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Adjustment Level Section 5-4
If the heating/cooling characteristics of the control target greatly differ, pre-
venting satisfactory control characteristics from being obtained by the same
PID parameters, adjust the proportional 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/cooling control, control output 2 side P is calculated by the follow-
ing formula to set the cooling coefficient:
Control output 2 side P = Cooling coefficient
× P (proportional band)
■ Related parameters
“Proportional band” (adjustment level)
This parameter sets the output dead band width in a heating/cooling control
system. A negative 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/cooling control system.
Note Set “none” as the unit for Controllers with Analog Inputs.
Cooling coefficient
The control must be either heating/
cooling control and 2-PID control.
Setting Range
Unit Default
0.01 to 99.99 None 1.00
Function
Setting
See
Dead band
The control system must be heating/
cooling control.
Setting Range
Unit Default
−199.9 to 999.9 EU 0.0
Function
Setting
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