I am using a NEMA 17 (17HD4005-22B) with a Big Easy Driver and an Arduino Uno R3. I am using the motor to move a threaded rod, which then pumps a liquid. The system basically functions as a linear actuator.
After trying to move a much too high load, I noticed that the stepper motor was not turning correctly. It moved erraticaly forwards and backwards a couple of steps. I also noticed to following:
- When I give it the signal to turn, I can turn the shaft very easily with my hand in either direction
- When it is powered and without any signal to turn, I can turn the shaft easily with my hand in either direction most of the time. If I crank the potentiometer all the way, I can not move it anymore
- I connected the motor to the stepper drivers of an i3-clone printer, and the motor does not turn. The previous two observations remained
- I connected the Big Easy Driver and Arduino to one the motors of the 3D-Printer and the 3d-printer motor did not turn
- Both windings of the broken motor have the same resistance
My doubts:
-
Is it possible that the high load caused the stepper to break?
-
Is it possible the driver is also broken?
-
How can I check any these possibilities?
Best Answer
Motors fail from inadequate current controlled torque.
Your testing and results in your question must include;
It unlikely you have a faulty motor and more likely excessive acceleration for the new load.