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 % |