Siemens SINAMICS G180 User manual

Installation and operating instructions
SINAMICS G180
Compact inverter units, cabinet systems,
air-cooled and liquid-cooled cabinet units
05/2013Edition
Answers for industry.

Installation and operating
instructions Sinamics G180
Operating Instructions
05/2013
4BS0751-001
Introduction
1
Safety information
2
Description
3
Preparations for use
4
Installation
5
Electrical connection
6
Commissioning
7
Operation
8
Maintenance
9
Spare parts and accessories
10
Diagnostics, faults and
warnings
11
Service & Support
A
Quality documents
B
Technical data
C
List of abbreviations
D

Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will be
used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property
damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified
personnel are those who, based on their training and experience, are capable of identifying risks and avoiding
potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended or
approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software described.
Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in
this publication is reviewed regularly and any necessary corrections are included in subsequent editions.
Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
Order number: 4BS0751
Ⓟ 06/2013 Technical data subject to change
Copyright © Siemens AG 2013.
All rights reserved

Table of contents
1 Introduction...................................................................................................................................................9
1.1 About these instructions................................................................................................................9
1.2 Text format features......................................................................................................................9
1.3 Presentation of the display buttons in the operating instructions................................................10
1.4 Specific features..........................................................................................................................10
2 Safety information.......................................................................................................................................13
2.1 The five safety rules....................................................................................................................13
2.2 Use of tested, certified and Siemens-approved components......................................................14
2.3 Areas that are potentially and particularly hazardous..................................................................14
2.4 Notes for operator protection.......................................................................................................16
2.5 Notes on water cooling:...............................................................................................................19
2.6 Safety precautions when handling anti-freeze.............................................................................20
2.7 Standards and guidelines for proper use of inverters..................................................................21
2.8 Plant safety..................................................................................................................................22
2.9 Components that can be destroyed by electrostatic discharge (ESD)........................................23
2.10 Electromagnetic fields.................................................................................................................24
2.11 Radio telephones and mobile telephones...................................................................................25
2.12 Note regarding fiber-optic cables.................................................................................................26
2.13 Provide fuse protection for external control voltage....................................................................26
3 Description..................................................................................................................................................27
3.1 Updating inverter software or instructions...................................................................................27
3.2 Order numbers / Type designations............................................................................................27
4 Preparations for use...................................................................................................................................33
4.1 Transporting inverter...................................................................................................................33
4.2 Storage of the inverters...............................................................................................................36
4.3 EMC.............................................................................................................................................37
4.3.1 Install and connect in accordance with EMC...............................................................................37
4.3.2 Examples for correct EMC connection........................................................................................38
4.3.3 Radio interference class..............................................................................................................40
4.3.4 EMC environment category.........................................................................................................41
4.4 Realizing operation in the explosion-protected zone...................................................................42
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5 Installation...................................................................................................................................................45
5.1 Installing inverter - General notes................................................................................................45
5.2 Installing compact devices...........................................................................................................46
5.3 Protective cover IP21 for compact and compact Plus devices....................................................46
5.4 Installing cabinet units.................................................................................................................47
5.5 Installing external display............................................................................................................48
6 Electrical connection...................................................................................................................................51
6.1 General information about the electrical connection...................................................................51
6.2 Protecting the inverter.................................................................................................................51
6.3 Circuit breaker.............................................................................................................................52
6.4 Connecting control cable.............................................................................................................52
6.5 Line supply connection................................................................................................................53
6.5.1 Suitable supply line configurations..............................................................................................53
6.5.2 Dimensioning mains power cables..............................................................................................53
6.5.3 Connecting mains power cable to the inverter............................................................................54
6.5.4 Inverter connection for different pulse operation.........................................................................55
6.5.5 Adjusting the line voltage at the inverter......................................................................................56
6.6 Motor connection.........................................................................................................................57
