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Table 8- 1
Motor does not start up
Motor starts up slowly
Rumbling noise during startup
Rumbling noise during operation
Overheating during no-load
operation
Overheating with load
Overheating of individual
winding sections
Uneven running
Grinding sound, running noise
Radial vibrations
Axial vibrations
Water is escaping
Table 8- 2
Key to causes of faults and remedial measures
No.
Cause of fault
A
Overload
B
Interruption of a phase in the supply
cable
C
Interruption of a phase in the supply after
switching on
D
Converter output voltage too high,
frequency too low
E
Stator winding incorrectly connected
F
Winding short circuit or phase short
circuit in stator winding
G
Cooling water not connected / switched
off
Water connection / pipes defective
H
Cooling water flow rate too low
Inlet temperature too high
I
Heat dissipation impeded by deposits
Cooling air inlet/outlet is blocked by
foreign bodies
Fan motor does not start up
J
Insufficient shielding for motor and/or
encoder cable
K
Excessive drive controller gain
SIMOTICS A-1FV5/1PV5 synchronous/induction motors
Operating Instructions, 03/2014, 610.45002.40
Possible faults
Fault
A B
A
A
A
Reduce load
Check frequency converter and supply cables
Check frequency converter and supply cables
Check the settings on the frequency converter, perform automatic motor
identification
Check winding connections
Measure the winding resistances and insulation resistances, repair after
consultation with manufacturer
Check cooling water connection / switch on cooling water
Locate leaks and seal as necessary, or consult the manufacturer
Increase cooling water flow rate
Set correct inlet temperature
Clean the surface of the drives and ensure that the cooling air can flow
in and out unimpeded
Remove the block and ensure that the cooling air can flow in and out
unimpeded
Make sure that the fan motor works properly
Check the shielding and grounding
Adjust the controller
Cause of fault (see key table)
E
C
E F
C
E F
C
E F
D
G
H I
C
G
H I
E F
Remedial measures
Operation
8.4 Faults
J K
L
M N O P
R
O
Q R
S
51
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