Auto Adaptive ARC Force

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B-4	THEORY OF OPERATION		B-4
5. Positive Quick Disconnect: Positive output con-		AUTO ADAPTIVE ARC FORCE
nector for the welding circuit.		(WITH STICK WELDING)
6. Negative Quick Disconnect: Negative output con-		The Auto Adaptive Arc Force function is activated dur-
nector for the welding circuit.		ing stick welding. This function temporarily increases
REAR CONTROL PANEL		the output current, to clear intermittent shorts between
		the electrode and the weld puddle that may occur dur-
(See Figure B.2)		ing stick welding.
7. Power Switch: It turns ON / OFF the input power		This is an active control feature that guarantees the
to the machine.		best arrangement between the arc stability and spatter
8. Input cable: This machine is provided with a		presence. The feature "Auto Adaptive Arc Force" has
		instead of a fixed or manual regulation, an automatic
plugged input cord. Connect it to the mains.		and multilevel setting: its intensity depends by the out-
9. Fan: This machine has a F.A.N. (Fan As Needed)		put voltage and is controlled by the microprocessor on
		the Control Board.
circuitry inside: the fan is automatically turned ON		The circuit determines the amount of current neces-
or OFF. This feature reduces the amount of dirt
which can be drawn inside the machine and reduces		sary to release the metal droplet that is being trans-
power consumption. The F.A.N. operates differently		ferred from the electrode to the workpiece to guarantee
in different weld mode.		the arc stability without going too high, to minimize the
• Stick mode:	When the machine is turned ON the	spatter levels. That means:
fan will turn ON for a short time and then go off if a		• Electrode to workpiece sticking prevention, even at
weld is not started. The fan will continue to run when-		low current values.
ever the machine is welding. The fan will turn OFF		• Spatter reduction.
five minutes after the welding is stopped.
• TIG modes:	When the machine is turned ON the	The welding operations are simplified and the welded
fan is OFF. The fan will turn ON only when a weld		joints look better, even if not brushed after the welding.
is started and it will continue to run whenever the		This feature is available in both the Soft Stick and Crisp
machine is welding. The fan will turn OFF five min-
utes after the welding is stopped.		Stick operating modes. The Crisp Stick feature also
		increases the Hot Start action, facilitating the arc strik-
		ing.
	FIGURE B.2	The following features are also enabled in the stick
		welding modes:
		• Hot Start: This is a temporary increase in the initial
		welding current. This helps ignite the arc
8	7	quickly and reliably.
		• Anti-Sticking: This is a function that decreases the
		output current of the machine to a low
9		level when the operator makes an
		error and sticks the electrode to the
		work piece. This decrease in current
		allows the operator to remove the
		electrode from the electrode holder
		without creating large sparks that can
		damage the electrode holder.

INVERTEC® V155-S

THEORY OF OPERATION

(WITH STICK WELDING)

6. Negative Quick Disconnect: Negative output con-

REAR CONTROL PANEL

• Stick mode:

• TIG modes:

FIGURE B.2