Fault and warning codes
SINAMICS V20 Inverter
240 Operating Instructions, 07/2012, A5E03728167
Fault Cause Remedy
If using a specific torque / speed range, check
parameters:
- P2182 (threshold frequency 1)
- P2183 (threshold frequency 2)
- P2184 (threshold frequency 3)
- P2185 (upper torque threshold 1)
- P2186 (lower torque threshold 1)
- P2187 (upper torque threshold 2)
- P2188 (lower torque threshold 2)
- P2189 (upper torque threshold 3)
- P2190 (lower torque threshold 3)
- P2192 (delay time for permitted deviation)
Alarms
If an alarm is activated the alarm icon is immediately lit and then the display shows the
alarm code proceeded by "A".
NOTICE
Note that alarms cannot be acknowledged. They are cleared automatically once the
warning has been rectified.
Alarm code list
Alarm Cause Remedy
A501
Current limit
• Motor power does not correspond to
the inverter power
• Motor leads are too long
• Earth faults
Check the following:
See F1.
A502
Overvoltage limit
Overvoltage limit is reached. This
warning can occur during ramp down, if
the Vdc controller is disabled (P1240 =
0).
If this warning is displayed permanently, check
inverter input voltage.
A503
Undervoltage limit
• Main supply failed.
• Main supply and consequently DC-
link voltage (r0026) below specified
limit.
Check main supply voltage.
A504
Inverter overtemperature
Warning level of inverter heat sink
temperature, warning level of chip
junction temperature, or allowed change
in temperature on chip junction is
exceeded, resulting in pulse frequency
reduction and / or output frequency
reduction (depending on
parameterization in P0290).
Note:
r0037 = 0: Heat sink temperature
r0037 = 1: Chip junction temperature (includes heat
sink)
Check the following:
• Ambient temperature must lie within specified
limits
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