Lincoln Electric LINC FEED 45 Manual De Instrucciones página 11

Example 5:
4 Step Trigger: Manual control of Start and Crater
times with Burnback ON
The 4 step trigger sequence gives the most flexibility
when the Start, Crater and Burnback functions are
active. This is a popular choice when welding aluminum
because extra heat may be needed during Start and less
heat desired during crater. With 4 step trigger, the
welder chooses the amount of time to weld at the Start,
Weld and Crater settings by using the gun trigger.
Burnback reduces the occurrence of wire to sticking into
the weld pool at the end of a weld and conditions the
end of the wire for the next arc start ( 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: The power source welds at the start WFS
and voltage until the trigger is released.

UPSLOPE: During upslope, the power source
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.

DOWNSLOPE: As soon as the trigger is released,
the wire feed speed and power source output ramp
to the crater settings throughout the crater time.
The time period of ramping from the weld settings to
the crater settings is called DOWNSLOPE.

CRATER: During CRATER, the power source
continues to supply output at the crater WFS and
voltage.

BURNBACK: When 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.
Idle Preflow Strike Start Upslope
On
Shielding
Gas
Off
Start T.
Weld
Power
Start
Source
1.5s max
Crater
Output
Off
Weld
Start
Crater
WFS
Run-in
Off
English
4 Step Trigger
Start = On
Crater =On
Burnback = On
Weld Downslope Crater Burnback Postflow Idle
Crater T. Burnback T.
SET-UP FEATURES MENU
The Setup Menu gives access to the set-up
configuration. Stored in the set-up configuration are
user parameters that generally need to be set only at
installation. The parameters are grouped as follows:

P.1 through P.99 Unsecured Parameters (always
adjustable).

P.101 through P.199 Diagnostic Parameters
(always read only).

P.501 through P.599 Secured Parameters
(accessible only though a p.c. or palm application).
To access the set-up menu, press the right and left
buttons of the MSP4 panel simultaneously. Note that
the set-up menu cannot be accessed if the system is
welding, or if there is a fault (The status LED is not solid
green). Change the value of the blinking parameter by
rotating the SET knob.
After changing a parameter it is necessary to press the
right hand button to save the new setting. Pressing the
left button will cancel the change. To exit the set-up
menu at any time, press the right and left buttons of the
MSP4 panel simultaneously. Alternately, 1 minute of
inactivity will also exit the setup menu.
Unsecured Parameters.
P.0 Press the left button to exit the set-up menu.
P.1 WFS units

Metric = m/min wire feed speed units

English = in/min wire feed speed units (default)
P.2 Arc Display Mode

Amps = The left display shows Amperage while
welding. (default)

WFS = The left display shows Wire Feed Speed
while welding.
P.4 Trigger Memory Recall

Enable = Selecting memories 2 through 6 with quick
trigger pulls is enabled when the optional dual
procedure/memory panel is installed. To recall a
memory with the gun trigger, quickly pull and
release the trigger the number of times that
correspond to the memory number. For example, to
recall memory 3, quickly pull and release the trigger
3 times. Trigger memory recall can only be
performed when the system is not welding.

Disable = Memory selection is performed only by
the buttons on the optional dual procedure/memory
panel (default).
P.5 Trigger Procedure Change

Quick Trigger = Allows switching between
Procedure A and procedure B while welding. The
optional dual procedure/memory panel is required.
To operate:
 Select procedure "GUN" on the memory panel.
Start the weld by pulling the gun trigger. The

system will weld with procedure A settings.
 While welding, quickly release and then pull the
gun trigger. The system will switch to
procedure B settings.
 Release the trigger to stop welding. When the
next weld is made, the system will start again
with procedure A.

Integral TrigProc = Use Integral Trigger + Procedure
8 English