Gallery, Projects and General > How do I??
Need Help Wiring DC Motor with PWM
John Rudd:
Snub,
I cant see how to make the drawing any simpler....
The wire connections are all identified by the numbers that appear on the relays....
The "rev-not used" simoly means that the second connection on my switch is not connected to anything.....in reality the relays are either in or off giving fwd or rev.
Might I suggest you get some books on basic electrics and have a read?
I'm always willing to help out, just ask if you're not sure..
daGrouch:
Separate the BATT- from MOTOR- ( electronic circuits like to switch or act on the (-) for some reason).
Power the relay coils from BATT+ instead of PWM+.
Yeah, it looks weird at first glance.
With both relay's OFF both motor leads are connected to PWM- so nothing happens.
With UP relay ON the red motor lead goes PWM+ while black motor wires stays PWM- and motor spins.
With DOWN relay ON red motor wire remains PWM- and black motor wire goes PWM+.
CAUTION: I don't know how the PWM will like having the motor load switched or removed while it's on.
shipto:
beat me to it daGrouch I just did almost exactly the same drawing :beer:
Although the switch would need to be center off or there would be no stopping the motor from running short of turning power off.
RobWilson:
Odd , is that not exactly what I had redrawn in post #3 :scratch:
And clarified in post #7
Rob
daGrouch:
--- Quote from: shipto on June 16, 2016, 11:29:32 AM ---beat me to it daGrouch I just did almost exactly the same drawing :beer:
Although the switch would need to be center off or there would be no stopping the motor from running short of turning power off.
--- End quote ---
That's why my post has so many typo's - I was rushing to post before you! :ddb:
He showed a SPDT-CO so he had center-off covered. He doesn't show if or how he want's to switch the PWM so maybe it's a given. If not then a DPDT-CO could be used instead to power the PWM only when needed provided the PWM retains it's speed setting when powered off.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version