Title: 36 Siemens GDB181-MO.pdf.pdf
4.3 Demand-controlled ventilation (DCV)In combination with a suitable supervisory room controller, an AHU control optimization algorithm can be run using the actual value of the damper position feedback signal.The control of variable speed drives (VSDs) can be accomplished by various means. Below depicted is DC 0...10 V control, but plants with USS- or Modbus- controlled VSDs are also possible, depending on the connector layout of the universal / primary controller.Legend:BusFieldbus (Modbus, BACnet, KNX etc.)N1Room unit with temp. sensorN2VAV Compact Controllers (supply / extract air)N3Universal / primary controllerN4Variable Speed Drives (VSD)15 / 40VAV Compact Controller Modbus RTUA6V10631862_en--_d 2019-09-13Mounting and mounting limitationsEnvironmental conditionsManual controlMechanical limitation of angular rotationConfiguration and maintenance interface16 / 40Siemens Smart InfrastructureElectrical and mechanical installation