Siemens SIMOTICS A 1FU8, Operating Instructions Manual

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Operation
8.3 Fault tables
1FU8
Operating Instructions, 02/2016, 5 610 70000 02 000
75
8.3 Fault tables
Note
Before removing any faults, please read the information in Chapter Safety information
(Page 13).
Note
If you operate the motor with a converter, and an electrical fault occurs, then also observe
the information in the converter operating instructions.
The tables below list general faults caused by mechanical and electrical influences.
Table 8- 1 Electrical influences
Electrical fault characteristics
↓ Machine will not start up
↓ Machine starts up reluctantly
↓ Rumbling noise during startup
↓ Rumbling noise during operation
↓ Overheating during no-load operation
↓ Overheating when under load
↓ Overheating of individual winding sections
Possible causes of faults
Remedial measures
1)
X X X X Overload Reduce load
X Interruption of a phase in the supply line Check switches and supply lines
X X X X X Interruption of a phase in the supply line
after switching on
Check switches and supply lines
X X Supply voltage too low, frequency too
high
Check power supply conditions
X Supply voltage too high, frequency too
low
Check power supply conditions
X X X X X Stator winding incorrectly connected Check winding connections
X X X X Winding short circuit or phase short cir-
cuit in stator winding
Measure the winding resistances and insulation
resistances, repair after consultation with manu-
facturer
X Incorrect direction of rotation of axial fan Check connections
(1) As well as eliminating the cause of the fault (as described under "Remedial measures"),
you must also rectify any damage the machine may have suffered.