Omron E5AR - MANUAL 2 User Manual

Section 3 Typical Control Examples
3-18
Typical Control
Examples
3.5 Ratio control of dyeing machines
Ratio control is used to maintain a constant proportional relationship between two or more variables.
■ Application
This machine mixes a constant proportion of flowing sand and dye in
order to dye the sand a uniform color.
Settings are shown when 4 to 20 mA is used in the input from the dye
flow sensor, 4 to 20 mA is used in the input from the sand weight
measurement sensor, and a pump is used that is driven by an inverter
with a 4 to 20 mA input is used in the manipulation system.
Control of the proportion of gas to air is also carried out in
firing control in gas kilns.
With the goal of preventing pollution and saving energy,
the proportion of gas to air is strictly controlled to prevent
incomplete combustion and improve combustion effi-
ciency.
IN1
PV
+
-
SP
Channel 1
PID*
MV
OUT1
IN2
×
AP1
SUB1 SUB2 SUB3 SUB4 HA U-SUB
PV
SV
MV
OUT1 OUT2 OUT3 OUT4 STOP RSP
8
8.8.8.8.8
8.8.8.8.8
8.8.8.8
A/M
PF1 PF2/CH
E5AR
4 - 20 mA
Ratio control that maintains a constant weight ratio between sand and dye
4 - 20 mA
4 - 20 mA
Flow meter
Dye
Color liquid
Sand
P
Sand weight meter
Hint

Omron E5AR - MANUAL 2 Specifications

General

Brand	Omron
Model	E5AR - MANUAL 2
Category	Controller
Language	English