Operation
9.1 Faults
1PH1 main motors
Equipment Manual, 09/2021, A5E51077676A-AA
97
Code to causes of faults and remedial measures
Code Cause of fault
Remedial measures
A
Overload
Reduce load
B
Interrupted phase in the supply
cable/motor winding
Check the converter and supply cables/measure the wind-
ing resistances and insulation resistances, repair after con-
sultation with manufacturer
C
Interrupted phase in the feeder
cable after switching on
Check the converter and supply cables/check the winding
resistances
D
Converter output voltage too
high, frequency too low
Check the converter settings, perform automatic motor
identification
F
Winding short circuit or phase
short circuit in stator winding
Measure the winding resistances and insulation resistances,
repair after consultation with manufacturer
E
Stator winding incorrectly con-
nected
Check winding connection
I
Heat dissipation obstructed by
deposits
Clean the drive surfaces. Ensure that the cooling air can
flow in and out unimpeded
Cooling air inlet/outlet is
blocked by foreign bodies
Remove the blockage. Ensure that the cooling air can flow
in and out unimpeded
Fan motor does not start
Check the function of the fan motor
J
Insufficient shielding for motor
and/or encoder cable
Check the shielding and grounding
K
Drive controller gain too high
Adjust the controller
L
Rotating parts are grinding
Determine cause and adjust parts concerned
Foreign bodies in the motor
Send to manufacturer for repair
Bearing damage
Send to manufacturer for repair
M
Rotor not balanced
Decouple rotor and rebalance
N
Rotor out of true, shaft bent
Consult the manufacturer
O
Poor alignment
Align machine set, check coupling
P
Coupled machine not balanced Rebalance coupled machine
Q
Mechanical shocks from cou-
pled machine
Inspect coupled machine
R
Uneven gearbox operation
Repair the gearbox
If the fault still cannot be resolved after applying the measures specified above, contact the
manufacturer or Siemens Service Center.
Summary of Contents for SIMOTICS M-1PH1
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