INSTRUCTIONS for
DIGIMIG 2 Roll Drive pictured above.
Input Power Required .............. 115 volts, 50/60 hz, 7 amp., 1 ph.
Wire Feed Speed Range ............ 20-999 in./min. (.5-25.2 m/min.)
Wire Sizes Accommodated:
Hard/Soft ............................. .023 thru 1/8-in. (.6 thru 3.2 mm)
Flux Cored ......................... .035 thru 1/8-in. (0.9 thru 3.2 mm)
Length ............................................................... 18.5-in. (470 mm)
Width ................................................................... 13-in. (330 mm)
Height ............................................................... 16.5-in. (419 mm)
Weight (less wire) ................................................. 46 lbs. (21 kg)
INTRODUCTION
The ultimate in semiautomatic mig welding and control
is DIGIMIG wire feeders. These microprocessor designed controls are the most technologically advanced
and functionally complete wire feeders offered in the
welding marketplace.
A. FEATURES/BENEFITS
microprocessor accuracy — the microprocessor, the control-
ling “brain” of the Digimig operates exclusively on drift free
digital logic, unlike competitive systems. The digital logic
delivers extraordinarily precise computer-accurate weld parameter control, and weld consistency.
microprocessor flexibility — in contrast with competitive digi-
tal systems that require additional printed circuit boards and
hard wiring whenever a feature or function is to be added, the
DIGIMIG incorporates electronically reprogrammable mod-
F-14-481-B
ules; by simply reprogramming this small plug-in module,
many existing functions may be extended or new features may
be added.
microprocessor reliability — Digimig Wire Feeders have proven
to be rugged and reliable in test after test for absolute
minimum downtime.
presettable wire feed speed (ipm) and voltage (volts) —
provides ability to easily and accurately preset the exact
welding parameters desired, before the welding sequence
begins.
F-14-481-B
April, 1995
DIGIMIG
WIRE FEEDERS
DIGIMIG 2-ROLL DRIVE, P/N 30784
DIGIMIG 4-ROLL DRIVE, P/N 30785 (See Suppl. 12-821)
These INSTRUCTIONS are for experienced operators. If you are not fully
familiar with the principles of operation and safe practices for arc welding
equipment, we urge you to read our booklet “Precautions and Safe Practices
for Arc Welding, Cutting, and Gouging”, Form 52-529. Do NOT permit
untrained persons to install, operate, or maintain this equipment. Do NOT
attempt to install or operate this equipment until you have read and fully
understand these instructions. If you do not fully understand these
instructions, contact your supplier for further information. Be sure to read
the Safety Precautions on page 2 before installing or operating this
equipment.
patented microprocessor controlled closed loop system -
provides most accurate means of maintaining wire feed speed
(amperage) and welding voltage; the microprocessor compensates for deviations in ambient temperature, primary voltage
fluctuation and changes in arc dynamics or wire feed force
conditions, to assure that preset parameters are maintained.
sure start interlock — to assure troublefree starts, the Digimig
has an interlock circuit which will not allow wire feed to initiate
when the torch trigger is pulled, unless the power supply
contractor is closed and voltage is present; the cold wire INCH,
however, will be operative at all times.
individual digital LED meters provide large 1/2-in. readout of
voltage and wire feed speed — continuous display of preset
and then actual welding voltage and wire feed speed for
accurate observation.
dual schedule capability — enables operator to have two
different sets of weld parameters at his fingertips; Digimig’s
microprocessor allows operator to change schedules with a
simple “click-click” squeeze of a standard torch trigger switch.
“lock-in” key - allows preset welding parameters to be “locked-
in” for positive supervisory control of weld quality; with key
turned to “set” position, all parameters may be reset to new
values at any time.
automatic “shut down” — assures welding is done at the
preset parameter; unit automatically shuts down if, for any
reason, either the volts or ipm cannot be maintained for a
preprogrammed time period; simultaneously, cause is indicated by flashing digital display.
arc hours readout — this unique feature provides direct
measure of “productivity’ by accumulating and displaying,
upon command, actual welding arc hours.
automatic adaptive anti-stick or manual burnback time feature
— a patented adaptive anti-stick circuit automatically adjusts
the same amount of wire burnback regardless of wire size,
speed or voltage; or, you can manually preset a “burnback
time” to specifically suit a specialized application; the manual
burnback function (programmed up to 30 cycles in the volts
window) allows you to override the automatic adaptive antistick by setting a specific burnback time.
adjustable “hot start” characteristic.
spot weld timer - because the spot weld timer is adjustable up
to 999 cycles (16.5 sec.) in the ipm window, it is more than a
conventional “spot” feature; it is also a weld timer extending
its use for “increment” or “stitch” welding.
