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6.2
Fault causes and remedial measures for the motor
Possible faults
Fault
Motor does not start
Motor starts slowly
Humming sound when starting
Humming sound in operation
High temperature rise under no-load operation
High temperature rise under load
High temperature rise of individual winding sections
Uneven running
Grinding sound, running noise
Radial vibrations
Axial vibrations
Fault causes and remedial measures
No.
Fault cause
A
Overload
B
Interrupted phase in the converter line
supply cable or motor winding
C
Interrupted phase in the converter line
supply cable after switching on
D
Converter output voltage too high,
frequency too low
F
Winding short-circuit or phase short-
circuit in stator winding
I
Heat dissipation impeded by deposits
Cooling air inlet or outlet is blocked by
foreign bodies
J
Insufficient shielding for motor and/or
encoder cable
K
Excessive drive controller gain
L
Rotating parts are grinding
Foreign bodies inside the motor
Bearing damage
M
Rotor not balanced
N
Rotor out of true, shaft bent
O
Poor alignment
P
Coupled machine not balanced
Q
Shocks from coupled machine
R
Fault originating from the gearbox
If the fault still cannot be resolved after taking the measures stated above, please contact the manufacturer or the Siemens
Service Center.
SINAMICS S200 PROFINET servo drive system with SIMOTICS S-1FL2
A5E52388930A AA, 07/2023
Fault cause (see the table "Fault causes and remedial measures")
A
B
A
C
F
C
F
A
C
F
D
A
C
F
Remedial measures
Reduce load
Check the converter and converter line supply cable, measure the
winding resistance and insulation resistance, repair after consultation
with manufacturer
Check the converter, converter line supply cable, and the winding
resistance
Check the settings on the converter, perform automatic motor
identification
Measure the winding resistance and insulation resistance, repair after
consultation with the manufacturer, replace the motor if required
Clean the surface of the servo drive system and ensure that the cooling
air can flow in and out unimpeded
Remove the things that block the inlet or outlet and ensure that the
cooling air can flow in and out unimpeded
Check the shielding and grounding
Adjust the controller
Determine cause and adjust parts
Replace the motor
For low or medium inertia motors, replace the motor; for high inertia
motors, replace the bearings
Replace the motor
Consult the manufacturer
Align motor set, check coupling
Re-balance coupled machine
Check coupled machine
Adjust or repair the gearbox
I
I
J
K
L
M
N
O
P
R
O
Q
R
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