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Do i need to use this output from my DC motor speed control board? Answered

With the goal of using the DC treadmill style motor that i have in a project (or two), i have baught a SCR speed control board.
The circuitry of the control board has outputs for the armature and field coil (labeled "excitation"). But the motor that i have is a permanent magnet type (2 wires going in / out  - red and black - nice and simple). So i don't need the 'excitation' output. My question is whether the control board needs this to be used? Am i going to fry my brand new controller if i only draw current through the armature output? I could, for instance, put a resistive load accross this output to make it use just less than the output it's rated for.

Here's more info on the parts in question:
The speed controller is like this:  http://www.ebay.com/itm/DC-0-220V-Continuous-Adjustable-Dc-Motor-Speed-Regulator-Control-Board-1000W-/251600102759?pt=LH_DefaultDomain_0&hash=item3a9488e567
or this:  http://www.ebay.com/itm/1x-DC-Motor-Speed-Controller-Adjuster1000W-AC110V-220V-Input-2A-3A-4A-5A-output-/321526825620?pt=LH_DefaultDomain_0&hash=item4adc7e0294
The motor is either of the models on this page (i actually have one of each): http://www.ectrade.com/Auction/FreeSample/1931851586/Electric_treadmill_motor_DC-specific.html

Thanks in advance.

4 Replies

steveastrouk (author)2015-03-28

Theoretically, if there is no field current, the controller should shut down. See what happens, it might work on no field, it won't wreck the control if its not present.

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Thanks for the succinct answer steveastrouk.

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iceng (author)steveastrouk2015-03-28


Wow I sure could use a DC treadmill style motor this next week.

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balisticsquirel (author)iceng2015-03-29

iceng, i might help you out if i was even in the same country as you. :)

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