TAM 00624
17
DS 100 – 200
03 / 2005
Three-phase synchronous motor, air-cooled
English
Fault Cause
Recovery
Running noises
Foreign matter in motor
Damaged bearing
Repair by motor manufacturer
Repair by motor manufacturer
Temperature rise in motor
Motor temperature monitoring
unit responds
Drive overloaded
Brake does not release fully -
scraping brake
Air cooling not active.
Fan wheel blocked
Air supply inadequate due to …
- Shortcircuit in air flow (exhaust
air taken in again)
- Filter urgently requires
cleaning
- Deposits in cooling channels
Check motor load and
compare with nameplate
Repair by motor manufacturer
Check and, if necessary,
switch on
Remove foreign matter
Check air circuit and…
- change air flow arrangement
- check and, if necessary,
clean
- check and, if necessary,
clean
Current consumption too high,
motor torque too low
Indexing angle incorrect
Check indexing angle and
adjust if necessary
5 Inspection and maintenance
Working on the electric motor:
Work must not be carried out on the electric motor until the motor has come to a
standstill, is de-energized, depressurised and has cooled. All connections, such as
screw connections, that were loosened must be tightened again after the inspection
or maintenance work.
When carrying out work on the motor, please observe the technical instructions and
notes in the respective chapters in these Commissioning and Manitenance
Instructions.
When carrying out maintenance work, observe all safety instructions which also apply
for the commissioning of the motor (comp. Section 4.1)
Attention: the optional holding brake does not have a securing function when work is
being carried out on the motor (e.g. holding loads)!
5.1 Inspection
Depending on the pollution severity on site, cleaning will have to be carried out regularly on
surfaces, air channels and filters to guarantee the continuous dissipation of heat loss.
If equipped with the optional brake, certain abrasion limits are specified (e.g. max. permitted
ventilation slot, limited emergency braking). The degree of abrasion must be checked on a regular
basis. The brake must be replaced on reaching the permitted abrasion limit (comp. Section 5.2)
If equipped with the optional shaft sealing ring, this must be checked regularly to ensure that it is
functioning correctly (leaks).
