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Fly back diode needed for ibt2s

Discussion in 'Electronic and hardware generally' started by Josh Latka, Feb 6, 2025 at 07:33.

  1. Josh Latka

    Josh Latka New Member

    Joined:
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    My Motion Simulator:
    2DOF
    I’m currently putting a 2dof rig together
    Can anyone tell me if a fly back diode is going to be needed using ibt2 controllers ?
    And if so how to install?
    Are they needed between h bridge and psu ?
    Or between motor and h bridge
    From what I can find it looks like they go between h bridge and motor connecting motor leads with the fly back between
    I’m using 24v psu and don’t want to use a battery on the circuit
    I will be running a good amount of amps to drive the motors. Is this something I should be concerned about or not with ibt2 drivers wired as described

    Attached Files:

    Josh Latka, Feb 6, 2025 at 07:33
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Innovative tech specialist for NGOs
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    St Helens, Tasmania, Australia
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    +10,947 / 54 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    Fly back diodes are not normally used.

    But be aware other members have reported running IBT2s at a full 24v can cause reliability issues, so many drop the voltage down a bit.

    It is also worth testing IBT2s before use, as members have also reported faults with brand new IBT2 boards.
    noorbeast, Feb 6, 2025 at 08:00
    #2