Brake/Coast Jumper
 

Posted by Adrian Wong at 2/18/2001 11:42 PM EST


Student on team #596, Hopkinton Hillers, from Hopkinton High School and Zymark & Computer Associates.



Just a quick question..

On the Victor Speed Controllers, there are three pins for the Brake/Coast settings. Am I correct in saying that having the jumper connect to pins A and B will brake the motor and pins B and C will coast the motor?

I would test this myself on our robot, but all our motors are down in the machine shop getting modifications.

Thanks! (Too anxious for the Feb. 20 ship date, had to impulsively post this thread.)

Re: Brake/Coast Jumper
 

Posted by Joe Ross at 2/19/2001 2:16 PM EST


Engineer on team #330, Beach Bot, from Hope Chapel Academy and NASA/JPL , J&F Machine, and Raytheon.


In Reply to: Brake/Coast Jumper
Posted by Adrian Wong on 2/18/2001 11:42 PM EST:



: On the Victor Speed Controllers, there are three pins for the Brake/Coast settings. Am I correct in saying that having the jumper connect to pins A and B will brake the motor and pins B and C will coast the motor?

Yes

Re: Brake/Coast Jumper
 

Posted by Josh Vetter at 2/19/2001 11:55 PM EST


Student on team #548, Robostangs, from Northville High School and BOSCH.


In Reply to: Re: Brake/Coast Jumper
Posted by Joe Ross on 2/19/2001 2:16 PM EST:



We haven't tried the brake at all, but there is a motor that we certainly could benefit from the use of it. I have a question about it though. If what it does is basically short the terminals, will it drain the battery?
Thanks
Josh Vetter

: : On the Victor Speed Controllers, there are three pins for the Brake/Coast settings. Am I correct in saying that having the jumper connect to pins A and B will brake the motor and pins B and C will coast the motor?

: Yes

Re: Brake/Coast Jumper
 

Posted by Joe Ross at 2/20/2001 3:59 PM EST


Engineer on team #330, Beach Bot, from Hope Chapel Academy and NASA/JPL , J&F Machine, and Raytheon.


In Reply to: Re: Brake/Coast Jumper
Posted by Josh Vetter on 2/19/2001 11:55 PM EST:



: We haven't tried the brake at all, but there is a
motor that we certainly could benefit from the use of
it. I have a question about it though. If what it
does is basically short the terminals, will it drain
the battery?

It only shorts the output to the motors and doesn't
affect the input from the battery. You can easily see
this
effect on the fisher price motors, if you have a free
one.

First try turning the output shaft when the motor is
disconnected. It should be possible to backdrive the
motor. If you then get someone to connect the two wires
coming from the motor, you will find that is MUCH
harder to turn the output shaft.