Lincoln Electric R3R-500, R3R-300 service manual Electrical Diagrams

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NOTE: This diagram is for reference only. It may not be accurate

8434

L

TO SUPPLY LINES

TO GROUND

RECONNECT PANEL SHOWN

TO SUPPLY LINES

TO GROUND

PER

PER

CONNECTED FOR LOW VOLTAGE

RECONNECT PANEL SHOWN

NATIONAL

NATIONAL

CONNECTED FOR LOW VOLTAGE

ELECTRICAL

ELECTRICAL

15

6

9

H3

CODE

CODE

X2

L3

H3

6

9

3

X2

14

5

8

3

L3

T2

5

8

2

L2

T2

13

4

7

2

L2

H2

X1

4

7

1

L1

H2

X1

1

L1

H1

H1

PICK

HOLD

PICK

HOLD

UP

IN

UP

IN

TO

ICR

TO PRIMARY COILS

ICR

PRIMARY

233A

232A

231

233A

232A

231

COILS

NC

NC

SWITCH CRI

232

SWITCH CRI

232

380/500 OR 460/575

SINGLE, BELOW 346V OR

DUAL VOLTAGE

ELECTRICAL SYMBOLS PER E1537

LEGEND

13, 14, & 15 ARE PRESENT

RECONNECT PANEL SHOWN					TO SUPPLY LINES
CONNECTED FOR 380V .
								TO GROUND
									PER
FLEX LEAD JUMPER								NATIONAL
								ELECTRICAL
									CODE
6	9	3	11				H4	X2
					3	L3
5	8	2	10				H3		T2
					2	L2
4	7	1	12				H2
					1	L1		X1
					PICK	HOLD	H1
					UP	IN
						ICR
TO PRIMARY						NC
COILS			233A		SWITCH CRI			232A	232
					380V OR TRIPLE
					VOLTAGE
						TP1
							+
					D8
							_
					HIGH TEMP				232
				LIGHT			A		235
		FAN MOTOR			233	CHOKE		SECONDARY
					THERMOSTAT			THERMOSTAT		231
							234		235

PRIMARY CONNECTIONS	TO SUPPLY LINES
4-7, 6-9, AND 5-8			TO GROUND
ARE MADE AT THE				PER
				NATIONAL
MAIN TRANSFORMER .
			ELECTRICAL
			H3	CODE
				X2
	3
		L3			T2
	2	L2	H2	X1
	1	L1	H1
	PICK	HOLD
	UP	IN
TO PRIMARY		ICR
COILS			232A		231
233A		NC
	SWITCH CRI		232
	SINGLE, 346V AND ABOVE
	(EXCEPT 380V.)

Wiring Diagram-R3R-300

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for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine.

D5						ON 380/500 OR 460/575				V								115 V
D6	POCKET AMPTROL SENSING BRIDGE					MACHINES ONLY.
D7															201				202
L1	DC OUTPUT FILTER										13						14			15			203
R1	10K OHM POT., OUTPUT CONTROL									AUXILIARY COILS					66V				66V		66V
R2	10K OHM POT., ARC FORCE CONTROL										7					8				9
R3	40 OHM												S						S		S		204
R4	.4 OHM POCKET AMPTROL SENSING RESISTOR									TOP PRIMARY
																						THERE IS NO 10-11-12
SW1	POWER SWITCH										10						11			12
																						CONNECTION ON 380
SW2	MACHINE/REMOTE SWITCH										1						2			3		OR TRIPLE VOLTAGE
SW3	DIAL SELECTOR SWITCH																					MACHINES.
SW4	OPTIONAL POLARITY SWITCH (60 Hz ONLY)									BOTTOM PRIMARY
SCR1-D1											4						5			6								219
											T1
SCR2-D2		SCR AND DIODE											X1						X2	X3			204				218
SCR3-D3		RECTIFIER BRIDGE				L1							SEC						SEC	SEC
D4																												R4
	INPUT CONTACTOR BRIDGE																				220
D8																D1			D2	D3								219
																									204
T1	MAIN TRANSFORMER																					R3						D5
													D4
T2	CONTROL TRANSFORMER
									RECTIFIER BRIDGE											SCR2				SHUNT
T3	POCKET AMPTROL OPTION												SCR1								SCR3							D6
		TRANSFORMER																						+	-
TP1
	TRANSIENT PROTECTOR																											D7
ICR	INPUT STARTER																					204		205
											221		222				223			204								THESE LEADS ARE
COLORS	A = AMBER														226				G1 G2 G3				204		206			PRESENT ONLY WITH
										220									204									OPTIONAL METER
	G = GREEN									225									224									KIT.
	W = WHITE								G										G1 G2 G3 204
	Y = YELLOW									203A
					OPTIONAL POCKET
									Y	115V													6		201A
( DASHED ITEMS ON WIRING					AMPTROL P.C.					201A									2	1 3 4	2	1	3		201
									G														2		202
DIAGRAM ARE OPTIONAL )					BOARD
											1	2	3	4	5	6	7	8		J4	J2		1		203
										T3												J3
						1		G															5		203A
											226												4		204		232
2	1		5	1	J7	2		Y							J5
		4	1			3		G				SNUBBER BOARD
			6	2																							235	W
						4
		5	2																			1			204
			7	3		1		218																				PILOT LIGHT
3	1	6	3																			2			209
						2		219
			8	4																								235
																						3			208
4	2				J6	3		75											CONTROL
																						4
CAVITY NUMBERING SEQUENCE						4		76					OPTIONAL METER KIT							P.C.
																						5			75		231
						5		77					VM				AM			BOARD J1
(COMPONENT SIDE OF BOARD)						6																6			212
													-	+			-	+				7			213		235
																	205					8			217			SW1
				217									217
							75										206
				217
										212	76
									210		76				75		210		211			204	208		209
CONNECTOR AND THESE THREE LEADS
											77																224
ARE NOT USED WHEN OPTIONAL									211		77												R2
																	R1
POCKET AMPTROL IS PROVIDED
						77	76	75			213
										SW2
										(SWITCH SHOWN
										IN LOCAL	POSITION)
						A	B	C	D	E			FRAME GROUND
											F
						REMOTE CONTROL RECEPTACLE
				-												SW4													+
			THIS SHEET CONTAINS PROPRIETARY INFORMATION UNLESS OTHERWISE SPECIFIED TOLERANCE																						EQUIP.		IDEALARC R3R 300, R3R 375-I
			OWNED BY THE LINCOLN ELECTRIC CO. AND IS		ON HOLE SIZES PER E2056			.02	3-8-91N										THE LINCOLN ELECTRIC CO. TYPE
			NOT TO BE REPRODUCED, DISCLOSED OR USED		ON 2 PLACE DECIMALS IS				7-12-91A											CLEVELAND, OHIO U.S.A.								WIRING DIAGRAM
					ON 3 PLACE DECIMALS IS			.002
			WITHOUT THE EXPRESS PERMISSION OF																						SUBJECT					L 8434
					ON ALL ANGLES IS		.5 OF A DEGREE		3-6-92C											SCALE NONE
																													SHT.
			THE LINCOLN ELECTRIC CO.		MATERIAL TOLERANCE t(" ") TO AGREE
																					DATE 2-6-91			CHK		REF.	L8069	SUPÕSÕDÕG
						WITH PUBLISHED STANDARDS.													DR ALB										NO.

ELECTRICAL DIAGRAMS

R3R

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