Siemens SIMOTICS XP Series

Operation
8.6 Faults
1MB..1/2/3/4 - shaft heights 63 ... 355
106 Operating Instructions, 06/2020, A5E44455710A
8.6 Faults
8.6.1 Inspections in the event of faults
Natural disasters or unusual operating conditions, such as overloading or short circuit, are
faults that overload the machine electrically or mechanically.
Immediately perform an inspection after such faults.
Correct the cause of the fault as described in the respective remedial measures section.
Repair any damage to the machine.
8.6.2 Electrical faults
Note
If you are operating the motor with a converter, the operating instructions of the converter
must also be observed if electrical fault
s occur.
Table 8- 1 Electrical faults
↓ Motor fails to start
↓ Motor accelerates sluggishly
↓ Rumbling noise during startup
↓ Rumbling noise during operation
↓ High temperature rise during no-load operation
↓ High temperature rise with load
↓ High temperature rise of individual winding sections
Possible causes of faults
Remedial measures
X
X
X
X
Overload
Reduce the load.
X
Interrupted phase in the supply cable
Check the switches and cables.
X X X X Interrupted phase in the feeder cable
after switching on
Check the switches and cables.
X Mains voltage too low, frequency too
high
Check the power supply conditions.
X Mains voltage too high, frequency too
low
Check the power supply conditions.
X X X X X Stator winding incorrectly connected Check the winding connection in the terminal
box.
X X X X Winding short circuit or phase short
circuit in stator winding
Determine the winding resistances and insula-
tion resistances. Carry out repair work
after
consultation with the manufacturer.
X
Incorrect direction of rotation
Check the connection.