Siemens SINAMICS V90 Operating Instructions Manual page 340

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Diagnostics
11.2 List of faults and alarms
Fault
F30015: Phase failure motor
cable
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
F30021: Ground fault
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
F30027: Precharging DC link
time monitoring
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
F30036: Internal overtemper-
ature
Reaction: OFF2
Acknowledgement:
IMMEDIATELY
340
Cause
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 generat-
ed.
Power unit has detected a ground fault.
Ground fault in the power cables.
Winding fault or ground fault at the
motor.
The power unit DC link was not able to
be pre-charged within the expected
time.
There is no line supply voltage con-
nected.
The line contactor/line side switch has
not been closed.
The line supply voltage is too low.
The pre-charging resistors are over-
heated as there were too many pre-
charging operations per time unit
The pre-charging resistors are over-
heated as the DC link capacitance is
too high.
The pre-charging resistors are over-
heated.
The pre-charging resistors are over-
heated as the line contactor was closed
during the DC link fast discharge
through the Braking Module.
The DC link has either a ground fault or
a short-circuit.
The pre-charging circuit is possibly
defective.
The temperature inside the drive converter
has exceeded the permissible temperature
limit.
Insufficient cooling, fan failure.
Overload.
Surrounding temperature too high.
Remedy
Check the motor feeder cables.
Check the speed controller settings.
Check the power cable connections.
Check the motor.
Check the line supply voltage at the input
terminals.
Check whether the fan is running.
Check the fan elements.
Check whether the surrounding tempera-
ture is in the permissible range.
Notice:
This fault can only be acknowledged once the
permissible temperature limit minus 5 K has
been fallen below.
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 09/2016, A5E36037884-002

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