Lincoln Electric SVM200-A service manual Figure E.3 Input Power & Distribution

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E-3	THEORY OF OPERATION	E-3
	FIGURE E.3 - INPUT POWER & DISTRIBUTION

VIDEO

RECEPTACLE

				FROM
MONITOR		VGA	<
				CPU
		SPLITTER
				VGA 1
GREEN LED	12 VDC			12 VDC
12 VDC
SUPPLY

TERMINAL

STRIP

115/240 VAC 50/60 HERTZ

SINGLE PHASE

ON

SWITCH

GREEN LED
	5 VDC		POLHEMUS
5 VDC			INTERFACE
	S
SUPPLY			MODULE
	I
	G	U
	N
	A	S
	L	B

CPU

COMPUTER ASSEMBLY TO VGA SPLITTER

	5 VDC	FMD
		CONTROL
WELDING		UNIT
STAND	VISUAL AND AUDIO SIGNALS
HELMET
VGA 3 + 4 AND AUDIO 2

12 VDC

RELAY PC

BOARD

MIG GUN

DEVICE

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INPUT

INTERLOCK			U
RELAY			S
		U	B		PROCEDURE SELECTIONS
5 VDC USB			INTERFACE
		S	MODULE
		B
	SIGNAL		DIGITAL
				I/O		MOTOR CONTROL COMMANDS
	AUDIO 1

12 VDC

STICK ELECTRODE

DEVICE

MOTOR

SIGNALS

MOTOR

CONTROL

PC BOARD

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AUDIO	INTERFACE
	MODULE
RECEPTACLE		USER INTERFACE
	DIGITAL
		CONTROLS AND
	(USB)
		INDICATORS
		(MULTIPLE DEVICES)
	DISPLAY
	LED
	PC BOARD

INPUT POWER & DISTRIBUTION

The single phase input power (115-240VAC) is applied through a terminal strip and a momentary switch to four discreet components. They are the computer assembly (CPU), the 5VDC supply, the 12VDC supply and the monitor. These components rectify the AC input and regulate the resultant DC voltage to operate the inter- nal electronics of the VRTEXTM 360.

When the CPU has been energized the momentary “ON” switch is bypassed by the interlock relay. The 5VDC created by the CPU is applied, via a USB cable to the interlock relay. The independent 5VDC supply provides power to the Polhemus Interface Module, and the FMD Control Unit. The other independent 12VDC supply provides power to the VGA Splitter and via the Relay PC Board to the Motor Control Board.

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NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion

VRTEX TM 360