4.10
78
The Inverter blocks of the PC1600 is where the stored energy in the buss supply (DC power) is converted
to AC and supplied on to the output bridge. Two half bridge inverters are used (allows 230/460 switching)
and the output from them is combined at the secondary of the main transformers (T1-A and T1-B).
Components used: 2- twin IGBT transistors, Q101 and Q102
4-Electrolytic Capacitors, C37, C40, C44 and C47
2- Main transformers T1-A and T1-B
The Filter Buss capacitors receive power from either the pre-charge of the inrush circuit or from the main
contactor K1. (See the inrush circuit for more detail) Once the bus is fully charged, each of the four filter
caps will have a nominal voltage of 162 VDC across it’s terminals. The filter caps then reduce the ripple
on the rectified voltage and supply the filtered bus voltage to the IGBT circuits. Each IGBT circuit (or half-
bridge) will have a nominal buss voltage of 325 VDC, whether configured for 230 VAC input or 460 VAC
input.
4.10.16
Power Board_PCB2 Filter Buss/
IgbT Circuit (0558038315)
Capacitor Information
Serious Shock Possible
SECTION 4
DESCRIPTION Of OPERATION
The “buss capacitors” in the PC1600 will maintain a volt-
age charge for approximately 2 minutes after power is
removed from the input of the machine.
The arcing caused by discharging a capacitor into a short-
circuit can cause injury and component damage
To eliminate the voltage from the capacitor, connect the
“bleeder resistor” across the poles of a charged capacitor
and the stored energy will discharge harmlessly through
the resistor. The approximate discharge time is 30 sec-
onds.
When discharged, the cap can be partially tested by using a multimeter set to the ohms scale.
When checking a good capacitor…Connect the + meter lead to the + pole of the capacitor, and
the – lead to the – pole. The meter display will show a number that will change while the leads
are connected, if the meter leads are reversed, the display will change polarity and the value will
change in the opposite direction from the first test.
Summary of Contents for PowerCut 1600
Page 16: ...3 0 16 section 3 SPECIFICATIONS 3 4 Machine Operation Flowchart...
Page 27: ...4 2 27 4 2 Control Transformer T2 0558007188 SECTION 4 DESCRIPTION OF OPERATION...
Page 30: ...4 3 30 4 3 Input Bridge 0558007068 0558007077 SECTION 4 DESCRIPTION OF OPERATION...
Page 35: ...4 6 35 blank...
Page 38: ...4 8 38 4 8 PCB1 Control Board 0558038317 SECTION 4 DESCRIPTION OF OPERATION 4 10 6 8 5 3 11 7...
Page 52: ...4 8 52 4 8 14 PCB1 Layout 0558038317 SECTION 4 DESCRIPTION OF OPERATION...
Page 60: ...4 10 60 4 10 2 Power PC Board Schematic 2 0558038315 SECTION 4 DESCRIPTION OF OPERATION 3 14 8...
Page 67: ...4 10 67 4 10 7 Power Board_PCB2 Control Relays 0558038315 SECTION 4 DESCRIPTION OF OPERATION...
Page 77: ...4 10 77 4 10 16 Buss Supply IGBT SECTION 4 DESCRIPTION OF OPERATION...
Page 91: ...4 11 91 4 11 Power Driver 0558038335 SECTION 4 DESCRIPTION OF OPERATION...
Page 109: ...4 19 109 SECTION 4 DESCRIPTION OF OPERATION 4 19 PT38 Plasma Torch...
Page 110: ...4 19 110 SECTION 4 DESCRIPTION OF OPERATION 4 19 PT38 Plasma Torch...
Page 113: ...5 0 113 5 1 Wiring Diagram 230 460 Volt 0558007543 section 5 WIring diagrams...
Page 114: ...5 0 114 5 1 Wiring Diagram 230 460 Volt 0558007543 section 5 WIring diagrams...
Page 115: ...5 0 115 5 1 Wiring Diagram 230 460 Volt 0558007543 section 5 WIring diagrams...
Page 116: ...5 0 116 section 5 WIring diagrams 5 1 Wiring Diagram 230 460 Volt 0558007543...
Page 117: ...5 0 117 section 5 WIring diagrams 5 1 Wiring Diagram 230 460 Volt 0558007543...
Page 118: ...5 0 118 5 2 Wiring Diagram 400 400V CE 0558007547 section 5 WIring diagrams...
Page 119: ...5 0 119 section 5 WIring diagrams 5 2 Wiring Diagram 400 400V CE 0558007547...
Page 120: ...5 0 120 5 2 Wiring Diagram 400 400V CE 0558007547 section 5 WIring diagrams...
Page 121: ...5 0 121 section 5 WIring diagrams 5 2 Wiring Diagram 400 400V CE 0558007547...
Page 122: ...5 0 122 5 2 Wiring Diagram 400 400V CE 0558007547 section 5 WIring diagrams...
Page 123: ...5 0 123 section 5 WIring diagrams 5 2 Wiring Diagram 400 400V CE 0558007547...
Page 124: ...124 5 3 Wiring Diagram 575V 0558007545 section 5 WIring diagrams...
Page 125: ...125 section 5 WIring diagrams 5 3 Wiring Diagram 575V 0558007545...
Page 126: ...126 5 3 Wiring Diagram 575V 0558007545 section 5 WIring diagrams...
Page 127: ...127 section 5 WIring diagrams 5 3 Wiring Diagram 575V 0558007545...
Page 128: ...128 5 3 Wiring Diagram 575V 0558007545 section 5 WIring diagrams...
Page 129: ...129 section 5 WIring diagrams 5 3 Wiring Diagram 575V 0558007545...
Page 130: ...130 blank...
Page 135: ...6 0 blank 135...
Page 136: ...6 0 136 section 6 replacement parts 6 3 Front 0558007540...
Page 140: ...6 0 140 6 3 Top 0558007540 section 6 replacement parts...
Page 144: ...6 0 144 section 6 replacement parts 6 3 Left Inside2 0558007540...
Page 146: ...6 0 146 section 6 replacement parts 6 3 Rear View 0558007540...
Page 148: ...6 0 148 6 3 Front Rear Isometric Views 0558007540 section 6 replacement parts...
Page 159: ...159 section 7 mechanized conversion 20 Trim all tie wraps and replace the unit s cover...
Page 166: ...10 166 SECTION 9 General information 10 3 Ohm s and Watt s Laws...
Page 171: ...10 171 10 6 Ohm Testing SECTION 9 General information...
Page 172: ...10 172 10 7 Diode Testing SECTION 9 General information...
Page 173: ...10 173 10 8 Ripple SECTION 9 General information...
Page 174: ...10 174 10 9 Voltage Measurement SECTION 9 General information...
Page 178: ...10 178 IGBT Tester Schematic 10 10 1 IGBT Testing SECTION 8 General information...
Page 182: ...182 revision history Original release 11 2008 1...
