Settings - Omron E5CN-HT User Manual

Executing Heating/Cooling Control
Output
P for control output
assigned to heating side
0
P for control output assigned to
heating side
Automatic Cooling
Coefficient Adjustment
Note
4-4-2

Settings

Setting Heating/Cooling Control
Operating Procedure
Initial Setting Level
Standard or
s-hc
Heating/
Cooling
stnd
Setting the Cooling Coefficient
Operating Procedure
PID Setting Level
Display PID
d.pid
selection
1
The cooling coefficient is multiplied by the P for the control output assigned to
the heating side to obtain control with characteristics that differ from those of
the control output assigned to the heating side.
A cooling coefficient can be set for each PID set. To set the cooling coefficient,
select the PID set number in the Display PID Selection parameter (PID setting
level) and then set the Cooling Coefficient parameter. If the Cooling Coeffi-
cient parameter setting is changed in the adjustment level, the change will be
reflected in the Cooling Coefficient parameter for the current PID set.
P for control output
assigned to heat-
ing side 1.0
P for control output
assigned to cooling side
PV
Set point
0.8
By executing AT during heating/cooling control, the cooling coefficient can be
automatically calculated along with the PID parameters.
Parameter name
Automatic Cooling Coef-
ficient Adjustment
If there is strong non-linear gain for the cooling characteristics, such as when
cooling water boils for cooling control, it may not be possible to obtain the opti-
mum cooling coefficient at the Controller, and control may take the form of
oscillating waves. If that occurs, increase the proportional band or the cooling
coefficient to improve control.
To set heating/cooling control, set the Standard or Heating/Cooling, Dead
Band, and Cooling Coefficient parameters.
Standard or heating/cooling = Heating/cooling
1. Press the O Key for at least three seconds to move from the operation
level to the initial setting level.
2. Select "heating/cooling control" in the initial setting level.
stnd: Standard control
h-c:
Heating/cooling control
PID 1 Cooling Coefficient = 10
1. Press the O Key three times to move from the operation level to the PID
setting level. The current PID set number will be displayed. Use the U or
D Key to select 1.
Output
P for control output
assigned to heat-
ing side 1.0
P for control output
assigned to heating side
0
P for control output assigned to
heating side 1.5
Setting rage
OFF: Disabled, ON: Enabled
Section 4-4
P for control output
assigned to cooling side
PV
Default
OFF
103