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Electric brake

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Mikelkie

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Nov 19, 2017
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I was getting tired of stopping the drill by hand or wait for it to stop by itself
to change from drill bit to a tap.
So i build and fitted a dc electric brake and foot switch. It stops almost immediately now
and a pleasure to use with both hands free.
 

Bob Korves

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I was getting tired of stopping the drill by hand or wait for it to stop by itself
to change from drill bit to a tap.
So i build and fitted a dc electric brake and foot switch. It stops almost immediately now
and a pleasure to use with both hands free.
Tell us more. Pics, too.
 

Mikelkie

Newbie
Registered
Joined
Nov 19, 2017
Messages
13
The wiring consists of two contactors each with two sets normally closed (n/c) auxiliaries to avoid the closing of a contactor whilst the other one is closed. ie. electrical interlock
The second set of n/c aux. is to close the brake contacor to inject a dc current into the
running winding of the motor, supplied by a transformer and bridge rectifier.
The timer is set to energize the brake cotactor for the period needed to stop the motor. I also included a foot switch forward and reverse then it leave both hands free
to locate drill points etc. I hope the diagram is legible. I will answer any question where
possible. Thanx for the interest shown
MikeSAM_1044.JPGSAM_1046.JPG
 
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