Lincoln Electric SVM149-A service manual Input Voltage Board

Page 84

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G-2

WIRING DIAGRAM - PRO-CUT 25

ELECTRICAL DIAGRAMS

G-2

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	VAC		SW1
	INPUT 115/230/1/50/60	L1	SW1
		L1	A
			A
		300uH
			B

RL3		RL2
R1		RL2
10/10W		RL2
10/10W	F1
1A/250V	F1	RL2
		RL2

C26

	AC	AC
	CP	CP	CP
	CP	CP	CP
	CP	CP
	AC	AC

R1

CP

R2

15K/3W 15K/3W

1500uF/250V

+

C1a,b

+

C2a,b

Q1a,b,c	D10	Lout	BS1
IRG4BC30W	D10	Lout	BS1	WRK
		240uH	8A
			8A
T2	SEC		+12VDC TRANSFER
PRI	SEC
C12	D11		RL1	NZL (2)
C12

C14

WORK CLAMP

V1

RL2

RL1

R24

Q2a,b,c6.8k/5W IRG4BC30W

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FN1	230VAC	V2
		V2

115VAC

L1

T1

230V

RL1

1500uF/250V

	SHUNT		EL (3)
C13	SH-	SH+

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NO

COM

NC

Purge Switch

115V

L1

Input

Voltage Board

12VDC

Air

Solenoid

1

CN1	15VAC				CN2													CN3
1	15VAC				9													1
2	15VAC				10													2
3	SAFETY				5													3
4	+28VDC				6													4
5	SEC GND				3													Main Inverter Board
6	OVLOAD				22													Main Inverter Board
7	115/230				2
8	+12VDC				20										CN1
					15 16 12 18 14 1										CN1			4
					15 16 12 18 14 1			11 4		13 7		19 24 21 23 8		17	1	2	3	4
	PS2	PS1	SEC GND OVLOAD	SAFETY	V+ EV1 +15Vrms	+12VDC	+8V SW +12VDC SW	SEC GND	OVLOAD	TRANSFER SW	TRANSFER	SOL 1 DRIVER	V OUT OUTPUT TRIGGER SOL 2 DRIVER		POT WIPER	POT CW	POT CCW
CN1	8	6	17 9	3	1	2	18 14 7		15 4		11 5		16 10 12 13		23 22 24
CN1

Display LED's

Output Control

Control Board

PT

12VDC Solenoid 2

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine.

PRO-CUT 25

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Contents PRO-CUT Safety Cylinder may explode if damaged Safety Précautions DE SûretéMaster Table of Contents for ALL Sections PRO-CUT Table of Contents Installation SectionInstallation Technical Specifications PRO-CUT 25 K1756-1Safety Precautions Electric Shock can Kill Select Proper LocationHigh Frequency Interference Protection Input Electrical ConnectionsGAS Input Connections Output Connections TorchPRO-CUT Table of Contents Operation Section Safety Precautions Preheat Temperature for Plasma CuttingOperation DescriptionOperational Features and Controls Design Features AdvantagesUser Responsibility Cutting Capability Consumable LifeControls and Settings LimitationsApparently wrong, reset the machine by turning Pilot ARC DiscussionProcedure Recommendations General In All CasesPRO-CUT Accessories General Options Accessories Maintenance Routine Maintenance Electric Shock can killPRO CUT PRO-CUT Table of Contents Theory of Operation Section Theory of Operation General DescriptionInput Line VOLTAGE, and Auxiliary Transformer Precharge and Protection Figure E.3 Precharge and ProtectionMain Transformer Return Return to Section TOCFigure E.5 Plasma Output Section and Torch Control Board Figure E.6 Control BoardSafety PARTS-IN-PLACE Protection Protection CircuitsAccidental Operation Protection Insulated Gate Bipolar Transistor Igbt Operation Table of Contents Troubleshooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures Output Problems Function Problems See the Operation section Troubleshooting & Repair LED Function Problems Input Filter Capacitor Discharge Procedure DescriptionDischarge Procedure Right Side of MachineMain Inverter Board Resistance Test Right Side of Machine IGBT’s D2 D1 D11 D10 PRO-CUT Input Board Voltage Test Test Points Fan PRO-CUT Main Inverter Board Voltage Test P2 P1 P2 P1 PRO-CUT Torch Continuity and Solenoid Test Torch Continuity and Solenoid Test Torch Continuity and Solenoid Test PRO-CUT AIR/GAS Solenoid Test AIR/GAS Solenoid Test Control Board Removal and Replacement Small Red Cap Screws Over tighten Input Board Removal and Replacement Input Board Input Board Removal & Replacement PRO-CUT Main Inverter Board Removal and Replacement Main Board Main Inverter Board Removal & Replacement PRO-CUT Switch Removal and Replacement PRO FAN Removal and Replacement Fan Do Not Over tighten Retest After Repair Machine Input and OutputElectrical Diagrams Table of Contents Electrical Diagrams SectionInput Voltage Board Pressure SCHEMATIC- Control Printed Circuit Board Sheet Electrical Diagrams Electrical Diagrams PC Board Assembly Main Inverter Board PC Board Assembly Input Board Cutting Current Path SVM Error Reporting Form