Siemens Sinamics CU240D-2 DP User manual

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SINAMICS
SINAMICS G120D
Converter with the control units
CU240D-2
Operating Instructions
Edition 04/2018, firmware V4.7 SP10
04/2018, FW V4.9 SP10
A5E34262100B AF
Changes in the current
edition
Fundamental safety
instructions
1
Introduction
2
Description
3
Installation
4
Commissioning
5
Advanced commissioning
6
Backing up data and series
commissioning
7
Alarms, faults and system
messages
8
Corrective maintenance
9
Technical data
10
Appendix
A

Siemens AG
Division Digital Factory
Postfach 48 48
90026 NÜRNBERG
GERMANY
Ⓟ
04/2018 Subject to change
Copyright © Siemens AG 2018.
All rights reserved
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.

Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF 3
Changes in the current edition
Essential changes with respect to Edition 09/2017
New functions
Firmware version 4.7 SP10 (Page 321)
Corrections
●The PROFINET connectors of the Control Unit are sockets (not socket and connector).
Connections and cables (Page 51)
●Diagrams standardized for the reduction of the output current as a function of installation
altitude.
Current derating as a function of the installation altitude (Page 316)
Revised descriptions
●Only commissioning using the Startdrive PC-based tool is described. Commissioning with
STARTER has been removed.
Exceptions: Write and know-how protection.
You can find information on commissioning with STARTER on the Internet:
Operating Instructions, 09/2017 Edition
(https://support.industry.siemens.com/cs/ww/en/view/109751328)

Changes in the current edition
Converter with the control units CU240D-2
4Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF

Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF 5
Table of contents
Changes in the current edition................................................................................................................. 3
1 Fundamental safety instructions............................................................................................................ 11
1.1 General safety instructions .....................................................................................................11
1.2 Equipment damage due to electric fields or electrostatic discharge ......................................17
1.3 Warranty and liability for application examples ......................................................................17
1.4 Industrial security ....................................................................................................................18
1.5 Residual risks of power drive systems....................................................................................20
2 Introduction........................................................................................................................................... 23
2.1 About the Manual....................................................................................................................23
2.2 Guide through the manual ......................................................................................................24
3 Description............................................................................................................................................ 27
3.1 SINAMICS G120D CU240D-2 Inverter...................................................................................28
3.2 Directives and standards ........................................................................................................29
3.3 Motors and multi-motor drives that can be operated ..............................................................32
4 Installation ............................................................................................................................................ 33
4.1 Mechanical Installation............................................................................................................33
4.2 Electrical Installation ...............................................................................................................36
4.2.1 Overview of the interfaces ......................................................................................................36
4.2.2 Permissible line supplies ........................................................................................................37
4.2.3 Protective conductor ...............................................................................................................38
4.2.4 Grounding converter and motor..............................................................................................40
4.2.5 Basic EMC Rules ....................................................................................................................42
4.2.6 Connections and interference suppression ............................................................................43
4.2.7 Equipotential bonding .............................................................................................................43
4.2.8 Branch circuit protection of individual inverters ......................................................................45
4.2.9 Branch circuit protection of multiple inverters.........................................................................48
4.2.10 24-V power supply with multiple inverters ..............................................................................50
4.2.11 Connections and cables .........................................................................................................51
4.2.12 Fieldbus interfaces..................................................................................................................59
4.2.13 Connecting the motor to the inverter in a star or delta connection.........................................59
4.2.14 Connecting the motor holding brake.......................................................................................61
4.2.15 Factory settings of the inputs and outputs..............................................................................62
4.2.16 Default settings of inputs and outputs.....................................................................................63
4.2.17 Fail-safe digital input ...............................................................................................................71
4.3 Connecting the inverter to PROFINET ...................................................................................72
4.3.1 Connecting the PROFINET interface......................................................................................74
4.3.2 What do you have to set for communication via PROFINET?................................................74
4.3.3 Installing GSDML ....................................................................................................................76

