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IndustryArena Forum > CNC Electronics > Servo Motors / Drives > DMM Servos with DYN4 Drives on G0704 Random Alarm Issue
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  1. #21
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    Join Date
    Jan 2005
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    10695

    Re: DMM Servos with DYN4 Drives on G0704 Random Alarm Issue

    Quote Originally Posted by mikegiraud View Post
    Ok, I'm understanding a bit better. My max frequency settings are set at the default 256. I don't have homing setup yet, so the homing speeds are all 0 at the moment.
    Ok in General Config. for Mach3 look for Lock Rapid if this is checked uncheck it and try again you may be able to lower the rapid moves with the slider on the Mach3 screen under feed rate slider for Rapid this will help to not over load the motors
    Mactec54

  2. #22
    Registered
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    Jan 2016
    Posts
    67

    Re: DMM Servos with DYN4 Drives on G0704 Random Alarm Issue

    Mactec54, thanks for the help. I've thrown in the towel. I've uninstalled the 400W servos and drives. They will ship back to DMM for exchange to 750W Nema34 motors and DYN4-H drives. I'll feedback in 2 weeks once I have the 750W motors installed. I think this is the overall best path for machine reliability. The 750W motors should allow some solid rapids on the G0704. Thanks again for the help.

    Sent from my SM-G892U using Tapatalk

  3. #23
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    Jan 2016
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    67

    Re: DMM Servos with DYN4 Drives on G0704 Random Alarm Issue

    Wanted to follow up on this to close out the issue for anyone who may choose DMM 400W Nema 23 motors for a G0704 sized machine using direct drive. It turns out that the 400W Nema 23 motors from DMM and the Dyn4-L drives at 120VAC are a bit marginal for the G0704 X and Y axes. I returned them, installed the 750W Nema 34 motors with Dyn4-H drives at 240VAC and the random alarm issue hasn't appeared in a few days of machining. So in short, stay with the Nema 34 motors or use a 2:1 reduction if you must use the 400W motors.

    I'll reiterate that DMM was absolutely awesome to work with. They provided support above and beyond not only with this issue, but the RMA process was fast and smooth. Also, they took the time to sketch up some wiring diagrams specifically for my BOB and held my hand through wiring up the 24VDC Z-axis brake. I'll definitely be using DMM servos on my future projects.

    Thanks again to Mactech54 and those who chime in to help.

    -Mike

    Sent from my SM-G892U using Tapatalk

  4. #24
    Member
    Join Date
    Jan 2005
    Posts
    10695

    Re: DMM Servos with DYN4 Drives on G0704 Random Alarm Issue

    Quote Originally Posted by mikegiraud View Post
    Wanted to follow up on this to close out the issue for anyone who may choose DMM 400W Nema 23 motors for a G0704 sized machine using direct drive. It turns out that the 400W Nema 23 motors from DMM and the Dyn4-L drives at 120VAC are a bit marginal for the G0704 X and Y axes. I returned them, installed the 750W Nema 34 motors with Dyn4-H drives at 240VAC and the random alarm issue hasn't appeared in a few days of machining. So in short, stay with the Nema 34 motors or use a 2:1 reduction if you must use the 400W motors.

    I'll reiterate that DMM was absolutely awesome to work with. They provided support above and beyond not only with this issue, but the RMA process was fast and smooth. Also, they took the time to sketch up some wiring diagrams specifically for my BOB and held my hand through wiring up the 24VDC Z-axis brake. I'll definitely be using DMM servos on my future projects.

    Thanks again to Mactech54 and those who chime in to help.

    -Mike

    Sent from my SM-G892U using Tapatalk
    That's good you are up and running, Dmm are great :cheers:
    Mactec54

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