Replace Control Unit - Siemens SINAMICS G120D Operating Instructions Manual

Corrective maintenance

10.2 Replace Control Unit

10.2 Replace Control Unit
Overview
You are only permitted to replace a Control Unit with a different Control Unit under certain
preconditions. After the replacement, you must transfer the settings of the Control Unit that was
replaced to the new Control Unit.
Requirement
The following preconditions apply for making a replacement:
• The new Control Unit is the same type as the Control Unit that was replaced.
• The new Control Unit has the same or more recent firmware version than that of the Control
Unit that was replaced.
Description
Unexpected machine motion caused when using an inappropriate Control Unit
Replacing Control Units of different types can result in incomplete or inappropriate/incorrect
converter settings. As a consequence, machines can unexpectedly move, e.g. speed
oscillation, overspeed or incorrect direction of rotation. Unexpected machine motion can result
in death, injury and/or material damage.
• In all cases not permitted according to the above precondition, you must recommission the
Unexpected machine motion caused by inappropriate/incorrect converter settings
Missing or incorrect converter settings can lead to unexpected operating states or machine
movements, e.g. a non-functioning EMERGENCY STOP or an incorrect direction of rotation. As
a consequence, machine components or devices can become damaged or death or bodily
injury may result.
• If possible, back up the settings of the Control Unit to be replaced by uploading them to an
• Transfer the settings of the Control Unit that was replaced per download to the new Control
• If you do not have a backup of the converter settings, commission the converter as new
• After replacing the Control Unit, you must check the function of the converter.
Procedure
1. Switch off the line voltage to the Power Module.
2. If being used, switch off the supply voltage for the digital outputs on the Control Unit.
306
WARNING
drive after replacing the Control Unit.
WARNING
external storage medium, e.g. a memory card.
Unit.
converter.
Converter with the control units CU240D-2
Operating Instructions, 10/2020, FW V4.7 SP13, A5E34262100B AH