Alarms; Alarm Code List - Siemens SINAMICS V20 Operating Instructions Manual

8.2

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.

Alarm code list

Alarm
A501
Current limit
A502
Overvoltage limit
A503
Undervoltage limit
A504
Inverter overtempera-
ture
A505
Inverter I t
2
A506
IGBT junction temper-
ature rise warning
A507
Inverter temperature
signal lost
SINAMICS V20 Inverter
Operating Instructions, 09/2014, A5E34559884
Cause
Motor power does not correspond to the
•
inverter power
Motor leads are too long
•
Earth faults
•
Small motors (120 W) under FCC and
•
light load may cause a high current
Overvoltage limit is reached. This warning
can occur during ramp down, if the Vdc
controller is disabled (P1240 = 0).
Main supply failed.
•
Main supply and consequently DC-link
•
voltage (r0026) below specified limit.
Warning level of inverter heat sink tempera-
ture, warning level of chip junction tempera-
ture, or allowed change in temperature on
chip junction is exceeded, resulting in pulse
frequency reduction and / or output fre-
quency reduction (depending on parameter-
ization in P0290).
Warning level exceeded, current will be
reduced if parameterized (P0610 = 1).
Overload warning. Difference between heat
sink and IGBT junction temperature ex-
ceeds warning limits.
Inverter heat sink temperature signal loss.
Possible sensor fallen off.
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
inverter 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 inverter is running
•
Check that load cycle lies within specified limits.
Check that load steps and shock loads lie within
specified limits.
Contact service department or change inverter.
Faults and alarms
8.2 Alarms
289