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4.4 Connecting the inverter to PROFIBUS .................................................................................. 76
4.4.1 What do you have to set for communication via PROFIBUS? .............................................. 77
4.4.2 Integrating the inverter in PROFIBUS.................................................................................... 77
4.4.3 Installing the GSD .................................................................................................................. 78
4.4.4 Setting the address ................................................................................................................ 78
5 Commissioning ..................................................................................................................................... 81
5.1 Commissioning tools.............................................................................................................. 81
5.2 Commissioning guidelines ..................................................................................................... 83
5.3 Preparing for commissioning ................................................................................................. 84
5.3.1 Inverter factory setting ........................................................................................................... 84
5.3.2 Selecting the control mode .................................................................................................... 87
5.4 Quick commissioning with the IOP-2 ..................................................................................... 88
5.5 Quick commissioning with a PC............................................................................................. 91
5.5.1 Creating a project................................................................................................................... 92
5.5.2 Transfer inverters connected via USB into the project .......................................................... 92
5.5.3 Carrying out quick commissioning ......................................................................................... 93
5.5.4 Adapting the encoder data..................................................................................................... 95
5.5.5 Identify motor data ................................................................................................................. 95
5.6 Restoring the factory setting .................................................................................................. 97
5.6.1 Restoring the factory setting .................................................................................................. 97
5.6.2 Resetting the safety functions to the factory setting .............................................................. 98
5.6.3 Restore the settings to the factory settings (without safety functions)................................... 99
6 Advanced commissioning.....................................................................................................................101
6.1 Overview of the converter functions..................................................................................... 101
6.2 Sequence control when switching the motor on and off ...................................................... 104
6.3 Adapt the default setting of the terminal strip ...................................................................... 106
6.3.1 Digital inputs......................................................................................................................... 108
6.3.2 Fail-safe digital input ............................................................................................................ 109
6.3.3 Digital outputs ...................................................................................................................... 110
6.3.4 Analog inputs ....................................................................................................................... 111
6.4 Drive control via PROFIBUS or PROFINET ........................................................................ 113
6.4.1 Receive data and send data ................................................................................................ 113
6.4.2 Telegrams ............................................................................................................................ 114
6.4.3 Control and status word 1 .................................................................................................... 117
6.4.4 Control and status word 3 .................................................................................................... 120
6.4.5 NAMUR message word ....................................................................................................... 122
6.4.6 Parameter channel............................................................................................................... 123
6.4.7 Examples for using the parameter channel ......................................................................... 127
6.4.8 Extending the telegram ........................................................................................................ 129
6.4.9 Slave-to-slave communication............................................................................................. 131
6.4.10 Acyclically reading and writing inverter parameters............................................................. 131
6.5 Jogging................................................................................................................................. 132
6.6 Limit position control ............................................................................................................ 134
6.7 Switching over the drive control (command data set).......................................................... 138

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6.8 Motor holding brake ..............................................................................................................141
6.9 Free function blocks..............................................................................................................145
6.9.1 Overview ...............................................................................................................................145
6.9.2 Further information................................................................................................................146
6.10 Selecting physical units.........................................................................................................146
6.10.1 Motor standard......................................................................................................................146
6.10.2 System of units .....................................................................................................................146
6.10.3 Technological unit of the technology controller ....................................................................148
6.10.4 Setting the system of units and technology unit ...................................................................148
6.11 Safe Torque Off (STO) safety function .................................................................................149
6.11.1 Function description..............................................................................................................150
6.11.2 Precondition for using STO...................................................................................................152
6.11.3 Commissioning STO .............................................................................................................152
6.11.3.1 Commissioning tools.............................................................................................................152
6.11.3.2 Safety functions password....................................................................................................152
6.11.3.3 Configuring a safety function ................................................................................................154
6.11.3.4 Interconnecting the "STO active" signal ...............................................................................155
6.11.3.5 Setting the filter for fail-safe digital inputs .............................................................................156
6.11.3.6 Setting the forced checking procedure (test stop) ................................................................158
6.11.3.7 Acceptance - completion of commissioning..........................................................................162
6.11.3.8 Reduced acceptance test after function expansions ............................................................163
6.12 Setpoints ...............................................................................................................................163
6.12.1 Overview ...............................................................................................................................163
6.12.2 Analog input as setpoint source............................................................................................165
6.12.3 Specifying the setpoint via the fieldbus.................................................................................167
6.12.4 Motorized potentiometer as setpoint source.........................................................................169
6.12.5 Fixed speed setpoint as setpoint source ..............................................................................172
6.13 Setpoint calculation...............................................................................................................175
6.13.1 Overview ...............................................................................................................................175
6.13.2 Invert setpoint .......................................................................................................................177
6.13.3 Inhibit direction of rotation.....................................................................................................178
6.13.4 Skip frequency bands and minimum speed..........................................................................179
6.13.5 Speed limitation ....................................................................................................................181
6.13.6 Ramp-function generator ......................................................................................................182
6.14 PID technology controller......................................................................................................186
6.15 Motor control .........................................................................................................................190
6.15.1 V/f control..............................................................................................................................191
6.15.1.1 Characteristics of U/f control.................................................................................................192
6.15.1.2 Selecting the U/f characteristic .............................................................................................193
6.15.1.3 Optimizing motor starting......................................................................................................195
6.15.2 Vector control with speed controller......................................................................................197
6.15.2.1 Structure of the vector control...............................................................................................197
6.15.2.2 Checking the encoder signal ................................................................................................199
6.15.2.3 Optimizing the speed controller ............................................................................................199
6.15.2.4 Advanced settings.................................................................................................................202
6.15.2.5 Friction characteristic ............................................................................................................205
6.15.2.6 Moment of inertia estimator ..................................................................................................207
6.15.2.7 Pole position identification ....................................................................................................213
6.15.3 Torque control.......................................................................................................................214

