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GENERAL DESCRIPTION
The Synergic 7F is a semiautomatic constant speed
wire feeder designed specifically for use with the
Power Wave™ type power sources. This boom or
fixture mounting wire feeder consists of a Synergic 7F
Control Box and the choice of the standard Synergic
7F of High Speed Synergic 7FH wire feed unit and
connecting cable assemblies. A serial communication
link is supplied through the input control cable of the
Synergic 7F enabling information to be shared
between the power source and wire feeder control.
The 4-Roll Synergic 7F wire feed units comes factory
equipped with gas solenoid valve with gas fittings and
standard Lincoln gun connector and connector for an
optional dual procedure gun switch. Control includes a
3-1/2 digit LED display with rotating knob encoder
controls for setting the wire feed speed and voltage. A
tactile-feel keypad provides selection of operating
mode, function selection, timer selection and crater fill
selection and parameter adjustment. Two keys
provide Cold Feed and Gas Purge functions.
The unit has 3 operating modes: 2-step trigger, 4-
step trigger and spot. Three functions can be
selected: Volts or Trim Preset/arc (memory) voltmeter,
Run-in speed and weld speed (IPM or m/min.). In
addition, when 4-step trigger mode is selected, crater
fill WFS is also adjustable. 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.
The K678-1 Synergic 7F control may be used with
either of the two available 4-roll wire feed units.
The Synergic 7FH 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 Power Wave power
sources with 42V AC auxiliary power, and a 14-pin
connector receptacle.
STANDARD FEATURES
Wire Feed Features:
Wire Drive Unit - Incorporates low voltage permanent
magnet motor and highly efficient two-reduction spur
gearbox with insulated mounting bracket for mounting
and operation 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.
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
fluctuations 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 speed.
Adjustable Acceleration - Provides front panel
selection of 5 acceleration rates. This feature in
combination 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
termination. Solid-state design requires no
maintenance.
– 7 –
Ordering Speed Range Wire Size Range
Information Model Drive IPM (m/m) IN. (MM)
K679-1 Synergic 4-Roll 50 - 770 .025 - 3/32
7F (1.25 - 19.5) (0.6 - 2.4)
K679-2 Synergic 4-Roll 80 - 1200 .025 - .045
7FH (2.00 - 30.5) (0.6 - 1.2)
RECOMMENDED PROCESSES
AND EQUIPMENT
The Synergic 7F 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 feeder to control cable assemblies are available in two types:
K680-”L” Includes a control cable with a 14-pin MS style connector on each end, and a 4/0 weld
cable. Available in lengths “L” of 16ft (4.9m) or 25ft (7.6m).
K681-”L” Same as above but does not include weld cable available in lengths “L” of 12ft (3.6m),
16ft (4.9m) or 25ft (7.6m).