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

[chefffe]

If this is working I would be fine. Can you tell me how to do it? You mean to actuate an external relay, right? What needs to be connected then where?

Ok, I think I just understood now what you mean. You mean with an extra switch on FOR/REV you turn in parallel a Relay which switch the Pump on. This solution is also not possible, as I need to use the standard control box with display for commands.

Does nobody know how to use these Optocouplers DRV/UPF/DCM?

[Chaz]

I'm confused.

What stops you from just triggering the VFD from the Run signal, having controller use M codes to close relays and the speed reference local to the board (ie, full Hz). Is there a reason you cannot access the traditional FWD command on the VFD?

Also, what's up with the forum today, very slow, timing out.

[chefffe]

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.

[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?

[chefffe]

I use simple Arduino with Ramps controlled by Marlin 2.0. As I mentioned, this is only a MPCNC.

[Chaz]

I use simple Arduino with Ramps controlled by Marlin 2.0. As I mentioned, this is only a MPCNC.

Ok, so can you have an option where, in your code, you enable a G Code and then enable an output signal? I used Marlin and RAMPS for my 3D printers, so it should be possible.

The same way a heatbed is activated (Relays on the board) you can do here. Enable a relay, switch an external relay that has logic. Ill draw a circuit diagram if it helps ... ?

[chefffe]

Yes sure, this might be an option too. How to do it on a Ramps I am aware.
As I also dont see getting these UPF DCM DRV Ports running like I want, I will rethink this. Thank you for now.