False Shutdowns

Do the following to set up for unit test.

1. Remove wires from 4,5,7. Be cautious this may remove

the emergency stop or other critical function. Be

prepared to override and stop engine during this check.

2. Put voltage on 13 and check to see that you have

4.5 volts on terminal 4 and terminal 5.

3. If you have 4.5 volts DC on both terminal 4 and 5 then

start engine and see if it faults out.

4. If engine runs ok then connect wire 4 and check

engine operation again. If ok then go to 5 else check

to see if you have a safety or a sender. The unit will

only work with a safety switch NOT a sender. Check

to be sure you have either an open circuit or a short

when the switch closes and opens.

5. Repeat the test with terminal 5.

6. Connect remaining safety switches and check to see

if any of them trip unit.

7. If your false shutdown was overspeed you may have to

increase your overspeed setting to allow for too much

overshoot during startup from the governor.

8. Most false trips are due to wiring or safety switch

problems. If the unit does not have a problem when

the safety switches are disconnected then you must

look with great care at the safety switches themselves.

9. The control is designed for high levels of electrical

noise to be present and not have a false operation.

Remember to re-adjust and wire your unit after testing.