Lincoln Electric IDEALARC R3R 375-I Operator'S Manual Download Page 23

F-1

WIRING DIAGRAMS

F-1

IDEALARC® R3R 375-I, 500-I AND 600-I

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The

specific diagram for a particular code is pasted inside the machine on one of the enclosure panels.

ELECTRICAL SYMBOLS PER E1537

LEGEND

D5
D6
D7

POCKET AMPTROL SENSING BRIDGE

L1

DC OUTPUT FILTER

R1
R2
R3
R4

16

TO SUPPLY LINES

TO GROUND

PER

NATIONAL

ELECTRICAL

CODE

1

2

3

L1

L2

L3

ICR

233

232

231

H3

H2

H1

X2

X1

T2

RECONNECT PANEL SHOWN

CONNECTED FOR LOW VOLTAGE

4

5

6

7

8

9

1

2

3

232

231

H3

H2

H1

X2

X1

T2

233

TO GROUND

PER

NATIONAL

ELECTRICAL

CODE

ICR

L1

L2

L3

TO SUPPLY LINES

TO GROUND

PER

NATIONAL

ELECTRICAL

CODE

H3

H2

H1

X2

X1

T2

TO SUPPLY LINES

TO GROUND

PER

NATIONAL

ELECTRICAL

CODE

232

231

H3

H2

H1

X2

X1

T2

TO SUPPLY LINES

ICR

233

TO PRIMARY

COILS

PRIMARY CONNECTIONS

MAIN TRANSFORMER

1

2

3

L1

L2

L3

DIAL SELECTOR SWITCH

SCR1-D1
SCR2-D2
SCR3-D3
D4

SCR AND DIODE
RECTIFIER BRIDGE

T1
T2
T3

MAIN TRANSFORMER
CONTROL TRANSFORMER
POCKET AMPTROL

OPTION

TRANSFORMER

ICR

INPUT STARTER

( DASHED ITEMS ON WIRING

DIAGRAM ARE OPTIONAL )

CAVITY NUMBERING SEQUENCE
(COMPONENT SIDE OF BOARD)

A

B

C

D

E

F

10K OHM POT., OUTPUT CONTROL
10K OHM POT., ARC FORCE CONTROL
40 OHM

SW1
SW2
SW3
SW4

POWER SWITCH
MACHINE/REMOTE SWITCH

L1

D4

D1

D2

D3

SCR1

SCR2

SCR3

R3

204

204

204

205

206

SHUNT

218

R4

D5

D6

D7

219

219

201
202
203

204

204

209

208

217

CONTROL

P.C.

BOARD

SW1

PILOT LIGHT

231

235

235

232

W

THESE LEADS ARE

PRESENT ONLY WITH

OPTIONAL METER

KIT.

220

225

115V

G

G

Y

T3

G

OPTIONAL POCKET
AMPTROL P.C.
BOARD

77

76

75

75

217

206

205

204

204

214

75

210

211

R1

SW2

R2

204

208

209

224

OPTIONAL METER KIT

VM

AM

+

+

-

-

TO CONTROL BOX

-

+

217

217

A

A

115 V

201

202

203

7

S

S

10

1

4

5

6

66V

BOTTOM PRIMARY

TOP PRIMARY

T1

X1

X2

X3

SEC

SEC

SEC

16, 17, & 18 ARE PRESENT
ON 380/500 OR 460/575
MACHINES ONLY.

THERE IS NO 10-11-12
CONNECTION ON 380,

A

CHOKE

THERMOSTAT

SECONDARY

THERMOSTAT

233

231

204

ICR

1

2

3

L1

L2

L3

RECONNECT PANEL SHOWN

CONNECTED FOR 220V

H4

234

235

FAN MOTOR

HIGH TEMP LIGHT

221

222

223

G1 G2 G3

204

+

-

G1 G2 G3 204

226

220

204

211

210

213

77

212 76

SW3

A = AMBER
G = GREEN
W = WHITE
Y = YELLOW

COLORS

235

232

ARE MADE AT THE

SINGLE, 346V AND ABOVE

(EXCEPT 380V.)

