Need Help! MOSFET replacements for DM860H stepper drivers.


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Thread: MOSFET replacements for DM860H stepper drivers.

  1. #1
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    Default MOSFET replacements for DM860H stepper drivers.



  2. #2

    Default Re: MOSFET replacements for DM860H stepper drivers.

    I had an ma860h fail earliert his year and i got it running by replacing all the mosfets with irf640z . i think it might have had irf540s originally but i only had the 640s on hand and it got it working again. I replaced all 8 mosfets to be safe even though only 2 failed



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    Default Re: MOSFET replacements for DM860H stepper drivers.

    Quote Originally Posted by Zvonkorp View Post
    I had an ma860h fail earliert his year and i got it running by replacing all the mosfets with irf640z . i think it might have had irf540s originally but i only had the 640s on hand and it got it working again. I replaced all 8 mosfets to be safe even though only 2 failed
    I apologize for not replying sooner but I was required to do some fieldwork.

    I thank you for your interest. I finally found the parts and the drive is up and running. Fortunately the damage was restricted to the output transistors.

    I do agree with your suggestion of replacing the whole set, that is the 8 MOSFETS. That´s far better than risking another costly machine timedown.

    Thanks again.

    Regards.



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MOSFET replacements for DM860H stepper drivers.

MOSFET replacements for DM860H stepper drivers.

MOSFET replacements for DM860H stepper drivers.