Siemens SIMOTICS S-1FG1 Operating Instructions Manual page 138

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