Wittur servogearless WSG-S3.4 Instructions De Service page 90

Troubleshooting and fault elimination
Fault Cause
Rotor cannot rotate Air gap "s
freely
Rotor thickness too Rotor has not been
small replaced in time
Voltage is not zero Incorrect micro-switch
during functional wiring
test (6.2.2 or 6.2.3)
Micro-switch defective
or incorrectly set
Voltage too high Brake voltage does
not match the rectifier
Voltage too low Brake voltage does
not match the rectifier
Defective rectifier
diode
AC voltage is not Fuse is missing or
mains voltage defective
Incorrect micro-switch
wiring
Micro-switch defective
or incorrectly set
INTORQ | BA 14.0196 | 04/2016
Remedy
" too small
Readjust the air gap "s
L
Replace the rotor (
Check and correct the wiring of the micro-switch.
Replace the complete stator and return the defective complete stator to
the manufacturer.
Adjust rectifier and brake voltage to each other.
Adjust rectifier and brake voltage to each other.
Replace defective rectifier with a suitable undamaged one.
Select a connection with proper fusing.
Check and correct the wiring of the micro-switch.
Replace the complete stator and return the defective complete stator to
the manufacturer.
" ( 28).
L
45).
49