30
5.9.1
Control Page (Standard Control)
Page Header – Control Page
Cycle Time (only applicable for control using relay output)
This setting can be ignored for analog control outputs.
Set the required cycle time for time proportioning control, from 1.0 to 300.0 in
0.1 second increments (300 seconds = 5 minutes).
Hysteresis (only applicable for control using relay output)
This setting can be ignored for analogue control outputs.
The hysteresis is operational above or below (depending on the control action,
direct or reverse) the set point and is only applicable for ON/OFF control – see
Fig. 5.14
on page 26.
Set the hysteresis value required for on/off control in engineering units
(between 0 and 10% of engineering range span).
Proportional Band
Set the proportional band value required, between 0.1 and 999.9% in 0.1%
increments.
Integral Action Time
Set the required time between 1 and 7200 in 1 second increments (7200
seconds = 120 minutes). '
OFF
' is selected above 7200 or below 1.
Manual Reset
Set the required proportional band offset on the lower display, between 0.0 and
100.0% of the engineering range span in 0.1% increments.
Derivative Action Time
Set the required time between 0.1 and 999.9 in 0.1 second increments (999.9
seconds = 16.67 minutes). '
OFF
' is selected below 0.1.
Approach Band
Set the required value between 0.1 and 3.0 in 0.1 increments. (Set 1.0 initially).
PAGE
CYCt
HYSt
INtGrL
dErIV
OFF
CONtrL
MrESEt
1.0
PAGE
0
APPb
PrOP
___._
___._
_._
OFF
Time Proportioning
Control
only
ContrL
1
7200
0.0
100.0
0.1
3.0
OFF
OFF
0.1
999.9
OFF
300.0
1.0
Integral Off
Integral
On
Derivative
Off
…5 CONTROL OPERATION
Summary of Contents for COMMANDER 1911
Page 42: ...40 NOTES ...
