Vacon CX - Page 45

TROUBLESHOOTING Service Manual M4 - M10
11.07.2002 Page 45
F29
Check wiring from thermistor to terminals 21-22
on optional board
F29 THERMISTOR PROTECTION
Check condition of thermistor in motor
Clear fault memory
Wiring OK
Thermistor
OK
Short terminals 21-22 on optional board
Replace option board with functioning one
according to instructions in option board's users
manual. Replace defective parts as
recommended in spare part lists
Replace the termistor
F29
F29
YES
YES
NO
YES
Make corrections to wiring
F29
Fault activated by external factor. Check
external circuit and thermistor
NO
NO
NO
NO
YES
YES
Check temperature of motor.