Be sure this information reaches the operator.
You can get extra copies through you supplier.
gas pre and postflow and cold wire inch capability - gas pre and
postflow provides independent adjustment in tenths of a
second for highest weld quality and economy; cold wire inch
speed can be independently adjusted from welding wire feed
speed to reduce down time.
circuit protection - resettable circuit breaker for input power
minimizes downtime and maintenance.
EH-10A permanent magnet motor - provides the highest torque,
fastest response, and best efficiency of any mig p.m. motor on
the market.
patented closed loop “J” governor/optical tachometer - pro-
vides most accurate means of maintaining wire feed speed and
voltage, regardless of any voltage drop or drift.
dc straight or reverse polarity capability - because the Digimig
is factory-wire for use with either dcrp or dcsp without making
control wiring changes, the process flexibility of the Digimig is
further extended.
trigger lock-in - allows the operator to release the torch switch
lever during long welding cycles for easier torch manipulation
and less operator fatigue.
“Cold” servo adjustment allows setting controller for optimum
Hot start characteristic.
B. DESCRIPTION
The digimig is a microprocessor controlled digital wire
feeder designed for mig short arc and spray arc, and flux
cored welding applications. It electronic brain - the
microprocessor - not only controls, it also remembers
and automatically coordinates the program sequencing
(that “you” preset) which results in the most accurate
wire feed speed and voltage control possible.
The Digimig offers many features not available in conventional wire feeders. It allows the customer to preset
both welding parameters, lock-them-in and be assured
that each setting will be precisely held regardless of
changes in line voltage, arc or load conditions. If more
than one setup is required to complete the welding
operation, the Digimig also allows you to preprogram
two different sets of welding conditions — two wire
speed settings and two arc voltage settings. Alternate
switching between (RUN Pos.) schedule I and II is
controlled by operating a standard torch switch - press
(and hold) the torch lever once and you’re in Schedule
I; release and repress the torch lever within two-tenths
of a second, and you're in Schedule II. For additional
information regarding settings, adjustments and sequencing of the welding modes and controls, refer to
Section V, VI and VII of this booklet.
Two digital readout windows continuously display (1/2in. high) the preset welding parameters (speed and
voltage) as determined by the schedule mode switch.
After the arc is struck, they automatically display the
actual wire speed and arc voltage conditions for the
selected schedule. The readouts can also provide
selectable displays of other welding parameters such
as inching speed, spot time in cycles, manual burnback
time in cycles, gas pre-and postflow times.
The Digimig uses a heavy duty EH-10A wire drive motor
designed to feed hard or soft wire from .023-in. to 1/8in. diameter and flux-cored wires from .035-in. to 1/8-in.
in diameter. Rate of wire feed (20-999 ipm) is precisely
controlled by using a closed-loop “J” governor digital
feedback circuit that employs an optical tachometer to
monitor the motor speed. Arc Voltage regulation is also
controlled by a closed-loop digital feedback circuit that
monitors the arc voltage and automatically adjusts the
power source output voltage to maintain the preset
voltage.
All interconnecting cable, hose and auxiliary equipment
connection are quickly detachable to provide easy
setup and maximum portability of the wire feeder as
shown in Figs. 2 & 3. A water kit may be purchased, as
an optional accessory, for use with the water cooled
torch operation.
II. REQUIRED EQUIPMENT
A. CONSTANT VOLTAGE POWER SOURCE
The Digimig is specifically designed for use with constant voltage (C.V.) power sources utilizing “electronically controlled voltage regulation”. One of the appropriate Power Sources (following) and its slope requirement must be matched to Position 1 (IPM and VOLTS
window displays respectively) of the six-position Rotary
SPINDLE ASSY.
LEFT DIGITAL
READOUT IPM
6-POS. ROTARY
SELECTOR SW
LEFT INC./DEC. SW.
ACCY. SUPPORT
ASSY.
EH-10A MOTOR GEAR
UNIT w/TACHOMETER
RIGHT DIGITAL
READOUT VOLT
INCH-PURGE (RESET) SW.
RIGHT INC/DEC SW
TORCH SW. RECPT.
LOCATION FOR OPT
WATER CONNECTIONS
POWER ON-OFF SW
GAS SOLENOID
CONNECTION
POWER CABLE
ADAPTOR BLOCK
Fig. 1 - DIGIMIG Wire Feeder (front and rear view)
2
TRIGGER-LOCK SW
RESET CKT. BRK.
