Lincoln Electric INVERTEC V250-S - Manual (Page 6)

INVERTEC V250-S
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MASTER TABLE OF CONTENTS FOR ALL SECTIONS
PAGE
INSTALLATION .......................................................................................................................SECTION A
TECHNICAL SPECIFICATIONS ..................................................................................................A-2
SAFETY PRECAUTIONS ............................................................................................................A-3
SELECT SUITABLE LOCATION..................................................................................................A-3
INPUT CONNECTIONS ...............................................................................................................A-3
INPUT VOLTAGE RECONNECT PROCEDURE.........................................................................A-4
OUTPUT CONNECTIONS ...........................................................................................................A-5
OPERATION .......................................................................................................................SECTION B
SAFETY INSTRUCTIONS ...........................................................................................................B-2
GENERAL DESCRIPTION...........................................................................................................B-2
CONTROLS AND SETTINGS......................................................................................................B-3
CONSTANT CURRENT PROCESSES........................................................................................B-4
PARALLEL OPERATION .............................................................................................................B-5
OVERLOAD PROTECTION.........................................................................................................B-5
THERMAL PROTECTION............................................................................................................B-5
ACCESSORIES .......................................................................................................................SECTION C
OPTIONS / ACCESSORIES ........................................................................................................C-2
CABLE PLUGS......................................................................................................................C-2
REMOTE CONTROLS ..........................................................................................................C-2
MAINTENANCE .......................................................................................................................SECTION D
INPUT FILTER CAPACITOR DISCHARGE PROCEDURE.........................................................D-2
ROUTINE MAINTENANCE..........................................................................................................D-3
FILTER CAPACITOR CONDITIONING ......................................................................................D-3
LOCATION OF MAINTENANCE COMPONENTS.......................................................................D-4
THEORY OF OPERATION .........................................................................................................SECTION E
GENERAL DESCRIPTION...........................................................................................................E-2
INPUT LINE VOLTAGE................................................................................................................E-2
PRE-CHARGE AND PROTECTION ............................................................................................E-3
MAIN TRANSFORMER................................................................................................................E-4
OUTPUT RECTIFICATION AND CONTROL...............................................................................E-5
PROTECTION CIRCUITS............................................................................................................E-6
INSULATED GATE BIPOLAR TRANSISTOR (IGBT) OPERATION............................................E-7
PULSE WIDTH MODULATION (PWM)........................................................................................E-8
TROUBLESHOOTING ................................................................................................................SECTION F
HOW TO USE TROUBLESHOOTING GUIDE ......................................................................F-2
PC BOARD TROUBLESHOOTING PROCEDURES.............................................................F-3
TROUBLESHOOTING GUIDE...............................................................................................F-4
TEST PROCEDURES..........................................................................................................F-11
REPAIR AND REPLACEMENT PROCEDURES.................................................................F-43
RETEST AFTER REPAIR....................................................................................................F-77
ELECTRICAL DIAGRAMS.........................................................................................................SECTION G
PARTS MANUAL ................................................................................................................................P-244
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