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Unread 31-10-2011, 09:36
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Al Skierkiewicz Al Skierkiewicz is offline
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Re: Pneumatics WiFi issues

Quote:
Originally Posted by IndySam View Post
The only thing we could figure was the pneumatics and cRio are the only things on the 24vdc power and that somehow created problems with the ground.
Sam et al,
We have found that electrical issues occur when the Crio finds a common point on the frame and another electrical component also finds a common point somewhere else on the frame. Often this is a shorted motor or motor wire that has become frayed. When the device is powered, it is possible to subtract from the Crio power supply through the frame of the robot. The result is generally a reset of the Crio, an event that can last from 20 seconds to nearly 50 seconds dependent on software loaded. In your case it sounds like the Crio chassis was connected to robot frame while one of the pneumatic valves +24 volt was touching the robot frame. A pneumatic command would then short the +24 volt power to the Crio. The negative lead of the power supply on the Crio is connected to the chassis. It is for this reason that the Crio must be insulated from the frame of the robot.
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www.wildstang.org
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