4-Step Trigger With Restart Sequence; Bi-Level Trigger Sequence - Lincoln Electric ASPECT 375 Operator's Manual

ASPECT™ 375
A.4 4-Step Trigger with Restart Sequence
4-Step trigger with restart can be enabled in setup menu "GTAW" by switching 4RST to ON. If 4RST is ON, a TIG mode is selected,
and 4-step is selected on the output section of the machine, the following sequence will occur.
This sequence is the same as 4-step, except when the switch is released during the finishing current, welding current will ramp up
again to the operating amperage. This process can be repeated as many times as necessary. When welding is finished, quickly
press and release the trigger to start the final slope, which will be followed by the finishing current at which point output is switched
OFF, and the post flow will initiate.
A.5 Bi-Level Trigger Sequence
Bi-Level Trigger Sequence Bi-level trigger can be enabled in setup menu "GTAW" by switching BILV to ON. If BILV is ON, a TIG mode
is selected, and 4-step is selected on the output section of the machine, the bi-level sequence will be followed. Bi-level follows the
same sequence as 4-step but allows switching between operating amperage and a background current, A2. With Bi-level enabled,
press the SEL button until the left display shows A2. Turning the control knob will allow the A2 level to be set as a percent of the
operating current.
While welding at the set operating current, quickly press and release the trigger to switch to the A2 background current level.
Quickly pressing and releasing the trigger again will switch the output back to the set operating current. Each time this trigger action
is repeated the current level will switch between the two levels. When the main weld is complete, press and hold the trigger to start
the final slope and finishing current. Release the switch to switch the output OFF and begin the post flow time.
(1) (2) (3)
B-16
(4) (3A)
OPERATION