Omron E5GN User Manual page 82

Cooling coefficient
If the heating and cooling characteristics of the control target greatly differ, preventing satisfac
tory control characteristics from being obtained by the same PID parameters, adjust the propor
tional band (P) at the control output 2 side by adding the cooling coefficient to balance control
between the control output 1 and control output 2 sides.
In heating and cooling control, control output 2 side P is calculated by the following
formula to set the cooling coefficient:
Control output 2 side P = Cooling coefficient  P (proportional bounds)
Function
Setting Range
0.01 to 99.99
F Related parameter
Proportional band" (adjustment level) (p. 5 14)
See
Dead band
This parameter sets the output dead band width in a heating and cooling control system. A nega
tive setting sets an overlap band.
• This parameter sets an area in which the control output is 0" centering around the
set point in a heating and cooling control system.
• The decimal point setting follows the currently set sensor. During analog input, the
Function
decimal point setting follows the decimal point position" setting.
Setting Range
-199.9 to 999.9
Adjustment Level
The control must be either heating and cool-
ing control and 2-PID control.
Unit Default
None 1.00
The control system must be heating and cool-
ing control.
Unit Default
EU 0.0
5–15