Messer Cutting & Welding K4 Operations Instructions download pdf (Page 45)

4 Description of control M200 / M210 (optional)

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4.9 Function sequence in operating modes

4.9.1 Explanation of signs and functions

Table :

Symbol Meaning

Press torch trigger

Release torch trigger

Shielding gas flowing

Welding power

Wire electrode is being discharged

Wire creep

The wire electrode does not reach the workpiece at full speed.

This facilitates reliable, spatter-free ignition.

Wire burn-back

Advantage: Prevents fusing of the wire electrode in the weld pool.

Wire back-burn set too high: large drops developing on the wire electrode result in

poor ignition properties or the wire electrode fusing onto the welding nozzle. Wire back-

burn set too low: Wire electrode fuses to the weld pool.

Gas pre-flows

Gas post-flows

The purpose of the gas post-flow is to prevent crater formation in the welding material

by keeping it surrounded with shielding gas until it solidifies.

Time

Non-latched

Latched

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 89 90

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Messer Cutting & Welding K4 Operations Instructions Page 45