[niki21]

I'm trying to connect the UC300 to the LY620 VFD, and I'm having problems starting the spindle, and if it's already working, then the speed can't be controlled.
Thank you if you can help me.
The VFD is configured correctly and works great with another CNC controller.
Tank you.

[cncmakers001]

I'm trying to connect the UC300 to the LY620 VFD, and I'm having problems starting the spindle, and if it's already working, then the speed can't be controlled.
Thank you if you can help me.
The VFD is configured correctly and works great with another CNC controller.
Tank you.

It looks like need to set the VFD's 10V voltage to match the maximum spindle speed of the controller, below is an example for your reference.
https://paycnc.com/info/max-spindle-...ing_i0744.html

[niki21]

N?. As I mentioned in my post, this VFD in this configuration works great with another CNC controller.The problem as I see it is that when I run the SPINDLE at a speed of 24000 I measure 10V at the VSO port of the UC300 controller. If I try to lower the speed even to 20000 the voltage drops to 0, only at 24000 there is voltage at this port.
Maybe something in the MACH3 settings.

[Sterob]

I'm trying to connect the UC300 to the LY620 VFD, and I'm having problems starting the spindle, and if it's already working, then the speed can't be controlled.
Thank you if you can help me.
The VFD is configured correctly and works great with another CNC controller.
Tank you.

I would check your parameter settings on your VFD ang go from there.
It was working, but you need to confirm *how* it was working.
Maybe VFD is expecting a different type of speed signal than it is getting.

Just a thought.