Alarms, faults and system messages
8.6 List of alarms and faults
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
283
Number Cause
Remedy
A30920
Temperature sensor fault
Check that the sensor is connected correctly.
F31118
Speed difference outside tolerance For an HTL/TTL encoder, the speed difference has exceeded the value in
p0492 over several sampling cycles.
•
Check tachometer feeder cable for interruptions.
•
Check grounding of the tachometer shielding.
•
Increase the maximum speed difference per sampling cycle (p0492).
A31418
Speed difference per sampling rate
exceeded
F31905
Parameterization error
Check whether the connected encoder type matches the encoder that
has been parameterized.
For further information, please refer to the List Manual.
Overview of the manuals (Page 343)