Lincoln Electric Comprehensive Guide to the Lincoln Invertec V155 Portable Generator

E-5	THEORY OF OPERATION	E-5
	FIGURE E.5 — CONTROL BOARD

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								BLUE
	ON/OFF SWITCH			5	2		WHITE
				4	1	WHITE
		L	WIRE TIE			BLUE		PWR1 PWR2 PWR4 PW
						BLACK	AC1
		N				WHITE	AC2	INPUT BOARD
		G
115/230Vac							PE	W05X0701
								(SCHEMATIC: X0701)
50/60	Hz							RECONNECT
								BOARD
						BLUE		W05X0408

R3	DC+
	DC-
JP1

RED BLACK

RED		DC+
BLACK		DC-
JP1	Y/G	PE
		JP1	INVERTER BOARD
			W05X0519
			(SCHEMATIC: X0519)

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		FAN	WHITE	RED		JP4	(SCHEMATIC: X0408)
TWISTED CABLE				BLACK
RIBBON CABLE
PCB CONNECTOR CAVITY NUMBERING SEQUENCE
(VIEWED FROM COMPONENT SIDE OF P.C. BOARD)
1	4		2		16
	4 PINS		1	16 PINS	15

CONTROL BOARD
W05X0708-1
(SCHEMATIC: X0708)
PE	JP2

P1

N1

RED

BLACK

WHITE

SHUNT	-
	WHITE
BLACK
	RED

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CONTROL BOARD

The Control Board receives status and analogue sig- nals from the inverter board, input board and various sensors and feeds this information to the Weld Controller.

The Weld Controller is a micro-processor that uses these signals along with input from the Mode Switch and the Control Potentiometer to make decisions and change the machine mode and output to satisfy the requirements as decided by the operator. these changes are relayed to the PWM circuit on the Inverter Board to regulate the gate signals to the IGBT”s

The Weld Controler also responds to thermal and input errors to shut down the machine output. The error information is then displayed by the three LEDʼs on the front panel.

The Mode Switch , the Control Potentiometer and the three LEDʼs are all mounted on the Control Board.

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INVERTEC® V155-S