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8Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
6.16 Electrically braking the motor............................................................................................... 215
6.16.1 DC braking ........................................................................................................................... 216
6.16.2 Braking with regenerative feedback to the line .................................................................... 219
6.17 Overcurrent protection ......................................................................................................... 220
6.18 Inverter protection using temperature monitoring ................................................................ 221
6.19 Motor temperature monitoring using a temperature sensor ................................................ 224
6.20 Motor protection by calculating the temperature.................................................................. 228
6.21 Monitoring the driven load.................................................................................................... 230
6.21.1 Breakdown protection .......................................................................................................... 232
6.21.2 No-load monitoring............................................................................................................... 232
6.21.3 Blocking protection............................................................................................................... 233
6.21.4 Load monitoring ................................................................................................................... 234
6.21.5 Torque monitoring................................................................................................................ 235
6.21.6 Rotation monitoring.............................................................................................................. 236
6.21.7 Speed deviation monitoring ................................................................................................. 237
6.22 Efficiency optimization ......................................................................................................... 239
6.23 Switchover between different settings ................................................................................. 243
7 Backing up data and series commissioning ..........................................................................................245
7.1 Saving settings on a memory card....................................................................................... 246
7.1.1 Memory cards ...................................................................................................................... 246
7.1.2 Saving settings to the memory card..................................................................................... 247
7.1.3 Transferring the settings from the memory card.................................................................. 248
7.1.4 Activate message for a memory card that is not inserted.................................................... 249
7.2 Backup the settings to a PC................................................................................................. 250
7.3 Saving settings and transferring them using an operator panel .......................................... 252
7.4 Other ways to back up settings............................................................................................ 253
7.5 Write protection.................................................................................................................... 253
7.6 Know-how protection ........................................................................................................... 254
7.6.1 Extending the exception list for know-how protection.......................................................... 257
7.6.2 Activating and deactivating know-how protection ................................................................ 258
8 Alarms, faults and system messages ...................................................................................................263
8.1 Operating states indicated on LED ...................................................................................... 263
8.2 System runtime .................................................................................................................... 267
8.3 Identification & maintenance data (I&M).............................................................................. 267
8.4 Alarms, alarm buffer, and alarm history ............................................................................... 268
8.5 Faults, alarm buffer and alarm history ................................................................................. 272
8.6 List of alarms and faults ....................................................................................................... 276
9 Corrective maintenance .......................................................................................................................285
9.1 Spare parts compatibility...................................................................................................... 285
9.2 Replacing inverter components ........................................................................................... 285

