Messer Cutting & Welding K4 Operations Instructions download pdf (Page 30)

3 Description of M100 / M110 control

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3.4.4 MIG spot-welding function sequence

Fig. 3/5 MIG spots

Start spot welding

Press and hold torch trigger

• Shielding gas is expelled

• Wire feed motor runs at “creep speed”.

• Arc ignites after the wire electrode makes contact with the workpiece, welding current flows.

• Changeover to pre-selected WF speed.

• Wire-feed motor stops after the selected spotting time expires.

• Arc is extinguished after the set wire burn-back time elapses.

• Gas post-flow time elapses.

End spot-welding

• Spot-welding ends when the pre-selected spotting time expires.

• Early ending of spot-welding with the release of the torch trigger.

Release torch trigger: spot-welding can be resumed.

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Messer Cutting & Welding K4 Operations Instructions Page 30