D8 Series User’s Guide
Chapter 6: Menu and Parameter Reference
129
Cascade High Set Point
l
01 Cascade hi
r
SP
b
25 ˚C
Enter the set point to use for the current loop when the output of primary loop is at its maximum
value. The set point will never exceed this value.
• If the primary loop has only the heat output enabled, or has the heat and cool outputs
enabled, this value is the set point when the output of the primary loop is 100 percent.
• If the primary loop has only the cool output enabled, then this value is the set point when the
output of the primary loop is 0 percent.
Values:
For a thermocouple or RTD input, any value within the input range (see Table 6.7 – Input
Types and Ranges on page 107). For a process input, any value between the
Input range low
and
Input range high
parameters. This value must be greater than the
Cascade low SP
parameter.
Default:
25 for a thermocouple, RTD or process input.
Decimal Placement for DeviceNe
t™: See Decimal Placement for Numeric Values on page 46.
DeviceNet™ Object:
Cascade (6A hex)
Ratio Menu
l
01 Ratio
r
Other menus
b
Use the ratio menu to configure ratio control, differential control or remote analog set point. Use
these control methods to calculate the set point of the current loop (the ratio loop) based upon the
process variable of another loop (the master loop).
For more information about ratio control, see Setting Up Ratio Control on page 82, Setting Up
Differential Control on page 84, and Setting Up Remote Analog Set Point on page 85.
Ratio Master Loop
l
01 Ratio
r
Other menus
b
Choose the master loop. The controller uses the process variable of the master loop to calculate the
set point of the current loop.
Values:
none
(0), or loop 1 to 4 (1 to 4) for a four-loop controller or 1 to 8 (1 to 8) for an eight-loop
controller. You cannot choose the current loop.
