Lincoln Electric 7FH manual

Timer/Crater Select - key enables operator to choose crater speed, spot

PREFLOW	POSTFLOW
1	2		or gas timers as indicated by the
			appropriate light. Pressing key causes
		CRATER lights to sequence (left to right, top to
			bottom) starting from the current
			SPOT indicated position. Any parameter not
			available in the mode selected is
			skipped over. If a function is being
			displayed when the Timer/Crater Select
			key is pressed, then the light of the last
			parameter selected before the function
			was chosen will come on and become
			the starting point for the sequencing.
			Top Left Light - indicates preflow time
			is being displayed in seconds. This is

GAS PURGE

V VOLTS / TRIM

RUN-IN

WFS

Acceleration Selection

Pressing both the Gas Purge key and then function select key at the same time causes the acceleration setting to be displayed. The display will indicate “A-X” where X will be a number from 1 through 5 with 5 being the fastest acceleration. This number can be adjusted using the arrow keys. To exit this function, press both these keys again or press any other key except the arrow keys.

the time the shielding gas flows before

the wire feed and power source are

activated.

Top Right Light - indicates postflow

time is being displayed in seconds.

This is the time the shielding gas flows

after the wire feed and power source

are deactivated.

Middle Light - indicates that crater feed

speed is being displayed. Crater speed

is only available when 4-step trigger

with crater fill is selected. It is activated

by Step 3 and deactivated by Step 4 of

the 4 - step sequence . (See 4 - step

trigger mode selection section).

Bottom Light - indicates spot on time is

being displayed in seconds.

NOTE: if unit is not in spot mode then

this light will be skipped over in the

GAS PURGE

PREFLOW POSTFLOW

12

CRATER

SPOT

Selection of English or Metric Speed Display Units

Pressing both the Gas Purge key and then timer select key at the same time causes the speed display units to toggle between IPM (no decimal point displayed) and m/m (a decimal point displayed). If the speed display units were IPM, then they will change to m/m. If the speed display units were m/m, then they will change to IPM. If the display is showing the volts/trim or one of the timers when the keys are pressed, the display will be changed to weld speed to indicate the selected speed display units.

selection sequence.

Increase Arrow - key increases the

setting of the parameter selected to be

displayed, except Wire Feed Speed and

Volts/Trim which are controlled by the

encoder knobs.

Decrease Arrow - key decreases the

setting of the parameter selected to be

displayed, except Wire Feed Speed and

Volts/Trim which are controlled by the

encoder knobs.

Arrow key adjustments use the

“Accelerating Digit” method for setting

changes, where holding the arrow key

causes setting change rate to

accelerate from slow to fast. Releasing

arrow key resets to slow setting

change.

GAS PURGE

COLD FEED

Run-In Selection

Pressing both the Gas Purge and Cold Feed keys at the same time causes Run-In function to toggle on or off, as indicated by the Run-In indicator light turning on or remaining off in the function select sequence.

As shipped, the Run-In function is off with a fixed setting of min. rated speed. Therefore, the Run-In indicator light will not sequence with the function select key, but the fixed setting will still be used for actual Run-In speed.

Activation of adjustable Run-In speed using the above dual key press, will permit Run-In speed to be adjusted with the arrow keys and the Run-In indicator light will return to function key sequence. Re-pressing the above dual key again removes the Run-In light from the function key sequence, but replaces the fixed Run - In speed with the adjusted Run-in speed setting, until readjusted.

95 MAR – 21 –