8.10.2
Electrical faults
Note
If you are operating the motor with a converter, the operating instructions of the converter must
also be observed if electrical faults 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 af‐
ter 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 cir‐
cuit in stator winding
Determine the winding resistances and insulation
resistances. Carry out repair work after consulta‐
tion with the manufacturer.
X
Incorrect direction of rotation
Check the connection.
8.10.3
Mechanical faults
The following table shows the possible causes of and remedial measures for mechanical faults.
Table 8-2
Mechanical faults
↓ Grinding noise
↓ Overheating
↓ Radial vibrations
↓ Axial vibrations
Possible causes of faults
Remedial measures
X
Rotating parts are grinding
Establish the cause and realign the parts.
X
Rotor not balanced
Decouple the rotor and then rebalance it.
X
Rotor out of true, shaft bent
Contact the Service Center.
Operation
8.10 faults
SIMOTICS FD 1LH1
118
Operating Instructions 01/2019
Содержание SIMOTICS FD 1LH1
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Страница 28: ...Description SIMOTICS FD 1LH1 28 Operating Instructions 01 2019 ...
Страница 72: ...Assembly 5 5 Connecting the cooling water supply SIMOTICS FD 1LH1 72 Operating Instructions 01 2019 ...
Страница 122: ...Operation 8 10 faults SIMOTICS FD 1LH1 122 Operating Instructions 01 2019 ...
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Страница 164: ...Service and Support SIMOTICS FD 1LH1 164 Operating Instructions 01 2019 ...
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