Omron E5AN-H User Manual

201
Adjustment Level Section 5-4
If the heating characteristics and cooling characteristics of the control object
are very different and good control characteristics cannot be achieved with the
same PID constants, the cooling coefficient can be used to adjust the propor-
tional band (P) for the control output assigned to the cooling side.
• In heating/cooling control, the proportional band P for the cooling control
output is calculated using the following formula to set the cooling coeffi-
cient:
Cooling control output side P = Cooling coefficient × P (proportional band)
• When the Automatic Cooling Coefficient Adjustment parameter is set to
ON, the cooling coefficient is set automatically when AT is executed. If
there is strong non-linear gain for the cooling characteristics, however, it
may not be possible to obtain the optimum cooling coefficient at the Con-
troller.
• The set value is saved in the Cooling Coefficient parameter for the current
PID set.
■ Related Parameters
Proportional band (adjustment level): Page 200
Automatic cooling coefficient adjustment (advanced function setting level):
Page 271
PID * cooling coefficient (PID setting level): Page 219
This parameter sets the output dead band width for heating/cooling control. A
negative setting sets an overlapping band.
• This parameter sets an area in which the control output is 0 centering
around the set point for a heating/cooling control.
c-sc Cooling Coefficient
The control must be heating/cooling
control and 2-PID control.
Setting range Unit Default
0.01 to 99.99 None 1.00
Function
Setting
See
See
c-db Dead Band
The control system must be set to
heating/cooling control.
Model Setting range Unit Default
Temperature input −19999.9 to
3240.00
°C or °F0.0
Analog input −19.99 to 99.99 %FS 0.00
Function
Setting

Omron E5AN-H Specifications

General

Brand	Omron
Model	E5AN-H
Category	Temperature Controller
Language	English