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Thread: stepper problem

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  1. 10-03-2007, 06:05 PM #1
    Quinchat
    Quinchat is offline Registered
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    stepper problem

    I have a NEMA 23 uni-polar stepper. I'm powering it thru a SOC MC433 controller. Using their test program and pulsing it about 10 times/sec, it runs fine for a while pulling about .3 amp. Every few seconds the motor jumps and current goes to 2 amps. As I increase speed, things get worse and I finally blow a 7 amp fuse.

    This is my first experience with steppers. Any ideas on what I'm doing wrong?

    Thanks,
    Quinchat
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  2. 10-11-2007, 04:28 AM #2
    johnmac
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    Quinchat,
    It's been a week and no answers to your question, so I will give it a try.

    I have one of these boards but have not tried it yet. I have read several posts on this site about problems with these.

    John
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  3. 10-12-2007, 12:55 AM #3
    Quinchat
    Quinchat is offline Registered
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    John,

    Thanks for the info. Since I posted, the supplier has agreed to replace the board.

    Quinchat
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