Lincoln Electric NA-5NF, NA-5SF service manual Power PC Board L6252-1 Schematic, C D E F G H J

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G-5	ELECTRICAL DIAGRAMS
POWER PC BOARD (L6252-1) SCHEMATIC

G-5

Master

A B C D E F G H J

K

L	M
	525

A

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2

3

4

		CONTROL POWER AND
31	S1A	EMERGENCY STOP		531
			531
	CR7		TRAVEL
			RECEPTACLE
115 VAC	666	GND	25
			532
INPUT				AUTO
				OFF
			S2
	CR6		TRAVEL	HAND
	D2G

32S1B

532

CB1

531A

FLUX OR

WATER SOLENOID

RECEPTACLE

531 87

C1105	C1104
	87
CR2	CR1
D1K
	D6K
	TP102

R1

F101

TP101

631

PT		R104
102B			C104
			SCR
	SCR		102
	101
C101		R103
C102			PT

103B C121

	R101	WIRE FEED
	627	MOTOR FIELD
C1106	WH		LED
		C103	1C
	C1105 RED	R102	LED
	626		1D
	F102
			532

FIELD SUPPLY

540

B2L	C119
500
A6H	PT101A
C105	C106
PT101B	PT101C
103	104	R105
SCR	SCR
		D103
D101	D102	LED
		1E

ARMATURE SUPPLY

541

BLU

BLK

539

WIRE FEED MOTOR ARMATURE

TO TACH

PICK-UP

P.C. BOARD

FEED 587

FORWARD

D6G

C122

			A5H
		R106
+
C107		R110	R113
500
A6H			QU101
		C108
			C109
	R109	PT102A	PT103A	C110
R107		Q102	R111	C112
Q101
			R112	Q103
R108		C120
			C111
			500
			A6H

			6682-1
		SHT. NO. L
NA-5 SCHEMATIC	POWER CIRCUIT		10-3-81
				SUP'S'D'G
				REF.
EQUIP. TYPE	SUBJECT
LINCOLN ELECTRIC CO.	CLEVELAND,OHIO U.S.A.	SCALE NONE		DADDATE 7-2-92 CHK

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GND

D108

FEED DIRECTION CIRCUIT

THE DR

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5

6

7

2

CR3

D3K

4

531B

532

					X101				525
					IN	OUT
			D104	D105					+15V
					GND	D110		R114	ANALOG
									ANALOG
BLK		RED		+		+			POWER SUPPLY
		18		C114		C116
115		VAC	WHT					LED 1A	510
VAC		18		C115 +	DZ101	C117 +	D111	R115	ZERO-VOLT
			C113						REFERNCE
		VAC
BLK		RED
	T1A
		D106			GND			LED 1B
		YLW		D107					500
					IN	OUT
			601						-10V
					X102
		10
			METER		D109
		VAC	SUPPLY
	T1B	YLW	602	D112	D113			610	RELAY
BLK		ORG				LED 1F			POWER SUPPLY
			C118
115		115
VAC		VAC	TP			R116
BLK		ORG	103
	T2A	BRN		D114	D115
		24							500
					INTERFACE OPTION
		VAC
					POWER SUPPLY

No.
UNLESS OTHERWISE SPECIFIED TOLERANCECh'ge. Sht.	20-11-81G	-7-984A	-11-992J	-31-394E
	ON HOLE SIZES PER E2056	ON 2 PLACE DECIMALS IS .02 ON 3 PLACE DECIMALS IS .002 ON ALL ANGLES IS .5 OF A DEGREE 592N-18-	MATERIAL TOLERANCE t(" ") TO AGREE	WITH PUBLISHED STANDARDS.

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FOR POWER P.C. BOARDS L6252-2 OR HIGHER USE L8956 SCHEMATIC FOR COMPONENT VALUES AND CIRCUIT CONNECTIONS.

