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DM1E-M-D power source?

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  • DM1E-M-D power source?

    It's labeled for a 10-36 VDC supply, so it should run on 12-15VDC car electrical, or are there other factors to consider?

  • #2
    Nope. We built it to be powered by either 12V or 24V, and provided reasonable margin at either end.

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    • #3
      Originally posted by TheGreatMarklar View Post
      It's labeled for a 10-36 VDC supply, so it should run on 12-15VDC car electrical, or are there other factors to consider?
      We started putting BRX's on everything....... so when the governor went out on our manlift......we put a BRX on there. It's a gasoline motor and the uses a dc throttle via PWM.
      BRX can control the RPM real nice, the only issue is on startup there is a severe voltage drop and the PLC reboots until the motor is running. And some alternators don't start charging until they have reached a certain RPM.So what happens is the BRX starts applying PWM, the voltage drops below 10V, it reboots, comes back on and cycle repeats until the alternator starts charging.
      I guess I could add a DC-DC converter or change the battery. Just something to consider.

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      • #4
        Originally posted by TheGreatMarklar View Post
        It's labeled for a 10-36 VDC supply, so it should run on 12-15VDC car electrical, or are there other factors to consider?
        Amperage, obviously. Be sure to use a power supply with enough umph. We see quite a few folks trying to run a PLC or HMI off of a wall wort, doesn't work very well usually.
        If you have an urgent issue, please contact AutomationDirect's Technical Support team.

        AutomationDirect.com Technical Support: 1(800) 633-0405 or (770) 844-4200 Email Tech Support

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        • #5
          I think pbw's comment bears repeating: " the only issue is on startup there is a severe voltage drop and the PLC reboots until the motor is running. " on conventional cars the voltage drop can be very significant. A hybrid with their different battery situation may not have a problem, but with a conventional car one needs to consider the drop. There are "super capacitors" made for car audio peak leveling that have impressive ratings. While I personally am skeptical of those ratings, if they were true, a diode and a large capacitor might be an easy solution. A diode and a moderate size "gel cell" battery would be a more trustworthy source of power, but being sure the auxiliary battery stays charged might add complexity. An electronic boost regulator might be the best option, but it is a much more complex device, though of course one would want to just buy one, not build it from scratch.

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          • #6
            Several of our DirectLogic customers used a DC to DC convertor and a large capacitor to do the ride through. This approach could possibly work for BRX as well.
            If you have an urgent issue, please contact AutomationDirect's Technical Support team.

            AutomationDirect.com Technical Support: 1(800) 633-0405 or (770) 844-4200 Email Tech Support

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            • #7
              Awesome, thanks for the feedback

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