ABB C300 Operating Manual page 29

...7.3.1 Control Page (Heat/Cool Control)
INtGrL c
OFF
Int. Action
Time Off
Integral
Action
Time
MrSEt c
Set
50.0
dErIV
OFF
APPb
1.0
Mr–AdJ
YES
CrSOVr
50.0
t–bANd
10.0
OFFHYS
5.0
OFFSEt
0.0
Integral Action Time (Cool)
Set the required time between 1 and 7200 in 1 second
increments (0.1 and 120 minutes in 0.1 minute
increments).
OFF
Manual Reset (Cool)
This is only operable with Integral Action Time (Cool) set to
. Set the required proportional band offset between
OFF
0.0 and 100.0% of the display span in 0.1% increments.
Derivative Action Time
Set the required time between 0.0 and 999.9 in 0.1 second
increments (0.1 and 16.67 minutes in 0.01 minute
increments). The same derivative action time is used for
both heating and cooling.
is displayed in place of zero.
OFF
Approach Band
Set the required value between 0.1 and 3.0 in 0.1
increments.
(Set 1.0 initially.)
Manual Reset Adjust Enable
display and adjustment in the
Manual Reset
(see Section 5.2.) can be enabled or disabled.
Select to enable or no to disable.
YES
Crossover Output Value
Set the required crossover output value, between 0.0%
and 100.0% of P.I.D. output in 0.1% increments – see
Section 7.3.2.
Transition Bandwidth
Set the required value, between 0.0% and 100.0% of
P.I.D. output in 0.1% increments – see Section 7.3.3.
Output Off Hysteresis
The hysteresis is set to prevent oscillation of control
changes. Set the required value, ±25.0% (of P.I.D. output)
from the crossover output value, in 0.1% increments.
Control Algorithm Offset
The offset is only applicable if
Set the required offset either 0.0 or 50.0%.
Continued on next page.
7 CONTROL LEVEL...
is displayed in place of 7201 (120.1).
Integral Action Time
Operating Page
is set.
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