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

[chefffe]

Hi, I built my first CNC Router (just a "lousy" MPCNC :)) and got a 0,8kw Chinaspindle and Huanyang VFD2,2kw.
I created a Waterpump solution using 12V supply.
I would like to only turn the pump on, when the spindle runs. Therefore I wanted to use the DRV/UPF/DCM connectors switching an external Relay on. I already programmed PD050 and PD051 to "1" but I cannot measure anything between these two ports (no matter if spindle is on or off).
Now I dont have any clue how I could use these 3 ports for this action?

The FA/FB/FC Terminals are already used to switch the CNC off by error.

[AndyUK]

As FA/FB/FC are com NC and NO, can't you use the other side to indicate if the pump should run?

I.e. use the NO for the pump and NC for the error circuit?

Sent from my SM-G950F using Tapatalk

[chefffe]

The Relay with FA/FB/FC is already in use as an emergency off for the cnc control (motors eg.). Therefore I have to use somehow these Optocouplers.

As you have only one possibility to program FA FB FC, you cant use two functions with it. When I program it to switch only with an error, then the pump will run always except an error occurs. The plan was to switch the pump on, when the spindle starts.

[Doddy]

I think I'm missing the point here. Can you not simply 'or' the FOR/REV inputs to actuate a relay to switch the coolant pump?

[chefffe]

FOR/REV are inputs ... dont know what you mean.

[Doddy]

So, use the switched inputs to actuate a relay AS WELL as command the spindle to spin... So the coolant pump is driven by the demand, rather than the spindle status.

I appreciate that this isn't answering your question on the use of the DRV/UPF outputs