTRE DÛ À UNE COUPURE QUI RÉSULTE D‘UN COURANT
DE DÉFAUT. POUR LIMITER LE RISQUE D‘INCENDIE OU DE CHOC ÉLECTRIQUE,
EXAMINER LES PIÈCES PORTEUSES DE COURANT ET LES AUTRES ÉLÉMENTS
DU CONTRÔLEUR ET LES REMPLACER S‘ILS SONT ENDOMMAGÉS. EN CAS DE
GRILLAGE DE L‘ÉLÉMENT TRAVERSÉ PAR LE COURANT DANS UN RELAIS DE
SURCHARGE, LE RELAIS TOUT ENTIER DOIT ÊTRE REMPLACÉ.”
45
Certification
II) Listed (DIVQ, DIVQ7/CSA Certified ) Circuit Breakers, Type, manufacturer and elec-
trical ratings as specified below:
Cat. No. Housing Type Manufacturer Ratings
5SJ4 318-8HG42 Siemens
S203UP-K 15 ABB
07G6 A 480Y/277V, 15A
FAZ D15/3-NA Eaton
1489 A3D 150 Allen Bradley
S203UP-K 15 ABB
09G6 A 480Y/277V, 15A
FAZ D15/3-NA Eaton
S203UP-K 15 ABB
10G6 A 480Y/277V, 15A
FAZ D15/3-NA Eaton
III) Listed (NKJH, NKJH7/CSA Certified) Type E Self Protected Manual Motor Control-
lers, Type and manufacturer and electrical ratings as specified below:
Cat. Housing Self Protected Manual Manufac- Self Protected Dial
No. Motor Controller, turer Manual Motor setting
Type Controller, [A]
ratings
07G6 A PKZM0(1) 6.3-E Eaton 480Y/277V, 3.0 Hp 6
09G6 A PKZM0(1) 10-E Eaton 480Y/277V, 7.5 Hp 10
10G6 A PKZM0(1) 10-E Eaton 480Y/277V, 7.5 Hp 10
DC - Bus Circuit Protection for G6-A Drive Series:

Cat. No. Housing Input Voltage Class CC, J or RK5
[VDC] UL248 Fuse rating 600V [A]
07G6 A in preparation
09G6 A in preparation
07G6 A 680 10
09G6 A 680 15
10G6 A 680 20
46
Certification
5.4 Further informations and documentation

You find supplementary manuals and instructions for the download under
www.keb.de/de/service/downloads
General instructions
• EMC and safety instructions
• Manuals for additional control boards, safety modules, fieldbus modules, etc.
Instruction and information for construction and development

• Input fuses in accordance with UL
• Programming manual for control and power unit
• Motor configurator to select the appropriate drive converter and to create downloads
for parameterizing the drive converter
Approvals and approbations

• Declaration of conformity CE
• TÜV certificate
• FS certification
Others
• COMBIVIS, the software for comfortable parameterization of drive converters via
PC (available per download)
• EPLAN- drawings
47
Accessories
6 Accessories
6.1 Mounting kit shield connection braket

A mounting kit is available for large surface of the shieldings of the connecting cables:
Material number Name
B0G6T88-0001 Mounting kit shield connection braket
Table 10: Mounting kit shield connection braket for G6 housing A
56
Figure 20: G6 housing A with optional mounting kit
48
Revision History
7 Revision History
Revision Date Description
1B 2011-03 First published version
„Original manual“ inserted; Type code extended; technical data changed; Connection
1C 2011-09
braking resistor changed
recommended supply and motor cable cross-section removed; Drawings mains and
1D 2012-02
motor connection changed; UL certification; Addresses on the rear side
1E 2012-07 Terminal description supplement
1F 2013-09 Completely revised; 230 V class included
Type code extended to VARAN: Technical data have been adapted; Voltages for DC
1G 2014-04
operation; UL certification adapted
Version Date Description
00 2014-04 Changed to document number. Revision 1G is identical to version 00
01 2018-03 Insertion of dimensions. Conversion to new KEB corporate identity optics
02 2018-10 Editorial changes, warning symbol inserted
03 2019-05 Dimensions for mounting kit inserted
04 2020-03 Adjustments Type code; editorial changes
05 2020-09 Editorial changes
49
NOTES
50
Austria | KEB Automation GmbH
P. R. China | KEB Power Transmission Technology (Shanghai) Co. Ltd.
Ritzstraße 8 4614 Marchtrenk Austria
No. 435 QianPu Road Chedun Town Songjiang District
Tel: +43 7243 53586-0 Fax: +43 7243 53586-21
201611 Shanghai P.R. China
E-Mail: info@keb.at Internet: www.keb.at
Tel: +86 21 37746688 Fax: +86 21 37746600
E-Mail: info@keb.cn Internet: www.keb.cn
Benelux | KEB Automation KG
Dreef 4 - box 4 1703 Dilbeek Belgium
Poland | KEB Automation KG
Tel: +32 2 447 8580
Tel: +48 60407727
E-Mail: info.benelux@keb.de Internet: www.keb.de
E-Mail: roman.trinczek@keb.de Internet: www.keb.de
Brazil | KEB South America - Regional Manager

Republic of Korea | KEB Automation KG
Rua Dr. Omar Pacheco Souza Riberio, 70
Room 1709, 415 Missy 2000 725 Su Seo Dong
CEP 13569-430 Portal do Sol, São Carlos Brazil
Gangnam Gu 135- 757 Seoul Republic of Korea
Tel: +55 16 31161294 E-Mail: roberto.arias@keb.de
Tel: +82 2 6253 6771 Fax: +82 2 6253 6770 E-Mail: vb.korea@keb.de
Czech Republic | KEB Automation GmbH

