Lincoln Electric LINC FEED 45 Bedienungsanleitung Seite 9

Memory
Effect Range
Job1..Job8 Allows memorizing the selected weld
mode.
Right Button:
Start Options
Effect/Range
Preflow Time Adjusts the time that shielding gas
0-25.0 seconds flows after the trigger is pulled and prior
to feeding.
Run-in WFS Run-in sets the wire feed speed from
Off, 1 to 12 m/min the time the trigger is pulled until an arc
is established.
Start Procedure The Start Procedure controls the WFS,
Volts at a specified time at the
beginning of the weld. During the start
time, the machine will ramp up or down
from the Start Procedure to the preset
Welding Procedure.
End options
Effect/Range
Spot Timer Adjust the time welding will continue even
0 to 120.0 seconds if the trigger is still pulled. This option has
no effect in 4-Step Trigger Mode.
Postflow Time Adjusts the time that shielding gas flows
0 to 25.0 seconds after the welding output turns off.
Burnback The burnback time is the amount of time
that the weld output continues after the
wire stops feeding. It prevents the wire
from sticking in the puddle and prepares
the end of the wire for the next arc start.
Crater Procedure Crater Procedure controls the WFS and
volts for a specified time at the end of the
weld after the trigger is released. During
the Crater time, the machine will ramp up
or down from the Weld Procedure to the
Crater Procedure.
2/4 Step Mode
Effect Range
2-Step, 4-Step Selects between 2-Step and 4-Step mode
of weld.
2- STEP 4- STEP- Trigger Operation
The 2-Step - 4-Step switch changes the function of the
gun trigger. 2-Step trigger operation switches the
welding output ON-OFF in direct response to the trigger.
4-Step trigger operation provides 'trigger interlock'
capability and gives the ability to control the amount of
time spent in the arc start and arc crater steps. Press
the push button on the case front to toggle between 2-
Step and 4-Step operation. The 2-Step, 4-Step trigger
has no effect when welding with SMAW or CAG
procedures.
2-Step Trigger
2-Step trigger operation is the most common. When the
gun trigger is pulled, the welding system (power source
and wire feeder) cycles through the arc starting
sequence and into the main welding parameters. The
welding system will continue to weld as long as the gun
trigger is activated. Once the trigger is released, the
welding system cycles through the arc ending steps.
4-Step Trigger
4-Step trigger operation gives the welder additional
control in the welding sequence. 4-Step trigger allows
the welder to choose the arc start, weld and arc end
time. It may also be set-up to work as a trigger interlock.
English
Description
Description
Description
Description
Example 1:
2 Step Trigger: Simple operation
The simplest trigger operation occurs with a 2 Step
trigger and the Start, Crater and Burnback functions all
set to OFF (See Figure Below). 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 for as long as
the trigger is pulled.

POSTFLOW: As soon as the trigger is released,
the power source output and the wire feed speed
are turned OFF. Shielding gas continues until the
post flow timer expires.
Idle Preflow Run-in
On
Shielding
Gas
Off
Weld
Power
Source
Output
Off
Weld
WFS
Run-in
Off
Example 2:
2 Step Trigger: Improved Arc Start and Arc End.
Tailoring the arc start and arc end is a common method
for reducing spatter and improving weld quality. This
can be accomplished with the Start and Burnback
functions set to a desired values and Crater set to OFF
(See Figure Below). 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 start 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 power source output and wire feed
speed skips to the weld settings.

START & UPSLOPE: Once the wire touches the
work and an arc is established, both the machine
output and the wire feed speed ramp to the weld
settings throughout the start time. The time period
of ramping from the start settings to the weld
settings is called UPSLOPE.

WELD: After upslope, the power source output and
the wire feed speed continue at the weld settings.

BURNBACK: As soon as the trigger is released,
the wire feed speed is turned OFF and the machine
output continues for the burnback time.

POSTFLOW: Next, the machine output is turned
OFF and shielding gas continues until the post flow
timer expires.
6
2 Step Trigger
Start = Off
Crater = Off
Burnback = Off
Weld Postflow
1.5s max
Idle
English