Corrective maintenance
9.1 Replacing inverter components
Overview of replacing converter components
Permissible replacement of components
In the event of a long-term function fault, you must replace the Power Module or Control
Unit. The converter's Power Module and Control Unit can be replaced independently of each
other.
Replacing the Power Module
Replacing the Control Unit
Replacement:
• Same type
• Same power rating
Replacement:
• Same type
•
Higher
power rating
Replacement:
• Same type
• Same firmware version
Replacement:
• Same type
•
higher
firmware version
(e.g. replace FW V4.2 by
FW V4.3)
Power Module and motor must be
adapted to one another (ratio of
motor and Power Module rated
power > 1/8)
After replacing the Control Unit, you must restore the con-
verter's settings.
Replacing converters of different types can result in an unpredictable drive response.
In all cases that are not permitted according to the table above, recommission the drive
after replacing an converter.
Device replacement without removable storage medium - only for communication via PROFINET
If you have created a topology in your control, you can use environment detection to replace
a defective converter with a new device of the same type and with the same software
release. Recommissioning is not required in this case.
You can either load the converter settings into the converter using the memory card or – if
you are using a SIMATIC S7 controller with DriveES – using DriveES.
Details of the device replacement without removable storage medium can be found in the
Profinet system description (http://support.automation.siemens.com/WW/view/en/19292127
).
Converter with control units CU240D-2
238 Operating Instructions, 04/2015, FW V4.7.3, A5E34262100B AB
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