220/380/415-440

SINGLE, BELOW 346V OR

DUAL VOLTAGE

380/500 OR 460/575

76

77

SW4

RECONNECT PANEL SHOWN

CONNECTED FOR LOW VOLTAGE

1

2

3

4

1

2

3

4

5

6

77

76

75

G

Y

218

219

J6

J7

1

2

3

4

5

6

7

8

214

75

213

212

201A

203A

J2

J4

201A

203A

J3

6
3
2

1
5

1

8

5

6

7

4

3

2

1

5

6

4

3

2

1

2

4

3

1

2

J1

.4 OHM POCKET AMPTROL SENSING RESISTOR

CONNECTOR AND THESE THREE
LEADS ARE NOT USED WHEN
OPTIONAL POCKET AMPTROL
IS PROVIDED.

4

2

1

3

4

2

1

RECTIFIER
BRIDGE

1

2

3

4

5

6

7

8

J5

SNUBBER BOARD

226

224

204

235

TO PRIMARY

COILS

TO PRIMARY

COILS

TO PRIMARY

COILS

231

233

(SWITCH SHOWN IN LOCAL POSITION)

220/380/415-440 OR
230/400V MACHINES.

REMOTE CONTROL RECEPTACLE

2

3

16

17

18

11

8

66V

S

66V

9

12

OPTIONAL POLARITY SWITCH
(60 Hz ONLY)

11

10

12

6

4

5

7

8

9

TO GROUND

PER

NATIONAL

ELECTRICAL

CODE

1

2

3

L1

L2

L3

ICR

233

232

231

H3

H2

H1

X2

X1

T2

TO SUPPLY LINES

RECONNECT PANEL SHOWN

TO PRIMARY

COILS

CONNECTED FOR 230V

230/400V

PRIMARY CONNECTIONS 1-7, 2-8 AND 3-9
ARE MADE AT THE MAIN TRANSFORMER

PRIMARY CONNECTIONS 4-7, 5-8 AND 6-9
ARE MADE AT THE MAIN TRANSFORMER

17

18

4-7, 5-8 AND 6-9

AUXILIARY COILS
(ON BOTTOM PRI.
COIL ASSEMBLIES)

IDEALARC R3R-400, 500-I, 500 & 600-I WIRING DIAGRAM

4

5

6

9

8

7

11

TO PRIMARY COILS

10

12

FLEX

LEAD

JUMPER

RECONNECT PANEL

A

A

A

A

INPUT BOX

LIFT BALE

CONTROL

CONTROL

BOX

AND FRAME

PANEL

REMOTE
RECEPTACLE

BONDED GROUNDING LEADS

(R3R-600-I ABOVE CODE 11200 ONLY)

 

AND

220-230/380-

400/440-460

GROUNDING STUD

BASE

F

L9376

Summary of Contents for IDEALARC R3R 375-I

Page 1: ...r part DO NOT INSTALL OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READ ING THIS MANUAL AND THE SAFETY PRECAUTIONS CON TAINED THROUGHOUT And most importantly think before you act and be careful For use wi...

Page 2: ...R WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING Read and understand the following safety highlights For additional safety information it is strongly recommended that you purchase a copy of...

Page 3: ...oling 3 h Never simultaneously touch electrically hot parts of electrode holders connected to two welders because voltage between the two can be the total of the open circuit voltage of both welders 3...

Page 4: ...ks and openings to adjacent areas Avoid welding near hydraulic lines Have a fire extinguisher readily available 6 b Where compressed gases are to be used at the job site special precautions should be...

Page 5: ...appropri s et non inflammables 4 Des gouttes de laitier en fusion sont mises de l arc de soudage Se prot ger avec des v tements de protection libres de l huile tels que les gants en cuir chemise pais...

Page 6: ...important when identifying the correct replacement parts On Line Product Registration Register your machine with Lincoln Electric either via fax or over the Internet For faxing Complete the form on th...

Page 7: ...lation Section A Input Power Connection A 1 Duty Cycle A 1 Output Connections A 1 Operating Instructions Section B Accessories Section C Maintenance Section D Troubleshooting Section E Troubleshooting...

Page 8: ...nd lead to the ground stud marked with the symbol Install the reconnect panel for the proper input voltage per the diagram pasted inside the access panel cover DUTY CYCLE The maximum output rating of...

Page 9: ...ol dial labeled I on the front of the machine indicates the output current On the R3R 375 I there is only one dial On the R3R 500 I and 600 I there are two dials The A range controls the current over...

