SRD2-TH-220.103 Wall-mounted programmable indoor controller and transmitter (X2 OS) with temperature and humidity sensor with optional CO2, VOC air quality, dust particle sensor, color display, IR sensor and communication

The SRD2 is a programmable controller and transmitter with communication capabilities. Each control loop may use 2 PI sequences and 2 binary stages. The SRD2 comes with a built-in isolated RS485 communication interface that allows peer-to-peer communication with an operation terminal such as OPT1-(2TH)-VC. An optional built-in color display and touch buttons provides a perfect and flexible way to interact with the user.

Communication supports BACnet or Modbus. There is also a Wi-Fi communication option available which supports Modbus TCP and BACnet/IP. An embedded webserver provides a web interface to access the controller in order to change the connection settings and to operate the controller.

Complete parameter sets may be copied by use of an accessory called AEC-PM2 or exchanged with a PC and the EasySet program using an RS485-USB converter or via Wi-Fi.

The SRD2 uses the Vector Controls universal and flexible X2 operating system and is preconfigured as described in the manual.

Applications

• Ventilation control 
• Temperature control 
• Air humidifier and dehumidifier
• CO2 air quality control 
• VOC air quality control 
• Dust particle air quality control
• Motion detection action

Type Overview (see ordering for details)

Features Specifications:

• Two universally configurable control loops: 
  • Functions for dehumidifying, set point shift and cascade control 
  • Multiple auxiliary functions: heat-cool auto changeover, automatic enable, set point compensation 
  • Free heating and cooling with economizer function based on enthalpy or temperature 
  • Differential, averaging, min and max functions, enthalpy and dew point calculations 
  • Transmitter function for sensors and set points 
• Measures:
  • Temperature
  • Humidity
  • CO2
  • VOC air quality
  • Dust particles (PM1.0, PM2.5, PM10) 
• A passive infrared sensor (-IR type) which can be used for motion detection (occupied / unoccupied)
• Color display with backlight and touch button operation (-OP type)
• Built-in humidity and temperature sensor (-TH type), CO2 sensor (-C type), VOC sensor (-Q type), dust particle sensor (-D type) 
• 3 analogue voltage outputs (VDC) and one relay with a normally open and a normally closed contact (SPDT) 
• 8 freely assigned alarm conditions, selectable state of outputs and sounds on alarm condition 
• Serial Modbus RTU/ASCII or BACnet MS/TP via isolated RS485 
• Modbus TCP or BACnet/IP via Wi-Fi 
• Webserver for SRD2 operation from computer / mobile device or via “EasyX2” desktop/mobile app 
• Password protected programmable user and control parameters 
• EasySet access over TCP/IP for configuration (Wi-Fi interface required)