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SVM105-B
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V300-PRO
NOTES
F-16 F-16
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Contents
Main
INVERTEC V300-PRO
SVM105-B
SERVICE MANUAL
April, 2007
Safety Depends on You
WARNING
ELECTRIC AND MAGNETIC FIELDS may be dangerous
ARC RAYS can burn.
ii
ELECTRIC SHOCK can kill.
AUG 06
FUMES AND GASES can be dangerous.
FOR ELECTRICALLY powered equipment.
Mar 95
CYLINDER may explode if damaged.
WELDING SPARKS can cause fire or explosion.
PRCAUTIONS DE SRET
iv
PRCAUTIONS DE SRET POUR LES MACHINES SOUDER TRANSFORMATEUR ET REDRESSEUR
Mar. 93
iv
MASTER TABLE OF CONTENTS FOR ALL SECTIONS
Page
A-2
TECHNICAL SPECIFICATIONS - V300-PRO (K1349-3, K1349-4)
PHYSICAL DIMENSIONS
INPUT
RATED OUTPUT
OUTPUT
DO NOT ATTEMPT TO POWER THIS UNIT FROM THE AUXILIARY POWER SUPPLY OF AN ENGINE WELDER.
PRODUCT DESCRIPTION
ELECTRIC SHOCK
LOCATION
ELECTRICAL INSTALLATION
POWER INPUT CONNECTION
CONNECTION OF WIRE FEEDERS TO THE INVERTEC
GENERAL INSTRUCTIONS FOR CONNEC- TION OF WIRE FEEDERS TO INVERTEC
K900-1 DC TIG STARTER CONNECTION
PARALLEL OPERATION
OUTPUT CABLES
reverse 25mm & 1in
QUICK DISCONNECT PLUGS (K852-7)
Page
OPERATING INSTRUCTIONS
DUTY CYCLE
OFF
CONTROL FUNCTION / OPERATION
REMOTE
GMAW
FCAW
SMAW CRISP SMAW SOFT GTAW
METER POLARITY SWITCH
AUXILIARY POWER
-+
OUTPUT TERMINALS
Page
ACCESSORIES
OPTIONS / ACCESSORIES
Page
INPUT FILTER CAPACITOR DISCHARGE PROCEDURE
OVERLOAD PROTECTION
THERMAL PROTECTION
PC BOARD REPLACEMENT
PREVENTIVE MAINTENANCE
Page
- THEORY OF OPERATION SECTION -
FIGURE E.1 V300-PRO BLOCK LOGIC DIAGRAM
INPUT LINE VOLTAGE & AUXILIARY TRANSFORMER
PRECHARGE & PROTECTION CIRCUITS
SWITCH BOARDS
OUTPUT AND CONTROL CIRCUITS
B. ACTIVE
A. PASSIVE
MAXIMUM OUTPUT
MINIMUM OUTPUT
PULSE WIDTH MODULATION
V300-PRO
THERMAL PROTECTION
PROTECTIVE CIRCUITS
OVERLOAD PROTECTION
- TROUBLESHOOTING & REPAIR SECTION -
HOW TO USE TROUBLESHOOTING GUIDE
PC BOARD TROUBLESHOOTING PROCEDURES
ADDITIONAL INFORMATION OSCILLOSCOPE WARNING
Page
Page
Page
Page
Page
Page
Page
INPUT FILTER CAPACITOR DISCHARGE PROCEDURE
INPUT FILTER CAPACITOR DISCHARGE PROCEDURE (cont.)
OUTPUT PILOT CIRCUIT TEST
OUTPUT PILOT CIRCUIT TEST(cont.)
OUTPUT PILOT CIRCUIT TEST (cont.)
Page
PROTECTION BOARD OUTPUT TEST
Page
PROTECTION
L7915
306
313
J8 J15
275F 311
Page
CAPACITOR BALANCE TEST
STATIC CAPACITOR TEST
CAPACITOR BALANCE TEST (cont.)
