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| Need Help Wiring DC Motor with PWM |
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| 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. |
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