Servicing and maintenance
6.2 Replacing the Power Module
CU240S and CU240E Control Units, FW 3.2
216 Operating Instructions, 03/2009, A5E02440075B AA
6.2 Replacing the Power Module
When required, the Power Module can be replaced by an identical module (the same type
and the same version) without having to recommission it.
If you replace a Power Module by one of the same type and the same format, however with
a higher power rating, then re-parameterization is not absolutely necessary and you can
acknowledge message F0395. However, this can have a negative impact on the open-loop /
closed-loop control accuracy.
If you replace a Power Module by one with the same type and with a lower power rating,
then then drive must be re-commissioned.
CAUTION
Before you replace the Power Module, ensure that all of the parameter settings are saved
in the EEPROM of the Control Unit (refer to P0014 or P0971).
Replacing a Power Module
1. Switch-off the Power Module power supply and wait 5 minutes until the device has
discharged itself.
2. Disconnect the Power Module connecting cable
3. Remove the Control Unit from the Power Module
4. Replace the Power Module
5. Mount the Control Unit onto the new Power Module
6. Connect the Power Module connecting cable
7. Switch-on the Power Module power supply again
Before switching-on the power supply again, ensure that the new Power Module is
correctly installed and connected.
8. Wait until the inverter has completely booted (RDY-LED and SF-LED are lit, BOP returns
to the standard display)
9. Acknowledge message F0395 (SF-LED off)
10. When switching-on the motor, check the direction of rotation and the response to control
signals.
11. For fail-safe inverters, also check the safety functions that have been set.
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