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9.2.1 Spare parts ...........................................................................................................................286
9.2.2 Overview of replacing converter components ......................................................................287
9.2.3 Replacing a Control Unit with enabled safety function .........................................................288
9.2.4 Replacing the Control Unit without the safety functions enabled .........................................291
9.2.5 Replacing the Control Unit without data backup...................................................................293
9.2.6 Replacing a Control Unit with active know-how protection...................................................294
9.2.7 Replacing a Power Module with enabled safety function .....................................................297
9.2.8 Replacing a Power Module without the safety function being enabled ................................298
9.3 Firmware upgrade and downgrade.......................................................................................299
9.3.1 Upgrading firmware...............................................................................................................301
9.3.2 Firmware downgrade ............................................................................................................303
9.3.3 Correcting a failed firmware upgrade or downgrade ............................................................306
9.4 Reduced acceptance after component replacement and firmware change .........................307
9.5 If the converter no longer responds ......................................................................................307
10 Technical data .................................................................................................................................... 311
10.1 Performance ratings Control Unit .........................................................................................311
10.2 Performance ratings Power Module .....................................................................................312
10.3 SINAMICS G120D specifications .........................................................................................314
10.4 Data regarding the power loss in partial load operation .......................................................314
10.5 Ambient operating conditions ...............................................................................................315
10.6 Current derating as a function of the installation altitude......................................................316
10.7 Pulse frequency and current reduction .................................................................................316
10.8 Electromagnetic Compatibility ..............................................................................................317
A Appendix............................................................................................................................................. 321
A.1 New and extended functions ................................................................................................321
A.1.1 Firmware version 4.7 SP10 ..................................................................................................321
A.1.2 Firmware version 4.7 SP9 ....................................................................................................323
A.1.3 Firmware version 4.7 SP6 ....................................................................................................325
A.1.4 Firmware version 4.7 SP3 ....................................................................................................326
A.1.5 Firmware version 4.7 ............................................................................................................329
A.1.6 Firmware version 4.6 SP6 ....................................................................................................330
A.1.7 Firmware version 4.6 ............................................................................................................331
A.2 Interconnecting signals in the inverter ..................................................................................332
A.2.1 Fundamentals .......................................................................................................................332
A.2.2 Application example..............................................................................................................334
A.3 Connecting a fail-safe digital input........................................................................................335
A.4 Setting a non standard HTL encoder....................................................................................336
A.5 Acceptance tests for the safety functions .............................................................................338
A.5.1 Recommended acceptance test ...........................................................................................338
A.5.2 Acceptance test STO (basic functions).................................................................................339
A.5.3 Machine documentation........................................................................................................340
A.5.4 Documenting the settings for the basic functions, firmware V4.4 ... V4.7 SP6 ....................342
A.6 Manuals and technical support .............................................................................................343

Table of contents
Converter with the control units CU240D-2
10 Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
A.6.1 Overview of the manuals ..................................................................................................... 343
A.6.2 Configuring support.............................................................................................................. 345
A.6.3 Product Support ................................................................................................................... 346
Index ...................................................................................................................................................347

Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF 11
Fundamental safety instructions
1
1.1
General safety instructions
WARNING
Electric shock and danger to life due to other energy sources
Touching live components can result in death or severe injury.
•Only work on electrical devices when you are qualified for this job.
•Always observe the country-specific safety rules.
Generally, the following six steps apply when establishing safety:
1. Prepare for disconnection. Notify all those who will be affected by the procedure.
2. Isolate the drive system from the power supply and take measures to prevent it being
switched back on again.
3. Wait until the discharge time specified on the warning labels has elapsed.
4. Check that there is no voltage between any of the power connections, and between any
of the power connections and the protective conductor connection.
5. Check whether the existing auxiliary supply circuits are de-energized.
6. Ensure that the motors cannot move.
7. Identify all other dangerous energy sources, e.g. compressed air, hydraulic systems, or
water. Switch the energy sources to a safe state.
8. Check that the correct drive system is completely locked.
After you have completed the work, restore the operational readiness in the inverse
sequence.
WARNING
Risk of electric shock and fire from supply networks with an excessively high impedance
Excessively low short-circuit currents can lead to the protective devices not tripping or
tripping too late, and thus causing electric shock or a fire.
•In the case of a conductor-conductor or conductor-ground short-circuit, ensure that the
short-circuit current at the point where the inverter is connected to the line supply at
least meets the minimum requirements for the response of the protective device used.
•You must use an additional residual-current device (RCD) if a conductor-ground short
circuit does not reach the short-circuit current required for the protective device to
respond. The required short-circuit current can be too low, especially for TT supply
systems.

