powr dist. board/cRIO puzzle - please advise!

[Alan Anderson]

Originally Posted by Steve Compton

A simple short to the power distribution board and the cRIO folds.

Since the power being distributed by the board is coming directly from the battery, this should not be a surprise. If battery voltage drops low enough, the 24v boost supply for the cRIO shuts down. A breaker does not respond instantly, so the battery will likely be loaded long enough for the cRIO to lose power and reset after the breaker trips and the voltage comes back.


Your description of the testbed has a couple of problems, though. There should be no "15 amp fuse" anywhere in the system. Shorting a fuse should have no effect unless the fuse is blown and there is another short elsewhere. I'm going to assume you're talking about taking the positive side of a circuit powered through a 20A breaker and connecting it to the negative side, and not worry about it.