Lincoln Electric IM586-B Trigger Mode Selection, Display Control Keys, Trigger Mode Select Key

B-4 OPERATION B-4

Trigger Mode Selection

	Trigger Mode Select			key
COLD FEED	-	enables	operator	to
TRIGGER
2-STEP STD	choose mode of operation
4-STEP LOCK	shown by the indicator
SPOT	lights. Pressing key caus-
	es	mode	lights	to

sequence (top to bottom) starting from the current indicated selection.

Top Light - Indicates gun trigger has been selected to perform the Cold Feed Forward function in exactly the same manner as Cold Feed Forward key (See Operation Keys - Cold Feed Keys) with the same memory stored adjustable speed setting, and “Cld” shown on the top display.

Second Light - indicates 2-step (standard) trigger mode.

1.Trigger closure energizes the solenoid valve, then the wire feeder and the power source after Preflow time.

2.Releasing the trigger turns off the wire feeder, then power source after burnback time and then the gas solenoid valve after Postflow time.

Third Light - indicates 4-step (lock) trigger mode. This mode may be selected to include or exclude weld current interlock. (See “4-Step Trigger Mode Operation Selection” in this section for 4 step Trigger Mode operation)

Bottom Light - indicates Spot Weld Mode, which will only light if a spot time is set (See “Display Control Keys” in this section). If set to 0.0 seconds, spot mode light selection will be skipped. Trigger closure energizes the gas solenoid valve, then wire feeder and the power source. The spot timer starts when current flows. The wire feeder and power source then solenoid valve are all turned off when the spot on timer times out even though the trigger is opened or is still closed. Preflow/Postflow and burnback timers are also functional in spot mode. (See “Display Control Keys” in this section).

Display Control Keys

CONTROL	Control Select key - enables operator to
	choose Run-in WFS, burnback, spot or
	gas timers, as indicated by the appro-
	priate light. Pressing the key causes
	lights to sequence (top to bottom, then
	all off) starting from the current indicat-
	ed selection.

When burnback spot, or gas timers are selected the current display shows the time setting in seconds, as indicated by “SEC” displayed on the speed display. The times are set using the top encoder knob.

When Run-in WFS is selected the WFS display shows the Run-in WFS setting in in/min. or m/min.

Top Light - indicates Run-in WFS is being displayed.
Speed encoder knob can adjust, Run in speed
	RUN-IN	between minimum. Rated speed
	WFS	and up to the Weld speed setting.
1	PREFLOW	Run-in speed can not be set above
		weld speed setting. A Run-in
	SPOT	speed setting of 100 IPM or less is
	BURNBACK	recommended for optimum start-
		ing. Factory setting is near
	2 POSTFLOW	minimum rated speed.

If set below minimum rated speed “- -” will show on WFS display, indicated Run-In speed is set to match Weld speed setting.

When trigger is closed (and preflow time is over) the wire feeds at Run-In speed until the welding arc strikes, which causes the feed speed and volts to change to Weld settings.

If the arc does not strike within about 2 seconds, the Run-In speed automatically changes to Weld speed to permit “Hot” feeding at higher speed setting for load- ing wire.

Second Light - indicates preflow time is being dis- played, settable 0.0 to 2.5 seconds. (0.2 sec as shipped). This is the time the shielding gas flows before the wire feed and power source are activated.

Third Light - indicates spot time is being displayed, settable 0.0 to 199.9 seconds (0.0 sec as shipped).

Fourth Light - indicates burnback time is being dis- played, settable 0.00 to 0.25 seconds (0.0 sec as shipped). This is the time the arc power is delayed at the stop of the weld, and should be set to the lowest time required to prevent the wire sticking in the weld.

Bottom Light - indicates postflow time is being dis- played, settable 0.0 to 10.0 seconds (0.5 sec as shipped). This is the time the shielding gas flows after the wire feed and power source are deactivated.

Pressing Control Select Key again, or closing the gun trigger, shuts all control lights off, indicating current and Wire Feed Speed are again being displayed, and set by the appropriate encoder knob.

STT-10