Reasonable price MIG with REMOTE input

  1. gmankev New Member

    Messages:
    4
    Location:
    dublin, ie
    HI,
    I am looking for a reasonable price MIG with remote input to control trigger, wire speed and Voltage.
    I have access at the moment to a Thermal arc 320 SP but its price of 6300 GBP or there abouts breaks the budget. Hoping I can get down to 1--3 k GBP

    EUROCONNECTOR of course, range of AMPS should be low.

    Perhaps remote is only available on high end machines, but I wanted to ask.

    This is for simple CNC trial and investigation.
     
  2. rtbcomp

    rtbcomp Moderator Staff Member

    Messages:
    18,615
    Location:
    Sheffield UK
    Welcome to the forum. If you can't find what you want would a relay with normally open contacts wired across the trigger do the job?
     
  3. gmankev New Member

    Messages:
    4
    Location:
    dublin, ie
    Yes, that is the default option, just do a relay across the trigger. That should work fine. However in some scenarios we want to vary V and wire speed as well.

    There is standard schematic for the more expensive welders showing that if you put a Variable Resistor and vary a supplied voltage between 0 and 10v you can control the wire speed and V aswell. So to find the cheapest welder with that input would be great.

    I can build the controls myself, but need to find the right welder.
     
  4. hotponyshoes Member

    Messages:
    1,117
    Location:
    Somerset. Uk
    If you can build the controls then just extend the wires from the switches you want to use on the welder to a remote pendent/location.

    If you are feeling fancy you could re-route the switch wiring you wanted to use through a change over switch and fit a multiplug for the remote onto the welder somewhere
     
  5. no idea Member

    Messages:
    127
    May be worth a conversation with Tec-Arc - their machines have a number of standard options so this may be something they can do too?
     
    eLuSiVeMiTe likes this.
  6. DTS Member

    Messages:
    163
    Location:
    Rugby
    maybe a s/h Miller XMT with separate wire feed?
     
  7. Brad93

    Brad93 M J B Engineering

    Messages:
    5,639
    Location:
    Essex
    Richard. likes this.
  8. Richard.

    Richard. Member

    Messages:
    18,006
    Location:
    Cambridgeshire
    Yes the Lorch S3 mobile is the perfect spec as a replacement for the sp320.
    It’s the same machine but with heavily revised software and massively improved pulse processes (Speed/Twin pulseXT)
    https://www.mig-welding.co.uk/forum/threads/lorch-speedpulse-xt.62383/

    The RC20 control can offer the full adjustment scope on amperage(WFS), voltage(arc length) job selection and dynamics. Can also be fitted with a top button for starting the arc.
     
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  9. eddie49 Member

    By "remote input" do you mean a manually-operated control box, or a wired connection to control signals provided by the CNC equipment?
    If the latter, are these signals digital or analogue?
     
  10. Richard.

    Richard. Member

    Messages:
    18,006
    Location:
    Cambridgeshire
    He specified to control wire speed and voltage so I’d assume it’s a simple external remote control.
     
  11. gmankev New Member

    Messages:
    4
    Location:
    dublin, ie
    In our case we will be using programmable potentiometers and relays to drive the weld action. The potentiometers and relays are connected to a host computer running a test system. At the moment the,. weld current is sank into a thermal load, ulitimately we integrate with a CAD system.

    As this is a trial, we just need to find a suitable welder at the moment.

    By the way is there an open standard for defining weld patterns in CNC. I know of g-Codes for CNC machines, can weld information be specified similar.
     
  12. DTS Member

    Messages:
    163
    Location:
    Rugby
    Programmable pots? Anyway.. big issue with welding robots is the collision avoidance. I wouldn’t fancy doing one from scratch, unless it was to weld in a straight line..
     
  13. gmankev New Member

    Messages:
    4
    Location:
    dublin, ie
    The CAD problems are for a much later stage.. Just need to be able to control a MIG welder wire, voltage and trigger. Trying to find a reasonable price single phase welder to do that.
     
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