Huanyang VFD, how to get Waterpump switching on with UPF/DRV/DCM connectors?

[Chaz]

I am not sure if we are talking about different things.
I only operate the VFD with its own terminal. To be honest, I am a complete rookie with CNC and this is my first experience. I am pretty happy that everything works so far :), but having this feature would be the last step I wanted to go. If this is not working like I want regarding pump I can anytime let the pump switch on with the +24V Signal and DCM. The only drawback is then that the pump is running also when the spindle is not turning.
I believe you mean I could control it seperately from the VFD which is of course also somehow doable, but I am yet not that advanced so far. To me it would be sufficient just to operate this from the VFD.

Not difficult to do.

You could run a relay from your controller, activated on M8 (flood) or M7 (mist) G Code, that then enables the Coolant pump but then runs through another relay which is triggered by the Spindle Run command (For your spindle). I do the same for my CNC Lathe but dont care about spindle status.

Get yourself some 24V relays and drive the logic from your controller. What control option are you using?