J1 CONTROL RECPT.
RUN-SET KEY SW.
selector switch on the control’s front panel (refer to
Section V-A-8 for further details on this switch).
One of the following power sources must be used:
SVI-300i cv/cc, P/N 34835.
VI-450, P/N 33322.
SVI-450i, P/N 31950.
V-650 cv/cc, P/N 33324.
B. CABLE ASSEMBLIES
A multi-conductor control cable assembly is required to
connect the Digimig to a power source with electronic
voltage control (see Fig. 3).
1. 115 Volt/Contactor/Remote Control J1 Cable, 19conductor with Amphenol plugs; order one of the
following:
a. 6-foot, 19-cond., P/N 30686.
b. 30-foot, 19-cond., P/N 30780.
c. 60-foot, 19-cond., P/N 30781.
C. WELDING TORCH
A mig welding torch, with contact tip, wire conduit and
outlet guide for wire size/type to be employed, will be
required. A suitable air (MT-400) or water-cooled (MT450W, ST-16) torch may be used with the Digimig.
When using a water-cooled torch it will be necessary to
connect the torch water hose to either a continuous
water supply or to the wire feeder base by using an
optional water kit (see Section III).
Table 1
Wire Type- Two Roll Drive Four Roll Drive Outlet
Size in./mm Feed Roll Feed Roll Kit* Guide
Soft
.030 (0.8) 2075304 (U) 999320 (U) 29N13**
.035 (0.9) 2075304 (U) 999321 (U) 29N13**
3/64 (1.2) 2075301 (U)† 999322 (U) 29N13**
1/16 (1.6) 2075298 (U)†† 999323 (U) 29N13**
3/32 (2.4) 2075297 (U) 999324 (U) 29N13**
Hard
.023 (0.6) 17998 (V) — 999745
.030 (0.8) 2075300 (V) 999325 (V) 993860(a)
.035 (0.9) 2075303 (V) 999326 (V) 993860(a)
.045 (1.2) 2075302 (V) 999327 (V) 39N15(b)
.052 (1.4) 2075330 (V) 999328 (V) 39N15(b)
1/16 (1.6) 2075299 (V) 999329 (V) 39N15(b)
Cored
.035 (0.9) 19761 (Serr.) — 993860(a)
.045 (1.2) 19761 (Serr.) 999330 (Serr.) 39N15(b)
.052 (1.4) 2075261 (Serr.) 999331 (Serr.) 39N15(b)
1/16 (1.6) 2075261 (Serr.) 999332 (Serr.) 39N15(b)
5/64 (2.0) 2075261 (Serr.) 999333 (Serr.) 62N17(c)
3/32 (2.4) 2075257 (Serr.) 999334 (Serr.) 62N17(c)
7/64 (2.8) 2075257 (Serr.) 999335 (Serr.) 39N16
1/8 (3.2) 2075255 (Serr.) 999336 (Serr.) 39N17
Require guide bushing P/N 17997
* Includes a center wire guide and 2 upper and 2 lower fed rolls.
** Requires outlet guide insert as follows: For .030 wire use 993902, For 3/64 wire use
05N57, For 1/16 wire use 12N75, For 3/32 wire use 05N58.
† Recommended U-Groove Pressure Roll 2075346 be used.
†† Recommended U-Groove Pressure Roll 2075348 be used.
(a) Include replaceable sleeve (995651).
(b) Includes replaceable sleeve (995692).
(c) Includes replaceable sleeve (995693).
D. GAS REGULATION
Shielding gas regulator/flowmeter and fitted hose to
bring gas from flowmeter to wire feeder. Such as:
R-5007 Argon/Helium/Nitrogen, P/N 998124.
R-5008 CO
, P/N 998125.
2
Gas Hoses:
Standard Duty, 40V77 (12-1/2-ft.) or P/N 34V38 (25ft) Heavy Duty, P/N 19416 (12-1/2-ft)* or P/N 19415
(25-ft.)*.
* Must be used for CO
2.
E. FEED ROLLS
The Digimig comes equipped with a pressure roll but
NOT a feed roll. Select the proper feed roll from Table
1 for the wire size and type to be used.
III. OPTIONAL ACCESSORIES
A. Water Kit (P/N 994466). Permits the convenient
connection of a water-cooled torch and continuous
water supply or water cooler to the wire feeder.
