Siemens SINAMICS G115D

12.2.14 Faults, causes and remedies
Note
Faults and malfunctions that occur during the warranty period and requiring repair work on the
motor may only be remedied by Technical Support. If faults occur without a clearly identi󹪝able
cause, Siemens AG recommends the services of the Technical Support even after the warranty
period has elapsed.
If you need the help from the Technical Support, please have the following information ready:
• Rating plate data
• Nature and extent of the fault
• Suspected cause
Table 12-15 Faults, causes and remedies
Faults Causes Remedy
Bearing overheated. Too much grease in the bearing. Remove excess grease.
Bearing dirty. Replace the bearings.
Belt tension too high. Reduce belt tension.
Coupling forces pull or push. Align the motor precisely, correct the
coupling.
Coolant temperature outside the
permissible range.
Adjust the cooling air to the appropriate
temperature.
The bearing grease has a dark color. Check for bearing currents.
Not enough grease in the bearing. Lubricate as speci󹪝ed by the manufac‐
turer.
Incorrect motor mounting. Check the motor type of construction.
Bearing noise. Not enough grease in the bearing. Lubricate as speci󹪝ed by the manufac‐
turer.
Incorrect motor mounting. Check the motor type of construction.
Brinelling on the inner ring of the
bearing, e.g.caused when the mo‐
tor starts with a locked bearing.
Replace bearing, prevent vibration
when motor is stationary.
Motor running uneven‐
ly.
Coupling forces pull or push. Align the motor precisely, correct the
coupling.
Incorrect motor mounting. Check the motor type of construction.
Out of balance due to belt pulley or
coupling.
Balance precisely.
Motor mounting too loose. Check the mounting.
Motor does not acceler‐
ate.
Opposing torque too high. Check the motor torque and the load
torque.
Incorrect circuit. Observe the circuit diagram and rating
plate.
Additional information on the SIMOGEAR geared motor
12.2Speci󹪝c data motor
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA 463