Omron E5AR - MANUAL 2 User Manual page 218

CH
Cooling coefficient
When there is a large difference in the heating and cooling characteristics of the object and satisfactory
control is not possible using the same PID constants, the heating P (proportional band) is multiplied by a
coefficient for use in cooling control.
Function
Setting
Reference
Reference
CH
Dead band
This sets an output dead band for heating/cooling control. A negative value can also be set to create an
overlap band.
Function
Setting
CH
Manual reset value
Function
Setting
Reference
Reference
c-sc
The cooling P in heating/cooling control is obtained and the coefficient
is set using the following equation.
Cooling P = Cooling coefficient
Setting range
0.01 to 99.99
● Related information
"3.2 Heating/cooling control of a chemical reaction device" (P.3-5)
● Related setting data
"PID Proportional band" (PID setting level) (P.8-31)
c-db
Set an area centered on the SP where the control amount is 0 during
heating/cooling control.
Setting range
-19.99 to 99.99
of-r
Advanced PID control (Proportional band 0.00), Integral time = 0
• This is used to set an MV for rectification during P and PD control to
eliminate the offset.
• This setting only appears when Proportional band
Integral time = 0.
Setting range
0.0 to 100.0
● Related setting data
"PID Proportional band", "PID Integral time ", (PID setting level)
(P.8-31)
8.4 Adjustment level (l.adj)
Heating/cooling control, Advanced PID control
(Proportional band
P (heating proportional band)
Units
None
Heating/cooling control
Units
%FS
Units
%
l.adj
0.00)
Default value
1.00
l.adj
Default value
0.00
l.adj
0.00 and
Default value
50.0
8-15