Additional information on the SIMOGEAR geared motor
11.2 Specific data motor
SINAMICS G115D distributed drive
422
Operating Instructions, 12/2020, FW V4.7 SP13, A5E48681219B-002
Faults
Causes
Remedy
Insufficient ventilation.
Check the cooling air ducts, check the direc-
tion of rotation
Cooling air ducts dirty.
Clean cooling air ducts.
Coolant temperature outside
the permissible range.
Adjust the cooling air to the appropriate
temperature.
Significant drop in
speed.
Opposing torque too high.
Check the motor torque and the load torque.
Line voltage too low.
Check the line supply.
Phase interruption.
Check the connection to the line supply.
Incorrect circuit.
Observe the circuit diagram and rating plate.
Overload.
Compare data on the rating plate.
Protective equipment
trips.
Phase interruption.
Check the connection to the line supply.
Incorrect circuit.
Observe the circuit diagram and rating plate.
Overload.
Compare data on the rating plate.
Switching frequency too high. Observe the rated duty.
Winding and terminal short-
circuit.
Measure the insulation resistance.
Starting time is exceeded.
Check the run-up conditions.
11.2.15
General notes about maintenance
WARNING
Unintentional starting of the drive unit
Secure the drive unit to prevent it from being started up unintentionally.
Attach a warning notice to the start switch.
NOTICE
Improper maintenance
Only authorized qualified personnel may perform the maintenance and servicing. Only
original parts supplied by Siemens AG may be installed.
Only qualified personnel may perform the inspection, maintenance and servicing work. Note
the information in the general notes and safety information (Page 404).
