8.2 Handling faults
If there are deviations from normal operation or if faults occur, initially proceed according to the
following list. In this regard, observe the relevant chapters in the documentation associated with
the components of the complete drive system.
WARNING
Risk to life as a result of non-functioning protective devices
Protective devices that are not functioning can result in death, serious injury or material
damage.
• Do not deactivate protective devices. This also applies to test operation.
• Only work with protective devices that are fully functional.
NOTICE
Damage to the machine caused by faults
• Resolve the cause of the fault as specied in the remedial measures section.
• Repair damage to the machine.
• Replace the damaged motors.
Table 8-1 Possible faults
Fault Origin of disturbance (according to the following table)
Motor blocked A B C D
Noise during operation D E K
High temperature rise during no-load operation D
High temperature rise when under load A D
Uneven running H J
Axis is sluggish E K L
Table 8-2 Key to causes of faults and remedial measures
No. Cause of fault How to remedy the problem
A Overloading Reduce load
B Interrupted phase in the supply cable Check frequency converter and supply cables
C Interrupted phase in the supply cable after switching on Check frequency converter and supply cables
D Motor commutation is faulty Check the commutation, if required re-adjust the commu‐
tation angle oset
E Winding short-circuit or phase short-circuit in the pri‐
mary section winding
Measure the winding resistances and insulation resistan‐
ces, motor replacement after consultation with the manu‐
facturer
H Insucient grounding of the motor and/or encoder ca‐
ble
Check the grounding
Operation
8.2Handling faults
Naturally-Cooled 1FN3 Linear Motors
106 Operating Instructions, 06/2023, A5E52220465B AB
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