G-5
ELECTRICAL DIAGRAMS
NA-5
POWER PC BOARD (L6252-1) SCHEMATIC
6682-1
Ch'ge. Sht. No.
11-20-81G
9-7-84A
5-18-92N
9-11-92J
3-31-94E
t
UNLESS OTHERWISE SPECIFIED TOLERANCE
ON HOLE SIZES PER E2056
ON 2 PLACE DECIMALS IS .02
WITH PUBLISHED STANDARDS.
ON 3 PLACE DECIMALS IS .002
ON ALL ANGLES IS .5 OF A DEGREE
MATERIAL TOLERANCE (" ") TO AGREE
EQUIP.
TYPE
SUBJECT
DR
CHK
REF.
SUP'S'D'G
SHT.
NO.
THE LINCOLN ELECTRIC CO.
THIS SHEET CONTAINS PROPRIETARY INFORMATION
OWNED BY
AND IS
NOT TO BE REPRODUCED, DISCLOSED OR USED
THE LINCOLN ELECTRIC CO.
L
WITHOUT THE EXPRESS PERMISSION OF
CR7
666
CR6
D2G
GND
532
25
S2
TRAVEL
531
S1A
CONTROL POWER AND
EMERGENCY STOP
531
TRAVEL
RECEPTACLE
AUTO
OFF
HAND
CR2
D1K
C1104
C1105
531
87
FLUX OR
CB1
531A
CR1
D6K
87
TP102
F101
R1
TP101
C101
PT
102B
R104
C104
SCR
102
631
R103
C102
SCR
101
PT
103B
R101
627
C1106
C1105
LED
LED
1C
1D
R102
C103
WH
RED
626
F102
C121
532
D101
D102
C105
C106
PT101B
PT101C
SCR
SCR
103
104
D103
R105
LED
1E
WIRE FEED
MOTOR
ARMATURE
BLU
BLK
TO TACH
PICK-UP
P.C. BOARD
539
541
115 VAC
INPUT
S1B
32
GND
532
WATER SOLENOID
RECEPTACLE
WIRE FEED
MOTOR FIELD
B2L
C119
PT101A
540
500
A6H
R112
C111
Q103
C112
R111
PT102A
C110
QU101
Q102
C120
R108
R107
Q101
C122
500
A6H
587
D6G
FEED
FORWARD
R113
R110
C109
R109
C108
+
C107
500
A6H
R106
525
A5H
2
4
D3K
CR3
532
531B
BLK
BLK
RED
RED
115
VAC
18
18
VAC
VAC
T1A
D106
D107
C113
WHT
D104
D105
C114
+
IN
X101
OUT
GND
D108
C116
+
D110
R114
LED 1A
IN
X102
OUT
GND
C117 +
D111
R115
LED 1B
D109
DZ101
C115
525
+15V
ANALOG
510
ZERO-VOLT
REFERNCE
500
-10V
500
RELAY
POWER SUPPLY
ANALOG
POWER SUPPLY
FEED DIRECTION CIRCUIT
ARMATURE SUPPLY
FIELD SUPPLY
610
LED 1F
R116
D113
D112
D114
C118
TP
103
ORG
T2A
115
VAC
ORG
BLK
BRN
115
VAC
T2B
BLK
VAC
24
INTERFACE OPTION
POWER SUPPLY
C101
C102
C103
C104
C105
C106
C107
C108
C109
C110
C111
C112
C113
C114
C115
.15/200
.047/100
.022/25
.022/25
.022/25
.22/100
.15/200
.047/100
.022/25
POWER P.C. BOARD
C116
C117
C118
C119
C120
C121
C122
.005/1400
50/250
.047/100
4.7/35
500/50
500/50
4.7/35
18/15
.02/600
.047/100
.022/25
.02/600
.022/25
D101
16A, 400 V
D102
D103
D104
THRU
D111
D112
THRU
D115
16A, 400 V
16A, 400 V
1A, 400 V
DZ101
5.1 V., 1 2 W
/
F101
/
1 2A SLOW BLOW,
1 2A SLOW BLOW,
POWER SUPPLIES FUSE
/
F102
FIELD FUSE
LED 1A
LED 1F
THRU
RED LIGHT
