TAC 2112, Manual Functional Description
TAC AB, 1999-08-01 0-004-7459-3 (GB), 7:9(
22
)
The following data apply for the supply controller:
P band: 10–200
°
C
I time: 2 minutes
Dead zone: 1,0
°
C
The supply setpoint is set to
Min. supply temperature
(P 22) when the
pump is stopped in order to ensure that the valve moves into the
closed position.
Ramp limitation
To prevent increases in the supply temperature which are much too
rapid, the supply temperature can be ramp-limited. This means that
the setpoint is not allowed to increase as rapidly as possible, but
instead it is limited to an adjustable increase rate. This limitation
applies only when the setpoint increases. The setpoint can be reduced
without limitation.
Parameters
P No. Parameter Min. Max. Step Default Comments
P 03 Supply temperature 0 °C 120 °C 0,3 °C - Step=0,1 at 2–55 °C
P 04 Calc. setpoint, supply temp. 0 °C 120 °C 0,1 °C -
P 24 P band, supply controller 10 °C 200 °C 0,5 °C 100 °C
P 25 Run time for actuator 0 s 300 s 5 s 300 s
P 26 Max. increase rate, supply SP 1 °C/min 50 °C/m. 0,1 °C/m. 2 °C/min Ramp limitation
7.3.6 Room controller
A reference sensor can be connected in order to control the room
temperature more precisely. The reference sensor should measure the
room temperature in the most representative room in the building (see
also chapter 5). The signal from the reference sensor represents the
actual value to the room controller. The output signal from the
controller affects the setpoint for the supply temperature.
The controller may have various setpoints and control effects for day
and night.
The room controller has no effect if no reference sensor is fitted.
Controller
The room temperature is controlled by a P controller (proportional
controller). The setpoint for the controller is calculated on the basis of
the following parameters:
•
Commissioned setpoint for day or night
•
Remote setpoint control, SPC adjustment
The following data apply to the room controller:
Control effect: 0.5–20
Dead zone: 0–5
°
C
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