Fundamental safety instructions
1.1 General safety instructions
Converter with the control units CU240D-2
12 Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
WARNING
Risk of electric shock and fire from supply networks with an excessively low impedance
Excessively high short-circuit currents can lead to the protective devices not being able to
interrupt these short-circuit currents and being destroyed, and thus causing electric shock
or a fire.
•Ensure that the prospective short-circuit current at the line terminal of the inverter does
not exceed the breaking capacity (SCCR or Icc) of the protective device used.
WARNING
Electric shock if there is no ground connection
For missing or incorrectly implemented protective conductor connection for devices with
protection class I, high voltages can be present at open, exposed parts, which when
touched, can result in death or severe injury.
•Ground the device in compliance with the applicable regulations.
WARNING
Electric shock due to connection to an unsuitable power supply
When equipment is connected to an unsuitable power supply, exposed components may
carry a hazardous voltage that might result in serious injury or death.
•Only use power supplies that provide SELV (Safety Extra Low Voltage) or PELV-
(Protective Extra Low Voltage) output voltages for all connections and terminals of the
electronics modules.
WARNING
Electric shock due to equipment damage
Improper handling may cause damage to equipment. For damaged devices, hazardous
voltages can be present at the enclosure or at exposed components; if touched, this can
result in death or severe injury.
•Ensure compliance with the limit values specified in the technical data during transport,
storage and operation.
•Do not use any damaged devices.

Fundamental safety instructions
1.1 General safety instructions
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF 13
WARNING
Electric shock due to unconnected cable shield
Hazardous touch voltages can occur through capacitive cross-coupling due to unconnected
cable shields.
•As a minimum, connect cable shields and the conductors of power cables that are not
used (e.g. brake cores) at one end at the grounded housing potential.
WARNING
Arcing when a plug connection is opened during operation
Opening a plug connection when a system is operation can result in arcing that may cause
serious injury or death.
•Only open plug connections when the equipment is in a voltage-free state, unless it has
been explicitly stated that they can be opened in operation.
WARNING
Electric shock due to residual charges in power components
Because of the capacitors, a hazardous voltage is present for up to 5 minutes after the
power supply has been switched off. Contact with live parts can result in death or serious
injury.
•Wait for 5 minutes before you check that the unit really is in a no-voltage condition and
start work.
NOTICE
Property damage due to loose power connections
Insufficient tightening torques or vibration can result in loose power connections. This can
result in damage due to fire, device defects or malfunctions.
•Tighten all power connections to the prescribed torque.
•Check all power connections at regular intervals, particularly after equipment has been
transported.

Fundamental safety instructions
1.1 General safety instructions
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14 Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
WARNING
Spread of fire from built-in devices
In the event of fire outbreak, the enclosures of built-in devices cannot prevent the escape of
fire and smoke. This can result in serious personal injury or property damage.
•Install built-in units in a suitable metal cabinet in such a way that personnel are
protected against fire and smoke, or take other appropriate measures to protect
personnel.
•Ensure that smoke can only escape via controlled and monitored paths.
WARNING
Active implant malfunctions due to electromagnetic fields
Inverters generate electromagnetic fields (EMF) in operation. People with active implants in
the immediate vicinity of this equipment are at particular risk.
•As the operator of an EMF-emitting installation, assess the individual risks of persons
with active implants. The following clearances are usually adequate:
–No clearance to closed control cabinets and shielded MOTION-CONNECT supply
cables
–Forearm length (approx. 35 cm clearance) to distributed drive systems and open
control cabinets
WARNING
Unexpected movement of machines caused by radio devices or mobile phones
When radio devices or mobile phones with a transmission power > 1 W are used in the
immediate vicinity of components, they may cause the equipment to malfunction.
Malfunctions may impair the functional safety of machines and can therefore put people in
danger or lead to property damage.
•If you come closer than around 2 m to such components, switch off any radios or mobile
phones.
•Use the "SIEMENS Industry Online Support app" only on equipment that has already
been switched off.

Fundamental safety instructions
1.1 General safety instructions
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF 15
NOTICE
Damage to motor insulation due to excessive voltages
When operated on systems with grounded line conductor or in the event of a ground fault in
the IT system, the motor insulation can be damaged by the higher voltage to ground. If you
use motors that have insulation that is not designed for operation with grounded line
conductors, you must perform the following measures:
•IT system: Use a ground fault monitor and eliminate the fault as quickly as possible.
•TN or TT systems with grounded line conductor: Use an isolating transformer on the line
side.
WARNING
Fire due to inadequate ventilation clearances
Inadequate ventilation clearances can cause overheating of components with subsequent
fire and smoke. This can cause severe injury or even death. This can also result in
increased downtime and reduced service lives for devices/systems.
•Ensure compliance with the specified minimum clearance as ventilation clearance for
the respective component.
WARNING
Unrecognized dangers due to missing or illegible warning labels
Dangers might not be recognized if warning labels are missing or illegible. Unrecognized
dangers may cause accidents resulting in serious injury or death.
•Check that the warning labels are complete based on the documentation.
•Attach any missing warning labels to the components, where necessary in the national
language.
•Replace illegible warning labels.
NOTICE
Device damage caused by incorrect voltage/insulation tests
Incorrect voltage/insulation tests can damage the device.
•Before carrying out a voltage/insulation check of the system/machine, disconnect the
devices as all converters and motors have been subject to a high voltage test by the
manufacturer, and therefore it is not necessary to perform an additional test within the
system/machine.

