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Unread 01-02-2002, 09:48
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1996
Location: Wheeling, IL
Posts: 10,770
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There are two types of breakers on the robot. The main breaker/power switch will withstand >200 amp surges of an intermittant variety but is shock sensitive. (i.e. a good hit to one side of the breaker will set it to "off") Do not hard mount it to robot frame and you should have no problems.
The plug-in breakers are a temperature type device. Currents flowing through the breaker heat up the mechanism until it changes shape and "opens". When it cools down, the shape returns to normal and "closes". With high currents this "open/close" cycle can happen very rapidly (several times a second).
So with that knowledge in hand here are the failure modes...Main breaker open will cause no robot function and no rotating light. (remember the rotating light must come on when the robot is enabled or attached to the tether cable per robot rules) Small breaker open will result in intermittant motor operation (looks like something is "bumping" robot and occasional noise from breaker.
Good Luck All
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Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.