On a stepper motor driver we have the high voltage section where we connect the required power and we also have the signal section where the wiring from the stepper motors connect.

I use shielded cables for both the high voltage and signal sections and my question is do I ground the shielded cable in both sections or just the high voltage or signal section?

Right now only the shielded cable ground wire from the high voltage section goes to my star point ground.

Thanks