Fundamental safety instructions
1.1 General safety instructions
Converter with the control units CU240D-2
16 Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
WARNING
Unexpected movement of machines caused by inactive safety functions
Inactive or non-adapted safety functions can trigger unexpected machine movements that
may result in serious injury or death.
•Observe the information in the appropriate product documentation before
commissioning.
•Carry out a safety inspection for functions relevant to safety on the entire system,
including all safety-related components.
•Ensure that the safety functions used in your drives and automation tasks are adjusted
and activated through appropriate parameterizing.
•Perform a function test.
•Only put your plant into live operation once you have guaranteed that the functions
relevant to safety are running correctly.
Note
Important safety notices for Safety Integrated functions
If you want to use Safety Integrated functions, you must observe the safety notices in the
S
afety Integrated manuals.
WARNING
Malfunctions of the machine as a result of incorrect or changed parameter settings
As a result of incorrect or changed parameterization, machines can malfunction, which in
turn can lead to injuries or death.
•Protect the parameterization (parameter assignments) against unauthorized access.
•Handle possible malfunctions by taking suitable measures, e.g. emergency stop or
emergency off.

Fundamental safety instructions
1.2 Equipment damage due to electric fields or electrostatic discharge
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF 17
1.2
Equipment damage due to electric fields or electrostatic discharge
Electrostatic sensitive devices (ESD) are individual components, integrated circuits, modules
or devices that may be damaged by either electric fields or electrostatic discharge.
NOTICE
Equipment damage due to electric fields or electrostatic discharge
Electric fields or electrostatic discharge can cause malfunctions through damaged
individual components, integrated circuits, modules or devices.
•Only pack, store, transport and send electronic components, modules or devices in their
original packaging or in other suitable materials, e.g conductive foam rubber of
aluminum foil.
•Only touch components, modules and devices when you are grounded by one of the
following methods:
–Wearing an ESD wrist strap
–Wearing ESD shoes or ESD grounding straps in ESD areas with conductive flooring
•Only place electronic components, modules or devices on conductive surfaces (table
with ESD surface, conductive ESD foam, ESD packaging, ESD transport container).
1.3
Warranty and liability for application examples
Application examples are not binding and do not claim to be complete regarding
configuration, equipment or any eventuality which may arise. Application examples do not
represent specific customer solutions, but are only intended to provide support for typical
tasks.
As the user you yourself are responsible for ensuring that the products described are
operated correctly. Application examples do not relieve you of your responsibility for safe
handling when using, installing, operating and maintaining the equipment.

Fundamental safety instructions
1.4 Industrial security
Converter with the control units CU240D-2
18 Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
1.4
Industrial security
Note
Industrial security
Siemens provides products and solutions with industrial security functions that support t
he
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement
– and continuously maintain – a holistic, state-of-the-art industrial
security con
cept. Siemens’ products and solutions constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems,
machines and networks. Such systems, machines and components should only be
connected to
an enterprise network or the Internet if and to the extent such a connection is
necessary and only when appropriate security measures (e.g. firewalls and/or network
segmentation) are in place.
For additional information on industrial security measures tha
t may be implemented, please
visit:
Industrial security (
http://www.siemens.com/industrialsecurity)
Siemens’ products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends that product updates are applied as soon as they are
available and that the latest product versions are used. Use of product versions that are no
longer supported, and failure to apply the latest updates may increase customer’s exposu
re
to cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed at:
Industrial security (
http://www.siemens.com/industrialsecurity)
Further information is provided on the Internet:
Industrial Security Configuration Manual
(https://support.industry.siemens.com/cs/ww/en/view/108862708)