Miller IGB Owner's manual

Brand: Miller

Model: IGB

Type: Owner's manual

This manual is also suitable for

OWNER’S MANUAL

September 1996 FORM: OM-182 878A

Use above FORM number when ordering extra manuals.

IGBT/MOSFET Tester 043 553

WARNING

ELECTRIC SHOCK can kill;

SIGNIFICANT DC VOLTAGE exists after

removal of input power.

• Do not touch live electrical parts.

• Turn Off welding power source, wait 60 seconds,

measure voltage on input capacitors according to

Technical Manual, and be sure voltage is near zero

before making or changing meter lead connections

and before touching any parts.

STATIC ELECTRICITY can damage parts

on circuit boards.

• Put on grounded wrist strap BEFORE handling

boards or parts.

• Use proper static-proof bags.

Have only qualified persons familiar with and following

standard safety practices perform troubleshooting

procedures.

smwarn2.5 10/93

1-1. IGBT/MOSFET Tester Information

S-0880-A

1 IGBT/MOSFET Tester

Before use, install 9 volt batteries.

To check battery, connect Red and

Black leads together; test light

(LED) = On; battery okay.

2 Test Button

3 Test Light (LED)

1 23

Yellow

Black

Red

1-2. IGBT Power Module Testing Procedure

Step 1. Check IGBT module for

cracks in side of case or a separa-

tion of case from its base plate.

Replace any damaged part.

Step 2. Mark and disconnect

leads from C1, C2/E1, and E2

terminals.

Step 3. Disconnect gate lead

plug from circuit board.

Step 4. Hook up ALL tester

leads to perform Test 1.

LED On = Shorted; replace part

Step 5. Press button.

LED Off = Fails test; replace part

LED On = Passes test

Step 6. Repeat Steps 4 and 5 for

Test 2.

G1 (B1) Gate 1 or Base 1

G2 (B2) Gate 2 or Base 2

C1 Collector 1

C2/E1 Collector 2/Emitter 1

E2 Emitter 2

ST-801 132 / S-0880-A / S-0664

Static Hazard.

Put on grounded wrist strap.

Test 1

Test 2

Yellow

Red

Black

Yellow

Black

Red

G1 (B1)

G2 (B2)

OM-182 878 Page 2

1-3. MOSFET Power Transistor Testing Procedure

S-0880-A / S-0663

Step 1. Remove transistor from

circuit board.

Step 2. Hook up ALL tester

leads.

LED On = Shorted; replace part

Step 3. Press button.

LED Off = Fails test; replace part

LED On = Passes test

Yellow

Black

Red

Static Hazard.

Put on grounded wrist strap.

G Gate

D Drain

S Source

1-4. Electrical Diagrams

Circuit Diagram Wiring Diagram

SA-182 875 SA-182 876-A

1-5. Parts List

Description

Part

No.

Dia.

Mkgs.

Complete Assembly

Quantity

D1 083 850 LIGHT, ind red lens 2V LED 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PB1 175 389 SWITCH, PB MC NO SPDT 10A 115VAC 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

R1 078 431 RESISTOR, C .25W 330 ohm 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

R2 044 634 RESISTOR, MF .25W 332 ohm 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

R3 081 833 RESISTOR, CF .25W 2.7 meg ohm 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

R4 605 918 RESISTOR, C .25W 100 ohm 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1T 038 785 STRIP, terminal 3P solder 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

134 429 CASE SECTION, front/end 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

148 348 CASE SECTION, back/sides/end 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

156 170 HOLDER, battery 9V 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

604 825 CABLE, port No. 18 3/c (order by ft) 3ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

173 771 CLIP, alligator 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

173 774 CLIP, micro-gator 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

173 772 INSULATOR, alligator clip (red) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

173 773 INSULATOR, alligator clip (black) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

173 775 INSULATOR, micro-gator clip (yellow) 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .