Warner Electric CBC-700 - Manual (Page 7)

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Warner Electric • 800-825-9050 P-272 819-0527 5/12
System Troubleshooting
The chart below will be helpful when attempting to isolate problems which may occur in the control
system. It will also prove helpful when encountering problems during initial system start-up.
Symptom a: No output on either clutch or brake upon power-up.
Probable Cause Solution
Improper wiring Check wiring and correct if necessary.
No power available Check that AC power is available to control.
Blown fuse * See Fuse keeps blowing, Symptom C.
Faulty control Replace control.
Symptom B: Clutch activates upon power-up.
Probable Cause Solution
Improper wiring Check wiring and correct if necessary.
Faulty input switching circuit Check that input switching network is providing proper signal.
Symptom C: Fuse keeps blowing.
Probable Cause Solution
Improper wiring Check wiring and replace fuse.
Shorted brake/clutch coil Check coil resistance and replace if necessary.
Ground Fault Check coil to earth ground resistance.
Improper AC line voltage Check line voltage and correct if necessary.
Improper magnet voltage Check magnet voltage rating and replace with correct magnet if necessary.
Symptom D: Magnets do not appear to have enough torque.
Probable Cause Solution
Improper OEX switch setting Set pulse duration switch settings according to setup chart.
Magnets incorrectly sized Verify sizing by repeating the selection process.
Symptom E: Outputs don't switch; Inputs don't switch.
Probable Cause Solution
Incorrectly wired inputs Check wiring and correct if necessary.
Faulty switching device Check for proper operation and replace if defective.
Faulty control Replace control.
Symptom F: Switching time too long or too short.
Probable Cause Solution
Improper overlap pot setting Set overlap according to setup chart.
Symptom G: amber L.E.D. illuminated *
Probable Cause Solution
Improper wiring Check wiring and correct if necessary.
Shorted brake/clutch coil Check coil resistance and replace if necessary.
Faulty control Replace control.
* Turn off power to control for 10 seconds to turn off amber L.E.D.