Siemens SIMOTICS T-1FW6 Operating Instructions Manual page 123

Table 8-2 Key to causes of faults and remedial measures
No. Cause of fault
A Overloading
B Interrupted phase in the supply cable
C Interrupted phase in the supply cable after switching on Check frequency converter and supply cables
D Motor commutation is faulty
E Winding short circuit or phase short circuit in stator
winding
F Cooling water not connected / switched off
Water connection / pipes defective
G Cooling water flow rate too low
Intake temperature too high
H Insufficient shielding for motor and/or encoder cable
J Drive controller gain too high
K Rotating parts grind
Foreign bodies in the motor
Bearing damage
L Poor alignment
M Shocks from coupled machine
N Cooling water pipes/water connection defective
If the fault still cannot be resolved after applying the measures specified above, then contact
Technical Support or your responsible sales partner.
1FW6 built-in torque motors
Operating Instructions, 09/2022, A5E52220812B AA
How to remedy the problem
Reduce load
Check frequency converter and supply cables
Check the commutation, if required re-adjust the commu‐
tation angle offset
Measure the winding resistances and insulation resistan‐
ces, motor replacement after consultation with the manu‐
facturer
Check cooling water connection / switch on cooling water /
check cooler
Locate leaks and seal as necessary, or consult the manu‐
facturer
Check cooling water flow rate according to data sheet
specification
Set correct intake temperature
Check the shielding and grounding
Adjust the controller
Determine cause and adjust parts
Consult the manufacturer
Contact the manufacturer; where required, repair by the
manufacturer
Align motor unit, check coupling
Check coupled machine
Locate leaks and seal as necessary, or consult the manu‐
facturer
Operation
8.3 Dealing with faults
121