Omron E5GN User Manual

4.4Executing Heating and Cooling Control
E5GN
4–9
4.4 Executing Heating and Cooling Control
Heating and cooling control can be used on E5ANĆj3jjj controllers.
Heating and cooling control operates when  : heating and cooling" is
selected in the standard/heating and cooling" parameter. Select the stanĆ
dard heating control or cooling control according to the following table:
Setting Output
Control Method
Pirect/reverse
operation
Control output 1 Control output 2
standard control Reverse operation Control output (heat) -
standard control Direct operation Control output (cool) -
Heating and cooling
control
Reverse operation Control output (heat) Control output (cool)
Heating and cooling
control
Direct operation Control output (cool) Control output (heat)
(The parameter default is heating control (standard).)
Ă• When heating and cooling control is selected, the dead band" and coolĆ
ing coefficient" parameters can be used.
The dead band is set with the set point as its center on the E5ANĆj3jj.
The dead band width is the set value of the dead band" parameter (adjustĆ
ment level). Setting a negative value produces an overlap band.
Default is 0.0 EU."
Output
Heating side
Dead band:
dead band width = positive
Cooling side
Set point
Output
Heating side Cooling side
Overlap band:
dead band width = negative
Set point
PV PV
00
If the heating and cooling characteristics of the control target greatly difĆ
fer, preventing satisfactory control characteristics from being obtained by
the same PID constants, adjust the proportional band (P) at the cooling
side using the cooling coefficient to balance control between the heating
and cooling sides. In heating and cooling control, P at the heating or coolĆ
ing side is calculated by the following formula:
Heating side P = P
Cooling side P = Pcooling coefficient
The cooling coefficient is applied to control output 1 side P to obtain conĆ
trol whose characteristics (control output 2 side P) differ from those on the
control output 1 side.
JHeating and
cooling control
F Dead band
F Cooling
coefficient

Omron E5GN Specifications

General

Brand	Omron
Model	E5GN
Category	Temperature Controller
Language	English