Miller Electric Shopmate User Manual

Shopmate 300 Processes

MIG (GMAW)
Flux Cored (FCAW)

Shopmate 300 DX Processes

MIG (GMAW)
Flux Cored (FCAW)
Stick (SMAW)
DC Lift-Arc

™

TIG (GTAW)

Light Industrial Applications

Recreational Vehicle
Trailer Manufacturing
MRO — Maintenance/Repair
Education
Farm/Home

Quick
Specs

Shopmate™Series

MIG/Multiprocess Welding

Power Sources

Issued August 2007 • Index No. DC/12.7

Built-in 10-pin
connector for

direct hookup of
Spoolmatic

®

15A

or 30A spool guns.

Large, dual digital
meters enable the

operator to preset
weld voltage in CV
mode and amperage
in the CC mode (DX
model only) before
striking an arc.

Arc control adjusts
inductance to optimize
MIG arc performance.

Line voltage
compen sation keeps

output power constant
even if input power
varies ±10%.

Built-in 14-pin
connector provides

quick, direct con ­nection for 14-pin
24 VAC Miller wire
feeders and
accessories.

Fan-On-Demand

™

operates only when
needed reducing
noise, power con ­sumption, and the
amount of airborne
contaminants
pulled through the
machine.

The Power of Blue®.

Power source is warranted for 3 years, parts and labor.

Original main power rectified parts are warranted for 5 years.

Miller Electric Mfg. Co.

An Illinois Tool Works Company
1635 West Spencer Street
Appleton, WI 54914 USA

Web Site

www.MillerWelds.com

International Headquarters

Phone: [phone]
USA FAX: [phone]
Canadian FAX: [phone]
International FAX: [phone]

Input Power 1-Phase Power

(primary power cord not included)

Rated Output 250 A at 30 VDC, 60% Duty Cycle

300 A at 32 VDC, 40% Duty Cycle

Amperage Range in CC Mode 5 –400 A
Max. Open-Circuit Voltage 80 VDC
Voltage Range in CV Mode 10–35 VDC
Weight 300: 177 lb (80.3 kg) 300 DX: 177 lb (80.3 kg)

Shopmate 300

Single-phase MIG power source that
provides versatility and outstanding
arc performance in CV mode (MIG).

Shopmate 300

Shopmate 300 DX

Shopmate 300 DX

Single-phase MIG or
DC multi process
capability for versatility
with outstanding arc
performance in CV
mode (MIG) and CC
mode (Stick and TIG).

Shopmate 300 DX includes:
Process Selector Switch “operator-friendly”

single process switch eliminates confusion
caused by several switch combinations.

Lift-Arc TIG

™

allows DC/TIG starting without
the use of high-frequency. Starts the arc
without contaminating the weld with tungsten.

Shopmate 300 DX

MIG Packages

(see page 4)

VOLTA GE

VOLTAGE

PANE L

VOLTAGE CONTROL

AMPERAGE

ARC CONTROLPOWER

OFF

REMOTE 10

REMOTE 14

REMOTE 14

CBI

REMOTE

ON

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2

3

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7

8

9

WELDING AMPS

% DUTY CYCLE

DUTY CYCLE CHART

500
450
400
350
300

250

200

150

50

10 20

30

908070605040

100

100

Performance Data

2

Control Panel

Arc Control

Shopmate™300 Specifications (Subject to change without notice.)

Rated Output

250 A at 30 VDC,
60% Duty Cycle

Amperage
Range

5–400 A

Voltage
Range

10–35 V

Max. Open­Circuit Voltage

80 VDC

Dimensions

H: 24-1/2 in (622 mm)

including lift eye
W: 19 in (483 mm)
D: 25-1/2 in (648 mm)

Net
Weight

177 lb
(80.3 kg)

Example: Preset for MIG welding with steel wire

Control adjusts inductance for MIG welding. Set Arc
Control to desired wire type. Inductance determines the
“wetness” of the weld puddle. As setting is increased
(rotating Arc Control clockwise), wetness (puddle fluidity)
increases. For best results, preset Arc Control to the wire
type. Then either increase or decrease setting within wire
type scale to make fine adjustment to the welding arc.

