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Unread 12-03-2010, 13:11
sanddrag sanddrag is offline
On to my 16th year in FRC
FRC #0696 (Circuit Breakers)
Team Role: Teacher
 
Join Date: Jul 2002
Rookie Year: 2002
Location: Glendale, CA
Posts: 8,510
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Caution - Burned out CIM blows Victor

Had a bit of an interesting happening with some Victors the other night. We discovered the hard way (3x over) that a burned out CIM motors can easily blow the transistors on the Victor, before the breaker to the input will ever trip. I suspect that when the CIM motors run for too long, they overheat, causing the insulation on the windings to degrade, thereby causing an internal short. When we disassembled the motor, it was all black inside. So, be careful with how long you run your robot for at a time during practice, and check the temp of the motors often, or you may find yourself replacing a Victor.
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Teacher/Engineer/Machinist - Team 696 Circuit Breakers, 2011 - Present
Mentor/Engineer/Machinist, Team 968 RAWC, 2007-2010
Technical Mentor, Team 696 Circuit Breakers, 2005-2007
Student Mechanical Leader and Driver, Team 696 Circuit Breakers, 2002-2004