Control motor direction
Randall
Posts: 5
I have a motor that reverses direction depending on which lead the positive voltage is applied to. Reversing the voltage has no affect, and this appears to be the only way motor controllers will control motor direction (H-bridge). This motor runs at 24V/9A which is also a bit of a challenge. I know I could hook up a separate relay for each direction, but solid-state relays that handle this load are expensive. Does anyone have any other ideas on how I can control the direction and speed of this funky motor? Thanks!!
Comments
Changing the leads (presuming there are only TWO) and reversing the voltage, should be the same thing, IF this is s DC motor. How do you differentiate those two methods?
If necessary. please provide a diagram, or simple sketch.
Regards,
Bruce Bates
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· That'll be a big relay (9A!).
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Chris Savage
Parallax Tech Support
csavage@parallax.com
I have seen some 110V AC/DC motors that were wound that way. It's a bit of a pain to deal with. You can still change direction if you use a SPDT (single pole double throw) relay, but you will need another means to turn it ON/OFF and/or change the motor speed.
/code
CW·· ====
············· · ·· *=== Power + (common pole)
············· ·||/
············· ·||
CCW ====
code/
Regards,
Bruce Bates
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BTW, before I knew how this thing was wired I tried hooking it up in a way that ended up trying to run in both directions. The smoke didn't smell very good.
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·1+1=10
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·1+1=10
I wrote the explanation as though you understand the principles of transistors. If you dont and want some more explanation, ask.
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·1+1=10
Post Edited (Paul Baker) : 3/22/2006 3:57:42 AM GMT
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·1+1=10