Siemens SIMOTICS S-1FG1, Operating Instructions Manual

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Faults
SIMOTICS S-1FG1 servo geared motor
136
Operating Instructions, 07/2019, A5E47360747B AA
Table 8- 1 Possible faults on the 1FG1 servo geared motor
Fault Cause of fault (see key table)
Geared motor only starts with difficulty or not at all A B F S GA GR
Droning motor noise on startup / during operation A F
Unusual noise at the gearbox A GA GB GC GD GE GH
Unusual noise at converter. L GC GE
Uneven running J K
High motor temperature rise in no-load operation D I
High motor temperature rise under load A C J
High motor temperature rise of individual winding
sections
F
Gearbox overheats. I GA GR GS GC
Vibrations O P Q
Oil escapes. GA GI GK GL GM GN GO
Oil leak at the gearbox vent. GA GP
Output shaft does not turn when the motor is running. GT
Excessive clearance at drive input and output. GU GV
Table 8- 2 Key to causes of faults, and remedial measures
No. Cause of fault How to remedy
A Overload Reduce load
B Interrupted phase in the supply ca-
ble/motor winding
Check the converter and supply cables/measure the winding resistanc-
es and insulation resistances, repair after consultation with manufactur-
er
C Interruption of a phase in the supply ca-
ble after switching on
Check the converter and supply cables/check the winding resistances
D Converter output voltage too high, fre-
quency too low
Check the converter settings, perform automatic motor identification.
F Winding short circuit or phase short circuit
in stator winding
Measure the winding resistances and insulation resistances, and repair
after consultation with manufacturer
I Heat dissipation impeded by deposits Clean the surface of the drives. Ensure that the cooling air can flow in
and out unimpeded.
J Insufficient shielding for motor and/or
encoder cable
Check the shielding and grounding
K Drive controller gain too high Adjust the controller.
L Rotating parts are grinding Determine cause and adjust parts
Foreign bodies in the motor Send to manufacturer for repair
Bearing damage Send to manufacturer for repair
N Rotor out of true, shaft bent Consult the manufacturer
O Poor alignment Align machine set, check coupling.
P Coupled machine not balanced Rebalance coupled machine.
Q Mechanical shocks from coupled machine Inspect coupled machine.
R Uneven gearbox operation
Repair the gearbox.