Stepper motor driver has powerful memory function

When powered off, the stepper motor driver is in phase. If the next power-up is different from this stage, the motor will "vibrate". To eliminate jitter, the operator is required to remember the phase when the power was turned off.

If the stepper motor runs in sequence 8, if the stepper motor stops running in step 4, the board is cut off and re-energized, if the stepper motor starts driving directly in position 4, the stepper motor skips in step 1. If the system remembers that it is still in step 4, it can correctly issue the command to perform step 5 or step 3.

Most stepper motor drivers do not have the electrical phase memory function, especially the stepper motor drivers of ordinary dedicated ICs. The reset pin reset signal of the dedicated IC will reset the motor phase to the initial value after charging. Jitter should be avoided during charging. Even if the absolute value of the servo motor exists, it must be judged and corrected. Or, strictly speaking, no electric motor. The key to this advice is how much impact the vibration will have on your application. It's better to record the absolute stop coordinates, reset the system to check the origin, and then run until the absolute coordinates are restored.

Recommended reading

Planetary reducer

CGX115

CGXK142

Reduction motor selection analysis

Disassembly and assembly method of right angle reduction motor