SAUTER flexotron®400 - RDT410
Configuration
P100012103
30
Menus X.4
P-band
Here you set the P-band (Proportional band). The P-band is the control offset
necessary to drive an output signal from 0 to 100%. In configurations involving
two outputs the same P-band applies to both outputs.
In controlmode 3, Cascade control this setting will set the P-band for the supply
air controller. The P-band for the room controller is set by the cascade factor, see
menu X.6 below.
Menus X.5
I-time
Here you set the Integration time (Reset time). Menu X.5 is not shown if 3-point
control has been selected in menu X.1.
Menus X.6
Damper minimum position (Control modes 1, 2 and 3)
P-band room temperature influence (control mode 3)
0°C temperature boost (Control mode 4)
D-factor (control mode 5)
Damper minimum position
If you in menu X.2 have configured output AO2 to be a damper, alternative 6 or
7, you can set a minimum value to the damper signal. The damper output will
then not go lower than the set value during normal operation. On shut-down
however the signal will go to zero and fully close the damper.
P-band room temperature influence
For control mode 3 there is a second 3.6 menu page where you set the room
temperature influence P-band PCd. In cascade control an offset in room/extract
air temperature will displace the supply air controller’s setpoint so as to eliminate
the offset. PCd sets the amplification on the corrective signal from the room
controller.
Definition of P-band the room temperature influence (PCd): The change in room
temperature which results in a change in the supply air setpoint, corresponding to
the difference in temperature between the set maximum and minimum limits.
