Title: 36 Siemens GDB181-MO.pdf.pdf
Building automation systems using Modbus RTU (third-party integration and freely programmable devices)Application fields:Supply air controlExtract air controlSupply/extract cascade control with– Ratio control 1:1 – Ratio control (positive/negative pressure) – Differential control (positive/negative pressure)Air dampers with a nominal torque of up to 5 or 10 NmVAV Compact Controllers are not suitable for environments where the air is saturated with sticky or fatty particles or contain aggressive substances.4.2 Application examplesVAV Compact Controllers with Modbus communication can be used for any supply and extract air control application, and be used in demand-controlled ventilation (DCV) systems when using a connection to the air-handling unit (AHU) control. The examples focus on the communication part of the applications. Other devices such as electrical heaters with connection independent of the Modbus configuration may not be shown.