After calibration my driver's current limit is 1600 mA

[PCrnjak]

Which product?

Other, or more than one

Your question

Asked often on Discord; posted here with the answer so it can be found.

I set the current limit for my motor, ran the calibration and saved. Now #Ilim reads 1600 mA, not what I set. This happens on both STEPFOC and Spectral Micro.

What have you tried?

STEPFOC firmware 108, Spectral Micro firmware 107.

[PCrnjak]

This is known issue KI-2 on both drivers. Calibration sets the current limit to 1600 mA and leaves it there, whatever it was before, and a #Save right after calibration stores the 1600 mA.

After every calibration:

1. Set #Ilim for your motor.
2. Then #Save.

For the grippers: on an MSG, set the stepper's maximum, 1500, 2000 or 2100 mA for the 21.5 mm, 40 mm or 60 mm stepper (or apply Motor GUI's MSG preset). On a self-built SSG-48 with the GBM5208-75, 1000 mA, the default, suits it.

Details: calibration in the STEPFOC manual and the Spectral Micro manual.