Lincoln Electric SVM154-A service manual Schematic Display PC Board, 5VA

Page 95

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G-7

ELECTRICAL DIAGRAMS

G-7

SCHEMATIC - DISPLAY PC BOARD

					5V_A																																																						POINTSOURCE SUPPLYPOWER			CONNECTIONGROUND EARTH		RED AEH LEBU OD	ICTAM EHC SD RAO B.C			L10138
																																											2	4	7	8	3	8		3	8			EDSU .ON TLAS	23R-39LED			GENETSUPPLYVOLTA		CONNECTIONCOMMON	CONNECTIONFRAME							L10138
																																	16	BANK4			a	7					2	4	7	8	3	8		3	8	3	8														.SHT NO.
																																	16	BANK4	X5		a	7			1					1			1		1	3	8
																																	15	BANK3	X5		b	6			1	C				2			2		1
																																	15	BANK3			b	6			3	C				2			2		2					C-11
							00K.1		00K.1		00K.1		00K.1		00K.1		00K.1		00K.1	R27	00K.1												3	Vdd			c	5			3	B				4			4		4						LSD-2
TO KEYPAD								R2		R3		R4		R5		R6		R7															3	Vdd			c	5			5	B				5			5		4
						R1																											13	BANK2			d	4			5	DP				6			6		5
																																	13	BANK2			d	4			6	DP				6			6		6
																																	9	BANK1			e	2			6	A				7			7	DISP3	7
																																	9	BANK1			e	2			9	A				9	DISP2		9	DISP3	7	DISP4
																																	17	BANK5			h	19			9	D	DISP1			10			10		9						EB								.P
																																	17	BANK5			h	19				D	DISP1			10			10		10						EB								.P
																																	12	DATA IN		Vss		14																			LA								YA
																																	11	CLOCK			g	20																											LP			.G
A		J10	COLD FEED FORWARD																														10	/ENABLE			f	1																											ISD			JHKK/M7/29/96CHK.SUP’S’D’DATE
A	7	J10	COLD FEED FORWARD																				R9										18	DATA OUT		Rx		8																		MFDSPECIFIED)=OTHERWISECAPACITORS(.022/50VUNLESS									ISD
	7																						R9											DATA OUT		Rx
																							475											MC14489
		J10																					475
B			COLD FEED REVERSE																																																													.
B	8		COLD FEED REVERSE																				R10																																									EQUIP TYPE
	8																						R10														R28
C		J10	GAS PURGE																				475									16					R28
C	9	J10	GAS PURGE																				R11				11	A			Vcc	16
	9																						R11				12	B			CLK1	2						500
																							475				12	B			CLK1	2
		J10																					475				13	C	X3		SS/PL	1
D			FEEDER/SCHEDULE SELECT																								13	C	X3		SS/PL	1
D	5		FEEDER/SCHEDULE SELECT																				R12				14	D			QH	9																																		EN
																							475				3	E			/QH	7
																							475					E			/QH
E		J10	DUAL PROCEDURE																								4	F			CLK2	15																																		ON
	6																						R13				5	G			SA	10	16	BANK4		50K.1	a	7							3	8	3	8		3	8	3	8	NTIOAM RFO INLA REN EG	E1537PERSYMBOLS ELECTRICAL		(SPECIFIED)=OhmsOTHERWISERESISTORS1/4WUNLESS	SPECIFIED)OTHERWISEDIODES=1A,400V(UNLESS		B1AL10138E: MAFILEN				.OCICRTCEL EN LOC INLE HT	A.U.S.,OHIOELANDCLEVSUBJECT
																							475				8	GND			H	6	16	BANK4	X6		a	7					1			1			1		1	3	8														SCALE
		J10																					475				8	GND			H	6			X6								1			1			1		1
F		J10	TRIGGER MODE SELECT																										74HC165				15	BANK3			b	6					2			2			2		2
F	4		TRIGGER MODE SELECT																				R14						74HC165				3	BANK3			b						4			4			4		2
	4																						R14										3	Vdd			c	5					5			5			5		4
																							475										13	BANK2			d	4					6			6			6		5
		J10																					475										13	BANK2			d	4					6			6			6		6
G		J10	TIMER SELECT																														9	BANK1			e	2					7			7			7	DISP7	7
G	3		TIMER SELECT																				R15										9	BANK1			e	2					9	DISP5		9	DISP6		9	DISP7	7	DISP8
	3																						R15										17	BANK5			h	19				10				10			10		9
																							475										17	BANK5			h	19				10				10			10		10
		J10																					475										12	DATA IN			Vss	14
H		J10	CONTROL SELECT																														12	DATA IN			Vss	14
H	2		CONTROL SELECT																				R26										11	CLOCK			g	20																														.
		J10																					475										10	/ENABLE			f	1																														DR
	1																														500		18	DATA OUT			Rx	8
COM.																																		MC14489
COM.				500
				500			TO CONTROL P.C. BOARD
554		J11		MISO			TO CONTROL P.C. BOARD																													50K.1	R29																								MAYGRAM DIA	CODECOMMON A
		J11
		3											R20
		3											R20																									500
551		J11		LATCH									475																									500
		J11																		13				12					1			2
		4										R17								13		X4		12					1	X4		2
		4										R17										X4								X4																															THISBOARD, COMPLETEA OFGEABILITY INTERCHANTHE GAFFECTIN WITHOUT	GHAVIN CONTROLSOF CIRCUITRYOR COMPONENTSEXACT THESHOW NOT
												475				1	C5																																											GECHAN MAYBOARD CIRCUITPRINTED AON CIRCUITRYOR COMPONENTSSINCE
																	.0047
																2	50V																						9	BANK1				a	7
																																							9	BANK1	X7			a	7	LED1			LED5		LED8
		J11															500																						13	BANK2	X7			b	6
552		J11		SCK													500			11				10			5			6									13	BANK2				b	6
552		5		SCK								R18								11		X4		10			5	X4		6									3	Vdd				c	5
		5										R18										X4						X4											3	Vdd				c	5
												475																											15	BANK3				d	4																				97-25-
																1	C6																						16	BANK4				e	2																			o.e.Sht.N XA
																2	.0047																						17	BANK5				f	1																			o.e.Sht.N XA
																2	50V																						12	DATA IN					14																			’ghC
																500																							12	DATA IN			Vss		14	LED2			LED6		LED9													’ghC
																500																							10	/ENABLE				g	20
553		J11		MOSI																																			11	CLOCK				h	19																			TOLERANCESPECIFIEDOTHERWISEUNLESS PERE-2056SIZESONHOLES IS+.O2DECIMALSON2PLACE
553	6			MOSI								R19																											18	DATA OUT			Rx		8
	6											R19																											18	DATA OUT			Rx		8
												475				1	C7																							MC14489																									OO2.+ ISDECIMALS PLACE3 ON	GREEDE AOF 5.+ ISGLES ANALL ON	GREEATO ("t")TOLERANCE MATERIAL	STANDARDSPUBLISHED WITH
																1	C7
				R23	10K		R24	10K	R25	10K						2	.0047																													LED3			LED7		LED10
																2	50V																												50K.1

