SIMOTICS S-1FT2 synchronous motors for SINAMICS S120
Operating Instructions, 07/2021, A5E50610821B AB
79
Faults and their rectification
9
WARNING
Operation without functioning protective devices
Operation without functioning protective devices can cause death or severe injury.
•
Operate the motor, even in test operation, only with functioning protective devices.
NOTICE
Motor damage caused by faults
Faults can cause damage to the motor.
•
Correct the fault cause as specified in the remedial measures.
•
Repair any damage to the machine/motor.
If there are deviations from normal operation or if faults occur, proceed as follows.
•
Identify the fault using the "Possible faults" table.
Also observe the converter messages.
•
Try to correct the fault using the "Fault causes and remedial measures" key table.
Table 9- 1
Possible faults
Fault
Fault cause (see "Fault causes and remedial measures" key table)
Motor does not start
A B
Motor starts slowly
A
C
F
Humming sound when starting
C
F
Humming sound in operation A
C
F
High temperature rise under
no-load operation
D
I
High temperature rise under
load
A
C
I
Uneven running
J
K
Grinding sound, running noise
L
Radial vibrations
M N O P
R
Axial vibrations
O
Q R
