Re: PDB 24V keeps dying
 

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Re: PDB 24V keeps dying
 

In the 24v connector on the PDB, there are four wires connected. Only two should be connected. I see that there are only two wires on the CRIO end. Where are the other two going? It looks like it might be the sidecar. The sidecar should be fed by 12v on a dedicated 20A breaker.

Re: PDB 24V keeps dying
 

I just looked again and it looks like the second set of wires is going to your analog breakout. That should also be powered by a dedicated 12V 20A breaker.

Re: PDB 24V keeps dying
 

The second set of 24v wires feeds the solenoid breakout (properly).

I'd suggest a systematic step-by-step isolation of the problem.
If it's repeatable in a timely manner.

Example given:

1. pull all the power breakers
2. pull the camera and radio power
3. pull the 24v connector

• Turn the system on, see if the 24v power light goes out
• if not:

1. Add in the power breakers

• Turn the system on, see if the 24v power light goes out
• if yes, further isolate the offending breaker
• if not:

1. Add the camera and radio

• Turn the system on, see if the 24v power light goes out
• if yes, further isolate which power causes the problem
• if not:

1. pull the two remaining cRIO modules
2. pull the solenoid power separately from the Breakout
3. Add the 24v power back for just the cRIO chassis

• Turn the system on, see if the 24v power light goes out
• if yes, probably remove the cRIO and do an internal cleaning, per NI directions. Retest.
• if still yes, pull the second set of 24v wires from the connector and retest.
• Check the module pins as well
• if not:

1. Add the Digital module

• Turn the system on, see if the 24v power light goes out
• if yes, test in the alternate digital module slot, as well to see if the problem follows the module.
• if not:

1. Add the unpowered solenoid module

• Turn the system on, see if the 24v power light goes out
• if yes, test in the alternate digital module slot, as well to see if the problem follows the module.
• if not:

1. Add the 24v solenoid Breakout power

• Turn the system on, see if the 24v power light goes out
• if not: (the gremlins have won)