																500
				500									5V_A																																	LED4					LED11
				500																																										500
																	5V_A																													R30													:TES				.NUMBER
																																														R30													:TES				.NUMBER
																																																											NO	.A.N
				R32								D2
				R32
				100													16					Vdd		3		Vdd	3
		J11		R33													16					Vdd		3		Vdd	3
512A		J11		R33							X1																											9					a	7
512A		7		100																C1			X5		C3	X7				C10								9	BANK1		X8			7
		7		100				IN					OUT				X3						X5			X7												13	BANK1		X8			6		LED12			LED16		LED18		LED22
				R34				IN					OUT																										BANK2				b
				R34																0.1					0.1					0.1									BANK2				b
				100							GND					74HC165				50V		MC14489			50V	MC14489				50V								3	Vdd				c	5
				100					C11		GND					74HC165				50V		MC14489			50V	MC14489				50V								15	Vdd				c	4
				R35					C11								8					Vss		14		Vss	14											15	BANK3				d	4
				R35				4.7									8					Vss		14		Vss	14
500		J11		100				35V																														16	BANK4				e	2
		J11		100																																		17						1
		8																																				17	BANK5				f	1
													5V_B																									12	DATA IN			Vss		14		LED13			LED17		LED19		LED23
													5V_B															500										10	/ENABLE				g	20
				R36							500																	500										10	/ENABLE				g	20
											500																											11	CLOCK				h	19

