Thunder Scientific 2500 series, Руководство по эксплуатации и обслуживанию

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1.4 COMPUTER CONTROL SYSTEM
1.4.1 General Description
Reference Drawings 91D25903 & 91D25913
The Computer Control System (figure 1-2), consisting of several STD bus plug-in circuit
board modules, is embedded in the humidity generator. The computer controls all aspects of
the humidity generation process (i.e., controlling temperatures, pressures, etc.) as well as
performing all human interface functions of keypad input and information display. The
computer also controls printer operation and interfaces with an external computer (optional)
for bi-directional RS-232C communications.
The Computer Control System is considered a "single point automation" unit, controlling the
functions of the humidity generator to bring it to any one operator input setpoint. The
computer will always control the system at the most current setpoint that has been input,
either via keypad input, or from external computer input thru the RS-232C port. The
Computer Control System knows nothing of past or future setpoints, requiring the use of an
external computer if automated temperature / humidity profiling is desired.
The Computer Control System consists of the following key components:
1) STD bus computer system, consisting of:
a) CPU card with 64180 processor (STD-CPU)
b) 8 channel, 15 bit A/D converter board (STD-A/D)
c) Memory board (STD-MEM)
d) Liquid crystal display driver board (STD-LCD)
e) Power supply converter board (STD-PS)
2) 256 x 128, backlit, dot matrix Liquid Crystal Display (LCD) module.
3) 16 key front panel keypad.
STD BUS
STD-PS STD-LCD
STD-CPU
STD-A/D STD-MEM
LCD-INV
LCD
SSRB
TIB
ATB
KB
CONSOLE
PORT
PRINTER
PORT
POWER SUPPLY BOARD DISPLAY DRIVER BOARD
ANALOG BOARD
MEMORY BOARD
ANALOG TERMINAL
BOARD
KEYBOARD
SOLID STATE
RELAY BOARD
TERMINAL INTERFACE
BOARD
INVERTER BOARD
LIQUID CRYSTAL
DISPLAY
ATB
KB
CONSOLE
PORT
PRINTER
PORT
ANALOG TERMINAL
BOARD
KEYBOARD
Figure 1-2