Title: 36 Siemens GDB181-MO.pdf.pdf
A6V10631862_en--_d 2019-09-13Constant air volume control (CAV)Position controlCalculation of Vn (Dpn = nominal pressure)Min. and max. valuesActual value as function of setpoint and min. / max. limitsActual value as function of differential pressureDifferential pressure as function of actual value20 / 40Siemens Smart InfrastructureThe VAV Compact Controllers can be operated in CAV mode by setting the setpoint value accordingly, i.e. setting the supervisory controller to send a constant setpoint.VAV Compact Controllers can also be operated as damper actuators, i.e. the 0...100% setpoint is interpreted as position setpoint, cf. section 10.2.6.6.1.2 Calculation formulasThe parameters are based on the following formulas:Vn =300 ΔpnPa Pa