The kit consists of a coupling, two adaptors and a
fitting. A dependable cooling water supply, delivery
and return water hoses (P/N 40V76, 2 required) will
also be required. Note that Fig. 2 illustrates the use
of power cable adaptor P/N 634693, in addition to the
kit. If adaptor (634693) is not used, adaptor (45V11
supplied with kit) can be connected to the output
terminal of the power source. Install the kit in
accordance with Fig. 10 and Sec. IV-F. Connect the
water-cooled torch as shown in Fig. 2.
B. Lifting Bracket (P/N 634287). Mounts on the wire
feeder spool support between the support and the
spindle assembly. Enables you to mount the wire
feeder overhead on a boom.
C. Spool Enclosure Kit (P/N 600240). Provides pro-
tection of spool of wire against dust and dirt. For
installation instructions refer to Form 12-824.
D. Standard Wire Reel Assembly (P/N 995570). Reel
slips over spindle to allow use of coiled wire, see Fig.
9.
E. Heavy Duty Wire Reel Assembly (P/N 19V89).
Spoke-type wire reel includes a four spoke alumi-
num alloy casting mounted on a lightweight support
shaft of steel tubing. The reel will handle all wire coils
from 2 to 4-5/8-in. wide. The finger design permits
3
quick and easy accommodation of different coil
widths by simply rotating from one finger position to
the other.
F. Wire Straightener, (P/N 34V74). Reduces wire cast
to improve feedability and increase service life of
torch liners and contact tips. Mounts to the accessory support inlet guide.
Either of two additional accessories are required to
complete the installation of the wire inlet side of the
straightener:
a. Wire Inlet Guide, P/N 11N53, or b. Wire Wiper Holder, P/N 598763.
G. Wire Spool Spacer (P/N 548378). Enables the use
of a 8-in. diameter spool of welding wire with spindle
assembly on the Digimig wire feeder.
H. Four Roll Drive Accessory Support Assembly (P/
N 600216). This assembly (illustrated in booklet F-
12-821) utilizes four feed rolls to provide the back-up
force necessary for positive nonslip wire feed. It is
designed for feeding .030 through 1/8-in. diameter
wire(s). Feed rates using the four roll drive assembly
are virtually the same as with the two roll assembly.
For feed roll/outlet guide accessories refer to F-12821 or Table 1.
I. WC-9 COOLANT CIRCULATOR, P/N 33540, is used
for water cooled torch operation and is designed to
be “free standing” in a convenient location near the
torch. A four-gallon capacity tank provides 1.0 gal/
min @ 50 psi, using 115/230 volts, 50/60 Hertz, 1
phase input. Since the cooler is designed to run
continuously during a welding operation, never connect it to a power source or wire feeder that uses a
solenoid controlled water supply that opens and
closes with each operation of the welding contractor
- the cooling efficiency of the unit will be hampered
and the starting winding in the pump motor may burn
out.
J. WC-8C Coolant Circulator, P/N 33739, is used for
water cooled torch operation and is designed to fit in
a cylinder rack of a power supply truck or a trimpower cart. A 1.5 gallon capacity tank provides 1.0
gal/min @ 50 psi, using 115/230 volts, 50/60 Hertz,
1 phase input. Since the cooler is designed to run
continuously during a welding operation, never connect it to a power source or wire feeder that uses a
solenoid controlled water supply that opens or closes
with each operation of the welding contractor - the
cooling efficiency of the unit will be hampered and
the starting winding in the pump motor may burn out.
K. Wire Feeder Mobile Undercarriage Kit, P/N 680005.
This kit includes a mounting plate and caster type
wheels to provide a complete mobility of the wire
feeder (see F-14-322).
L. Wire Feeder Turntable, P/N 678940, allows rotation
of wire feeder as operator changes work positions.
This reduces strain and bending of torch cables (see
F-12-984).
IV. INSTALLATION
To avoid possible lethal shock, make sure that all
power to the Digimig is OFF before making any
welding/control cable and or accessory connections on this unit. Do this by “locking-open” the
input line disconnect switch to the power source.
After checking to be sure you have all required, components and accessories (see Section II), proceed as
follows (with reference to Figs. 2 & 3, Interconnection
Diagrams):
A. HOSE AND ELECTRICAL CONNECTIONS
Connect shielding gas and water (if used) supply hoses
as shown in Fig. 2. Connect the control cable assembly
(J1) from the Digimig’s rear panel to the power source
as shown in Fig. 3.
