Corrective maintenance
9.1 Replacing inverter components
Replacing a Control Unit with enabled safety function
Replacing a Control Unit with data backup on a memory card
If you use a memory card with firmware, after the replacement, you obtain a precise copy
(firmware and settings) of the replaced Control Unit.
You have a memory card with the actual settings of the Control unit to be replaced.
To replace the Control Unit, proceed as follows:
1. Disconnect the line voltage to the Power Module and (if installed) the external 24 V
supply or the voltage for the digital outputs of the Control Unit.
2. Remove the signal cables from the Control Unit.
3. Remove the defective Control Unit.
4. Remove the memory card from the old Control Unit and insert it in the new Control Unit.
5. Mount the new Control Unit on the Power Module. The new Control Unit must have the
same article number and the same or higher firmware version as the Control Unit that
was replaced.
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. Check what the inverter reports after loading.
– Alarm A01028:
The loaded settings are not compatible with the inverter.
Clear the alarm with p0971 = 1 and recommission the drive.
– Fault F01641:
Acknowledge the message.
Perform a
acceptance test, see section: Reduced acceptance test after
function expansions (Page 215).
You have replaced the Control Unit and transferred the safety function settings from the
memory card to the new Control Unit.
Converter with control units CU240D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34262100B AB
239
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