6.6.1 Motor selection............................................................................................................................57
6.6.2 Coil load.......................................................................................................................................58
6.6.3 Motor voltage and type of circuit..................................................................................................58
6.6.4 Dimensioning motor cables.........................................................................................................58
6.6.5 Dimensioning maximum motor cable length................................................................................59
6.6.6 Connecting motor cable...............................................................................................................60
6.6.7 Connecting the PTC thermistor of the motor to the inverter........................................................61
6.7 Connection of external control voltage........................................................................................61
6.7.1 Provide fuse protection for external control voltage....................................................................61
6.7.2 Use of external control voltage....................................................................................................61
6.7.3 Adapting the hardware to external control voltage......................................................................62
6.7.4 Preparations for accessing the "switching power supply" board.................................................62
6.7.4.1 Preparing compact devices with size up to 165 mm...................................................................62
6.7.4.2 Preparing compact devices with size up to 225 mm...................................................................63
6.7.4.3 Preparing compact devices with frame size K4 with 400 V or 500 V..........................................63
6.7.4.4 Providing compact devices with the frame size K4 with 690 V....................................................64
6.7.4.5 Providing compact devices with frame size K5/51 with 400 V or 500 V......................................65
6.7.4.6 Providing compact devices with the frame size K5/51 with 690 V...............................................66
6.7.4.7 Preparing compact devices with frame size K6 with 400 V or 500 V..........................................67
6.7.4.8 Providing compact devices with the frame size K6 with 690 V....................................................67
6.7.5 Connecting external control voltage for compact devices...........................................................68
6.7.6 Control voltage 230 V for cabinet units........................................................................................69
7 Commissioning...........................................................................................................................................71
7.1 Checks without mains power supply and without motor..............................................................71
7.2 Checks with mains power supply and without motor...................................................................73
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7.3 Checks with mains power supply and with motor........................................................................77
7.4 Checking with motor coupled to the work machine.....................................................................78
8 Operation....................................................................................................................................................79
8.1 Operation.....................................................................................................................................79
8.1.1 Function of the inverter display....................................................................................................79
8.1.2 Switching the unit on and off.......................................................................................................80
8.1.3 Setting the language....................................................................................................................81
8.1.4 Setting the date and time.............................................................................................................81
8.1.5 Setting the level of detail of the inverter menu............................................................................81
8.1.6 Inverter operating commands......................................................................................................81
8.1.7 Configuring operating sources.....................................................................................................83
8.1.8 Invoking mode configurations......................................................................................................83
8.1.9 Communication Options..............................................................................................................84
8.1.10 Meaning of the abbreviations for operating functions..................................................................85
8.1.11 Function of "P-Profibus/Modbus".................................................................................................85
8.1.12 Function of "P-DIGITAL OUTPUTS"...........................................................................................85
8.1.13 Function of "P-ANALOG OUTPUTS"..........................................................................................86
8.1.14 Operation of several inverters on one PC...................................................................................86
8.2 Standard mode settings...............................................................................................................87
8.2.1 Mode "std siss"............................................................................................................................87
8.2.2 Mode "std sisd"............................................................................................................................88
8.2.3 Mode "std dids"............................................................................................................................89
8.2.4 Mode "std didd"...........................................................................................................................90
8.3 NAMUR mode settings................................................................................................................90
8.3.1 Operation according to NAMUR defaults....................................................................................90
8.3.2 Operation according to "NAMUR 1"............................................................................................91
8.3.3 Operation according to "NAMUR 2"............................................................................................92
8.3.4 Operation according to "NAMUR 3"............................................................................................93
8.3.5 Operation according to "NAMUR 4"............................................................................................94
8.3.6 Operation according to "NAMUR 5"............................................................................................95
8.3.7 Operation according to "NAMUR 6"............................................................................................96
8.4 Controlling the external connections of the inverter....................................................................97
8.4.1 Function of the control cable terminals........................................................................................97
8.4.2 Protective separation according to EN 61800-5-1.......................................................................97
8.4.3 Sub-D and USB connections and DIL switches........................................................................100
8.4.4 USB interface............................................................................................................................100
