Lincoln Electric 7FH manual Operating Instructions, Power-Down Save, Operation Keys Mode Selection

OPERATING INSTRUCTIONS

Safety Precautions

WARNING

ELECTRIC SHOCK can kill.

•Do not touch electrically live parts such as output terminals or internal wiring.

•When inching with gun trigger, electrode and drive mechanism are “hot” to work and ground.

•Turn OFF welding power source before installing or changing drive roll and/or guide tubes.

•Welding power source must be connected to system ground per the National Electrical Code or any applicable local codes.

•Only qualified personnel should perform this installation.

Observe all additional Safety Guidelines detailed throughout this manual.

Duty Cycle

The Synergic 7F models are rated at 60% duty cycle

*for a maximum current of 600 amps.

*Based on a 10 minute time period (6 minutes on, and 4 minutes off).

KEYPAD SETUP AND OPERATION

Power-Down Save

Power to the Synergic 7F is supplied and controlled

from the power source . The Synergic 7F automatically senses the loss of power when the power source is turned off.

Procedure settings, including mode, crater speed, cold feed speed , run-in speed, weld speed, timers and acceleration are automatically saved when power is removed. Arc Voltage setting is retained by the synergic power source. This feature does not require batteries and when power is restored it will automatically return all settings to the state they were in when power was removed. The power source may automatically overwrite any or all of these settings following power-up recall.

Operation Keys

	Mode Selection
2-STEP	Mode Select key enables operator
	to choose mode of operation shown
STD
4-STEP	by the indicator lights. Pressing key
LOCK	causes mode lights to sequence
	(top to bottom) starting from the
SPOT	current indicated position.
	Top 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 (See Timer/ Crater Section).

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

Middle Light - Indicates 4-Step (Lock) Trigger Mode. These models have selectable 4-step with crater fill or, as shipped, 4-step with current interlock. (See 4-step trigger mode selection for method of switching).

The 4-step modes function as follows:

1. Trigger closure energizes the power

source and wirefeeder after the

preflow time.

2. Trigger release enables 4-step lock,

leaving the feeder and power source

as in step 1.

a) 4-step with current interlock will only

lock if weld current is flowing .

Breaking weld arc stops wire feed

and power source output.

b) 4-step with crater fill will lock without

welding.

3. Closing the trigger a second time

continues welding.

a) 4 - step with current interlock

continues welding without changing

the settings from step 2.

b) 4 - step with crater fill continues

welding but changes to the crater

settings.

4. Releasing the trigger turns off

wirefeeder and power source and

COLD FEED

GAS PURGE

Cold Feed key energizes the wire feeder but not the power source or solenoid valve. This cold feed speed is digitally displayed and is adjustable (with “Arrow keys”) only while pressing the Cold Feed Key. The last setting is held in memory for next Cold Inch feeding.

Gas Purge key energizes the solenoid valve but not the wire feeder or power source.

then gas solenoid after postflow

time.

Bottom Light - Indicates Spot Weld Mode. Trigger closure energizes the solenoid valve, then wire feeder and the power source. The spot on 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 through the trigger is still closed.

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