Quote:
Originally Posted by dsirovica
Sorry I don't know how to add a link to a post , but there are test results posted under
CD>technical>programming>Voltage vs. PercentVbus
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I've been following this thread, actually; I just haven't been reading very thoroughly as I've had work to do. To link to a post, just right-click the post #, which is at the top right corner of a post.
Quote:
Originally Posted by dsirovica
In there you will see that the Jags do not cut out at 40A precicely - I believe it is a thermal mechanism. We were getting 100A+ spikes and 80A+ for many seconds before cut out. You will also see a very minimalistic settup and the cRIO crashes consistently -see CIM Test #6 & 7
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To my knowledge, this cutout is done by the firmware, not by a thermal mechanism. The
Jaguar actually monitors the current. It is, however, designed to handle
above 40A for a few seconds; speculating on the reason for the "many seconds" is beyond me.
Quote:
Originally Posted by dsirovica
In the same thread a contributor who appears to be from NI says the 8 slot cRIO (which ours is) needs 19V to work. We did not test that.
So far no one else has responded that they too had cRIO crashes when CIMs stall, so it may be something with our PDB it is an old war scarred PDB so will do more tests and report back when we recover from the post bagging depression  |
Both the 2011 and 2012 PDBs are designed to output 24V down to a 4.5V input; I'm not aware of specs for the 2009 or 2010 PDB.
We managed to reboot our cRIO once, but we managed to push our robot to cause a current spike that forced our voltage to around 4V, so I'm not surprised that it happened.