Warner Electric CBC-750 - Manual (Page 14)

14 Warner Electric • 800-825-9050 819-0494
General
The chart below will be helpful in solving problems which may be encountered in both start-up and normal
operation. If situations are encountered which are beyond the scope of this troubleshooting guide, please
contact your local Warner Electric Market Representative or ask for applications assistance by phoning (815)
389-3771 and asking for the Application Engineering department.
Symptom A: Indicator LED’s do not illuminate when power is applied.
Probable Cause Solution
No power applied to control Check that AC power to control is on.
Check for proper AC power at terminals 5 and 6 of TB-6
Input line fuse is blown Check for blown power fuse F1. Replace if blown.
Interboard connectors are loose Check that cables and connectors are securely fastened
to main control board.
torque adjust pots set at minimum Turn torque adjust potentiometer CW to increase torque level.
No internal power Check for AC input. Check for 12VDC at terminals 1 and 2 of
TB-5 and across channel 1 and channel 2 outputs. If no
voltage present, replace main board.
Symptom B: Short circuit LED’s illuminate
Probable Cause Solution
I mproper magnet or field Coil voltage Check magnets and fields for proper coil voltage ratings.
Replace if wrong voltage.
Shorted magnet or field coil Check resistance of magnet coils. Replace magnet or field if
shorted.
Wiring between control and magnets or Check for shorted conditions in wiring between controls
fields shorting and magnets or fields. Replace if defective.
Transient noise Check for source of transient noise and suppress. Wire
control using shielded cables. Segregate wiring runs.
Symptom C: Magnets or fields do not engage when power is applied
Probable Cause Solution
Torque adjust set at zero (0) Increase torque setting.
Current range switches improperly set check dip switch settings per charts found on page 12
and reset if required.
No power applied to control Refer to symptom A above.
Output inhibit input activated Check input status on output inhibit input.
System incorrectly wired Check wiring per the wiring diagram and rewire if
necessary.