				100												5V_B
				100												5V_B																						18	DATA OUT				Rx	8
				R37																																		18	DATA OUT				Rx	8
				R37																																				MC14489
				100																																										LED14					LED20
				R38							D1																																			LED14					LED20
											D1																																		50K1.
																																														R31
				100													14					Vdd	3			Vdd	3																			R31
				R39													14					Vdd	3			Vdd	3				9	X4	8
				R39						X2																					9		8
				100
				100				IN				OUT								C2		X6			C4	X8			C9
								IN				OUT					X4					X6				X8
L																	X4
L																HEXINV				0.1					0.1				0.1																	LED15					LED21
1								C8			GND					HEXINV				50V		MC14489			50V	MC14489			50V		3		4													500
1											GND									50V		MC14489			50V	MC14489			50V		3	X4	4													500
0138
								4.7														Vss				Vss
								4.7
								35V									7						14				14
								35V									7						14				14

X											500																500				500
X																											500				500

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.

LN-10

Image 95

Contents SVM154-A ISAFETYi Fumes and Gases SafetyIii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Installation Section InstallationGeneral Description Technical Specifications LN-10 Head & ControlRecommended Processes and Equipment Safety PrecautionsInstallation of the LN-10 Boom Mount Wire Feeder Components Mounting the 10 Series Wire DriveMounting the LN-10 Control Box Mounting Synergic 7F Wire Drive Unit K679-1 orConnecting Wire Drive Unit to Control Box Electrode Routing Wire Drive Speed Range SelectionControl Speed Range Setting Series Wire Drive Ratio SelectionSynergic 7F Wire Drive 4-Roll Kits KP655 and KP656 Wire Feed Drive Roll KitsProcedure to Install Drive Roll and Wire Guides Series Wire Drive Roll Kit Installation KP1505 and KP1507Innershield Guns GUN and Cable Assemblies with Standard ConnectionGUN and Cable Assemblies with FAST-MATE Connection Gmaw GunsBuildup of Shielding GAS may harm health or kill 8INSTALLATIONA-8Series Wire Drive Water Connections for Water Cooled Guns Cylinder may explode if damagedInput Cable LN-10 Control to Power Source Electrical InstallationMaterials Required for boom to bench conversion Optional Features InstallationBoom and Bench Conversions Materials Required for bench to boom conversionOperation Table of Contents Operation SectionSetup DIP Switch Access LN-10 Control DIP Switch SetupSetting the DIP Switches Wire Drive Head SelectionWelding Power Source Selection S2 switch 1 on = m/min Step Trigger Mode Operation SelectionSecurity Mode Selection Metric/English Wire Feed Speed Display SelectionS2 switch 4 OFF = Robotics mode OFF As shipped Maximum Limits Setting Mode SelectionS2 switch 4 on = Robotics mode on S2 switch 6 on Minimum Limits Setting mode onKeypad and Display Description Power-Down SaveProcedure Lights Indicate which Keypad and Display OperationTrigger Mode Selection Display Control Keys Digital Memory Voltmeter Control Control Select key enables operator toMaximum and Minimum Limits Setting Modes Wire Reel Loading READI-REELS Spools or Coils Dual Procedure RemoteFigure B.2 Making a Weld Procedure for Setting Angle of FeedplateGAS Guard Regulator Setting DH-10 Wire Reel ChangingWire Feed Overload Protection Grounding Lead ProtectorDisplay Prompt or Error Explanation of Prompting Error MessagesTable of Contents Accessories Section AccessoriesGeneral Table C.1 LN-10 Wire Feeder AccessoriesAluminum Electrode For use with Binzel Guns Only Wire Size Solid Steel ElectrodeCored Electrode Aluminum ElectrodeInput Cable Assemblies K683-1 Dual Procedure SwitchK683-3 Dual Procedure Switch K1449-1 Dual ProcedureK1561-1 Robotics Interface Module K1558-1 Remote Switch Interface ModuleGUN Adapters for 10 Series GUN and Cable AssembliesK1555-1 Insulated Lift Hook K1557-1 Swivel MountK1556-1 Light Duty Caster KIT Table of Contents Maintenance Section MaintenancePeriodic Maintenance MaintenanceAvoiding Wire Feeding Problems Safety Precautions Routine MaintenanceFigure D.1 Major Component Locations Theory of Operation Table of Contents Theory of Operation SectionControl Board Input RECEPTACLE, Control Board and Operator Controls Figure E.3 LN-10 Wire Feed Head and Receptacle Wire Feed Head ReceptacleTheory of Operation Protection and Shutdown Wire Feed Overload Loss of Voltage Sense Protection ShutdownLN-10 Table of Contents Troubleshooting and Repair Section Troubleshooting and RepairReturn to Return to Master TOC HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures LN-10 Function Problems Troubleshooting GuideFunction Problems Power Source Selection Function Problems Mode Selection Perform the Encoder Board Test Troubleshooting and Repair Mum and minimum limit set Perform the Gas Solenoid Test Feeding Problems Welding Problems LN-10 Materials Needed Test ProceduresWire Drive Motor Test Test DescriptionTest Procedure Wire Drive Motor TestMaterials Needed Tach Adjustment and Feedback TestTach Adjustment and Feedback Test 20TROUBLESHOOTING and REPAIRF-20Tach Adjustment Procedure LN-10 Keypad Resistance Test Keypad Resistance Test 24TROUBLESHOOTING and REPAIRF-24Control Ohms 50 Ohms Typical LN-10 Encoder PC Board Test Figure F.4 Encoder PC Board Test Encoder PC Board TestGAS Solenoid Test GAS Solenoid Test 30TROUBLESHOOTING and REPAIRF-30Display PC Board Removal and Replacement Component Replacement ProceduresReplacement Procedure 32TROUBLESHOOTING and REPAIRF-32Display PC Board Removal and Replacement Removal ProcedureGAS Solenoid Removal and Replacement GAS Solenoid Removal and Replacement 34TROUBLESHOOTING and REPAIRF-34Encoder PC Board Removal and Replacement Figure F.8 Encoder PC Board Removal and Replacement Encoder PC Board Removal and ReplacementWire Drive Motor and Gear BOX Removal and Replacement Figure F.9 Wire Feed Assembly Removal Wire Drive Motor and Gear BOX Removal and ReplacementTo Remove the Drive Motor from the Gear BOX To Remove the Wire Drive Assembly from the Gear BOXReplacement Procedures Current Sensing Reed Switch Removal and Replacement Current Sensing Reed Switch Plug Retest After Repair Check Wire Feed Speed RangeElectrical Diagrams Section Wiring Diagram LN-10 Control Electrical DiagramsElectrode Cable From Current Sensor Wiring Diagram LN-10 Wire DriveSchematic Control PC Board #1 Circuitry Tach Schematic Control PC Board #23168 G PC Board ASSEMBLY-CONTROL5VA Schematic Display PC BoardBoard 22066 Schematic Encoder PC BoardEncoder PC Board ASSEMBLY-ENCODERSVM Error Reporting Form

