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Unread 29-03-2010, 16:11
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Re: Who did NOT have comm problems in Waterloo regional?

Quote:
Originally Posted by Azores View Post
EDIT: Oh yea, we did notice our voltage dropping incredibly low under load though - as in from 12V to 8V just from driving forward at full speed with our compressor and vacuum both not running. It was enough to significantly dim our RSL. So we suspect that we probably damaged a CIM by overstressing it with how many times we would have stalled it, and it's drawing too much current.
I think you've solved it. The bridge reboots when the voltage drops below 5.5 V; the cRIO reboots when it drops below 4.5 V. What could have happened was: a) the motors draw a lot of current even when not stalled, dropping voltage to 8 V, b) the motors stalled, c) the compressor/vacuum drew even more current, dropping voltage still further, and d) a CIM got damaged, lowering the battery's voltage below 5.5V and causing the bridge to reboot.