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Section 3
Theory of Operation
Abbott VP 2000™ Processor Service Manual
3-25
30-608308/R1—September 2008
Hardware-Software Interfaces
Stepper Motors (X-Direction and Rotation):
The stepper motors are controlled by a parallel output port
from the computer fed through some high-current drivers. To
make a stepper motor turn, its windings must be energized in
the correct order at the correct rate. This is all done in the
interrupt handler. The motors and direction to energize are
determined during the state and event part of the program.
AC Motor:
A 120 VAC reversible motor is used for the up/down direction
to get the required amount of torque and speed. This motor is
controlled by a parallel port from the computer fed to a 120
VAC triac.
Audible Feedback”
The “beeper” is a solid state device driven by a 5 VDC output
from the computer.
Dryer:
The dryer fan is controlled by another triac driven by an
output from the computer. The heater is controlled by varying
the frequency of a pulse generating IC which feeds a frequency
to voltage converter IC. The corresponding voltage is used as
part of a feedback loop, using the temperature sensor, to
control the duty cycle of the heater element.
Recirculation Pump:
The pump is turned ON by another triac fed from the
computer.
Содержание VP 2000 Processor
Страница 2: ...Introduction ii Abbott VP 2000 Procesor Service Manual 30 608308 R1 September 2008 NOTES ...
Страница 13: ...Abbott VP 2000 Processor Service Manual 1 1 30 608308 R1 September 2008 SECTION 1 ABOUT THIS MANUAL ...
Страница 14: ...About This Manual Section 1 1 2 Abbott VP 2000 Processor Service Manual 30 608308 R1 September 2008 NOTES ...
Страница 22: ...About This Manual Section 1 1 10 Abbott VP 2000 Processor Service Manual 30 608308 R1 September 2008 NOTES ...
Страница 23: ...Abbott VP 2000 Processor Service Manual 2 1 30 608308 R1 September 2008 SECTION 2 SAFETY Section 2 Safety ...
Страница 24: ...Safety Section 2 2 2 Abbott VP 2000 Processor Service Manual 30 608308 R1 September 2008 NOTES ...
Страница 38: ...Technical Data Section 3 3 2 Abbott VP 2000 Processor Service Manual 30 608308 R1 September 2008 NOTES ...
Страница 70: ...Installation Section 4 4 2 Abbott VP 2000 Proceessor Service Manual 30 608308 R1 September 2008 NOTES ...
Страница 97: ...Section 5 Purpose of This Section Abbott VP 2000 Processor Service Manual 5 7 30 608308 R1 September 2008 ...
Страница 144: ...Troubleshooting Section 6 6 2 Abbott VP 2000 Processor Service Manual 30 608308 R1 September 2008 NOTES ...
Страница 146: ...Troubleshooting Section 6 6 4 Abbott VP 2000 Processor Service Manual 30 608308 R1 September 2008 NOTES TOC ...
Страница 270: ...Shutdown Storage and Shipping Section 8 8 2 Abbott VP 2000 Processor Service Manual 30 608308 R1 September 2008 NOTES ...
Страница 280: ...Spare Parts and Accessories Section 9 9 2 Abbott VP 2000 Processor Service Manual 30 608308 R1 September 2008 NOTES ...
Страница 288: ...Spare Parts and Accessories Section 9 9 10 Abbott VP 2000 Processor Service Manual 30 608308 R1 September 2008 NOTES ...