8.4.5 DIL switches "S1" and "S2".......................................................................................................101
8.4.6 Connecting encoders.................................................................................................................103
8.4.7 Connect the PC via USB at -X50B............................................................................................105
8.4.8 Connecting a PC to -X51 via RS 232........................................................................................106
8.4.9 Connection for optional external display with RS 485...............................................................107
8.5 Special functions.......................................................................................................................108
8.5.1 Protective functions...................................................................................................................108
8.5.2 Multiple function of the analog and digital inputs.......................................................................112
8.6 Setpoint channel and closed-loop control..................................................................................116
8.6.1 Specifying source for speed setpoint.........................................................................................116
8.7 Parameterization.......................................................................................................................116
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8.7.1 Principle of operation of the configuration.................................................................................116
8.7.2 Protecting parameters against modification..............................................................................118
8.7.3 Configuration using the inverter display....................................................................................118
8.7.4 More documentation about parameterization............................................................................118
8.8 Examples / Applications............................................................................................................119
8.8.1 "Standard" application...............................................................................................................119
8.8.1.1 Standard control cable terminals...............................................................................................119
8.8.1.2 Control cable terminals "peripheral board 1".............................................................................120
8.8.1.3 Control cable terminals "peripheral board 2".............................................................................120
8.8.1.4 Control cable terminals "peripheral board 3".............................................................................121
8.8.1.5 Control cable terminals "peripheral board 4".............................................................................122
8.8.1.6 Mode setting of the "Standard" application................................................................................122
8.8.1.7 Assignment of the digital inputs.................................................................................................123
8.8.1.8 Assignment of the digital outputs...............................................................................................123
8.8.1.9 Assignment of the analog inputs...............................................................................................123
8.8.1.10 Assignment of the analog outputs.............................................................................................124
8.8.1.11 Input "Safe halt" / PTC thermistor inputs on peripheral board...................................................124
8.8.2 "NAMUR" application.................................................................................................................125
8.8.2.1 Control cable terminals for "NAMUR" application......................................................................125
8.8.2.2 Control cable terminals "peripheral board 4".............................................................................126
8.8.2.3 Mode setting of the NAMUR application....................................................................................127
8.8.2.4 Assignment of the relay outputs................................................................................................128
8.8.2.5 Assignment of the analog inputs...............................................................................................128
8.8.2.6 Assignment of the analog outputs.............................................................................................129
8.8.2.7 Input "Mandatory mains power isolation" / PTC thermistor inputs on peripheral board............129
9 Maintenance.............................................................................................................................................131
9.1 Maintenance and servicing........................................................................................................131
9.2 Replacing compact device.........................................................................................................132
9.3 Replacing fans for the compact device......................................................................................133
9.4 Maintenance and service of water cooling (option)...................................................................133
9.5 Decommissioning......................................................................................................................133
10 Spare parts and accessories....................................................................................................................135
10.1 Use of tested, certified and Siemens-approved components....................................................135
10.2 Peripheral boards 1 to 4............................................................................................................136
10.2.1 General information about the peripheral boards 1 to 4............................................................136
10.2.2 Electronic shutdown for "Safe halt" / PTC inputs ......................................................................137
10.2.2.1 Standards for electronic shutdown............................................................................................137
10.2.2.2 General information about electronic shutdown........................................................................137
10.2.2.3 Motor temperature monitoring shutdown concept ....................................................................137
10.2.2.4 Risk comparison........................................................................................................................138
10.2.3 "Safe halt"..................................................................................................................................139
10.2.3.1 Checking the "Safe halt" function..............................................................................................140
10.2.3.2 "Safe halt" in the DC link version...............................................................................................140
10.2.4 PTC inputs for motor PTC thermistor........................................................................................141
10.2.4.1 Checking the PTC thermistor shutdown function......................................................................141
10.3 Brake transistor and brake resistor............................................................................................142
10.3.1 Dimensioning the brake resistor................................................................................................143
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10.3.2 Connecting the brake resistor....................................................................................................143
10.4 Parameter overview...................................................................................................................143
