From k8xxx-3dprinter
- Possible causes :
- One or more lines in the motor wiring are broken or shorted together or to the chassis
- - Unplug the motor connector from the controller and measure the resistance between pins 1 and 2 / pins 3 and 4 of the connector
- THERE MUST BE NO CONNECTION OF PINS 1 AND 2 TO PINS 3 OR 4!
- The resistance should be around 2-4 Ohms.
- If it is less than 2 Ohms you have a short in the wiring of those two lines or the coil of the motor is bad.
- If it is much more than 4 Ohms (towards infinite) you have an open circuit in the wiring of those two lines or the coil of the motor is bad.
- - Unplug the motor connector from the controller and measure the resistance between pins 1 and 2 / pins 3 and 4 of the connector
- Stepper driver module is set to wrong reference voltage
- - check the reference voltage set at the stepper driver modules
- The reference Voltage should be set to 0.55V
- (works better for most cases that the 0.425V stated in the Velleman manual)
- If it is set too low the motor will have too less force to turn.
- If it is set too high the motor has too much current, thus affecting proper microstepping and causing the stepper drivers to overheat, resulting in lost / skipped steps.
- Stepper driver module faulty
- - swap the stepper module with one of a working axis and try if the error moves with it
- MAKE SURE THE WIRING IS CORRECT BEFORE DOING THIS!
- If the error moves with the driver, the driver module is faulty and you need to replace it.
- If it does not, check the previous steps again!
- - swap the stepper module with one of a working axis and try if the error moves with it