TEST PROCEDURE:
DYNAMIC CAPACITOR TEST
TEST PROCEDURE:
Page
Page
SWITCH BOARD TEST
V300-IPRO
SWITCH BOARD TEST (cont.)
SWITCH BOARD TEST (CONT.)
SWITCH BOARD RESISTANCE CHECKS
SWITCH BOARD TEST (CONT.)
SWITCH BOARD RESISTANCE CHECKS
SNUBBER RESISTOR TEST
SNUBBER RESISTOR TEST (cont.)
9RW12WR 401/ 403 1/
404
5402/
84/
OUTPUT DIODE TEST
OUTPUT DIODE TEST (cont.)
-+
Page
INPUT RECTIFIER TEST
TABLEF.5
OVERCURRENT PROTECTION CURRENT TRIGGER TEST
Page
OVERCURRENT PROTECTION CURRENT TRIGGER TEST (cont.)
CONTROL 1J3 (Black)
2J3 (White)
OVERVOLTAGE PROTECTION DC TRIGGER CIRCUIT TEST
Page
Page
501 313 311
309 310
504
F-42 F-42
FIG. F.19 - OVERVOLTAGE PROTECTION DC TRIGGER CIRCUIT
THERMAL PROTECTION AC TRIGGER CIRCUIT
Page
THERMAL PROTECTION AC TRIGGER CIRCUIT (cont.)
Page
POWER BOARD TEST
Page
POWER BOARD J6
501 313 311
J7 J14
211A 275D
305
504
SIMPLIFIED TRIGGER CIRCUIT
STT II Only
CAPACITOR REMOVALAND REPLACEMENT PROCEDURE
PROCEDURE
Page
Page
SWITCH BOARD REMOVALAND REPLACEMENT PROCEDURE
PROCEDURE
SWITCH BOARD REPLACEMENT (cont.)
TEST AFTER SWITCH BOARD OR CAPACITOR REPLACEMENT
B300-PRO
TEST AFTER SWITCH BOARD OR CAPACITOR REPLACEMENT (cont.)
OUTPUT DIODE REPLACEMENT PROCEDURE
DESCRIPTION
PROCEDURE (Paralleled IndividualDiodes)
OUTPUT DIODE REPLACEMENT PROCEDURE (cont.)
PROCEDURE (Diode Modules)
OUTPUT DIODE REPLACEMENT PROCEDURE (cont.)
RETEST AFTER REPAIR
- ELECTRICAL DIAGRAMS SECTION -
Page
ELECTRICAL DIAGRAMS
WIRING DIAGRAM - ENTIRE MACHINE CODE 9934 (L8841)
PROTECTION
(LEFT)
-
ELECTRICAL DIAGRAMS
WIRING DIAGRAM - ENTIRE MACHINE CODE 10034 (L9299)
PROTECTION
{
ELECTRICAL SYMBOLS PER E1537
ELECTRICAL DIAGRAMS
WIRING DIAGRAM - ENTIRE MACHINE CODE 10035 (L9301)
PROTECTION
(LEFT)
-
Page
Page
Page
Page
ELECTRICAL DIAGRAMS
SCHEMATIC - ENTIRE MACHINE
G-10
Page
ELECTRICAL DIAGRAMS
PC BOARD ASSEMBLY- DRIVER - (L8660-[])
G-12
Page
Page
Page
ELECTRICAL DIAGRAMS
PC BOARD ASSEMBLY- SWITCH - (L8441)
G-16
Item Description
Page
ELECTRICAL DIAGRAMS
PC BOARD ASSEMBLY- SWITCH - (L10958-1)
L10958-1
SWITCH
8.50
Page
Page
ELECTRICAL DIAGRAMS
G-21
Page
ELECTRICAL DIAGRAMS
PC BOARD ASSEMBLY- PROTECTION - (L7915-2)
G-23
Page
ELECTRICAL DIAGRAMS
PC BOARD ASSEMBLY- POWER - (L8033-7)
G-25