Lincoln Electric IDEALARC SP-250 Service Manual page 109

G-9
2 LINE X 16 CHAR.
ALPHA-NUMERIC
LCD DISPLAY
AUTO
PROCESS
WIRE/
GAS
MEMORY
1 2
SPOT SWITCH
TIMERS SET SET
OFF DISPLAY DISPLAY
KEYPAD MATRIX
N.F.
TO
WORK
N.A.
N.J.
THUMB
SWITCH
327
INC. DEC.
326
324
TRIGGER
325
L1 L2
H1 H4
LINE
SWITCH
S1
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.
IDEALARC SP-250
WIRING DIAGRAM FOR CODE 9402
SP-250 (DUAL VOLTAGE) - WIRING DIAGRAM
A 541B
539B
B (J7)
1 *
C 322
2
(J13)
D 321
3
E 325B
4
1 2
F 324B
5
OPTIONAL SPOOL OR PULL
6
GUN RECEPTACLE
R
7
B
(J1)
8 *
9
10
MANUAL 11
12
13
N.D.
14
15
SAVE 16
5
3
1
(J2)
7 *
9
3 4 5
6
8
2
IPM VOLTS
TOGGLE
4
4 5
B R
PIEZO
ALARM
N.C.
W 541
MOTOR/
T R 515
327 GEARBOX
P.M. A
U 555
C
324 H B 206
325 B 539
206
207
326 N.B.
320 326
N.E.
N.G.
R.F. FILTER
THERMOSTAT THERMOSTAT
S3 S4
X5
202
X6
204A
X7 208
T1 203
X1
H1
H1 SCR 1
250V
470A
204
X2
SCR HEATSINK
ASBLY
H2
H2
X3
SCR 2
250V
470A
P2
X4
H3
H3 209
POWER TRANSFORMER D1
300V
85A
H1
206
C1 C2 C3 C4
C1 THRU C4
30,000 MFD
+ + + +
50V
OUTPUT
CHOKE
204S
ELECTRICAL DIAGRAMS
CONTROL BOARD 1
2
(J8)
3
4
3 4 *
(J9) *
(J4)
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8 9 10
208 1
209 2
(J6)
N.D. 206 3
*
(J5)
*
GND 4
204A 5
202
6
1 2 3 4
1 2 3 4 5 6 203 7
(J3)
325 8
204S
9
207 10
320 11
204 12
1
G1
13
G2 14
GND
325
R.F. TOROID AS'BLY.
TO SINGLE PHASE
SUPPLY LINE
L1
L2
H4
W
GND
H2 H3
TO GROUND PER
L1
NATIONAL ELECTRICAL
LOW V. HIGH V.
G1
CODE
B
L2
GND. RECONNECT PANEL
G
G2
N.E.
P2
T1 T2
P1 P2
FAN
S2
MOTORS
THERMOSTAT
15 OHMS
100 W
R2
2.5K
207
10W
N.H.
SP - 250
SPOOL GUN GAS
MODULE SOLENOID
1 541B
2 321
3 324B
6 539B
7 322
(J12)
*
8 325B
4
5
9
GENERAL INFORMATION
10
ELECTRICAL SYMBOLS PER E1537
(J11)
*
COLOR CODE:
B - BLACK
W - WHITE
R - RED
2 3 4 5 6 7 8
U - BLUE
*
INDICATES CONNECTOR CAVITY NO.
RF CHOKE
AS'BLY
NOTES
N.A. WELDING CABLE MUST BE OF PROPER CAPACITY FOR THE
CURRENT AND DUTY CYCLE OF IMMEDIATE AND
FUTURE APPLICATIONS.
N.B. THIS DIAGRAM SHOWS THE "ELECTRODE" POLARITY
"POSITIVE". TO CHANGE POLARITY, TURN THE UNIT
OFF AND REVERSE LEAD CONNECTIONS AT CABLE
CONDUCTOR STRAP AND WORK STUD.
N.C. CONNECTOR SHOWN GEARBOX SIDE VIEW.
N.D. CONNECTORS MOUNTED ON NON-COMPONENT SIDE
OF BOARD.
N.E. THERMOSTATS MOUNTED ON CHOKE COIL .
S2 MOUNTED CLOSEST TO FAN; S3 MOUNTED CLOSEST TO
POWER TRANSFORMER.
N.F. KEYPAD MATRIX SHOWN FRONT VIEW.
N.G. THERMOSTAT S4 MOUNTED ON FAN SENSOR BRACKET
N.H. RESISTOR R2 MOUNTED ON FAN SENSOR BRACKET.
N.J. CONNECTOR SHOWN PIN SIDE VIEW.
CAVITY NUMBERING SEQUENCE
(COMPONENT SIDE OF P.C. BOARD)
1 16 1
J1
J2
1 7
1 5 1
J4
J3 J9
J11
8 14 10
6 5
1 2 1 3
J7
J12
J8
3 4 4 6
(NON-COMPONENT SIDE OF BOARD)
1 2 1 3
J5 J6
3 4 4 6
G-9
9
4
8
10-19-90N
L7976
IDEALARC SP-250