Omron ZN-A Series - How Feedback Control Works

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Section 3 BASIC KNOWLEDGE OF CLEAN SENSING SYSTEMS
ZN
System Manual
Section 3
Feedback Control
How Feedback Control Works
The following describes the "flow of data for feedback" and "measurement processing
flow" during feedback control for each system configuration.
■ Direct Clean Sensing System
• Flow of data for feedback
In a system configured as shown above:
(1) The amount of particles in area 1 is detected by the Sensor, and the measurement
result is calculated by the Amplifier Unit.
(2) The control air volume level value of area 1 is calculated based on the
measurement results, preset target values and various feedback parameters, and
is sent to the Air Clean Unit.
(3) The air volume level is altered according to the controlled air volume level value
that arrives from the Air Particle Sensor.
(1)
(
(2)
(3)
Air Clean Unit
Air Particle Sensor
Control signal
Area 1
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