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  1. #1
    Join Date
    Aug 2006
    Location
    Melbourne, Australia
    Posts
    107

    Default Dynasty 350 starting arc query

    I've just bought a Dynasty 350 for myself and got it set up yesterday.
    I know the 350 gives the option on what polarity the electrode starts with.
    Is there a rule of thumb whether it should be positive or negative?
    I'd like to experiment with both polarities but is this only applicable when the machine is set for differing EN/EP percentages or is it applicable to all AC welding on the machine and on all waveforms?
    Regards Andrew from Oz.



    We are tig welders, gravity doesn't worry us.

    Miller Dynasty 350 Tig.
    OTC AVP300 AC/DC 300 amp hybrid wave Tig. (now retired)
    Kemppi MLS 2300 230amp AC/DC Tig for home with all the bells and whistles.

  2. #2
    Join Date
    Oct 2012
    Location
    yuba city, CA
    Posts
    54

    Default dynasty 350 arc starting setups

    Quote Originally Posted by awill4x4 View Post
    I've just bought a Dynasty 350 for myself and got it set up yesterday.
    I know the 350 gives the option on what polarity the electrode starts with.
    Is there a rule of thumb whether it should be positive or negative?
    I'd like to experiment with both polarities but is this only applicable when the machine is set for differing EN/EP percentages or is it applicable to all AC welding on the machine and on all waveforms?
    Regards Andrew from Oz.
    Refer to p.57 of owner's manual:

    'C. Changing Programmable TIG Start Polarity (Dynasty Models Only)'..........the start polarity on AC welding is independent of the EN/EP settings.

    If, if your query is really aimed at taming down the 'Blue Lightning Start'.......then review the other associated pages which define the Blue Lightning start parameters.

    I don't care for the factory pre-set starts in DC or AC--the Blue Lightning--(it's way too violent), so I just jump into the Gen setting menu for tungsten--generally ramping down the start amperage to 20-30 amps, for a very gentle, civilized start as the candle gets lit.
    I haven't bothered to mess with the Gen arc start polarity.

  3. #3
    Join Date
    Aug 2006
    Location
    Melbourne, Australia
    Posts
    107

    Default

    Thanks Dave, I've done as you have and decreased the starting amperage and you're right it gives a much smoother start compared the factory settings.
    On the factory .095" tungsten settings it was as though the starting amps were digging into the material to be welded.
    It's much better using the Gen setting to adjust the start to what I want..
    Regards Andrew from Oz.
    We are tig welders, gravity doesn't worry us.

    Miller Dynasty 350 Tig.
    OTC AVP300 AC/DC 300 amp hybrid wave Tig. (now retired)
    Kemppi MLS 2300 230amp AC/DC Tig for home with all the bells and whistles.

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