Alarms - Siemens SINAMICS V20 Operating Instructions Manual

9.2

Alarms

If an alarm is activated the alarm icon
alarm code proceeded by "A".
Note
Note that alarms cannot be acknowledged. They are cleared automatically once the warning
has been rectified.
Disabling converter stop reaction for alarms
You can disable stop reaction for three selected alarms or all alarms:
● Use P2100 to select up to 3 alarms and use P2101 to disable stop reaction for the
selected alarms.
● Use P2113 to disable stop reaction for all alarms.
For more information, see the description of P2100, P2101, and P2113 in Section
"Parameter list (Page 198)".
Alarm code list
Alarm Cause
A501
Motor power does not correspond to the convert-
•
Current limit er power
Motor leads are too long
•
Earth faults
•
Small motors (120 W) under FCC and light load
•
may cause a high current
A502 Overvoltage limit is reached. This warning can occur
during ramp down, if the Vdc controller is disabled
Overvoltage
(P1240 = 0).
limit
A503
Main supply failed.
•
Undervoltage
Main supply and consequently DC-link voltage
•
limit
(r0026) below specified limit.
A504 Warning level of converter heat sink temperature,
warning level of chip junction temperature, or allowed
Converter
change in temperature on chip junction is exceeded,
overtempera-
resulting in pulse frequency reduction and / or output
ture
frequency reduction (depending on parameterization
in P0290).
SINAMICS V20 Converter
Operating Instructions, 10/2019, A5E34559884-012
shows immediately and then the display shows the
Remedy
See F1.
Use V/f operation for very small motors
If this warning is displayed permanently, check
converter input voltage.
Check main supply voltage.
Note:
r0037[0]: Heat sink temperature
r0037[1]:
Chip junction temperature (includes heat sink)
Check the following:
Surrounding temperature must lie within speci-
•
fied limits
Load conditions and load steps must be appro-
•
priate
Fan must turn when converter is running
•
Faults and alarms
9.2 Alarms
341