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Millermatic 180 wire speed problem

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  • Millermatic 180 wire speed problem

    I run a body shop and have a millermatic 180 with autoset. The wire feed starts slow then speeds up after maybe a second or so on all speeds. Is this normal or is there a setting that is making this happen? or is it junk. It makes it very difficult to get a good fill in weld on a spot weld when the wire is changing speeds - PLEASE HELP!!

  • #2
    Thats Run-in speed, in this case they call it tracking speed. have a look see in your owners manual on how to turn it off.

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    • #3
      You can't turn the run-in (Smooth Start) off on the MM 180.

      Depending on how you configured it, the edition of MM 180 prior to the current auto-set unit, did offer the option of the unit being either a wire speed tracking or a constant wire speed unit.
      Last edited by Danny; 07-14-2009, 10:45 AM.

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      • #4
        They call it wire speed tracking in the autoset, and yes you can adjust it according to the owners / tech manual. Very simple, and same as the last version of the mm180

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        • #5
          run in speed

          I tried to turn off the tracking speed (same as run in speed?) but it will not shut off with the procedures in the owners manual - does anyone know how to shut it off?
          It says to:
          power switch off
          voltage knob to max
          speed knob to min
          hold trigger and turn on power switch

          after doing this if I pull the trigger the temp light just flashes multiple times in random sequnce. It will not feed until you turn the power off and on again

          Any other thoughts?? Any help is greatly appreciated.

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          • #6
            Well after it flashes release the trigger, it does it's set up, then your off to the races.

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            • #7
              Run in and wire speed tracking are TWO completely different things.

              Run in is at the beginning of the arc start where the wire speed IS lower than the preset in order to assist with cold wire starts.

              Wire speed tracking is where the wire speed increases or decreases as VOLTAGE control s increased or decreased in order to help the operator stay within the weld parameters when making voltage changes.

              They are not the same thing and only the wire speed tracking can be disabled.

              andy
              Last edited by ASKANDY; 07-14-2009, 01:06 PM.

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              • #8
                Thank you.

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                • #9
                  Yes I should have clarified after reading the owners manual, but if he were to turn off the voltage tracking, then his wire shouldn't have started out slow, instead set to what ever he had on his dial

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                  • #10
                    No.
                    Run in or ramp up time is a preset function on the pcb and is not user adjustable on this model and not tied to wire tracking.
                    Most all our mig machines have some sort of ramp up or run in at the beginning of the arc start.
                    Advanced machines like the MM 350 series can be adjusted in the set up menu.

                    A-

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                    • #11
                      "Ramp It Up"

                      Originally posted by ASKANDY View Post
                      No.
                      Run in or ramp up time is a preset function on the pcb and is not user adjustable on this model and not tied to wire tracking.
                      Most all our mig machines have some sort of ramp up or run in at the beginning of the arc start.
                      Advanced machines like the MM 350 series can be adjusted in the set up menu.

                      A-
                      Andy: It's what the 212 (last year's model) calls "Active Arc Stabilizer?"

                      Dave
                      "Bonne journe'e mes amis"

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                      • #12
                        The active arc stabilizer is the inductor that smooths the arc. When mig welding, the wire shorts to the work piece hundreds of times/sec. This is what causes the sizzle/crackling sound. When it shorts, the current spikes high and the wire burns off. In order to keep the current from spiking too high and burning the wire to the contact tip, the stabilizer will choke some of it and smooth the current transition allowing the wire to burn more smoothly.
                        The stabilizer (also called an inductor) works best in a certain range. This is why you will find most transformer/rectifier machines work great in the mid range but not as well on the bottom end or extreme top end.
                        The active arc stabilizer's core design widens this sweet spot and helps with starting when the arc needs higher current to start but not as much when the arc is running.
                        It is how the stabilizer is made and not user adjustable like run in.

                        Hope this helps.

                        Andy

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                        • #13
                          Mm 212

                          Andy: Thank you for explaining that!

                          Dave
                          "Bonne journe'e mes amis"

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                          • #14
                            Is there a pot on the control board to adjust the ramp up sequence?

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                            • #15
                              On the MM180 AS , there is no wire feed speed tracking feature. Both the voltage and the feed speed are completely independant of each other . Wire feed speed tracking voltage cannot be turned on .
                              This feature is only available on the non A/S models where it can be turned on or off by the user .
                              The A/S model uses a different internal PC board than the non A/S model .
                              If you try to turn on the wire feed speed tracking using the same start up proceedure as the non A/S model , the over temp light will blink , and it simply will not work .
                              Last edited by Mustang; 07-16-2009, 06:15 PM.
                              Miller MM252 with Bernard Q300
                              Hypertherm PM30

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