Siemens SINUMERIK 808D ADVANCED Diagnostic Manual page 543

Fault
F30005: Power unit: Over‐
load I t
2
Reaction: OFF2
Acknowledgement: IMMEDI‐
ATELY
F30011: Line phase failure in
main circuit
Reaction: OFF2
Acknowledgement: IMMEDI‐
ATELY
F30015: Phase failure motor
cable
Reaction: OFF2
Acknowledgement: IMMEDI‐
ATELY
F30021: Ground fault
Reaction: OFF2
Acknowledgement: IMMEDI‐
ATELY
Diagnostics Manual
Diagnostics Manual, 06/2015, 6FC5398-6DP10-0BA2
Cause
The power unit was overloaded.
● The permissible rated power unit
current was exceeded for an
inadmissibly long time.
● The permissible load duty cycle was not
maintained.
At the power unit, the DC link voltage ripple
has exceeded the permissible limit value.
Possible causes:
● A line phase has failed.
● The 3 line phases are inadmissibly
unsymmetrical.
● The fuse of a phase of a main circuit has
ruptured.
● A motor phase has failed.
A phase failure in the motor feeder cable
was detected.
The signal can also be output in the follow‐
ing case:
The motor is correctly connected, however
the closed-speed control is instable and
therefore an oscillating torque is generated.
Power unit has detected a ground fault.
● Ground fault in the power cables.
● Winding fault or ground fault at the
motor.
SINAMICS V70 faults and alarms
7.2 Common faults and alarms
Remedy
● Reduce the continuous load.
● Adapt the load duty cycle.
● Check the motor and power unit rated
currents.
● Check the main circuit fuses.
● Check whether a single-phase load is
distorting the line voltages.
● Check the motor feeder cables.
● Check the motor feeder cables.
● Check the speed controller settings.
● Check the power cable connections.
● Check the motor.
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