Troubleshooting and fault elimination
INTORQ | BA 14.0215 | 07/2019
49
Fault
Cause
Remedy
Brake cannot be released, air
gap is not zero
Incorrect micro-switch wir-
ing
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 manufacturer.
Air gap "s
L
" is too large
¾
For adjustable brakes:
– Adjust the air gap (Adjusting the air gap).
¾
For non-adjustable brakes:
– Replace all rotors.
Rotor cannot rotate freely
Air gap "s
L
" too small
Check the air gap "s
L
" and adjust if necessary (Adjusting
the air gap).
Rotor is too thin
Rotor has not been re-
placed in time
Replace the rotor (Replace rotor).
The voltage is not zero during
the functional test (refer to the
chapter Function checks be-
fore initial commission-
ing, Page 41).
Incorrect micro-switch wir-
ing
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 undamaged
one.
AC voltage is not mains
voltage
Fuse is missing or defective Select a connection with proper fusing.
Incorrect micro-switch wir-
ing
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.
