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Unread 21-01-2013, 18:15
dyanoshak dyanoshak is offline
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AKA: David Yanoshak
FRC #2158 (ausTIN CANs)
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Join Date: Dec 2007
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Re: Interesting Jaguar Death

Quote:
Originally Posted by jp1247 View Post
Today, whilst doing drive train testing I noticed one wheel was not spinning. Went and checked the jaguars and found the jag controlling that wheel to be off. No light, no smoke. Upon closer examination, the jaguar was emitting a distinct "tick", and each "tick", the fan would twitch. The jag "ticked" about once per second. I also noticed that the positive motor terminal had melted the plastic surrounding it. The robot was only under a moderate load.

Language: Java
Controller: Black Jaguar (PWM) 2012 KOP model.
DriveTrain: Direct Drive

Any Ideas?
What do you mean by Direct Drive; motor directly connected to the wheel?

Did you notice it going into the Current Fault mode (Blinking amber-red with at couple second cutout) when you were driving around?

Please post more details like what motor you were using, gear ratios, etc.

Carefully unscrew the case and open up the Jaguar and look for any more visible damage. Pop out the PCB gently. The fan cable is connected via a connector and you risk breaking the fan if you aren't careful.

You may also want to take a look at the Jaguar FAQ. It lists some common symptoms and what their common issue/fix is. I'm not saying that the FAQ has your exact failure mode, but you may recognize some symptoms and that can help pinpoint the cause.

-David