DMM Dyn4 & 1KW AC Servo motor reliability & quality

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Thread: DMM Dyn4 & 1KW AC Servo motor reliability & quality

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    Default DMM Dyn4 & 1KW AC Servo motor reliability & quality

    I'd like to hear from those that have used the latest interation of DYN4 and their 1KW and larger AC servo drives. I know in a recent thread that MACTEC suggests they are almost on par with Yaskawa, but there is such a price spread its hard to imagine.

    Anyone use them to retrofit a Vertical Machining Center or CNC Knee mill? Great for intermittent hobby/light commercial use or will they stand up to the rigors of daily VMC use?

    Thanks in advance for any feedback. Service after the sale and repair comments appreciated as well.
    Marty

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    Default Re: DMM Dyn4 & 1KW AC Servo motor reliability & quality

    I'm there right now in setting up a knee mill with DMM product seems to be a good bang for the buck, knee 1000 for Z watt and 750 watt on X and Y.



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    Default Re: DMM Dyn4 & 1KW AC Servo motor reliability & quality

    Quote Originally Posted by flyeribe View Post
    I'm there right now in setting up a knee mill with DMM product seems to be a good bang for the buck, knee 1000 for Z watt and 750 watt on X and Y.
    Keep us posted. I'd like to know how you make out with tuning and how well it works for you. I assume you are using step and direction input?
    What motion controller are you going to use? Centroid will have a nice step and direction motion controller coming out soon. Drop down to the AJAX forum and look for ACORN.



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    Default Re: DMM Dyn4 & 1KW AC Servo motor reliability & quality

    Quote Originally Posted by Marty_Escarcega View Post
    I'd like to hear from those that have used the latest interation of DYN4 and their 1KW and larger AC servo drives. I know in a recent thread that MACTEC suggests they are almost on par with Yaskawa, but there is such a price spread its hard to imagine.

    Anyone use them to retrofit a Vertical Machining Center or CNC Knee mill? Great for intermittent hobby/light commercial use or will they stand up to the rigors of daily VMC use?

    Thanks in advance for any feedback. Service after the sale and repair comments appreciated as well.
    Marty
    This was a test with there legacy Dyn2 low voltage Drives, there is basically very little to do with tuning, they have , Adaptive Tuning Technology, which tunes the servo drives to what ever ( work load ) the servo motor is doing, there encoder feed back is also, a worlds first, with 8-bit security code, and just 4 wires, which puts them in a class above most other Ac servo systems



    Mactec54


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    For anyone who reads this thread looking for comments on reliability and after-sales service..

    I have a DYN4 drive running a 750kW servo (used for running a spindle on a hobby CNC). The first drive i ordered did have some issues throwing errors over 3500rpm. I worked with Michael at DMMTech to solve the issue which was found to be a firmware mismatch between the drive and the encoder.

    I later ordered another DYN4 as a spare drive. This one initially showed no response. An email to Michael and he prompty send me instructions to reconfigure the drive. 5mins later.. its spinning up to 5000rpm and ready to rumble.

    So from my experience, although there have been some relatively minor issues.. they were sorted out prompty by DMMTech with excellent aftersales service. I feel these drives do require the protection recommended by DMMTech (moulded circuit breaker, magnetic starter, filter, fuses) for reliability.

    Personally, i'm very happy with my purchase overall. Great value for money.



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DMM Dyn4 & 1KW AC Servo motor reliability  & quality

DMM Dyn4 & 1KW AC Servo motor reliability  & quality