10.5 "Factory settings" application....................................................................................................143
10.6 Protective cover IP21 for compact and compact Plus devices..................................................144
10.7 Main switch "Q 2T..." or "W 2T..."..............................................................................................144
10.8 DC link terminals for compact devices......................................................................................145
10.9 External display.........................................................................................................................147
10.10 RFI suppression filter, category C1 (class B)............................................................................147
10.11 Strengthened du/dt filter............................................................................................................148
10.12 Sine-wave filter..........................................................................................................................148
10.13 Additional mains power protection chokes................................................................................148
10.14 Profibus DP...............................................................................................................................148
10.15 Modbus RTU.............................................................................................................................150
10.16 Modbus TCP..............................................................................................................................152
10.17 Water cooling.............................................................................................................................154
10.17.1 General information about water cooling...................................................................................154
10.17.2 Direct water cooling diagram.....................................................................................................155
10.17.3 Connecting water cooling..........................................................................................................156
10.17.4 Venting the water cooling..........................................................................................................156
10.17.5 Decommissioning and shutdown...............................................................................................157
10.17.6 Cooling water additives for the closed inverter cooling with cooling unit (optional)...................157
11 Diagnostics, faults and warnings..............................................................................................................159
11.1 Reading event log......................................................................................................................159
A Service & Support.....................................................................................................................................161
A.1 Siemens Industry Online Support..............................................................................................161
A.2 Contacts in Ruhstorf an der Rott location (Germany)................................................................162
B Quality documents....................................................................................................................................163
C Technical data..........................................................................................................................................169
C.1 Technical data for transportation...............................................................................................169
C.2 Technical data for storage.........................................................................................................170
C.3 Frame sizes of compact units....................................................................................................171
C.4 Frame sizes of cabinet units......................................................................................................173
C.5 Technical data for operation......................................................................................................175
C.6 Tightening torques for power cables.........................................................................................176
C.7 Technical data of the control cable terminals............................................................................176
C.8 Technical data and identification of the PTC thermistor input at peripheral boards 2 and 4.....177
C.9 Technical data of the direct water cooling.................................................................................178
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C.10 Permissible substance values for the cooling water..................................................................180
C.11 Threshold values for fan control system....................................................................................180
C.12 Derating.....................................................................................................................................181
C.12.1 Current derating.........................................................................................................................181
C.12.2 Voltage derating........................................................................................................................183
D List of abbreviations..................................................................................................................................185
Index.........................................................................................................................................................187
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Installation and operating instructions Sinamics G180
8Operating Instructions, 05/2013, 4BS0751-001

Introduction 1
1.1 About these instructions
These instructions describe the converter and explain how to handle it, from initial delivery to
final disposal of the equipment. Keep these instructions for later use.
Read these instructions before you handle the converter and follow the instructions. The
instructions contain information about the safe handling of the converter as well as its
components and modules. They provide information on assembling, installing, and maintaining
the equipment properly.
If you have suggestions for improving the document, please contact our Service Center.
1.2 Text format features
Text format features
The warning notice system is explained on the rear of the inside front. Always follow the safety
instructions and notices in these instructions.
In addition to the safety-related warning notices which you must read, you will find the text in
these instructions is formatted in the following way:
1. Handling instructions are always formatted as a numbered list. Always perform the steps
in the order given.
● Lists are formatted as bulleted lists.
– Lists on the second level are hyphenated.
Note
A Note is an important item of information about the product, handling of the product or the
relevant section of the document. Notes provide you with help or further suggestions/ideas.
Installation and operating instructions Sinamics G180
Operating Instructions, 05/2013, 4BS0751-001 9

1.3 Presentation of the display buttons in the operating instructions
Table 1-1 Presentation of the display buttons in the text
Button on the inverter display Presentation in the text
,
<On>
2
<Off>
3
<P>
6
<S>
<I>
<ENTER>
<up arrow>
<down arrow>
1.4 Specific features
The following text formats are used in this operating manual.
Display buttons
Table 1-2 Presentation of specific features
Description in the text Meaning
<up arrow> Press the button on the control panel once.
<arrow up_arrow up> Press the button on the control panel twice.
<S+I> Press both buttons simultaneously.
Display text
"P-SYSTEM_DATA"
Text shown in the control panel display is presented like this.
