Lincoln Electric V200-T manual Explanation of 2 Step and 4 Step Modes, Pulser Function

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B-6

OPERATION

B-6

 

 

 

EXPLANATION OF 2 STEP AND 4 STEP MODES

(See figure B.2 and the explanations that follow)

2 STEP

2 Step mode can be used with either an arc start switch or a hand or foot amptrol. The welding cycle begins when the torch switch is held closed and ends when the switch is released.

4 STEP

4 Step mode should only be used with an arc start switch. The welding cycle begins when the torch switch is pressed and then released. The cycle is ended by a further press and release of the switch.

The pre-gas flow is followed by an increase in the welding current from the level set by the Start/Crater Current Potentiometer, to the value on the display set with the Welding Current Potentiometer. The rate of increase is determined by the setting of the Slope Up Time Potentiometer.

The slope out phase begins with the release of the torch switch in the 2 STEP mode or with a second press of the switch in the 4 STEP mode.

During this phase, the welding current falls to the crater current set on the Start/Crater Current Potentiometer. The speed at which the welding cur- rent decreases is determined by the setting of the Slope Down Time Potentiometer.

The power source comes equipped with a restart capability. Any change required in the restart timing can only be made by an authorized service center. (See Figure B.2 - 4 Step Mode).

In the TIG-SPOT mode the UP/ DOWN-SLOPE con- trols and the PULSER function are disabled.

The welding cycle takes an "ON-OFF" type shape with the welding current jumping very rapidly from 0 to the nominal value.

PULSER FUNCTION

Pulsed welding is selected by using the TIG Process Switch. In this mode the output is modulated to pro- duce a series of current pulses. By this means pre- cise control of heat input and penetration can be achieved on critical applications. The pulse frequency, duration and amplitude may be adjusted by means of the respective potentiometers.

FIGURE B.2 2 Step and 4 Step Modes

2 STEP MODE

TORCH

SWITCH

TORCH SWITCH

WELDING

WELDING

CURRENT

CURRENT

WITHOUT RESTART

4 STEP MODE

TORCH

SWITCH

WITH RESTART

 

(As shipped

 

TORCH

no jumper)

 

 

SWITCH

 

 

 

 

 

 

 

 

WELDING

WELDING

CURRENT

CURRENT

CRATER CURRENT

INVERTEC V200-T

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Contents Safety Depends on You InvertecSafety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Table of Contents Installation Technical Specifications V200T TIGSelect Suitable Location Electric Shock can killInput Fuse and Supply Wire Output ConnectionsInput Connections Output Connection for Stick Welding Output and GAS Connection for TIG WeldingCylinder could explode if damaged Safety Instructions OperationGeneral Description Controls and Settings Figure B.1 Case Front ControlsOperation Operating Steps Welding in TIG ModeRemote Control Operation Sept97Recommended Electrode Amperage Ranges Invertec V200-T Welding in Stick ModeSet the Welding Process Switch to Stick Smaw ProcessExplanation of 2 Step and 4 Step Modes StepPulser Function Accessories Optional AccessoriesCable Plugs Input Filter Capacitor Discharge Procedure MaintenanceSafety Precautions Routine MaintenanceTroubleshooting HOW to USE Troubleshooting GuideTroubleshooting Diagrams Invertec V200-T PartsInvertec V-200-T 308-A.1308-C 11-4-98308-C.1 Items Not ShownInvertec V-200-T How To Read Shop Drawings $700.00Precaucion Warnung
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