SV_PC_COMMANDED_SPINDLE_SPEED troubles

[rjtechserv]

I'm having trouble understanding what factors and maybe parameters the PC is using for this final COMMANDED Spindle Speed multiplier. We are just using the base M400 Hickory 2axis system on this. No USB or Virtual Controls. I'm wondering if I have one of the parameters set by mistake dragging this final commanded spindle speed down? It seems to be at like 1% speed. Asked the machine to run s4000m3 and we get 40.

Thanks,

Rob

[centroid467]

You have Parameter 33 set to 0.01 which is giving your division by 100. According to page 271 in the lathe manual, setting it less than one will tell CNC12 that the chuck spins faster than the motor.

Commanded 4000 rpm at the chuck -> 4000 rpm * 0.01 = 40 rpm at the motor.

What is the actual ratio between the spindle motor and the chuck in the highest range?

[rjtechserv]

You got it, thanks for finding the Ooops. I'm running the Mill version looking at the parameters 65,66,67 and didn't notice 33. And wouldn't have expected that to be a factor in the Milling PLC. We are 1:1 so it's changed to 1.

Thanks a bunch!

Rob