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  1. drozone

    how does constant volt welding power supply work

    crowbar; the voltage stays the same. right around the 21 volts i have it set at. drozone
  2. drozone

    how does constant volt welding power supply work

    thanks, crowbar; the short, then, causing the controller to think the gap is too small? i hadn't thought of that. were you thinking in the feed system or the lead to the feeder? although i'm going to check both the feed system seems more likely to me. thanks again...
  3. drozone

    miller 451 power supply running away with the amps

    thank you mark (allj258) so, then, as the gap (arc length) gets larger the amperage would decrease in order to maintain the set voltage. this then means that as the arc length changes, if all other parameters stayed the same the voltage would change, getting larger as the gap gets larger in...
  4. drozone

    miller 451 power supply running away with the amps

    hello! this p.s. is controlled by a 1DW-1 wire feedspeed/voltage controller. luckily the robot has 5 torches so i can swap parts. i've swapped every board, relay, and component with no success. i tested the feed rate and it changes when i change the input value.i've checked all the cables...
  5. drozone

    how does constant volt welding power supply work

    thanks, lewish, but the problem is that the p.s is running away with the amperage. i. e. whatever wirefeed speed i run it pegs at 550 amps. it is controlled by a remote wire feed / voltage contraoller. i've changed every board, relay and component in the loop(luckily the robot has 5...
  6. drozone

    how does constant volt welding power supply work

    i know that the amperage changes with the wire feed speed and also during the weld by the size of the gap. the question is how does it know that the gap is different? the output is controlled by changing the pulse rate of the scr's but is this controlling the voltage or the amperage or both? in...

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