Replace Control Unit - Siemens SINAMICS G120 Original Instructions Manual

10.2

Replace Control Unit

Risk of electric shock from touching live parts
230 V AC may be in place on terminals DO 0 and DO 2 of the control unit's relay output
independently of the voltage status of the power module. Touching the contacts may result
in an electrical shock.
Protective measures before exchanging the control unit:
1. Switch the contacts off-circuit.
2. Secure the power supply against being unintentionally switched on again.
3. Check that the cabinet is de-energized.
Replacing a Control Unit with data backup on a memory card
Procedure
Proceed as follows to exchange the Control Unit:
1. Disconnect the line voltage to the Power Module and (if installed) the external 24 V
2. Remove the signal cables from the Control Unit.
3. Remove the defective Control Unit.
4. Mount the new Control Unit onto the Power Module. The new Control Unit must have the
5. Remove the memory card from the old Control Unit and insert it in the new Control Unit.
6. Reconnect the signal cables of the Control Unit.
7. Connect up the line voltage again.
8. The inverter loads the settings from the memory card.
9. After loading, check whether the inverter outputs Alarm A01028.
You have successfully replaced the Control Unit.
Inverter with CU230P-2 Control Units
Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
DANGER
supply or the voltage for the digital outputs of the Control Unit.
same order number and the same or a higher firmware version as the Control Unit that
was replaced.
– Alarm A01028:
The settings that have been loaded are not compatible with the inverter.
Clear the alarm with p0971 = 1, and recommission the drive.
– No alarm A01028:
The inverter accepts the settings that have been loaded.
Corrective maintenance
10.2 Replace Control Unit
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