Lincoln Electric IM481-B Gate leads plug to Control P.C. board, To plug To T1 main transformer

Page 29

POWER RECTIFIER BRIDGE

DIAGRAM 1

PLUG TO SNUBBER BOARD

220

								P5								_			+
								P5

														220



									223					204
									223

221		X1	222					X2							X3

D1

SCR1

D2	ANODE	D3	To (+) side
			of capacitor
				bank
	CATHODE
			D4
SCR2	SCR3	ANODE
SCR2	SCR3
	GATE	CATHODE
			SHUNT
			+	_
			+
			204

Gate leads plug to Control P.C. board

P3

G1		G2		G3		204
G1		G2		G3
						204
						204

To plug

P1

To T1 main transformer

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Image 29

Contents IM481-B Safety Depends on YouSafety Electric Shock can kill Iii Welding and Cutting Sparks can Cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéPlease Examine Carton and Equipment For Damage Immediately Table of Contents Power ON-OFF Switch Meanings of Graphic SymbolsOutput Control LOCAL-REMOTE Switch Output Control DialThermal Protection Light Voltmeter SwitchCircuit Breaker Degree of protection provided by the enclosure Rating PlateSignifying the Earth Ground Connection Earth Ground ConnectionChassis Ground Connection Signifying the Chassis Ground ConnectionGeneral Machine Description Operational Features & ControlsRecommended Processes & Equipment Design SummaryRemote Control Connections Auxiliary Power ConnectionsWATER COOLER CONNECTOR Case FeaturesMETER OPTION Machine & Circuit Protection Thermal Protection LightParalleling Technical Specifications Safety Precautions InstallationInput Power Connections FALLING EQUIPMENT can causeOutput Cable Connections Installation of Field Installed OptionsOutput Cables Electric Shock can killConnection of CV 500-I to LN-22 or LN-25 Wire Feeder Control Cable ConnectionsUndercarriages K817P, K841 Safety Precautions ELECTRIC SHOCK can kill Power Source OperationOperating Instructions Duty Cycle Amps VoltsTerminal Strip Connections Front View of 14-PIN Connector ReceptaclePIN LEAD NO Function Machine and Circuit Protection VAC Auxiliary Power for Water CoolerRoutine Maintenance HOW to USE Troubleshooting Guide TroubleshootingTrouble Cause What To Do TROUBLESHOOTING GUIDEFaulty Output Control potentiometer Trouble Cause What To Do Fault Protection Operation Connecting the Remote Control to the MachinePower I/O Switch Check Output VoltagePower Rectifier Bridge Assembly Checking Procedure Remote Control CheckPower Diode Test Power Silicon Controlled Rectifier TestRubber Boot To plug To T1 main transformer Gate leads plug to Control P.C. boardEnhanced Diagram Page Page Precaucion Warnung