Kemppi MasterTig MLS 3000 ACDC Operating Manual

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Contents

Kemppi MasterTig MLS 3000 ACDC Operating Manual Manual pdf 16 page image

EN3. MiX Tig (mixed current aC/DC-)With mixed current frequency and balance of alternating current are determined byadjustments made for AC-current. Adjust by choosing sections 4. – 5. if needed.The following QuiCk seTup parameters can be adjusted:1. AC-time (AC 10 ... 90 %, factory setting 50 %)2. Cycle time (CYc 0.1 ... 1.0 s, factory setting 0.6 s)3. DC-current (DC(-) 50 ... 150 %, factory setting 100 %)4. Balance (bAL -50 … 0 … +10 %, factory setting –25 %)5. Frequency (FrE 50 … 250 Hz, factory setting 60 Hz)6. Selection of AC waveform, sine or square wave (SinuS/SquArE)7. Hot Start time for the 2T function (H2t 0.1 s…5.0 s, factory setting 1.0 s). Can be seen only onthe 2T function.Factory setting is marked with a dot after the numeric value.Growing DC-current increases penetration but decreases cleaning effect.4. DC- (or DC+) (direct current)Hot Start time for the 2T function (H2t 0.1 s…5.0 s, factory setting 1.0 s). Can be seen only onthe 2T function. You can see recommended diameter for electrode by pressing QUICK SETUP-button. Diameter depends on current adjustment.HF/contact ignition in Tig welding (water fill)TIG arc can be started either with high frequency (HF) or with contact ignition. HF ignition ischosen by pressing the HF CONTACT button to turn on the HF light.If you use water-cooled torch you can fill it with water by pressing the HF CONTACT button formore than 2 seconds. The display reads ’COOLER’.welding torch switch 2T functionGas flow starts when the torch switch is pressed. Welding starts, and the current will rise tothe Hot Start current within the up-slope time, remain at that level for the set time (H2t) andthen change to the welding current. The Hot Start function can be disabled and green panellight switches off when the Hot Start current is adjusted to 100 %. The current will then risedirectly to the welding current level within the up-slope time. Release the torch switch, andthe current starts to drop, and after the selected down-slope time the arc is broken. After this,the shield gas will flow for the time selected.welding torch switch 4T functionGas flow starts when the torch switch is pressed. Release the torch switch. The ignition sparkignites the arc, and the current will rise to the Hot Start current within the up-slope time. Youcan switch from Hot Start current to welding current with a short press of the torch switch.You can disable the Hot Start function by adjusting the Hot Start current to 100 %. The currentwill then rise directly to the welding current level within the up-slope time.Press the torch switch down, and the welding continues. Release the torch switch, and thecurrent starts to drop and after the selected down-slope time the arc is broken. After this, theshield gas will flow for the time selected.remote controlIf you choose to adjust the welding current with a remote control unit you need to connectthe unit and select the remote control selection button. The PANEL light switches off, andyou can select the unit (R10, foot pedal control R11F, or torch control). The foot pedal controlworks only in 2T mode. Hold the remote control selection button (LO/HI) down to adjust thelimits of the remote control’s adjustment range.adjustment of parametersTo select TIG welding parameters you only need to use two buttons: arrow-left and arrow-right. Red panel light shows parameter you have chosen. Adjustment is done with the controlknob. When pressing the RETURN button, adjustment of parameters goes straight to weldingcurrent. The display shows automatically numeric values and the units of the parameters.When you adjust the parameters, you can see the value on the numerical display. After 10seconds, the display will return to the welding current.14MasterTig MLS 3000, 3003 ACDC / © Kemppi Oy / 1112