Cnc 3040t

[JAZZCNC]

You can set it so that in the G-code an S instruction will select the right speed. For example if you put S18000 it should rotate at 18000 rpm, then calibrate the vfd keypad display so it shows the right speed too.

Probably not using a VFD eddy it's most likely just using DC speed controller.? . . . . But in either case the principle is the same and the VFD should display the speed in relation to the voltage being output so shouldn't be tweaking or calibrating the VFD at all other than to set parameters and display RPM not Amps or frequency.!

The S command will only output voltage based on the pulley ratio so if Max pulley is say 18000rpm and max spindle speed 24000rpm then you'll get 24000 rpm when you call for S18000 which will be 10V as the ratio takes the voltage into account. So say you set the pulley ratio as Min RPm = 6000 and Max 24000rpm then >0V = 6000 and 10V=24000rpm. You'll get a spindle pulley ratio error message if you tried to input S3000 or S25000.