Table 8-1
Electrical faults
↓ Motor fails to start
↓ Motor accelerates sluggishly
↓ Humming noise when starting
↓ Humming noise in operation
↓ High temperature rise during no-load operation
↓ High temperature rise under load
↓ High temperature rise of individual winding sections
Possible causes of faults
Remedial measures
X
X
Rotor (partially) demagnetized
Contact the Service Center.
X
X
X
X
Overload
Reduce the load.
X
Interruption of a phase in the feeder
cable
Check the frequency converters and feeder cables.
X
X
X
X
Interrupted phase in the feeder ca‐
ble after switching on
Check the frequency converters and feeder cables.
X
X
X
X Winding short circuit or inter-phase
short circuit in stator winding
Determine the winding resistances and insulation re‐
sistances. Contact the Service Center.
X
Converter output voltage too high,
frequency too low
Check the settings at the frequency converter and
perform the automatic motor identification.
X
X
Cooling water not connected
Cooling water supply switched off
Water connection / pipes defective
Check the cooling water connection. Switch on the
cooling water supply.
Find the leak and seal it. Contact the Service Center.
X
X
Cooling water flow rate too low
Inlet temperature too high
Increase the cooling water flow.
Set the correct upstream temperature.
8.8.3
Mechanical faults
Table 8-2
Mechanical faults
↓ Grinding noise
↓ 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
Contact the Service Center.
X
Rotor out of true, shaft bent
Contact the Service Center.
X
X Poor alignment
Align the machine set and check the coupling.
1)
X
Coupled machine not balanced
Rebalance the coupled machine.
X Shocks from coupled machine
Examine the coupled machine.
X
X Resonance with the foundation
Stabilize the foundation after prior discussion.
X
X Changes in foundation
Determine the cause of the changes and, if necessa‐
ry, rectify. Realign the machine.
1)
Take into account possible changes which may occur during overheating.
Operation
8.8 Faults
SIMOTICS HT Series HT-direct 1FW4...1......A
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Operating Instructions 11/2018
Содержание SIMOTICS HT Series
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Страница 10: ...Table of contents SIMOTICS HT Series HT direct 1FW4 1 A 10 Operating Instructions 11 2018 ...
Страница 26: ...Description SIMOTICS HT Series HT direct 1FW4 1 A 26 Operating Instructions 11 2018 ...
Страница 62: ...Assembly 5 6 Insulated bearings SIMOTICS HT Series HT direct 1FW4 1 A 62 Operating Instructions 11 2018 ...
Страница 108: ...Maintenance 9 2 Corrective Maintenance SIMOTICS HT Series HT direct 1FW4 1 A 108 Operating Instructions 11 2018 ...
Страница 116: ...Disposal 11 7 Disposal of components SIMOTICS HT Series HT direct 1FW4 1 A 116 Operating Instructions 11 2018 ...
Страница 118: ...Service and Support SIMOTICS HT Series HT direct 1FW4 1 A 118 Operating Instructions 11 2018 ...
Страница 122: ...Quality documents SIMOTICS HT Series HT direct 1FW4 1 A 122 Operating Instructions 11 2018 ...
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