EMITTING
DIODE
PT101
PT103
1:1:1
PULSE
TRANSFORMER
PT102
Q101
Q102
Q103
QU101
2N4123
2N5816
2N5816
UJT
R101
R102
R103
R104
R105
R106
R107
R108
R109
R110
R111
R112
R113
R114
R115
R116
40, 12W
68K
100
100
10K, 2W
100
10K
47K
4.7K
6.8K
680
47K
680
4.7K
3.3K
68K
SCR 101
8A, 600V
SCR 102
SCR 103
SCR 104
8A, 600V
16A, 400V
16A, 400V
TP101
TP102
TP103
150V, 10J
X101
+15V VOLTAGE
REGULATOR
X102
-5V VOLTAGE
REGULATOR
.0047/3000
C1101
C1102
C1103
C1104
C1105
C1106
.0047/3000
.0047/3000
ARC VOLTAGE BY-PASS
(SEE SCHEMATIC "C")
FLUX SOLENOID BY-PASS
MOTOR FIELD BY-PASS
R.F. BYPASS P.C. BOARD
CB1
CR1
CR2
CR3
CR6
CR7
5A. CIRCUIT BREAKER
SPST, N.O. FLUX OR WATER
SPST, N.O. TRAVEL
SPST, N.O. POWER SOURCE OUTPUT
SPST, N.O. SOLID STATE, OPTIONAL
LINC-FILL PILOT RELAY
OPTIONAL LINC-FILL BY-PASS CONTACTOR
R1
S1
S2
T1A
2, 50W
EMERGENCY STOP
SPDT, TRAVEL
36 VCT, 300mA SECONDARY
T1B
10 VAC, 600mA SECONDARY
T1C
T2A
T2B
115VAC, 80mA SECONDARY
24VAC, 30mA SECONDARY
COMPONENTS NOT ON P.C. BOARD
KEY TO SYMBOLS
INPUT CONTROL CABLE CONNECTION
POWER SUPPLY SOURCE POINT
COMMON CONNECTION TO ANALOG POWER
A5H
SCHEMATIC LOCATION REFERENCE
HORIZONTAL CO-ORDINATE LETTER
VERTICAL CO-ORDINATE NUMBER
CODE NUMBER.
CIRCUIT BOARD MAY CHANGE WITHOUT AFFECTING THE
SINCE COMPONENTS OR CIRCUITRY ON A PRINTED
INTERCHANGEABILITY OF A COMPLETE BOARD, THIS
DIAGRAM MAY NOT SHOW THE EXACT COMPONENTS
OR CIRCUITRY OF CONTROLS HAVING A COMMON
A.N.S.I. ELECTRICAL SYMBOLS PER E1537
UNLESS OTHERWISE SPECIFIED, COMPONENT VALUES OF:
CAPACITORS = MFD/VOLTS
RESISTORS = OHMS, 1 2 WATT
/
1
2
3
4
5
6
7
A
B
C
D
E
F
G
H
J
K
L
M
FOR NA-5 CONTROL CODES
8400
8993
NA-5 SCHEMATIC
POWER CIRCUIT
DAD
NONE
6682-1
10-3-81
7-2-92
THE LINCOLN ELECTRIC CO.
CLEVELAND, OHIO U.S.A.
EQUIP.
TYPE
SCALE
SUBJECT
DR
DATE
CHK
REF.
SUP'S'D'G
SHT.
NO.
L
A
31
1A, 1000 V
PT103A
SCHEMATIC IDENTIFICATION LETTER
DPST, CONTROL POWER AND
SEE LOGIC SCHEMATIC "D"
D115
BRN
+
YLW
T1B
VAC
10
YLW
601
METER
SUPPLY
602
SUPPLY; 510
SCHEMATIC FOR COMPONENT VALUES AND CIRCUIT CONNECTIONS.
FOR POWER P.C. BOARDS L6252-2 OR HIGHER USE L8956
FOR R.F. BYPASS P.C. BOARDS M14133-1 OR
HIGHER USE S20995 SCHEMATIC FOR
COMPONENT VALUES AND CIRCUIT CONNECTIONS.
G-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.
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