Back to top

Hypertherm vertical axis setup issue

Hypertherm is a CNC for laser/plasma cutting machines.  We have received some reports on issues with setting up AKD drives being used with this machine. Following are some tips.

  • PL.ERRFTHRESH = 0, needs to be disabled.  The Hypertherm has it's own position error fault
  • UNIT.PROTARY needs to be 3.  UNIT.PIN = 2^FB1.PSCALE.  UNIT.POUT = 1
  • Hypertherm CNC's Axis encoder units need to be set close to correct.
  • Hypertherm CNC's Servo Error Tolerance needs to be something reasonable like 1/4".  0.001" will fault right away
  • Hypertherm CNC's Servo Stall Tolerance will set the position error value where "Home to a hard stop" triggers home has happened.
  • Hypertherm CNC's Stall Torque is the homing torque for Home to a hardstop.