Russian Federation | KEB RUS Ltd.
Videnska 188/119d 61900 Brno Czech Republic
Lesnaya str, house 30 Dzerzhinsky MO
Tel: +420 544 212 008
140091 Moscow region Russian Federation
E-Mail: info@keb.cz Internet: www.keb.cz
Tel: +7 495 6320217 Fax: +7 495 6320217
E-Mail: info@keb.ru Internet: www.keb.ru
France | Société Française KEB SASU
Z.I. de la Croix St. Nicolas 14, rue Gustave Eiffel
Spain | KEB Automation KG
94510 La Queue en Brie France
c / Mitjer, Nave 8 - Pol. Ind. LA MASIA
Tel: +33 149620101 Fax: +33 145767495
08798 Sant Cugat Sesgarrigues (Barcelona) Spain
E-Mail: info@keb.fr Internet: www.keb.fr
Tel: +34 93 8970268 Fax: +34 93 8992035 E-Mail: vb.espana@keb.de
Germany | Geared Motors

Switzerland | KEB Automation AG
KEB Antriebstechnik GmbH
Witzbergstrasse 24 8330 Pfaeffikon/ZH Switzerland
Wildbacher Straße 5 08289 Schneeberg Germany
Tel: +41 43 2886060 Fax: +41 43 2886088
Telefon +49 3772 67-0 Telefax +49 3772 67-281
E-Mail: info@keb.ch Internet: www.keb.ch
Internet: www.keb-drive.de E-Mail: info@keb-drive.de
United Kingdom | KEB (UK) Ltd.
Italy | KEB Italia S.r.l. Unipersonale
5 Morris Close Park Farm Indusrial Estate
Via Newton, 2 20019 Settimo Milanese (Milano) Italia
Wellingborough, Northants, NN8 6 XF United Kingdom
Tel: +39 02 3353531 Fax: +39 02 33500790
Tel: +44 1933 402220 Fax: +44 1933 400724
E-Mail: info@keb.it Internet: www.keb.it
E-Mail: info@keb.co.uk Internet: www.keb.co.uk
Japan | KEB Japan Ltd.

United States | KEB America, Inc
15 - 16, 2 - Chome, Takanawa Minato-ku Tokyo 108 - 0074 Japan
5100 Valley Industrial Blvd. South
Tel: +81 33 445-8515 Fax: +81 33 445-8215
Shakopee, MN 55379 United States
E-Mail: info@keb.jp Internet: www.keb.jp
Tel: +1 952 2241400 Fax: +1 952 2241499
E-Mail: info@kebamerica.com Internet: www.kebamerica.com
MORE KEB PARTNERS WORLDWIDE:
... www.keb.co.uk/contact/contact-worldwide
Automation with Drive www.keb.de
KEB Automation KG Suedstrasse 38 32683 Barntrup Tel. +49 5263 401-0 E-Mail: info@keb.de

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COMBIVERT G6

INSTRUCTIONS FOR USE | INSTALLATION G6 HOUSING A

Translation of the original manual

Signal words and symbols

NOTICE Situation, which can cause damage to property in case of non-obser-

Note to further documentation.

Laws and guidelines

Warranty and liability

Here you will find our general sales conditions.

Further agreements or specifications require a written confirmation.

1 Basic Safety Instructions............................................. 14

3.1.4.1 Device classification......................................................................................................... 27

4 Installation and Connection......................................... 34

PFH Term used in the safety technology

Standards for drive converters / control cabinets

Basic standards to which drive converter standards refer directly

EN 61000-4-5 Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement

Standards that are used in the environment of the drive converter

1 Basic Safety Instructions

NOTICE Hazards and risks through ignorance.

► Read the instructions for use !

► Observe the safety and warning instructions !

► If anything is unclear, please contact KEB Automation KG !

1.1 Target group

1.2 Transport, storage and proper use

Transport of drive converters with an edge length >75 cm

Drive converters contain electrostatic sensitive components.

ESD ► Wear ESD-protective clothing.

Do not store drive converters

DANGER Do not operate in an explosive environment!

► The COMBIVERT is not intended for the use in potentially explosive

CAUTION Maximum design edges and high weight!

Contusions and bruises!

► Wear safety shoes.

► Secure drive converter accordingly when using lifting gear.

• To prevent damages to the device:

1.4 Electrical connection

DANGER Voltage at the terminals and in the device !

Danger to life due to electric shock !

► Await capacitor discharge time (5 minutes) if necessary, measure

► If personal protection is required, install suitable protective devices

► Connect the protective earth conductor always to drive converter

► Install all required covers and protective devices for operation.

► The control cabinet shall be kept closed during operation.

► Residual current: This product may cause a dc current in the pro-

► Drive converters with a leakage current > 3.5 mA AC current (10 mA

If personnel protection is required during installation of the

1.4.1 EMC-compatible installation

Notes on EMC-compatible installation can be found here.

1.4.2 Voltage test

According to EN 60204-1 it is permissible to disconnect already tested com-

1.4.3 Insulation measurement

An insulation measurement (in accordance with EN 60204-1 chapter 18.3) with DC

1.5 Start-up and operation

WARNING Software protection and programming !

Hazards caused by unintentional behavior of the drive!

► Securing a unit solely with software-supported functions is not suf-

► Secure motors against automatic restart.

CAUTION High temperatures at heat sink and coolant!