750A control box problem

Discussion in 'Direct Drilling Machinery' started by Neddy flanders, Oct 24, 2018.

  1. low level sensor not working,
    infact none of the sensors on any shafts or fan are working, yet fan speed is and tramliners are. any help appreciated
  2. all_arable

    all_arable Member

    Have you turned the sensors off?
  3. Simon Chiles

    Simon Chiles DD Moderator

    Which control box do you have, is it an ESC?
  4. maybe, didn't know you could?
  5. black with white face, small screen at top, keypad underneath. landwheel drive not electric motor. Accord/ KV on box Yes ESC
    Last edited: Oct 24, 2018
  6. Simon Chiles

    Simon Chiles DD Moderator

    Like this

    It should talk to a signal distribution box that forms the link between the separate sensors and the actuators. I’d imagine that the lead between it and the ESC box is broken/disconnected/dirty joint(s).
  7. yes, none of the alarm signals are working, no noises atall
  8. Simon Chiles

    Simon Chiles DD Moderator

    Just looked in the manual at the fault section and a common fault for the fan, and wheel sensor is cable in signal distribution box. Brown=+12v, Black=signal, blue=Ground. The metering device is green/yellow=signal if the photo of the page doesn’t come out well.
  9. thanks. been using box for 10yrs without problem so cant see its to do with wires. have I pressed a combination of keys to override alarms. also its a different tractor, still a JD thou with same power plug

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