Fault and warning codes
SINAMICS V20 Inverter
Operating Instructions, 07/2012, A5E03728167
241
Alarm Cause Remedy
• Load conditions and load steps must be
appropriate
• Fan must turn when inverter is running
A505
Inverter 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
Inverter temperature
signal lost
Inverter heat sink temperature signal
loss. Possible sensor fallen off.
Contact service department or change inverter.
A511
Motor overtemperature I
2
t
• Motor overloaded.
• Load cycles or load steps too high.
Independently of the kind of temperature
determination check:
• P0604 motor temperature warning threshold
• P0625 motor ambient temperature
• Check if name plate data is correct. If not,
perform 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.
A535
Braking resistor 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 overrun warning
Internal time slice overrun Contact service department.
A910
Vdc_max controller de-
activated
Occurs
• if main supply voltage (P0210) is
permanently too high.
• if motor is driven by an active load,
causing motor to go into
regenerative mode.
• at very high load inertias, when
ramping down.
Check the following:
• Input voltage must lie within range.
• Load must be match.
• In certain cases apply braking resistor.
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