Tweco 400 TS Arcmaster User Manual

Page 30

Parameter Description

(Background

Current)

SPOT TIME

This parameter sets the duration of the

SPOT TIME

HF TIG

mode only.

PULSE WIDTH

This parameter sets the percentage on time of the

PULSE FREQUENCY

for PEAK

weld current when the

PULSE

is ON.

PULSE FREQ.

This parameter sets the

PULSE FREQUENCY

when the

PULSE

is ON.

DOWN SLOPE

This parameter operates in TIG modes only and is used to set the time for the weld
current to ramp down, after the torch trigger switch has been pressed, to

CRATER

CUR.

This control is used to eliminate the crater that can form at the completion of

a weld.

CRATER CUR.

This parameter operates in

SLOPE

REPEAT

(4T) TIG modes only and is used to

set the finish current for TIG. The CRATER Current remains ON until the torch
trigger switch is released after it has been depressed.

POST-FLOW

This parameter operates in TIG modes only and is used to adjust the post gas flow
time once the arc has extinguished. This control is used to dramatically reduce
oxidation of the tungsten electrode.

The SAVE/LOAD buttons are used to save and retrieve a total number of 5 programs
into the 400 TS memory.

Table 4 – Weld Parameter Descriptions for ArcMaster 400 TS