CNC lathe machine using GSK928TC/GSK928TE/GSK928TEII, the feedrate override switch is not working, no matter change to 1X, 10X, or 100X, the speed is the same.

This could be the parameter setting error:

Check the BIT0 of No.72 diagnose parameter, 1 means outer override disable, change it to 0, the problem solved.

GSK928TEII Lathe controller specification:

http://www.cncmakers.com/cnc/controllers/CNC_Controller_System/GSK928TEII.html

GSK928TE Lathe controller specification:

http://www.cncmakers.com/cnc/controllers/CNC_Controllers_for_Lathes/GSK928TE.html

GSK928TC Lathe controller specification:

http://www.cncmakers.com/cnc/controllers/CNC_Controllers_for_Lathes/GSK928TC.html