Question regarding CRIO

[dani190]

Hello, i have reason to believe our teams CRIO power connectors have broken. I heard this is a common issue.

I am talking about the wago connector location, sometimes the board powers on sometimes it does not.

I am wondering does NI cover this under warranty, or can i just fix it my self?

Thanks, Dani

Team 2185

[G-Money]

Dani,

       Your post is a little confusing. Make sure that you have connected your 24V power supply to the power distribution board and the connected your cRIO to the 24V cRIO power supply terminal on the power distribution board. The cRIO shouldn't be wired up to the wago connectors (the red and black ones) but should be wired up to the connector that says "V C NC C" on it (little black one that looks the same as on the actual controller itself). If all of this is wired correctly and your cRIO is turning on and off periodically still, then try plugging a power supply (24V battery) to the cRIO and see if the behavior is still there. The common issue I think you are thinking of is a blown fuse issue that a lot of teams had last year but a blown fuse on a cRIO chassis would cause the cRIO to never power on and you said that the cRIO powers on sometimes. Let me know how things are wired up on your end and I will do my best to get you back up and running in no time.

Grant H.

[sciencewhiz]

This sounds more like a loose wire between the cRIO and the PDB. Since the cRIO connector uses screw terminals, have you verified that they are tight and are gripping the wire (rather then the insulation). You should verify this on both the cRIO and PDB, and can give it an additional check by tugging on the wire.

[dani190]

the cRIO is connected via the V and the C.

Now it no longer powers on, i asked other team members who have tried it since our last even and they said it also never turned on.

I am going to school tonight, so i will use our dc power supplies and see if it will power on...

Im thinking now that it hasent powered on since it must be a fuse in the cRIO.

Is that a user replaceable part?

[G-Money]

Dani190,

          Definitely make sure that all the wire connections are secure because they are screw terminals and not spring terminals. Hooking up the cRIO to a direct power supply is ALWAYS a great first troubleshooting step. If any teams are having problems with their cRIO powering on, then hooking it up directly will take the PDB (power distribution board) out of the equation. If it works fine when powered directly by the cRIO, then we know that the issue is coming from either the wiring connecting it to the PDB or the PDB itself. Let me know what you find out. Thanks!!

Best Regards,

Grant Heimbach
Applications Engineer
National Instruments

[dani190]

just tested it at my college using a dc power supply. I saw nothing going through the board. No current went through it, meaning like you said the fuse was blow...

I also tried reseting it and toggling the dip switches and no luck.

So im going to go with your theory that the circuit breaker or the fuse thats inside is blown...

Were do we go from here?

[G-Money]

Dani190,

        If you have correctly wired up a direct power supply to the cRIO and none of the power lights come on, then this might indicate a blown fuse. Your Team Leader can call the RMA department from 7am to 7 pm CST at 1-866-511-6285 to set up a return. Good luck with everything else!!

Best Regards,

Grant Heimbach
Applications Engineer
National Instruments