Alarm list
Alarm codes are stored in parameter r2110 and can be readout from there.
Alarm Possible causes Diagnose & Remedy
A0501
Current limit value
● The motor power rating does not
correspond to the inverter power rating
● Motor cables are too long
● Ground fault
● Does the motor power rating (P0307)
match the inverter power rating (r0206)?
● Are the limit values for the cable lengths
maintained?
● Does the motor cable or motor have a
short-circuit or ground fault?
● Do the motor parameters correspond to
those of the motor being used?
● Stator resistance value (P0350) correct?
● Is the motor overloaded or is the rotor
locked (cannot rotate)?
● Ramp-up time P1120 too low
A0502
Overvoltage limit value
The overvoltage limit value has been reached
(The actual value of the DC link voltage r0026
exceeds limit)
● Is the DC link voltage controller (Vdc_max
controller) de-activated (refer to
parameter P1240)?
● Short ramp times and/or large flywheel
masses (moment of inertia)?
A0503
Undervoltage Limit
● Line supply has failed.
● Line voltage and therefore also the DC link
voltage (r0026) below the defined limit
value (refer to parameter r0026).
Check supply voltage (P0210)
A0504
Inverter overtemperature
Alarm threshold of the inverter heatsink
temperature was exceeded. This results in a
reduction of the pulse frequency and/or the
output frequency (dependent on the
parameterization in (P0610).
● Is the ambient temperature within the
permissible limits?
● Are the load and load duty cycle within the
permissible limits?
A0505
Inverter I
2
T
● Overload alarm limit P0294 is exceeded
(refer to utilization r0036)
● The pulse frequency and/or the output
frequency is reduced as a function of the
setting of parameter P0290.
Decrease inverter duty cycle
A0506
Inverter duty cycle
Heatsink temperature and thermal junction
model are outside of allowable range
Check if duty cycle is within specified limits
A0511
Motor overtemperature I
2
T
● Motor overloaded
● load duty cycle is exceeded
Is P0611(motor I2t time constant) value
setting suitable?
A0541
Motor data identification
active
Motor data identification (P1910) selected or
running
Wait until motor identification is finished
A0571
Auto restart after fault
present
Auto restart function already activated Check the setting of P1210
A0600
RTOS data loss alarm
Time slice overflow was identified
Troubleshooting
SINAMICS V10
112 Operating Instructions, 08/2011, A5E03453178 (this is not an order number)
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