Replacing The Control Unit - Siemens SINAMICS G120 CU240B-2 Operating Instructions Manual

Component replacement
8.2

Replacing the Control Unit

We recommend that you back up the Control Unit parameters externally once
commissioning has been completed. The options are as follows:
1. Back up using the commissioning tool STARTER on your PG/PC.
2. Back up your parameters on a memory card in the inverter.
3. Back up in the Operator Panel.
If you do not back up your parameters, you have to recommission the drive when you
replace the Control Unit.
Procedure for replacing a Control Unit with a memory card
● Disconnect the line voltage of the Power Module and (if installed) the external 24 V
● Remove the signal cables of the Control Unit.
● Remove the defective CU from the Power Module.
● Plug the new CU on to the Power Module. The new CU must have the same order
● Remove the memory card from the old Control Unit and insert it in the new Control Unit.
● Reconnect the signal cables of the Control Unit.
● Connect up the line voltage again.
● The inverter adopts the settings from the memory card, saves them (protected against
● Switch on the motor and check the function of the drive.
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
E:4 S C-V3N97875
s
SINAMICS
MICRO MEMORY CARD
6 S L 3 2 5 4 - 0 A M 0 0 - 0 A A 0
supply or the voltage for the relay outputs DO 0 and DO 2 of the Control Unit.
number and the same or a higher firmware version as the CU that was replaced.
power failure) in its internal parameter memory, and switches to "ready to start" state.
without
Replacing Control Unit
Replacing Control Unit with a Control Unit of a
(e.g. replacing a CU230P-2 with a CU240E-2 DP)
Service and maintenance
8.2 Replacing the Control Unit
a memory card
different type
239