7-17
Chapter 7. PARAMETER SETUP
Note 1)
On heat/cool models, this sets how the relationship between
heat-side output and cool-side output should be processed
with respect to the MV resulting from PID operation.
Note 2)
Constants
OL
and
OH
function as follows:
Note 3)
When MV ≥ 50 %, the heat-side PID set is switched to.
When MV < 50 %, the cool-side PID set is switched to.
Note 4)
PID set selection is carried out by setting value and external
switch.
Dead
zone
Output
(heat)
Output
(cool)
MV
100 %
50 %
0 %
100 %
Control output
values
Dead zone<0
Dead
zone
Output
(heat)
Output
(cool)
MV
100 %
50 %
0 %
100 %
Dead zone>0
Output
(heat)
Output
(cool)
MV
100 %
50 %
0 %
100 %
Dead zone=0
Heat-side
output
Cool-side
output
MV
100 %
50 %
0 %
100 %
Cool-side
OH
Heat-side
OL
Heat-side
OH
Cool-side
OL
