Siemens 1PH728 Operating Instructions Manual page 50

Three-phase induction motor ac compact drives

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Faults

6.1 Fault diagnosis table

Table 6-2

Diagnosis table for electrical faults

Overview of electrical faults

Electrical fault characteristics

- Motor will not start up

- Motor starts up slowly

- Drumming noise during startup

- Drumming noise during operation

- Drumming noise in time with twice slip frequency

- High temperature rise at no load

- High temperature rise under load

- High temperature rise of individual winding sections

Apart from eliminating the cause of the fault (as described under "Remedial measures"), you must also rectify any damage

the motor may have suffered.

Take into account possible changes due to a rise in temperature.

[ID: 352.01]

Note:

If electrical faults occur, please refer to the manual

for the frequency converter.

Siemens AG Operating Instructions 2.02 1PH728

A5E00177602A AD

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