Watlow 8LS Controller - Manual (Page 129)

Appendix C: 8LS Cascade
8LS User’s Guide 121
Appendix C: 8LS Cascade
Introduction
The Cascade control feature allows the output percentage of one control
loop to be used as the setpoint of a second control loop. The loop
providing the output is called the Master or Primary loop. The loop that
is using the output is called the Slave or Secondary loop.
In Watlow Anafaze multiloop controllers, the Master loop output can
supply more than one secondary setpoint loop with a cascade setpoint.
The cascade control provides an adjustable range of the Secondary
setpoint on a per loop basis.
The 0% level of the Primary loop control ouput sets the low end of the
Secondary setpoint. The 100% level of the Primary loop control output
sets the high end of the Secondary setpoint.
Selection of Cascade control is done on a per loop basis.
8LS Cascade Menus
Cascade Main Menu
The following is the cascade main menu. It appears after the Setup
Outputs main manu.
Pres Yes if you wish to edit Cascade parameters. If you press No, the
Setup Alarms main menu appears.
1 2 3 4 5 6 7 8
LOOP PROCESS UNITS
ALARM SETPOINT STATUS OUTPUT%
1 SETUP
CASCADE