General Notes About Maintenance - Siemens SINAMICS G115D Operating Instructions Manual

Faults
Significant drop in
speed.
Protective equipment
trips.
11.2.15

General notes about maintenance

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 372).
SINAMICS G115D distributed drive
Operating Instructions, 09/2020, FW V4.7 SP13, A5E48681219B
Causes
Switching frequency too high.
Insufficient ventilation.
Cooling air ducts dirty.
Coolant temperature outside the
permissible range.
Opposing torque too high.
Line voltage too low.
Phase interruption.
Incorrect circuit.
Overload.
Phase interruption.
Incorrect circuit.
Overload.
Switching frequency too high.
Winding and terminal short-circuit.
Starting time is exceeded.
WARNING
Additional information on the SIMOGEAR geared motor
Remedy
Observe the rated duty.
Check the cooling air ducts, check the
direction of rotation
Clean cooling air ducts.
Adjust the cooling air to the appropri-
ate temperature.
Check the motor torque and the load
torque.
Check the line supply.
Check the connection to the line sup-
ply.
Observe the circuit diagram and rating
plate.
Compare data on the rating plate.
Check the connection to the line sup-
ply.
Observe the circuit diagram and rating
plate.
Compare data on the rating plate.
Observe the rated duty.
Measure the insulation resistance.
Check the run-up conditions.
11.2 Specific data motor
389