S1 speed limited to 750rpm

I hadn’t powered up the controller for a few months.

GSK980TDi CNC kit User:

Would you mind helping me with the S1 speed limited to 750rpm.

I am sure it was working fine before.

I can’t run the S1 motor any faster than 750rpm

If I program any other speed under 750rpm it works fine(if programmed @ 500rpm it runs @ 500rpm GOOD)

(If programmed @ 1000rpm it runs @ 750rpm – if I program 2000rpm it runs @750rpm)

C-position programming is fine.

I have gone through the parameters and can’t see what has changed.

Please help with me where to look

CNC Retrofit Package includes: 1 SET

Turning machine CNC controller GSK980TDi 1

AC Servo Unit for X & Z axis GR2045T-NP1-130SJT-M060D(A4I) 2

AC Servo Spindle Unit GS3050Y-NP2-ZJY208A-3.7BM 1

CNCmakers Support:

Please kindly set GSK980TDi Parameter No.73 to maximum.

And set GSK980TDi Parameter No.75 = 0.