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Section | TABLE OF CONTENTS | Section | |
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| Theory of Operation | Section E | |
| General Description | ||
| Battery, Engine, Rotor, Stator and Engine Protection | ||
| Engine Idle System | ||
| Generating Power | ||
| Weld Power and Control | ||
| Remote Output Control, Output Contactor, Digital Meters | ||
| Chopper Technology Fundamentals | ||
| Pulse Width Modulation | ||
| Insulated Gate Bipolar Transistor (IGBT) Operation |
FIGURE E.1 – RANGER 305D BLOCK LOGIC DIAGRAM
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12V.
BATTERY
GLOW
PLUG
BUTTON
RUN
STOP
SWITCH
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| SHUNT | + |
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POWER | IGBTs | CHOKE |
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MODULE |
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ENGINE |
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| CHARGING |
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PROTECTION |
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LIGHT |
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| SYSTEM LIGHT |
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| (CODE 10926 ONLY) |
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ENGINE | ENGINE | GLOW | ENGINE |
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PROTECTION | WELD | |||
CIRCUIT | SENSORS | PLUGS | ALTERNATOR | |
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| WINDING |
PUMP | ENGINE |
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| ROTOR |
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FUEL |
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FUEL |
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SOLENIOD |
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HOLD COIL |
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PULL COIL |
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| STATOR |
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START | STARTER |
| EXCITER |
| 42 VAC | WELD CONTROL | AMP | ||||
IDLE | 120/240 VAC | DISPLAY | |||||||||
BUTTON | WINDING AUX.WINDING | WINDING |
| P.C. BOARD | VOLT | ||||||
| SOLENOID |
| 240 | CURRENT |
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| DISPLAY | |||
| PULL | HOLD |
| SENSOR | 14 | 6 |
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| COIL | COIL | FLASHING | VAC | 120 |
| PIN |
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| PULL COIL |
| RECEPTACLES vac |
| AMPHENALS | PIN |
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| PC BOARD |
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| IDLE |
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| OUTPUT | MODE | WELDING | |
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| SWITCH | |||
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| CONTROL | SWITCH TERMINAL |
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| ARC |
| SWITCH |
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| CONTROL |
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