Faults and trouble shooting
Faults and trouble shooting
When either one of the variable speed drives or frequency converters in the machine experience a fault and “trip” out, they will cease to run and an error message will appear flashing on the keypad display (see picture below).
The following list are the most commonly experienced faults and possible action steps.
Fault code
Fault Code | Possible Cause | Action |
| Motor being worked too hard and | Check current being drawn when machine is |
| drawing extra current. | running. Reduce speed setting and current draw |
|
| back into acceptable limits as described on |
|
| previous page. |
| Short circuit on output side of vari- | Check wiring in plugs connected to motor cables |
| able speed drives or frequency con- | or inside connection boxes on motors. |
| verters. |
|
| Motor failure (very rare) | Have motor tested and replace if required. |
| Poor voltage supply to machine will | See comments on page 10 |
| result in excess current draw |
|
| Short circuit on output side of vari- | Check wiring in plugs connected to motor cables |
| able speed drives or frequency con- | or inside connection boxes on motors. |
| verters. |
|
| Motor failure (very rare) | Have motor tested and replace if required. |
| Insufficient voltage supply to ma- | Check power supply and ensure correct voltage. |
| chine. |
|
| Power supply to variable speed | |
| drives or frequency converters has |
|
| been turned off. |
|
Short circuit on output side of vari- | Check wiring in plugs connected to motor cables | |
SUPERVISION | able speed drives or frequency con- | or inside connection boxes on motors. |
verters. |
| |
|
| |
| Motor failure (very rare) | Have motor tested and replace if required. |
Variable speed drives or frequency | Open door on electrical cabinet to increase ven- | |
PERATURE | converter over temperature due to | tilation. Have variable speed drives or frequency |
| high temperature working environ- | converter tested by service agent. |
| ment or faulty temperature sensor. |
|
|
|
|
| Motor being worked too hard and | Check current being drawn when machine is |
| drawing extra current. | running. Reduce speed setting and current draw |
|
| back into acceptable limits as described on |
|
| previous page. |
| Mechanical jam preventing motor | Try rotating grinding discs and planetary head by |
| from turning. | hand to see if jam exists |
16 - MOTOR OVER TEM- | Motor being worked too hard and | Check current being drawn when machine is |
PERATURE | drawing extra current. | running. Reduce speed setting and current draw |
|
| back into acceptable limits as described on |
|
| previous page. |
English - 15