Siemens SINAMICS V20

Faults and alarms
9.2 Alarms
SINAMICS V20 Converter
342 Operating Instructions, 10/2019, A5E34559884-012
Alarm
Cause
Remedy
A505
Converter I
2
t
Warning level exceeded, current will be reduced if
parameterized (P0610 = 1).
Check that load cycle lies within specified limits.
A506
IGBT junction
temperature
rise warning
Overload warning. Difference between heat sink and
IGBT junction temperature exceeds warning limits.
Check that load steps and shock loads lie within
specified limits.
A507
Converter
temperature
signal lost
Converter heat sink temperature signal loss. Possible
sensor fallen off.
Contact service department or change converter.
A511
Motor over-
temperature
I
2
t
• Motor overloaded.
• Load cycles or load steps too high.
Independently of the kind of temperature determi-
nation check:
• P0604 motor temperature warning threshold
• P0625 motor surrounding temperature
• Check if name plate data is correct. If not, per-
form quick commissioning. Accurate equivalent
circuit data can be found by performing motor
identification (P1900 = 2).
• Check if motor weight (P0344) is reasonable.
Change if necessary.
• With P0626, P0627, and P0628 the standard
overtemperature can be changed, If the motor
is not a SIEMENS standard motor.
A523
Output cur-
rent ripple too
high
The calculated output ripple level has exceeded the
safe threshold. This is commonly caused by one of
the following reasons:
• Loss of one of the output phases
• High motor vibration
• Check the output wiring.
• Check the mechanical vibration of the motor.
A535
Braking resis-
tor overload
The braking energy is too large.
The braking resistor is not suited for the application.
Reduce the braking energy.
Use a braking resistor with a higher rating.
A541
Motor data
identification
active
Motor data identification (P1900) selected or running.
A600
RTOS over-
run warning
Internal time slice overrun Contact service department.