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24v power supply ? What do you use

Discussion in 'DIY Motion Simulator Projects' started by Gadget999, Mar 12, 2020.

  1. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    My sim is running 6x 24v dc brushed motors

    Inhave 2x 12v car batteries

    I have 2x 12v power power supplies that are approx 72 amps each

    However they can not be powered up together so they run one 12v battery each

    What options do i have for a 24v power supply ?
  2. Robdog

    Robdog Member

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    I also have 6 24v motors which I run from 2 car batteries. I just use a battery charger that is capable of charging at 24v, it doesn't quite keep up with the power consumption of the motors but I have never yet flattened the batteries. I leave the charger on permanently so the batteries are always charged the next day.
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  3. mrbean_phillip

    mrbean_phillip New Member

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    Look into the MeanWell SDR series power supplies, they have options for serial/parallel linking.

    I always use these SDR supplies for high-end DD wheels.

    Cheers,
    Beano
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  4. Typhoon56

    Typhoon56 Member

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    Hi @Gadget999 what 12v power supply are they ? I use two 12v server power supply, had to isolate the DC ground on them both to get them to work correctly.
  5. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
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    i was hoping there was a solution like this - the power supplies i use are Dell PowerEdge A870P-00 870W

    what did you do to isolate the grounds ? is the ground connected to the case of the psu ?
  6. Typhoon56

    Typhoon56 Member

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    My Motion Simulator:
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    Yes the ground is attached to the case, I had to remove two screws that held the main board down, I then slipped some non conductive material (cardboard)between and not replace the screws.

    Found a very helpful series of videos on YouTube, was a guy building a mini lath he used the server power supply.
  7. Gadget999

    Gadget999 Well-Known Member

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    did you use 2x 12v servers psu to get 24v ?
  8. Gadget999

    Gadget999 Well-Known Member

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  9. Typhoon56

    Typhoon56 Member

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    My Motion Simulator:
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    Yes I'm using two 12V to achieve 24V, removing one ground did work , but I had trouble with my motor driver and Arduino but after removing the other ground on the other power supply this fixed that problem, so I would advise to remove all DC grounds .

    IMG_20200314_064444715.jpg
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  10. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
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    Thanks for the suggestion, i removed ground on one motor only and still had one psu throw a fault.

    I will try them both wired together for 24v
  11. Gadget999

    Gadget999 Well-Known Member

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    ok so I removed the ground on the power supplies and it was possible to get them to work together either as 12v or together at 24v

    however it seems that they were not very good at dealing with shock loads and one of them would often shut down

    the power supplies were 870 w Dell A870P

    i had a Dell A930 P lying around from a steering wheel project and tried that - it seemed quite good so i bought another

    I can confirm the Dell A930P is an excellent power supply and is resistant to shock loads

    it is much bigger than the 870 and appears to have much larger components like caps inside it

    the only down side is the noise from the fans - but i am sure i can box them up to keep noise to a minimum