Troubleshooting and fault elimination
INTORQ | BA 14.0214 | 10/2019
54
Fault
Cause
Remedy
Brake does not release
Incorrect micro-switch wiring
Check the wiring of the micro-switch and correct it.
Micro-switch incorrectly set
Replace the complete stator and make a complaint
about the setting of the micro-switch to the manufac-
turer.
Air gap "s
L
" is too large
¾
For non-adjustable brakes:
– Replace rotor. Refer to Replace rotor, Page 51.
Rotor cannot rotate freely
Air gap "s
L
" too small
Check the air gap "s
L
".
Rotor is too thin
Rotor has not been replaced
in time
Replace rotor. Refer to Replace rotor, Page 51.
The voltage is not zero during
the functional test (refer to the
chapter Function checks be-
fore initial commission-
ing, Page 43).
Incorrect micro-switch wiring
Check and correct the wiring of the micro-switch.
Micro-switch defective or in-
correctly set
Replace the complete stator and return the defective
complete stator to the manufacturer.
Voltage too high
Brake voltage does not match
the rectifier
Adjust rectifier and brake voltage to each other.
Voltage too low
Brake voltage does not match
the rectifier
Adjust rectifier and brake voltage to each other.
Defective rectifier diode
Replace the defective rectifier with a suitable undam-
aged one.
AC voltage is not mains
voltage
Fuse is missing or defective
Select a connection with proper fusing.
Incorrect micro-switch wiring
Check and correct the wiring of the micro-switch.
Micro-switch defective or in-
correctly set
Replace the complete stator and return the defective
complete stator to the manufacturer.
