(Q) CNC laser cutting machine following height is different from the actual height 
 
(A)No preheating Please preheat the preamplifier for 2 to 5 minutes, and then operate BCS100 controller. The sampling capacitance in the preamplifier may changes with the changes in temperature. Please preheat the amplifier for 2 to 5 minutes, and then operate BCS100 controller after the sampling capacitance in the amplifier becomes stable.

Calibration problem The phenomenon above often appears if the follower capacitance is not calibrated again after replacing the nozzle.

Nozzle temperature increases abnormally (above 100oC) because the laser scatter to the nozzle or the blowing is abnormal, and thus the capacitance of cutting head changes.
The follower does not hit the board in intelligent calibration, and the actual following height is higher than the setting height.

Please do calibration after closing the intelligent check option.