Tuttnauer 1730EK, Техническое руководство

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C 1
D S
B Z 1
9 7 - 0 5
C 2
2
D IG
1
C 1
J P 1
D 1
R P
U 1
R P
U 7
U 8
C 1
C 2
C 3
C 4
8
1
J P 3
R 4
J P
C 1
U 3
Q 1
R 1
+
R 2
U 4
U 1
U 1
U 2
U 6
R 1
2 0
1 9
R 8
R 7 R 6 R 5
R 3
U 1
C 1
6
Y 1
C 1
R 9
U 5
U 1
U 1
U 1
3 7
1
S K
T
U 1
U 1
U 1
C 1
7
R 1
C 2
1
U 2
1
C 9
C 8
C 7
C 6
C 5
C 1
1
U 1
5
+
+
R 1
C 2
C 1
C 1
3 4
3 3
C 2
C 2
U 2
C 2
U 2
H 2
— The board contains an optimal Real Time Clock (U12), which serves
as a clock to the system, including a back-up battery, which ensures
the clock, runs continuously even when the autoclave is not
powered.
This component is optimal because it is related to the operation of
the printer, which is also an optional item.
— The board contains a watchdog, which detects any faulty situation in
the running program code. It performs an automatic reset of the
micro-controller and stops all the commands to avoid an
uncontrolled activation of any of the heating elements or the valves.
— The board functions as an MMI (Man-Machine Interface). It is
connected to a LCD display of two rows with 16 characters on each
row and to the following light indicators:
— START (autoclave in process),
— FAIL (the process failed),
— WATER (no water in the reservoir),
— DOOR (the door is not closed).
A keyboard connected to the digital board, serves as a control panel
containing the command and programming keys.
— The digital inputs and outputs are transferred to the system, as
follows:
— Through the digital board to the analog board by means of buffers
74HC377.
— RS232 interface is performed on the board by the U13 component,
the signal is transmitted to the communication connector located on
the ANL-T2 board.
— The printer is connected directly to this board, connector DS1
enables to connect the DPU-20 printer manufactured by SEIKO.
The printer receives the data and the supply voltage directly from
this connector.
The layout of the DIG-T2 board components is provided below
DIG- T2 BOARD