Watlow CLS200 User Manual
Page 143
CLS200 Series User’s Guide
Chapter 6: Enhanced Features
Doc.# 0600-3050-2000
Watlow Anafaze
127
Figure 6.8 Application Using Ratio Control
To set up this application, you would do the following:
1.
Adjust and tune loop 1 (H
2
O) for optimal performance
before implementing the ratio setup.
2.
Switch the controller to display loop 2 (KOH), and
then enter the three-key sequence (
ENTER, then ALARM
ACK, then CHNG SP ) and go to the first screen in
Table 6.3.
3.
Follow the steps in Table 6.3 to configure ratio control.
CLS200
Loop 1 PID Output
Loop 2 PID Output
Loop 1 Input
Process Variable
Loop 2 Input
Process Variable
Motorized Control Valve 2
Motorized
Control
Valve 1
Mixture Output
Water Input
KOH Input
Flow
Transducer
Loop 1: Water Flow Control Loop
Loop 2: KOH Flow Control Loop
Serial
DAC
Serial
DAC