Siemens SIMOTICS XP 1LA5 Compact Operating Instructions page 59

Table 8-1 Electrical influences
↓
↓
↓
↓
↓
↓
X X X X
X
X X X X X Interruption of a phase in
X X
X
X X X X
X X X
X
(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.
Explosion-protected machines
56100000002002, 01/2016
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
Overload
Interruption of a phase in
the supply line
the supply line after switch-
ing on
Supply voltage too low,
frequency too high
Supply voltage too high,
frequency too low
X Stator winding incorrectly
connected
X Winding short circuit or
phase short circuit in stator
winding
Incorrect direction of rota-
tion of axial fan
Remedial measures
Reduce load
Check switches and supply lines
Check switches and supply lines
Check power supply conditions
Check power supply conditions
Check winding connections
Measure the winding resistanc-
es and insulation resistances,
repair after consultation with
manufacturer
Check connections
Operation
1)
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