How to drive a treadmill PMDC motor?

instrument · Sep 4, 2014

Hi, I have a ZYT84-52 permanent magnet 180V DC treadmill motor, 1.25HP, 6.8A. I'm wondering how to drive it in 220V AC grid? With other words I need a circuit for speed control of this motor from zero to max with a potentiometer(stepless). Any ideas?

Someone Somewhere · Sep 4, 2014

Simplest way is a variac and then a bridge rectifier.

Note: Don't turn it above about 150V~.

instrument · Sep 4, 2014

Thanks for the fast reply, but I was thinking about all-electronic way to do this, something like electronic circuit with rectifier, MOSFET stage for example and PWM module (in the treadmill the speed control is realized the same way). Unfortunately I don't have a variac and I would like to recover the treadmill in order to be used again. The problem is that the controller is damaged, so I want the user to drive the motor by hand with a pot. I tried some ways, but the circuit breakers fall down every time I power the PCB on.

Someone Somewhere · Sep 4, 2014

You'd need to start at 0% - the inrush currents would probably be pretty high if you tried to run it at full power from a standing start.

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How to drive a treadmill PMDC motor?

instrument

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Someone Somewhere

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instrument

Reputable

Someone Somewhere

Titan

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