When motor errors are frequently occurring.
Check Motor Belts
The most common cause of motor errors is belt tension.
Ensure that your motor belts are attached correctly. The motor belts should
- have adequate tension. (The belts should be taut and not sagging.)
- be straight and level.
Ensure that the constants/parameters have the proper variables.
Perform Motor Lock Test
Lock the motor and try to move the machines in the direction you have locked. Perfrom this test several times, moving the machine a 1/4 inch or so before relocking and testing again. (The idea is to test the entire 360 degree revelution that the motor turns.) If the motor grinds instead of staying locked in place, you may have a faulty motor.