T2B BRN

INFORMATION AND IS USED

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L6682-1

POWER P.C. BOARD

R.F. BYPASS P.C. BOARD

COMPONENTS NOT ON P.C. BOARD

C101

.005/1400

D101

16A, 400 V

Q101

2N4123

SCR 101

8A, 600V

FOR R.F. BYPASS P.C. BOARDS M14133-1 OR

CB1

5A. CIRCUIT BREAKER

C102

.15/200

D102

16A, 400 V

Q102

2N5816

SCR 102

8A, 600V

HIGHER USE S20995 SCHEMATIC FOR

C103

50/250

D103

16A, 400 V

Q103

2N5816

SCR 103

16A, 400V

COMPONENT VALUES AND CIRCUIT CONNECTIONS.

CR1

SPST, N.O. FLUX OR WATER

C104

.15/200

D104

QU101

UJT

SCR 104

16A, 400V

CR2

SPST, N.O. TRAVEL

C105

.047/100

THRU

1A, 400 V

R101

C1101

.0047/3000

ARC VOLTAGE BY-PASS

CR3

SPST, N.O. POWER SOURCE OUTPUT

C106

.047/100

D111

40, 12W

TP101

CR6

SPST, N.O. SOLID STATE, OPTIONAL

C1102

(SEE SCHEMATIC "C")

C107

4.7/35

D112

R102

68K

TP102

150V, 10J

LINC-FILL PILOT RELAY

C1103

.0047/3000

C108

.047/100

THRU

1A, 1000 V

R103

100

TP103

FLUX SOLENOID BY-PASS

CR7

OPTIONAL LINC-FILL BY-PASS CONTACTOR

C1104

C109

.022/25

D115

R104

100

C1105

.0047/3000

MOTOR FIELD BY-PASS

C110

.022/25

R105

10K, 2W

X101

+15V VOLTAGE

R1

2, 50W

C1106

C111

.022/25

DZ101

5.1 V., 1 /2 W

R106

100

REGULATOR

C112

.022/25

R107

10K

X102

-5V VOLTAGE

S1

DPST, CONTROL POWER AND

C113

.22/100

F101

1/ 2A SLOW BLOW,

R108

47K

REGULATOR

EMERGENCY STOP

C114

500/50

POWER SUPPLIES FUSE

R109

4.7K

S2

SPDT, TRAVEL

C115

500/50

F102

1/ 2A SLOW BLOW,

R110

6.8K

C116

4.7/35

FIELD FUSE

R111

680

T1A

36 VCT, 300mA SECONDARY

C117

18/15

RED LIGHT

R112

47K

T1B

10 VAC, 600mA SECONDARY

C118

.02/600

LED 1A

R113

680

T1C

SEE LOGIC SCHEMATIC "D"

C119

.047/100

THRU

EMITTING

R114

4.7K

T2A

115VAC, 80mA SECONDARY

C120

.022/25

LED 1F

DIODE

R115

3.3K

T2B

24VAC, 30mA SECONDARY

C121

.02/600

PT101

1:1:1

R116

68K

C122

.022/25

PT102

PULSE

PT103

TRANSFORMER

KEY TO SYMBOLS

INPUT CONTROL CABLE CONNECTION

POWER SUPPLY SOURCE POINT

COMMON CONNECTION TO ANALOG POWER

SUPPLY; 510 A5H

SCHEMATIC LOCATION REFERENCE

HORIZONTAL CO-ORDINATE LETTER VERTICAL CO-ORDINATE NUMBER SCHEMATIC IDENTIFICATION LETTER

UNLESS OTHERWISE SPECIFIED, COMPONENT VALUES OF: CAPACITORS = MFD/VOLTS

RESISTORS = OHMS, 1 2 /WATT

SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY NOT SHOW THE EXACT COMPONENTS

OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE NUMBER.

A.N.S.I. ELECTRICAL SYMBOLS PER E1537

THIS SHEET CONTAINS PROPRIETARY OWNED BY THE LINCOLN ELECTRIC CO.	NOT TO BE REPRODUCED, DISCLOSED OR WITHOUT THE EXPRESS PERMISSION OF	THE LINCOLN ELECTRIC CO.
CONTROL CODES	8400	8993
FOR NA-5

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not avail- able from Lincoln Electric. This information is provided for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.

NA-5