Operation Manual

Continuous valve actuator CHEOPS control
theben
As of: Jul-11 (Subject to change without notice) Page 26 of 71
3.4.5 Cooling control
Table 15
Designation
Values
Meaning
Setting of control parameters
Via type of system
User-defined
Standard application
Prof. application Self-
configure P/PI control
Type of system
Cooling ceiling
Fan Coil Unit
PI control with:
Integrated time = 90 minutes
Bandwidth = 4 k
Integrated time = 180 minutes
Bandwidth = 4 k
Transmission of actuating
value cooling
On change by 1%
On change by 2 %
On change by 3 %
On change by 5 %
On change by 7 %
On change by 10 %
On change by 15 %
After how many % change*
in the actuating value is the
new value to be sent.
Small values increase control
accuracy but also the bus
load.
Switch over between heating
and cooling
Automatically
via object
Cheops control automatically
switches to cooling mode
when the actual temperature
is above the threshold:
set point value + dead zone.
Cooling mode can be
activated only on the bus side
via Object 11 (1= cooling).
Cooling mode remains off for
as long as this object is reset
(=0).
User-defined parameters
Proportional band of cooling
controller
2 K, 2,5 K, 3 K
3,5 K, 4 K, 4,5 K
5 K, 5,5 K, 6 K
6.5 K, 7 K, 7.5 K
8 K, 8.5 K
Prof. setting to adapt the
Control behaviour to the
room.
Large values cause finer
changes to the actuating
values with the same control
deviation and a more precise
control than smaller values.