Introduction
1.4 Specific features
Installation and operating instructions Sinamics G180
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If you have to branch in a menu, the text will be shown as follows: "P-EXTRAS/Language".
Thereby "P-EXTRAS" symbolizes the main menu and "Language" the submenu. In this case,
you are configuring the language in the "P-EXTRAS" menu. The display shows "P-EXTRAS"
at the beginning. If you change to this menu, the display only shows "Language"
Introduction
1.4 Specific features
Installation and operating instructions Sinamics G180
Operating Instructions, 05/2013, 4BS0751-001 11

Safety information 2
2.1 The five safety rules
For your personal safety and in order to prevent material damage it is essential that you adhere
to all the safety notices contained in your product documentation. Pay particular attention to
the safety notices on the product itself. When working on the equipment, always observe the
following five safety rules as defined by EN 50110‑1 "Working in a voltage-free state". Apply
the five safety rules in the sequence stated before starting work.
Five safety rules
1. Disconnect the system.
Disconnect the auxiliary circuits, for example anti-condensation heating.
Wait until the capacitors have discharged.
2. Lockout to protect against reconnection.
3. Make sure that the equipment is de-energized and in a no-voltage condition.
4. Ground and short-circuit.
5. Cover or enclose adjacent components that are still live.
When you have finished working on the equipment, apply the measures in reverse order.
DANGER
High voltages
Potentially fatal voltages occur when this equipment is in operation which can remain present
even after the inverter is switched off.
High voltages cause death, serious injury or material damage if the safety instructions are
not observed or if the equipment is handled improperly.
● Ensure that only qualified and authorized personnel perform work on the inverter.
● Always observe the five safety rules specified above whenever you are carrying out any
work on the device.
Installation and operating instructions Sinamics G180
Operating Instructions, 05/2013, 4BS0751-001 13

2.2 Use of tested, certified and Siemens-approved components
Observe the following instructions if you would like to integrate your own components in the
system.
WARNING
Components which are not approved
It is dangerous to use components which are not tested, not certified and not approved by
Siemens. This can result in death, serious injury or material damage.
Use only components which are tested, certified and approved by Siemens.
2.3 Areas that are potentially and particularly hazardous
Certain areas in the inverter can represent a hazard during operation. The diagram highlights
these areas that represent a potential hazard.
Observe the following safety notices and comply with all rules and instructions.
Safety information
2.3 Areas that are potentially and particularly hazardous
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14 Operating Instructions, 05/2013, 4BS0751-001

①Stopping the inverter via the display or by means of external control devices does not disconnect
the inverter from the line voltage.
②When you press the Emergency Off button, this does not mean that the inverter is voltage-free
immediately.
③Danger due to hazardous voltages when the cabinet doors are open.
④These voltages can remain due to self-excitation if the connection to the motor is not removed.
Some surfaces in the inverter are hot during operation and for some time afterwards. Fans in
the inverter can continue to rotate after the unit has been switched off.
⑤Hazardous voltages can persist in the DC link (with current-source DC link inverters: in the
commutation capacitors) or from external or auxiliary power sources after the inverter has been
disconnected from the line voltage.
Depending on parameter settings and connection of external control devices, the inverter can
start up automatically when the line voltage is connected.
Figure 2-1 Areas that are potentially and particularly hazardous
Safety information
2.3 Areas that are potentially and particularly hazardous
Installation and operating instructions Sinamics G180
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WARNING
Live components
During operation and shortly after the system has been switched off with the Emergency Off
button, high voltages are still present in the inverter and its components. These voltages may
remain if the connection to the motor is not removed or grounded. This danger exists with
permanent-magnet synchronous motors and synchronous motors which are not de-excited
immediately. These voltages may remain if the connection to the motor is not removed or
grounded. High voltages cause death or serious injury if the safety instructions are not
observed or if the equipment is handled improperly.
Never open the covers or doors when the system is in operation or while the DC link
capacitors are still discharging (in the case of current-source DC link inverters: commutation
capacitors). The DC link capacitors (commutation capacitors) can take up to 10 minutes to
discharge (or 5 minutes with compact devices) after the Emergency Off button is actuated.
