OWNER’S MANUAL

MIC-4 Interface Control

1.

Safety Symbol Definitions

FORM: OM-874D

2011−01

093 324

DANGER! − Indicates a hazardous situation which, if not avoided, will result in death or serious injury. The possible hazards are shown in the adjoining symbols or explained in the text.

Indicates a hazardous situation which, if not avoided, could result in death or serious injury. The possible hazards are shown in the adjoining symbols or explained in the text.

Wear safety glasses with side shields.

Arc rays can burn eyes and skin − wear a welding helmet with correct filter, and cover exposed skin with nonflammable clothing.

NOTICE Indicates statements not related to personal injury.

Welding sparks can cause fire or explosion. Move flammables away. Do not weld on closed tanks or barrels − they can explode. Clean tanks or barrels properly.

Indicates special instructions.

Beware of electric shock from welding electrode or wiring.

Touching the electrode while in contact with the work or ground can cause electric shock. Always wear dry gloves. Keep all panels and covers closed.

Breathing welding fumes and gases can harm your health. Welding requires good ventilation. If ventilation is impossible, such as when welding in a confined space, use an air-supplied respirator.

CALIFORNIA PROPOSITION 65 WARNINGS

Welding or cutting equipment produces fumes or gases which contain chemicals known to the State of California to cause birth defects and, in some cases, cancer. (California Health & Safety Code Section 25249.5 et seq.)

This product contains chemicals, including lead, known to the state of California to cause cancer, birth defects, or other reproductive harm.

Wash hands after use.

2.

Specifications and Location

C

This unit is an interface control designed for use with a DIALARC ®

HF welding power source. This interface control provides a connection point for a remote contactor and amperage control device (not supplied) such as an FTC-23,

RFCS-23, or equivalent. The necessary interconnecting cords are supplied with this unit to connect it to the welding power source.

This control is equipped with two 6 ft. (1.8 m) cords for making connections to the welding power source control circuitry. Lead lengths must be considered when locating the control. The control can be placed on top of the welding power source or at a nearby location.

The service life and efficiency of the control are reduced when it is subjected to high levels of dust, dirt, moisture, corrosive vapors, and extreme heat.

B

A

A

B

C

7-1/2 in.

(191 mm)

9-1/2 in.

(241 mm)

8-3/4 in.

(222 mm)

Weight:

7.5 lbs

(3.4 kg)

ST-086 923-C

©

2011 MILLER Electric Mfg. Co.

3.

Connections

2

3

1

1 Amperage Control Plug

Route and connect 3-prong plug from control to welding power source Remote Amperage

Receptacle.

2 Contactor Control Plug

Route and connect 2-prong plug from control to welding power source Remote Contactor

Receptacle.

3 Remote Control Receptacle

The remote control device is not supplied with this unit. Obtain the desired control (an FTC-23,

RFCS-23, or equivalent), and route and connect plug to this receptacle.

See instructions supplied with the remote device for proper operation.

Using the supplied adapter cord: Allows remote controls with 14-pin plugs to connect to the 5-pin remote receptacle on MIC-4.

.

For proper operation of this control and the remote control device, rotate the Amperage

Adjustment Control on the welding power source to the

100 (maximum) position.

4.

Routine Maintenance

!

Turn Off all power before maintaining. Disconnect unit from power source before repairing or replacing cords.

3 Months

Replace

Cracked

Parts

Replace

Unreadable

Labels

Cord(s)

ST-086 923-C

5.

Troubleshooting

Trouble Remedy

No remote amperage control.

No remote output (contactor) control.

Set switches and controls on welding power source to proper positions.*

Check weld output on welding power source.

Secure cord connections or replace cords, if necessary.

Remote Hand Control switch in wrong position, control not so equipped, or poor connections.

Check switch settings, cord connections, and weld output on welding power source.

Secure cord connections or replace cords, if necessary.

*See welding power source Owner’s Manual.

OM-874 Page 2

6.

Circuit Diagrams and Wiring Diagram

PLG50

Z

WHT

A

SIL

BLK

B

X

GRN

RC51

A

503

B

501

E

506

C

504

B

CR

50

502

A

D

505

PLG51

BLK

WHT

4

CR50

7

F

D

C

E

171 996-A

187 974

OM-874 Page 3

OM-874 Page 4

107 681-B

7.

Parts List

3

5 6

2

4

1

7

14

8

9

10

13

12 11

ST-086 922-B

Item

No.

Dia.

Mkgs.

Part

No.

Description Quantity

. .

. .

1

2

. . . .

. . . . .

RC51

PC1

. . . .

. . . . .

. .

3 . . . . . . . . . . . . . . .

. .

4 . . . . . . . . . . . . . . .

. .

5 . . . . . . . . . . . . . .

. .

6 . . . . . . . . . . . . . . .

. .

7 . . . . . . . . . . . . . . .

.

.

.

.

. .

8

9

. . . .

CR50 . . . .

. .

. . . . . . . . . . . . . . .

10

11

12

13

. . . . . . . . . . . . . .

. . . . . . . . . . . . . .

. . . . . . . . . . . . . .

. . . . . . . . . . . . . .

.

14 . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . .

035 523

085 617

073 756

. .

. .

. .

CONNECTOR, circ 5skt 16S rcpt Amphenol MS-3102A-16S-8S

CIRCUIT CARD, interface control

STAND-OFF, No. 6-32 x .625 lg .250 hex female

. . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

086 000

+021 475

. .

. .

CASE SECTION, base/front/rear

WRAPPER

. . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

019 677 . .

HANDLE

134 327

052 964

139 041

. .

. .

. .

LABEL, warning general precautionary

RELAY, encl 24VDC DPDT

BUSHING, strain relief

170 593

. .

. .

PLUG, twlk 3P3W 20A 125V

039 618 PLUG, twlk 2P2W 20A 250V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

600 737 CABLE, port No. 16 3/c (order by ft)

130 003

. .

. .

. .

. . . .

CABLE, adapter (consisting of)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

604 988 CABLE, port No. 16 2/c (order by ft)

039 273

039 685

151 146

152 568

143 922

. . . .

. . . .

. . . .

. . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CONNECTOR, circ 5pin 16S plug Amphenol MS-3106A-16S-8P

CONNECTOR, circ clamp str rlf sz 16 Amphenol 97-3057-8

CABLE, shld No. 22ga 5/c (order by ft)

CONNECTOR & SOCKETS,

CONNECTOR, circ clamp str rlf sz 17-20 Amp 206070-3

. . . . .

. . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . .

6ft

1

1

1

1

6ft

1

1

2ft

1

1

1

1

1

1

4

1

1

1

+When ordering a component originally displaying a precautionary label, the label should also be ordered.

To maintain the factory original performance of your equipment, use only Manufacturer’s Suggested

Replacement Parts. Model and serial number required when ordering parts from your local distributor.

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Notes

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Notes

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Notes

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