26
7.3.1
Control Page (Heat/Cool Control)
The following parameters appear only if Heat/Cool is selected at
Control Mode
frame in the
Set
Up Control Page
.
Page Header – Control Page (Heat/Cool Control).
Cycle Time (Heat)
This frame appears only if
Time Proportioning Control
is
selected in the
Set Up Control Page
. Set the required cycle
time between 1.0 and 300 in 0.1 second increments. For
Heat/Cool Control,
'ON/OFF' mode must not be selected.
Cycle Time (Cool)
This frame appears only when the
Second Output Type
in the
Set Up Control Page
is time proportioning. Set the required
cycle time between 1.0 and 300 in 0.1 second increments.
Proportional Band (Heat)
Set the proportional band value required, between 0.1 and
999.9% in 0.1% increments.
Time Units
The time units for the integral and derivative action times
(see below) can be set to minutes
MINS
or seconds
SECS
.
Integral Action Time (Heat)
Set the required time between 1 and 7200 in 1 second
increments (0.1 and 120 minutes in 0.1 minute
increments).
OFF
is displayed in place of 7201 (120.1).
Manual Reset (Heat)
This is only operable with Integral Action Time (Heat) set to
OFF
. Set the required proportional band offset between
0.0 and 100.0% of the display span in 0.1% increments.
Proportional Band (Cool)
Set the proportional band value required, between 0.1 and
999.9% in 0.1% increments.
Continued on next page.
…7
CONTROL LEVEL
CYCLE h
5.0
OFF
t–untS
SECS
ProP h
100.0
50.0
Integral
Action
Time
Set
Int. Action
Time Off
CYCLE c
5.0
ProP c
100.0
INtGrL h
MrSEt h
2nd O/P
=
C–PrOP
ContrL
PAGE
Time Proportioning
2nd O/P
=
t–PrOP
Current
Proportioning