Page 10: ...WITCH Remote Output Current Control F POLARITY SWITCH Factory installed option on domestic models only Electrode Polarity Positive Electrode Polarity Negative Do Not Switch While Welding G RATING PLAT...

Page 11: ...ROL AND K870 FOOT AMPTROL Connect directly to the 6 pin Amphenol on the front of the power source POCKET AMPTROL factory installed only The Pocket Amptrol option provides a remote current control for...

Page 12: ...required The probe tip should be kept in condition to provide sharp edges at the ends to assure penetration of heavy oxide coatings on the work piece A blunted tip could result in giving different wel...

Page 13: ...i ties that may contribute to the machine symptom Step 3 RECOMMENDED COURSE OF ACTION This column provides a course of action for the Possible Cause If you do not understand or are unable to perform t...

Page 14: ...ed 6 Input contactor coil open 7 Open winding on 115V pilot transformer 8 Power ON OFF switch not closing 9 Lead broken or loose connec tion in 115V starter circuit 10 Thermostats defective High Tempe...

Page 15: ...Electrode or work lead loose or broken 2 Open transformer primary or secondary circuit 3 Supply line fuse blown 4 Input line grounded causing single phase input 5 Input leads not connected to contact...

Page 16: ...Troubleshooting Section E 1 Input fuse blown Machine is single phased 2 One phase of main transformer windings open 3 Defective power bridge 1 Improper ventilation 2 Loaded beyond rating 3 Fan inoper...

Page 17: ...baffle 1 Poor work or electrode cable connection 2 Current too low 3 Welding leads too small 4 Open SCR or diode in power rectifier bridge 5 Control circuit problems 1 Input contactor contacts frozen...

Page 18: ...COURSE OF ACTION L Optional remote current control not functioning See Troubleshooting Section C before connecting 1 Current control switch in the wrong position 2 Leads 75 76 and 77 not con nected t...

Page 19: ...ng and replacing check repair are OK one at a time changes OCV each gate lead one at a time does NOT change OCV Codes below 9500 with power off remove leads from Identify gate lead that when Codes abo...

Page 20: ...rent control rheostat or the control circuit Only the green lead can and should be grounded to the machine case When extending the standard remote control make sure the leads are the same and the spli...

Page 21: ...crew Reading should be infinite 5 If either step 3 or step 4 fails replace the switch I REMOTE CONTROL CHECK For codes above 9500 the remote control Amphenol pin assignments are pin C 75 pin B 76 and...

Page 22: ...d a much higher resistance in Step c K POWER SILICON CONTROLLED REC TIFIER TEST The SCR must be mounted in the heat sink when making this test a Connect the ohmmeter set to the X10 scale leads to the...

Page 23: ...4 5 6 66V BOTTOM PRIMARY TOP PRIMARY T1 X1 X2 X3 SEC SEC SEC 16 17 18 ARE PRESENT ON 380 500 OR 460 575 MACHINES ONLY THERE IS NO 10 11 12 CONNECTION ON 380 A CHOKE THERMOSTAT SECONDARY THERMOSTAT 23...

Page 24: ...375 I 500 I AND 600 I F 2 NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual The specific diagram for a particular code is pasted inside the machin...

Page 25: ...RING DIAGRAMS IDEALARC R3R 375 I 500 I AND 600 I F 3 R3R 375 I 500 I and 600 I K817 or K817R K841 not shown Part No Type A B C D F G H M12244 7 R3R 32 00 15 39 3092 1 44 30 02 11 33 07 06 94 M12244 7...

Page 26: ...CHTEN Do not touch electrically live parts or electrode with skin or wet clothing Insulate yourself from work and ground No toque las partes o los electrodos bajo carga con la piel o ropa moja da Aisl...

Page 27: ...Sorgen Sie f r gute Be und Entl ftung des Arbeitsplatzes Mantenha seu rosto da fuma a Use ventila o e exhaust o para remover fumo da zona respirat ria Turn power off before servicing Desconectar el ca...

Page 28: ...and Service through Subsidiaries and Distributors Worldwide Cleveland Ohio 44117 1199 U S A TEL 216 481 8100 FAX 216 486 1751 WEB SITE www lincolnelectric com World s Leader in Welding and Cutting Pr...

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