
18-02-2012, 09:21
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Just Itinerant
AKA: Hey dad...Father...MARK
 FRC #0358 (Robotic Eagles)
Team Role: Engineer
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Join Date: Mar 2003
Rookie Year: 2002
Location: Hauppauge, Long Island, NY
Posts: 8,905
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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: - pull all the power breakers
- pull the camera and radio power
- pull the 24v connector
- Turn the system on, see if the 24v power light goes out
- if not:
- 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:
- 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:
- pull the two remaining cRIO modules
- pull the solenoid power separately from the Breakout
- 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:
- 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:
- 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:
- Add the 24v solenoid Breakout power
- Turn the system on, see if the 24v power light goes out
- if not: (the gremlins have won)
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Last edited by Mark McLeod : 18-02-2012 at 09:31.
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