Cooling-Side Proportional Band Coefficient - FE PXR4 Operation Manual

Cooling-side proportional band coefficient (Option: Available for DUAL output only) (Setting range: 0.0 to 100.0)
[Description]
• This parameter is used for setting the cooling-side pro-
portional band. (See the figure below.)
Heating side
Heating-side
proportional
band
Proportional band (P)
• Before setting the cooling-side proportional band, set the
heating-side proportional band to an optimum value. To
select the two-position control for the cooling side, set
to 0.0.
Cooling-side
proportional band
Ex) When making the proportional band of 10% of the
full scale with the proportional band (P) being 50%:
10% =
Consequently, the coefficient is 0.4.
[Setting example] Changing the cooling-side proportional band coefficient from 1.0 to 2.5
Display
1.
2.
3.
4.
5.
6.
1.800.561.8187
28
Output
Cooling side
Coefficient: 0.5
Coefficient: 1.0
Coefficient: 2.0
MV
50
Cooling-side
proportional
band
Proportional band (P)
× Coefficient
=
2
50%
× Coefficient
2
Press and hold the SEL key for three seconds.
will be displayed on the PV display.
Press the key to display
Press the SEL key once.
The current setting ( ) flashes on the SV display.
Press the or keys to display
Press the key once.
SEL
controller will operate with the cooling-side proportional band coefficient being 2.5.
If you want to display the operation status, press and hold the
www.
• When is set to 0.0 and
output type, the cooling output is as shown in the figure
below. The hysteresis is fixed at 0.5%FS.
Heating output (Output 1)
ON 0.5%
OFF
Related parameters:
Operating procedure
.
.
will stop flashing and will be registered for
.com
is set to 0.0 in the dual
Cooling output (Output 2)
0.5% ON
OFF
HYS DB
SV
(page 27)
(page 24)
(page 29)
. After that, the
key for two seconds.
SEL
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PV