Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB
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Alarms, faults and system messages
9
The converter has the following diagnostic types:
● LED
The LED at the front of the converter immediately informs you about the most important
converter states right at the converter.
● Alarms and faults
The converter signals alarms and faults via the fieldbus, the terminal strip (when
appropriately set), on a connected operator panel or STARTER.
Alarms and faults have a unique number.
If the converter no longer responds
Due to faulty parameter settings, e.g. by loading a defective file from the memory card, the
converter can adopt the following condition:
● The motor is switched off.
● You cannot communicate with the converter, either via the Operator Panel or other
interfaces.
In this event proceed as follows:
● Remove the memory card if one is inserted in the converter.
● Repeat the power on reset until the converter outputs fault F01018:
– Switch off the converter supply voltage.
– Wait until all LEDs on the converter go dark. Now switch on the converter supply
voltage again.
● If the converter signals fault F01018, repeat the power on reset one more time.
● The converter must now have been restored to its factory settings.
● Recommission the converter.
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