Lincoln Electric IM557 manual General Description, Recommended Processes and Equipment

A-2 INSTALLATION A-2

GENERAL DESCRIPTION

The Synergic 7 is a semiautomatic constant speed wire feeder designed specifically for use with the Invertec Power Wave type power sources. A serial communication link is supplied through the control cable of the Synergic 7 enabling information to be shared between the power source and wire feeder. The Synergic 7 comes factory equipped with a gas solenoid valve with gas fittings and standard Lincoln gun connector. These models includes a 3-1/2 digit LED display with rotating knob encoder controls for setting the wire feed speed and voltage and a dual pro- cedure selector switch. A tactile-feel keypad provides selection of operating mode, function selection, timer and crater fill selection and parameter adjustment. Two keys provide Cold Feed and Gas Purge functions, and connector receptacles are provided for an optional dual procedure remote control and dual procedure switch.

The unit has 3 operating modes: 2-step trigger, 4-step trig-

ger and spot. Three functions can be selected: Volts or Trim Preset/arc (memory) voltmeter, Run-in speed and weld speed (IPM or m/min.) or (memory) ammeter. In addition, when 4-step trigger mode is selected, crater fill WFS is also adjustable. Up to three timers are available depending on the mode: preflow, postflow and spot, and 5 acceleration rates are selectable, as well as 6 Burnback settings.

The Synergic 7 is available in 2 models:

Ordering			Speed Range	Wire Size Range
Information	Model	Drive	IPM (m/m)	IN. (MM)
K631-3	Synergic	4-Roll	50 - 770	.025 - 3/32
	7		(1.25 - 19.5)	(0.6 - 2.4)
K631-4	Synergic	4-Roll	80 - 1200	.025 - .045
	7H		(2.00 - 30.5)	(0.6 - 1.2)

RECOMMENDED PROCESSES AND EQUIPMENT

The Synergic 7 wire feed unit has the following wire feeding capabilities:

a)Feeds .025 - 1/16” (0.6-1.6mm) solid wire for gas-metal-arc processes.

b)Feeds .045 - 3/32” (1.2-2.4mm) cored wire for Outershield GMA or Innershield processes up to 5/64” (2.0 mm).

The Synergic 7H wire feed unit has the following wire feeding capabilities:

a)Feeds .025 - .045” (0.6-1.2mm) solid wire for gas-metal-arc processes.

b)Feeds .045 - (1.2mm) cored wire for Outershield GMA or Innershield processes.

Recommended power sources are The Lincoln Electric Company Synergic type Invertec® Power Wave power sources with 42VAC auxiliary power, and a 14-pin connector receptacle.

STANDARD FEATURES

Wire Drive Features:

Wire Drive Unit - Incorporates low voltage permanent magnet motor and highly efficient two-reduction spur gearbox which operates in any position. The non-fluid lubricant won’t leak.

“Quick Release” Wire Feed System - Provides a completely tool-less means for releasing and opening the idle roll pressure arm, precisely adjusting the idle roll pressure and changing the incoming and outgoing guide tubes and drive rolls.

Drive Rolls and Guide Tubes - Provide long life, positive feeding and precise alignment of electrode. Minimizes “birdnest” or mill-thru of wire if properly set. (Ordered separately.)

Tachometer Feedback - Provides proper wire feed acceleration and speed accuracy, independent of fluc- tuations in line voltage and wire loading, for reliable arc starting and weld consistency.

Run-in Speed Setting - Allows the arc striking speed “Run-in” to be adjusted independently of the weld feed speed for starting optimization.

Cold Feed Speed - Provides cold feed speed adjustment independent of weld, run-in and crater speeds.

Selectable Acceleration - Provides front panel selec- tion of 5 acceleration rates. This feature in combina- tion with Run-in Speed provides the ability to easily optimize starting on any process or procedure.

Solid-State Dynamic Braking - Quickly stops wire feed motor to minimize wire overrun during weld termina- tion. Solid-state design requires no maintenance.

SYNERGIC 7 & 7H