Replacing The Control Unit - Siemens SINAMICS G120 Operating Instructions Manual
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6.3
Replacing the Control Unit
Under the prerequisite that you have a memory card with a valid parameter set, when
required, you can replace a Control Unit for another one of the same type and the same
software version without having to re-commission the inverter.
To do so, proceed as follows:
Procedure when replacing a Control Unit
1. Switch-off the inverter power supply and wait 5 minutes until the device has discharged
2. Release the control cables from the Control Unit.
3. Remove the defective Control Unit from the Power Module.
4. Mount a new Control Unit on the Power Module.
5. Reconnect the control cables.
6. Insert a memory card with a valid parameter set into the new Control Unit.
7. Switch-on the inverter power supply again (the valid parameter set is then downloaded
8. Wait until the inverter has completely booted (RDY-LED and SF-LED are lit, BOP returns
9. Remove the memory card and acknowledge message F0395 (SF-LED is dark)
10. When switching-on the motor, check the direction of rotation and the response to control
11. For fail-safe inverters, also check the safety functions that have been set.
CU240S and CU240E Control Units, FW 3.2
Operating Instructions, 03/2009, A5E02440075B AA
itself.
into the inverter from the memory card)
to the standard display)
signals.
Servicing and maintenance
6.3 Replacing the Control Unit
217
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