SVM154-A specifications

The Lincoln Electric SVM154-A is a powerful and versatile inverter-based welding machine designed for a wide range of applications. As a part of Lincoln Electric's esteemed portfolio, this model is particularly favored for its robust performance and cutting-edge technologies, making it ideal for both professional fabricators and hobbyists alike.

One of the standout features of the SVM154-A is its compact and lightweight design, which enhances portability without compromising power. Weighing significantly less than traditional welding machines, it allows welders to easily transport the equipment to various job sites. This feature is particularly beneficial in industries where mobility is essential.

Equipped with advanced inverter technology, the SVM154-A delivers a stable and smooth arc, providing consistent welding performance even in challenging conditions. The inverter design also contributes to energy efficiency, allowing users to save on operational costs while enjoying superior performance. The machine supports both MIG and TIG welding processes, which adds to its versatility. This adaptability makes it suitable for a range of materials including mild steel, stainless steel, and aluminum.

Another notable characteristic is its user-friendly interface. Designed with the welder in mind, the SVM154-A includes intuitive controls that simplify settings adjustments and operational processes. This ergonomic layout allows for ease of use, even for beginners, while still offering the adjustments that experienced welders appreciate for customizing their welds.

The SVM154-A also includes several safety features, such as thermal overload protection and a dynamic power control, ensuring safe operation while maintaining high productivity. Users benefit from features that protect both the machine and the operator, making it a reliable choice for long hours of work.

Moreover, Lincoln Electric's commitment to durability is evident in the SVM154-A's construction. Built with high-quality materials, this welding machine is designed to withstand the rigors of daily use, ensuring longevity and reliability over time.

In summary, the Lincoln Electric SVM154-A stands out for its portability, versatility, and user-centric design. With advanced inverter technology that promotes energy efficiency and a stability for various welding processes, it serves as a valuable tool for both professionals and hobbyists seeking to achieve high-quality welds across different applications. Its combination of advanced features, safety mechanisms, and rugged durability positions the SVM154-A as a top choice in the welding equipment market.