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THEORY OF OPERATION
FIGURE E.2 – INPUT LINE VOLTAGE
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| WORK |
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| NOZZLE |
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| POWER BOARD |
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| ELECTRODE |
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| MAIN |
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| TORCH |
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| CR 1 |
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| TRANSFORMER | OUTPUT BOARD |
| CONNECTOR |
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| RELAY |
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INPUT |
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| IGBT |
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LINE | INPUT |
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SWITCH | RECTIFIER |
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| T |
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| R |
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| CAPACITOR |
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| CHOKE | E |
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| E | IGBT |
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| PILOT |
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| TRANSISTOR |
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| C | IGBT |
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| T |
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| CURRENT |
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| TRANSFORMER |
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| TRIGGER & SAFETY | ||
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| I | CAPACITOR |
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| AIR |
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| SOLENOID |
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| IGBT |
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| AIR | P |
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| TRIGGER & SAFETY |
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| PRESSURE | O |
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| SWITCH | T | CR 1 | IGBT |
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| "A" | E | RELAY |
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| C | DRIVE | GATE |
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| T | SIGNALS |
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| SIGNAL |
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| ELECTRODE & TRANSFER |
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| CURRENT FEEDBACK |
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| E | N | SIGNAL |
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| PILOT ENABLE |
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| A |
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| CONTROL BOARD | ELECTRODE SOLENOID ENABLE |
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| AIR SOLENOID ENABLE |
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| 18/36VAC |
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| R | A | T | S |
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| E | I | H | A |
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| THERMOSTATS | R | E | F |
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| L | R | E |
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| D | M | T |
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| Y | O | A | Y |
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FAN |
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| W | L |
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| OUTPUT |
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MOTORS |
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| CONTROL |
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| DISPLAY BOARD |
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| 12VAC |
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| 24VAC |
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AUXILIARY
TRANSFORMER
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GENERAL DESCRIPTION
The
INPUT LINE VOLTAGE,
CONTACTOR AND MAIN
TRANSFORMER
The
A reconnect panel and voltage range switch allow the user to configure the machine for either a low or high input voltage and also connect the auxiliary trans- former for the appropriate input voltage.
The auxiliary transformer develops the appropriate AC voltages to operate the cooling fans, the control board and the plasma output board.
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NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion.