Duct static pressure control

During plant modes 1 to 6, the "SPA_StatPressControlNordic" will be released as soon as the input "FanEnableSig" becomes true (=1). The setpoint for the SPA_StatPressControlnordic is defined by the datapoint "DuctPressSp", while the proportional band and integral time respectively are defined by the parameters DSP-02 and DSP-03.

The next figure shows the internal control signal of the SPA_StatPressControlNordic in relation to its setpoint and proportional band.



The fan speed control signal will be limited between the minimum and maximum signals as defined by the parameters FSC-02 and FSC-03.


Description

Default value

DSP-01: setpoint increase/ decrease per minute

2500 Pa/min

DSP-02: P-band static pressure control

1000 Pa

DSP-03: I-time static pressure control

0 sec

FSC-02: minimum fan speed signal

0%

FSC-03: maximum fan speed signal

100 %