Lincoln Electric power wave c300 Operator's Manual page 45

B-24
Id le Preflo w Stri ke
On
Shielding
Gas
Off
We ld
Po wer
So urce
Start
Output
Crater
Off
We ld
WFS
Cra te r
Ru n-in
Off
OPERATION
EXAMPLE 4 – 4 STEP TRIGGER: Trigger Interlock
The 4 step trigger can be configured as a trigger inter-
lock. Trigger interlock adds to the welderʼs comfort
when making long welds by allowing the trigger to be
released after an initial trigger pull. Welding stops
when the trigger is pulled a second time and then
released, or if the arc is interrupted. (See Figure B.14)
For this sequence,
PREFLOW:
Shielding gas begins to flow immediately when the
gun trigger is pulled.
RUN-IN:
After preflow time expires, the power source regulates
to the welding output and wire is advanced towards
the work piece at the Run-In WFS. If an arc is not
established within 1.5 seconds, the wire feed speed
will jump to the welding wire feed speed.
WELD:
The power source output and the wire feed speed
continue at the weld settings. Welding continues when
the trigger is pulled a second time.
POSTFLOW:
As soon as the trigger is released for the second time,
the power source output and the wire feed speed are
turned OFF. Shielding gas flows until the post flow
timer expires.
FIGURE B.14
4 St ep Trigge r
St art = OFF
C rater = OFF
B urnback = OF F
1. 5 s ec max.
POWER WAVE
Wel d
C300
®
B-24
Burnb ack Postflow Idl e