Advantech ADAM-5000/TCP Series, Руководство пользователя

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Chapter 2
Selecting Your Hardware Components
2-1 Selecting I/O Module
To organize an ADAM-5000/TCP Series data acquisition & control
system, you need to select I/O modules to interface the main unit with
field de- vices or processes that you have previously determined. There
are sev- eral things should be considered when you select the I/O
modules. What type of I/O signal is applied in your system? How much
I/O is required to your system? How will you place the main unit for
concentrate the I/O points of an entire process.
How many ADAM-5000/TCP Series main units are required for
distributed I/O points arrangement.
What is the required voltage range for each I/O module? What
isolation environment is required for each I/O module? What are
the noise and distance limitations for each I/O module? Refer to
table 2-1 I/O as module selection guidelines
Choose this type of For these types of field devices Explanation:
I/O module: or operations (examples):
Discrete input module Selector switches, pushbuttons, Input modules sense ON/OFF or
and block I/O module photoelectric eyes, limit switches, circuit OPENED/CLOSED signals. Discrete
Discrete output module
and block I/O module
breakers, proximity switches, level
switches, motor starter contacts, relay
contacts, thumbwheel switches
Alarms, control relays, fans, lights, horns,
valves, motor starters, solenoids
signals can be either ac or dc.
Output module signals interface
with ON/OFF or OPENED/CLOSED
devices. Discrete signals can be
either ac or dc.
Analog input module Thermocouple signals, RTD signals,
temperature transducers, pressure
transducers, load cell transducers,
humidity transducers, flow transducers,
potentiometers.
Analog output module Analog valves, actuators, chart recorders,
electric motor drives, analog meters
Convert continuous analog signals
into input values for ADAM-
5000/TCP
Interpret ADAM-5000/TCP Series
output to analog signals (generally
through transducers) for field
devices.
Table 2-1: I/O Selection Guidelines
2-2 ADAM-5000/TCP User’s Manual