16
21.
Tig Pulse mode selector
This machine has two pulse modes.
Standard pulse works in both AC and DC modes
Advanced AC pulse works only in AC mode
Pulse is used to help control the amount of heat going into workpiece and commonly used
on stainless steels and alloys.
It standard mode AC, both the pulse peak and base amperage are AC
In standard mode DC, both the pulse and base amperage are DC
In advanced AC pulse mode, the machine pulses between AC and DC- and is ideal to
control the heat input on thin alloys.
22.
2T/4T, remote foot pedal and torch amp control selector
2/4 Step trigger mode switch
– Tig welding can either be done in 2 or 4 step mode.
When the trigger mode is in the 2 step position the following sequence will occur
Press and hold the Tig torch switch to start sequence.
The machine will open gas valve to start flow of shield gas, after the set pre-flow time to
purge air from torch hose the welding output of machine will be turned on and the arc will
be started. After the arc is started the output current will increase from the start (min)
current to base (main) current in time selected by slope-up.
Release the Tig torch switch to end sequence.
The machine will now decrease output to finish (min) current in time set by slope-down,
once at finish (min) current the machine will stop output and the gas valve will continue to
operate for the selected time (post flow)
Possible variations of this standard sequence are shown in diagram below. It is possible to
press and hold Tig torch switch a second time during down slope time to restart. After the
switch is pressed the output current will raise to base (main) current