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Unread 30-01-2012, 11:37
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
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Re: Spike motor control

fovea,
The robot rules restrict the CIMs and FP motors to speed controllers only. I however, recommend that teams be very careful when choosing what devices to use. The Spike is only designed to switch 20 amps, based on the specifications of the relay contacts used. However, several other motors have high stall currents as well. Some of the Banebots, AndyMark and possibly even an ARA motor since we have no specs on what motors teams may find all have higher stall currents than should be used with the Spike. While the Spike has worked for years in controlling the compressor, the old one only draws 25 amps for a short duration during start and then falls to 12 amps. The new compressor is just a little less. It is for this reason on the compressor Spike only, can the fuse be replaced with a 20 amp breaker.
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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.
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