B. TORCH CONNECTIONS
Attach torch gas hose to gas connection. Plug in torch
switch cable and lock by twisting. After inserting
TORCH CONDUIT
TORCH SWITCH
TORCH GAS HOSE
WATER “DRAIN” HOSE - 40V76 (12-1/2 Ft.)*
WATER “IN” HOSE - 40V76 (12-1/2 Ft.)*
FRONT
VIEW
TORCH POWER
CABLE
WATER KIT
994466*
ADAPTOR 45V11*
Power Cable
Adaptor Assy 634693
REAR
VIEW
STRAIN
RELIEF
GAS HOSE 40V77 (12-1/2 Ft.)
34V38 (25 Ft.)
See Sect. II-D
J1
Fig. 2 - Torch and Service Interconnection Diagram
4
REGULATOR/
FLOWMETER
* Parts required when using a Water
Kit & Water Cooled Torch.
REAR VIEW DIGIMIG
J1 CABLE†
J1
TYPICAL POWER
SOURCE HOOKUP
† ESAB will not honor the warranty on Digimigs that are used with non-ESAB manufactured
interconnect cables and sustain damage that in ESAB’s opinion is caused by these cables.
For a listing of the proper J1 cables available, refer to Section II-B.
* 4/0 welding cables (customer supplied) are set-up for DCRP, (NEG. TO WORK) operation.
Fig. 3 - Welding and Control Interconnection Diagram
POWER CABLE
ADAPTOR
BLOCK
4 0 WELDING CABLE*
RECPT.
TO WORK*
conduit liner (if used) and attaching wire outlet guide of
correct size, connect wire feed conduit to welding head
clamp and lock in place. Connect torch power cable to
power source, or to power cable adaptor block (with a
second cable from that block to the power source).
C. INSTALLING FEED ROLL
1. Release the clapper on the accessory support assembly (Figure 8) by disengaging the retainer from
the clapper fork.
2. Remove thumbscrew, bell washer, and flat washer
from the feed roll shaft.
3. Slip the feed roll on the shaft, engaging the key. Be
sure to observe the “THIS SIDE OUT” marking on the
feed roll.
4. Replace flat washer, bell washer, and thumbscrew,
tightening screw sufficiently to eliminate all end play
from the feed roll.
D. INSTALLING SPOOL OF WIRE
CAUTION: Make sure safety glasses are worn when
clipping wire off at the spool or at the end of
the torch — serious eye injury can result
due to the springiness of the wire which
quickly unravels or a cut wire end which
may shoot across the room.
1. Remove “hairpin” clip from spindle.
2. Position the spool of wire so that when it is placed on
the spindle, wire will be drawn to the feed roll from the
bottom of the spool. The spool should be held so that
the index hole on the back will engage the lug on the
spindle.
3. Slide the spool onto the spindle until it engages the
lug. Lock in place with the hairpin clip.
4. Loosen the brake screw in the center of the spindle
hub, then tighten it just enough to prevent coasting of
the spool when wire is drawn from it. Too much
pressure will load the wire feed motor unnecessarily.
Too little pressure will permit the spool to over-run,
causing the wire to kink and tangle.
5. Thread the wire on to the accessory support assembly as described in Section E.
6. When wire coils are to be used instead of spools,
mount wire reel on spindle as though it were a spool
(see 1 and 3 above). Remove thumbnuts and cover
plate from reel. Remove coil from its package, but do
not remove its binding wires. Slide coil onto reel so
that wire will be drawn from bottom of coil (starting
end for a coil is always the outer end). Replace reel
cover plate and thumbnuts. Cut off coil tie wires and
any kinked wire. Then adjust brake screw and thread
wire to torch as covered in 4 and 5 above.
E. ADJUSTING THE ACCESSORY SUPPORT AS-
SEMBLY (See Fig. 8)
When a new wire size or type is to be used, set the
pressure roll adjustment as follows:
1. Round off the free end of the welding wire with a file.
2. Release the clapper and unscrew the pressure
adjusting knob until the pressure spring is free.
3. Thread the wire through the inlet and outlet guides of
the accessory support, and 3 or 4 inches into the
torch conduit.
4. Engage the clapper making sure the wire is held in
the feed roll groove.
5. Tighten the pressure adjusting knob until the wire is
firmly against the feed roll — do not overtighten. The
spring pressure applied should be the minimum
required to provide positive, nonslip wire feed. Too
little pressure will result in wire slippage while excessive pressure will scar and deform the wire. Further
adjustment can be made after the wire feed is put into
operation. Note that a light spring (182W55) is
installed on the accessory support for use with soft
and small diameter hard wire. For large diameter
hard wire, replace this spring with a heavy spring
(182W54) supplied with the unit.
