
Theory of Operation
CADJET 2
2-13
3.11 Stepper Motor
The media is driven by a Stepper Motor which drives the media in a
direction perpendicular to the length of the plotter. The media in the
plotter can advance forward and backward, depending upon the
commands which the Stepper Motor receives from the microprocessor.
The Stepper Motor drive contains two identical circuits, one for each
winding of the stepper motor. The circuit is a combination of two
simpler types of circuits and can be thought of as a variation of either
one.
The first is a switching power supply, but in this case the current rather
than the voltage is regulated. Instead of output capacitors to filter
voltage ripple, output inductance in the form of the motor winding filters
current ripple. The other type of circuit is a bipolar chopper drive which
is commonly used for driving stepper and servo motors.
In both cases, the circuit has the additional feature that the reference
varies with time so that a waveform is generated rather than a steady
state signal.
Содержание CADJET 2
Страница 5: ...CADJET 2 v PRINTING HISTORY 1st Edition September 18 1995...
Страница 37: ...General Information CADJET 2 1 11 Figure Chapter 1 1 Front View Cover Closed...
Страница 38: ...General Information 1 12 CADJET 2 Figure Chapter 1 2 Front View Cover Open...
Страница 116: ...Troubleshooting 4 30 CADJET 2 Figure Chapter 4 3 Parallel and Serial Loop Back Tests...
Страница 139: ...Troubleshooting CADJET 2 4 53 Figure Chapter 4 7 Black Cartridge Flex Dimple Pattern...
Страница 158: ...Disassembly Assembly CADJET 2 5 5 Figure Chapter 5 1 CADJET 2 Hardware Kit Assembly...
Страница 159: ...Disassembly Assembly 5 6 CADJET 2 Figure Chapter 5 2 CADJET 2 Final Assembly Tools...
Страница 161: ...Disassembly Assembly 5 8 CADJET 2 Figure Chapter 5 3 Preparing the Plotter for Shipping...
Страница 167: ...Disassembly Assembly 5 14 CADJET 2 and pull straight out At this point all 6 connectors should be disconnected...
Страница 168: ...Disassembly Assembly CADJET 2 5 15 Figure Chapter 5 6 MPCB Connectors...
Страница 173: ...Disassembly Assembly 5 20 CADJET 2 Figure Chapter 5 9 Side View of SIMM Removal...
Страница 178: ...Disassembly Assembly CADJET 2 5 25 Figure Chapter 5 12 Compression of Frame Tensioner...
Страница 186: ...Disassembly Assembly CADJET 2 5 33 Figure Chapter 5 16 Inside View of Left Side Plate...
Страница 192: ...Disassembly Assembly CADJET 2 5 39 Figure Chapter 5 19 Reinstalling the Trailing Cable in J1 Connector...
Страница 199: ...Disassembly Assembly 5 46 CADJET 2 Figure Chapter 5 20 Positioning the Trailing Cable on the Stabilizer Bracket...
Страница 211: ...Disassembly Assembly 5 58 CADJET 2 Figure Chapter 5 25 Disassembly of Plotter Prior to Removing the Inner Platen Parts...
Страница 213: ...Disassembly Assembly 5 60 CADJET 2 Figure Chapter 5 26 Removing the Lower Drive Shaft Screws...
Страница 217: ...Disassembly Assembly 5 64 CADJET 2 Figure Chapter 5 28 Lower Drive Assembly and Stepper Motor Assembly...
Страница 223: ...Disassembly Assembly 5 70 CADJET 2 Figure Chapter 5 29 Routing of Wires and Cables on Right Side Plate and MPCB...
Страница 228: ...Disassembly Assembly CADJET 2 5 75 Figure Chapter 5 31 Cutter Assembly...
Страница 253: ...Calibration 6 10 CADJET 2 Figure Chapter 6 2 Inner Stand Off Screws and Turnbuckle...
Страница 257: ...Calibration 6 14 CADJET 2 Figure Chapter 6 3 Carriage Height Measurement Fixture...
Страница 258: ...Calibration CADJET 2 6 15 Figure Chapter 6 4 Installation of Typical Black Cartridge...
Страница 268: ...Calibration CADJET 2 6 25 Table Chapter 6 2 Potentiometer Adjustment Flowchart...
Страница 275: ...Calibration 6 32 CADJET 2 Figure Chapter 6 7 Correct Positioning of the Spring in the Upper Roller Support...
Страница 337: ...Replacement Parts List CADJET 2 7 29 Figure Chapter 7 52 Slide Shaft P N 204007 31...
Страница 347: ...Appendix A CADJET 2 A 3 Figure Appendix A 1 Cable RS422 Mini DIN8 P N 203977...
Страница 355: ...Appendix C CADJET 2 C 6 Figure Appendix C 1 CADJET 2 D Size Final Assembly Drawing...
Страница 356: ...Appendix C CADJET 2 C 7 Figure Appendix C 2 CADJET 2 E Size Final Assembly Drawing...