YOKOGAWA YewSeries 80, Руководство пользователя

Страница: 21 / 66

4-1
IM 01B04K02-02E
Principles of Operation
1
2
3
App
1
2
3
5
6
7
8
4
4.1 Principle of Operation
Input signals are converted to digital data by the A/D conversion circuit. The resulting digital
data is processed by the microcomputer, and the alarm relay is then energized/de-energized
by alarm calculation processing (comparison, etc.).
F0401.ai
SET
N
L
GND
Input
processing
circuit 1
Multiplexer
A/D
conversion
circuit
Micro-
processor
Relay
output 1
Relay
output 2
(*2)
Handy
Terminal
*1: SALD-xx4 only
*2: SALD-724 only
Power
supply circuit
Display setter (*1)
Power
supply
1
7
A
B
J
F
H
K
2
Figure 4-1 Hardware Function Block Diagram
Chapter 4 Principles of Operation