[Machinaria]

I have a CM101 breakout board and I need to know how to wire a 24V pneumatic solenoid to it.

How to connect a 24V pneumatic solenoid to CNC breakout board.

[Al_The_Man]

If the BOB has outputs, e.g. relay contact then if the contacts are rated ok then you can switch the 24v+ direct, you need to wire a reverse biased (BEMF) diode across the coil.
http://www.progeny.co.uk/Back-EMF-Suppression.aspx
Al.

[Machinaria]

the CM101 has a relay that is rated 24V
so does that mean it can connect directly to the board?
does the diode need to be facing certain way? and is there a specific diode to use.

Thank you so much for your time
I will pay it forward once I get the hang of this

Sincerely
Anna

[Al_The_Man]

Diode can be any of the 1n400x series, 1n4007 has a wide range.
The stripe has to face the +v side of the coil supply.
take the -ve direct to the solenoid, 24v+ to one side of the relay contact, the other contact to the solenoid.
It is preferable to wire the diode as close to the solenoid as possible.
Al.

[Machinaria]

Thank you very much!! I have been looking for wiring diagrams and such without any luck. I will give this a go and post a wiring diagram if I get lucky.

Best regards
Anna