Lincoln Electric IDEALARC SP-255, Operator'S Manual

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B-8
OPERATION
IDEALARC SP-255
The first time this key is pressed it turns on toggle
mode and recalls the setup in memory 4. This mode
allows you to toggle between the setups in memory 4
and memory 5. Each time the key is pressed, it alter-
nates between the two memories. The toggle screen
displays the memory number the current setup was
recalled from, indicates automatic (AUTO:) or manual
(MAN:) mode, displays gauge if in Auto mode, set
wire feed speed, and set arc voltage. The cursor
underlines the memory number currently selected.
If in AUTO mode, an up or down arrow which shows
whether the arc voltage has been adjusted above or
below the recommended level can also be on the dis-
play (see “Procedure Keys” in operation section). Also
Spot or Stitch timer status will be displayed in the
lower left-hand corner if either timer is active.
The gun thumbswitch functions as a Toggle key in
Toggle mode. Pushing the gun thumbswitch forward
(toward the tip) selects the setup in memory 5, and
pulling it back selects the setup in memory 4 (see
Gun Thumbswitch Section). The gun thumbswitch
also functions with the trigger closed for “on the fly”
changes during a weld.
To turn toggle mode off, press Auto, Manual, or any
Memory Number key.
Any changes made to settings in toggle mode are
not automatically saved when power is removed,
or if toggle mode is turned off. To save these
changes, press the Save key and then the memo-
ry number key that was currently displayed on the
toggle screen (4 or 5), “toggle” then press the
Save key and then the other Memory Number key
that was displayed after the toggle (5 or 4). When
power is returned, the machine will not be in tog-
gle mode, but will contain the settings present
when power was removed so you may continue to
weld right where you left off or press Toggle key
to return to toggle mode.
Left arrow keys — If metal thickness is displayed,
these keys will increase (up arrow) or decrease
(down arrow) it; otherwise, they perform no func-
tion.
Center arrow keys — Increases (up arrow) or
decreases (down arrow) wire feed speed setting. If
in Auto mode, increasing or decreasing wire feed
speed will simultaneously cause an increase or
decrease in the arc voltage and can change the
metal thickness setting.
Right arrow keys — Increases (up arrow) or
decreases (down arrow) arc voltage setting. If in
Auto mode, an up arrow indicator appears below
the V in VOLTS if the arc voltage has been set
higher than the recommended value, and a down
arrow indicator appears below the V in VOLTS if
the arc voltage is below the recommended value.
No arrow indicates that you are set to the recom-
mended value.
TYPICAL TOGGLE KEY PRESS SEQUENCE
Auto screen is displayed prior to pressing Toggle key.
Toggle key is pressed, memory 4 is recalled and
appears on the display. The unit is now in toggle
mode. Pressing the Toggle key again or pushing the
gun thumbswitch forward (toward the gun tip) “tog-
gles” the unit, and memory 5 is recalled and appears
on the display. Pressing the Toggle key again or
pulling the gun thumbswitch back (toward the gun
cable) “toggles” the unit, and memory 4 is recalled
and appears on the display. This whole cycle is
repeatable as long as the unit remains in Toggle
mode.
When the Toggle key is pressed and the setup in
memory 4 or 5 is an Auto mode type and it requires a
different wire type, wire diameter, or welding gas, a
message (see below) will be displayed for 2.5 sec-
onds telling you which memory does not match the
process set in the machine, and then the screen will
return to the previous display. In order to see what
process is required, press the Memory Number key of
CAUTION