WARNING
Automatic startup
Depending on parameter settings and connection of external control devices, the inverter
can start up automatically when the line voltage is connected. This can result in death, serious
injury or material damage.
Confirm whether or not your system is capable of automatic starting and, if appropriate, take
measures to ensure personal safety and operational readiness at the driven machine.
2.4 Notes for operator protection
Read the following information about personal protection.
The unit meets the safety requirements as defined by IEC EN 61800‑5‑1 and UL 508 C.
Specialist personnel
Ensure that any transport, installation, operation or maintenance work is carried out by
qualified, trained staff. The minimum qualification must be that of an electrician in accordance
with EN 50110 "Operation of electrical systems".
For the purpose of these basic safety instructions, "skilled technical personnel" means people
who are familiar with the installation, mounting, commissioning and operation of the product.
They must be properly qualified for the tasks with which they are charged. Qualified personnel
must also be thoroughly familiar with all the safety-related instructions and measures described
in the product documentation.
Safety information
2.4 Notes for operator protection
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Safety-relevant information for working on the inverter
DANGER
Live, moving or rotating parts
Inverters have live, moving or rotating parts.
Death or serious injury can result if any essential covers are removed without authorization
or in the case of improper use or incorrect installation or operation.
Always take all the necessary precautions before working on the device.
DANGER
High voltages
High voltages cause death or serious injury if the safety instructions are not observed or if
the equipment is handled improperly.
Voltages of more than 50 V are present when this unit is operational. These voltages may
remain for some time after switching off or as long as the motor is turning over.
Make sure that work is only carried out by qualified personnel under due observance of the
five safety rules, the information in these operating instructions, and the instructions on the
product itself.
DANGER
Auxiliary and external supply systems
Hazardous voltages (e.g. control voltage, signal voltage, supply voltage for heaters and fans)
can persist even after the inverter has been switched off. Contact with live parts can result
in death or serious injury.
Make sure that work is only carried out by qualified personnel under due observance of the
five safety rules, the information in these operating instructions, and the instructions on the
product itself.
DANGER
Electric shock
If you carry out servicing work on the inverter without safely disconnecting the power supply,
serious injury or death due to electric shock can occur. The PTC input is not an Emergency
Off input which safely disconnects the inverter or the motor from the line supply.
Safely and reliably disconnect the power supply before opening covers or terminal boxes at
the inverter. For example, use a main switch.
Safety information
2.4 Notes for operator protection
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DANGER
High voltages
Electrical accidents including electric shock occur when general safety instructions for
working on the device are not observed. Death, serious injury or material damage will result.
Please note the following information for your safety:
● Always observe the five safety rules whenever you are carrying out any work on the device.
● Always disconnect the equipment before working on it.
● Leave the covers in place during normal operation and keep the cabinet doors closed.
● Do not use any instrumentation if you know it is defective or damaged.
● Secure the main circuit breaker in the OFF position so that it cannot be reconnected, for
example by removing the switch unit when working on a connected motor or the feeder
cable to the motor.
● Ground the inverter cabinet and chassis units properly to ensure that no accessible parts
of the equipment are energized or connected in any way to a dangerous voltage source.
● Use an earthing spider for grounding purposes. Read the information provided in the
section "Safety instructions regarding maintenance and repairs" in "Maintenance and
servicing" in your operating instructions.
● Wear personnel protective gear such as goggles, ear protection and helmet to protect
yourself against injury.
● Always follow the national regulations and local specifications when working on the
equipment.
DANGER
DC link capacitor discharge time
After the mains power has been switched off, high voltages still persist in the DC link
capacitors.
These cause death or serious injury if the safety instructions are not observed or if the
equipment is handled incorrectly.
The DC link capacitors require up to 10 minutes (5 minutes for compact units) before they
are discharged to a safe value (< 60 V).
After you have switched off the main power supply, do not touch the device or carry out any
maintenance work or repair work until the discharge time of 10 minutes (5 minutes for compact
devices) have elapsed.
Measure the voltage once the discharge time has elapsed.
Safety information
2.4 Notes for operator protection
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