1. Ammeter

2. Voltmeter

3. Power Switch

4. Arc Control

5. Voltage Adjustment Control

6. Remote 10 Receptacle

7. Supplementary Protector CBI

8. Remote 14 Receptacle

9. Voltage Control Switch

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Amps Input at Rated Output, 60 Hz
208 V 230 V 460 V 575 V KVA KW

66 57 29 23 13 11.2

Certified to both the Canadian and U.S. Standards for welding equipment.

Note: For input conductor and fuse size information consult the Owner’s Manual.

Arc Control

(Counter Clockwise)

Low Inductance

Weld Bead

Arc Control
(Clockwise)

High Inductance

Weld Bead

Arc Control – Inductance/MIG

Arc Control – DIG/Stick

3

Shopmate™300 DX Specifications (Subject to change without notice.)

Rated Output

250 A at 30 VDC,
60% Duty Cycle

Amperage
Range

5–400 A

Voltage
Range

10–35 V

Max. Open­Circuit Voltage

80 VDC

Amps Input at Rated Output, 60 Hz
208 V 230 V 460 V 575 V KVA KW

66 57 29 23 13 11.2

Dimensions

H: 24-1/2 in (622 mm)

including lift eye
W: 19 in (483 mm)
D: 25-1/2 in (648 mm)

Net
Weight

177 lb
(80.3 kg)

S

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L

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0

1

0

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TIG

MIG

STICK

LIFT-ARC

TIG™

VOLTA GE

VOLTAGE

AMPERAGE

PANE L

OUTPUT CONTROL

AMPERAGE

ARC CONTROLPOWER

OFF

REMOTE 10

REMOTE 14

REMOTE 14

CBI

REMOTE

ON

1
2

3

4

5

6

7

8

9

10

ELECTRODE HOT

WELDING AMPS

% DUTY CYCLE

DUTY CYCLE CHART

500
450
400
350
300

250

200

150

50

10 20

30

908070605040

100

100

Performance Data

Control Panel

1. Ammeter

2. Voltmeter

3. Power Switch

4. Arc Control

5. Voltage/Amperage Adjustment Control

6. Remote 10 Receptacle

7. Supplementary Protector CBI

8. Remote 14 Receptacle

9. Voltage/Amperage Control Switch

Control allows selection of either
panel or remote 14 for amperage or
voltage control.

10. Mode Switch

Switch determines both the process
and output On/Off control. Electrode
hot areas in gray are “contactor on”
positions.

Example: Preset for MIG process and steel wire

Control adjusts inductance for MIG welding.
Set Arc Control to desired wire type. Inductance
determines the “wetness” of the weld puddle.
As setting is increased (rotating Arc Control
clockwise), wetness (puddle fluidity) increases.
For best results, preset Arc Control to the wire
type. Then either increase or decrease setting
within wire type scale to make fine adjustment
to the welding arc.

Example: Stick Mode, 7018 Electrode

Control adjusts Dig when Stick mode is selected
on mode switch. Set Arc Control to desired
electrode type. For best results, preset Arc
Control in middle of the scale for appropriate
electrode type. Then either increase or decrease
setting within electrode type scale to make fine
adjustment to the welding arc.

ARC CONTROL

TIG

MIG

STICK

LIFT-ARC

TIG™

ELECTRODE HOT

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ARC CONTROL

TIG

MIG

STICK

LIFT-ARC

TIG™

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ELECTRODE HOT

Certified to both the Canadian and U.S. Standards for welding equipment.

Note: For input conductor and fuse size information consult the Owner’s Manual.

Arc Control

(Counter Clockwise)

Low Inductance

Weld Bead

Arc Control
(Clockwise)

High Inductance

Weld Bead