Spindel issue on Silverback

Is there an current overload protection for the spindel?
My work piece shifted and stopped my spindle, I immediately hit the emergency stop and resecured my workpiece, but now after resetting the emerg. stop the spindle won’t start.
All of the other motors are working.

No, i dont believe there is. Make sure the speed control knob is turned all the way up. And listen for a click when trying to engage the spindle.