12v/24v Festo Solenoids

[Mk.32]

Hello all,
So the Festo valve we got in our kit is the 24v one and we rigged up to solenoid break-out and it works perfectly.
We needed a 2nd solenoid so we ordered off andymark, and got it today after assuming it was the same thing wiring it up to the breakout i noticed it was running a bit hot. Then realized it was a 12v solenoid getting 24vs....
So my question can the 12v Solenoid take the 24v?
Or do we have to use an spike relay? <-- Which i don't really want to do more wires etc.

[PAR_WIG1350]

I don't think that you should power the 12 volt coil with 24 volts, however you could add a second solenoid module and breakout to which you could supply 12 volts or you could use spikes.

[Team#2057-Vegas]

im surprised you're having a problem, we used to do it all the time. there must be a problem we just got lucky not to have. in slot 7 put another pnuematics module with 12 volt wiring and wire that one there.. just remember to change slots in your programming for that solonoid. best of luck

2057

[Mike Betts]

Powering 12V devices with 24V is a practice I would avoid unless the manufacturer's spec sheet says it is OK. Power dissapation goes up as a square of the voltage.

FIRST just posted 12V and mixed (12 and 24V) power distribution diagrams on the KOP website. I would stick to their wiring recommendations.

Regards,

Mike

[Mk.32]

Thanks for the input everyone.
To add an pnuematics module to slot 7, can we do it from the KOP or do we need to order anything more?

[Speeder]

You'll need a second Digital Sourcing Module (NI #9472). Veteran Teams will probably have 2 of these accumulated from previous years while 2011 Rookie Teams will only have recieved 1 this year.

Might be easier to get a second valve @ 12VDC or 24VDC and use the existing module.

Don