F. WATER KIT (Optional see Fig. 10)
Mount bulkhead adaptor (58V75) behind opening provided in vertical base plate, above gas connection, and
secure with screws (No. 8 — 32 X 3/8 in.) and lockwashers provided. Attach coupling and adaptor (11N16)
behind bulkhead adaptor. Mount torch cable adaptor
(45V11) on welding power stud. Connect water drain
hose to this adaptor, and water inlet hose to adaptor
11N16.
V. ADJUSTMENTS
Do not allow metal-to-metal contact between the wire
feeder chassis and a metal surface connected in any
5
way to a welding ground. With such contact, a poor
welding ground connection may create a difference
in potential that sends part of the welding current
through the safety ground wiring in the control cable
and wire feeder, resulting in burnout of that wiring
and/or damage to wire feeder circuitry. If the safety
ground burns out, the operator may be exposed to
115V. shock hazard.
A. CONTROL FUNCTIONS
For location of rear panel control features, refer to
Fig. 4.
1. Power Switch - this two-position toggle switch turns
power “on” or “off” to the wire feeder control.
2. Lock-In Key - This “key-operated” switch must be in
the SET position to preset, vary and weld-test the
welding parameters programmed into the control
(e.g.: Sched. I (RUN), Sched. II, Spot). After the
desired results are achieved, the program(s) can be
“locked-in” by turning the key to the RUN position. No
parameters can be altered by the operator in the RUN
position.
3. Trigger Lock-In Switch. This allows the operator to
release the torch switch (trigger-lock “on”) after starting the welding cycle in Schedule of your choice (I or
II). To stop the welding cycle, you simply depress the
torch switch again and all welding action ceases.
When this function is ON it automatically overrides
the ALTERNATE (or second) schedule and/or a
Spotweld operation if programmed. An indicator
light (LED) on the front panel will indicate that the
Trigger Lock-In feature has been engaged. In the
OFF position, this feature is not functional, and the
LED is off.
Fig. 4 - Rear Panel Controls
4. Reset Circuit Breaker. A seven (7) ampere circuit
breaker provides protection to the 115-volt control
circuit and the wire feed motor. If an overload occurs,
the breaker will trip and suspend all operation. To
restore service, depress the breaker button to reset
the circuit.
For location of the following front control features,
refer to Fig. 4A.
5. Digital Readout Windows. Two individual three-
digit windows are provided to display preset or actual
welding parameters as follows:
a. IPM Digital Readout - This window is primarily
used to display wire feed speed in IPM from 20 to
999 inches per minute in one inch increments.
However, with the appropriate Rotary switch function actuated, this window can also display the
following:
— Power Source selected and designated by the
numerals “300” or “450” (see Rotary Switch,
Item 8).
— A code number indicates a type of MATERIAL
programmed for various welding wire applications; #1, #2, or #3 (see Rotary Switch, Item 8).
— shielding gas PREFLOW from .1 to 99.9 sec-
onds in one tenth of a second increments
— SPOT welding time from 1 to 999 cycles in one
cycle increments.
— cold wire INCH speed in IPM from 20 to 999
inches per minute in one-inch increments
NOTE: With the power turned “on” but not welding, the
IPM window will “continuously” read Preset wire
speed if the Rotary switch is in the RUN or SCH.
II mode. When the arc is struck, the IPM window
will then continuously read Actual welding wire
speed.
b. Volts Digital Readout. This window is primarily
used to display arc voltage in VOLTS from 12 to 50
vdc in one tenth volt increments. However, with
the appropriate Rotary switch function actuated,
this window can also display the following:
— indicates power source SLOPE selected and
designated by the numeral 1, 3, or 6 (see Rotary
Switch, Item 8).
— a pair of numbers represent WIRE DIAMETER
sizes which are programmed for slelection as
follows: #23, #30, #35, #45, or #63 (see Rotary
Switch, Item 8).
— shielding gas POSTFLOW from .1 to 99.9 sec-
onds in one tenth of a second increments
— Manual BURNBACK time. Manually adjust-
able burnback time period which when preset
will override the automatic adaptive anti-stick
feature. This time period will be set in one-cycle
(60-cycle = 1 sec.) increments. When set to
“zero”, the Automatic Adaptive Anti-stick feature will be operational.
NOTE: With the power turned “on”, but not welding, the
VOLTS window will “continuously” read Preset
6
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