WITTUR WSG-TB.3 series, Operating Instructions Manual

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Troubleshooting and eliminating faults
INTORQ | BA 14.0210 | 12/2016 47
Brake does not release Incorrect microswitch wiring Check the wiring of the microswitch and correct it.
Microswitch incorrectly set Replace the complete stator and make a complaint about
the setting of the microswitch to the manufacturer.
Air gap too big
Adjust the air gap ( 26)
Measure the rotor thickness and compare against the min-
imum rotor thickness (
15). If required, replace the
rotor.
Rotor cannot rotate freely Wrong setting of manual
release
Check the dimension "s+s
L
" with the brake energized. The
dimension must be the same on both sides. Correct if
required.
Air gap "s
L
" too small
Check air gap "s
L
" and adjust it if necessary ( 26).
Rotor thickness too small Rotor has not been replaced
in time
Replace the rotor ( 43).
Voltage not zero during
functional test (
36)
Incorrect microswitch wiring Check and correct the wiring of the microswitch.
Microswitch defective or
incorrectly set Replace the complete stator and send the 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.
AC voltage is not mains
voltage Fuse is missing or defective Select a connection with proper fusing.
Incorrect microswitch wiring Check and correct the wiring of the microswitch.
Microswitch defective or
incorrectly set Replace the complete stator and return the defective com-
plete stator to the manufacturer.
Fault Cause Remedy