Lincoln Electric Comprehensive Lincoln Welder Wiring Diagrams: Understanding SA-250 and More

SA-250 WIRING DIAGRAM

ELECTRICAL SYMBOLS PER E1537

LEAD COLOR CODE

CONTROL PANEL COMPONENTS

B-BLACK OR

R-RED OR

SHOWN AS VIEWED FROM REAR.

NEUTRAL BONDED TO FRAME

60A

GRAY

PINK

GLOW PLUGS

G-GREEN

U-BLUE

'

P10

61

NEUTRE RACCORDE AU BATI

N-BROWN

W-WHITE

12 11 10 9 8

3 2 1

Y-YELLOW

7 6 5 4

ENGINE

400D

J5

FAILURE

1 2 3 4 5 6 7 8 9 10 1

400E

N

-W

LAMP

J1

IDLER/ENGINE

2

U

701A

GND-A

3

SLIP RINGS

-

58

PROTECTION

OR

J2

4

P.C. BOARD

ALTERNATOR

+

R

+Y

700B

610

ROTOR

+

610

53

SLIP RING

700A

58A

53B

70

AC

600B

602B

NEAREST

57

AC

ENGINE

IDLER

TO IRON

600

GLOW

HOUR

56A

IDLER

SWITCH

-

METER

G

PLUG

START

SOLENOID

56

115 VOLT

41

1

41

+ -

IGNITION

230 VOLT

650

600A

2

RECEPTACLE

SWITCH

PUMP SOLENOID GND-B

RECEPTACLE

42

3

X

Y

48

GND-C

54B

400A

400B

15A.

703

4

42

W

52

54

FUSE

OR

602A

50B

58H

5

51A

212A

Y

602

R

50A

RHEOSTAT

6

300B

W

FUEL PUMP

J8

P9

702B

300A

R

OR

54D

TEMPERATURE

CB2

CB1

CB4

CB3

Y

SELECTOR

20A

20A

15A

15A

SWITCH/SENDER

400C

350

SWITCH

SWITCH FOR LOCAL OR

OIL PRESSURE

REMOTE CONTROL SHOWN

S

I TEMPERATURE

SWITCH/SENDER

GND-E

IN LOCAL POSITION.

WK G

GENERATOR

SA-250

STARTING

GAUGE

W

MOTOR

G

59

GND-F

S

GND-N

A

B

+ -

212B

+

GND-D

B

POWER

50

AMMETER S

ALTERNATOR

(GROUND SCREW

ALTERNATOR

I

AUXILIARY

5 4 3

2 1

NEAR FUSE)

G

OIL PRESSURE

EXC

10

WINDINGS

WELDER

51

GAUGE

+

LEAD BLOCK

N

51G

CURRENT

CR2 REED

200

W

TRANSFORMER

RELAY

U

GND-M

-W

W

701B OR +Y

346

GROUND

GROUND

347

POSITIVE

(CC+) & (CV+ WITH W.F.M.)

TO BASE

TO ENGINE

GROUND SCREW NEAR ENGINE GAUGES

NEGATIVE (CC-)

K924-5 REMOTE CONTROL (OPTIONAL)						WIRE FEED MODULE (OPTIONAL)
						ON MACHINE, REMOVE PLUG "P10" FROM CONNECTOR "J5".
						CONNECT PLUG "P5" ON W.F.M. TO CONNECTOR "J5" ON MACHINE.
					INLINE
					CONNECTORS	PLUG
					W.F.M.	(P5)
					CONTROL
	Y		X	PLUG FOR	PANEL
				REMOTE CONTROL		#8 LEAD	WIRE FEED
				POTENTIOMETER
					CONNECT TO POS. & NEG.	POS.
G					OUTPUT TERMINALS	NEG.	MODULE
					NEGATIVE CV
CONNECT
	B	W			OUTPUT TERMINAL
TO CASE
					PANEL	#2 HEAVY LEAD
RESISTORS						608
					CONNECT TO NEG.	609
					BRUSH HOLDER
						#2 HEAVY LEAD
						250 AMP THERMOSTAT ASSEMBLY
REMOTE CONTROL							MACHINE MUST NOT BE RUNNING
POTENTIOMETER BOX
						* WHEN MAKING THESE CONNECTIONS.

C

M20016

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. If the diagram is illegible, write to the Service Department for a replacement. Give the equipment code number..

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DIAGRAMS

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