Climate Controller With BACnet MS/TP Communication DIN Rail

In stock (2 items available)
  • Weight
    0.3 kg
  • SKU
    SXS-174

Multistage BACnet MS/TP fan coil unit, chilled ceiling and zone heating controller. 4 analogue 0..10V outputs, 2 digital outputs, 2 digital outputs, 2 0-10Vdc inputs, one for temperature and one for external CO2 measurement

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The SRC-212-BAC BACnet MS/TP series controllers have been designed for fan coil unit, chilled ceiling, VAV and zone heating/cooling applications. The controllers are DIN-rail mounted. The controllers have 4 analogue 0..10Vdc outputs and two digital outputs that can be configured for heating and cooling control, or fan speed control. The controllers can operate as Proportional Only or as Proportional + Integral Controllers. The controllers have built-in BACnet MS/TP communication for connection to BMS systems, and support both device and point discovery.

The SRC-212 BACnet MS/TP controllers have two 0-10Vdc inputs for the measurements. Input RI1 is used to measure temperature (0..10V = 0..50°C). Input RI2 is connected to an external CO2 sensor (0..10V = 0..2,000ppm). The SRC-212 Modbus Controllers are typically used with e.g. Duct CO2 and Temperature Sensors to control the room environment based on the extract air conditions.

The controller can have up to 2 heating and cooling stages. The analogue outputs can be individually configured for any of the heating/cooling stages or fan speed, and digital outputs can be configured as 3-point, PWM (thermic) or On/Off control. Furthermore the controller supports pulsed 0-10Vdc outputs.

The SRC-210 BACnet controllers include both 3-speed and EC fan control. The fan speed can follow any of the heating or cooling stage demand. It is possible to set both minimum and maximum fan speed.

The two digital inputs on the controller can be used for overriding the controller to day or night, or to disable cooling (chilled ceiling applications). Digital inputs can also be set as a BACnet monitoring point.

The controller follows the CEN TC247 standard for day and night control. Two options for the night control are available: Night Off with Frost Protection, or Relaxed Setpoint (enlarged deadband). The controllers are overridden to night/day modes via digital inputs or over the BACnet MS/TP network from BACnet Client device.

The controller configuration parameters are adjusted thrrough the SW-DCT-USB tool

  • Configurable Room and Zone Controllers with DIN-rail Mounting
  • Up to 2 Heating and up to 2 Cooling stages
  • Both 3-Speed and EC Fan Control
  • Chilled Ceiling and Zone Heating Application Support
  • BACnet MS/TP Communication, Device Discovery
  • Address and Baud Rate Setting via Bit switch or via the Configuration Software
  • Digital Inputs used with PIRs, Windows Switches, Door Cards etc.
  • BACnet MS/TP Communication, Device Discovery
  • Configuration is done via SW-DCT-USB Windows based configuration tool
  • Plug-In Wiring Terminals
  • Power Supply: 24Vac/dc 
  • Outputs: 4 Analogue 0..10Vdc Outputs Configurable to Any of the Stages
  • Outputs: 2 Digital 24Vac Triac Outputs; Configurable for On/Off, PWM (Thermic) and 3-Point Control
  • Inputs: 0-10Vdc Input for temperature e.g. Duct Temperature Sensor with 0-10V output
  • Inputs: 0-10Vdc Input for CO2 measurement e.g. Duct CO2 Sensor (range 0..2,000ppm)
  • Inputs: 2 Digital Inputs for Night Mode, Day Mode or Cooling Disable Overrides
  • Temperature: 0°C...+50°C (32..122°F)
  • Humidity: 0...95%rh (non-cond.)
  • Standards CE: Conformity CE Directive 2004/108/EY EN61000-6-3: 2001 (Generic Emission) EN61000-6-1: 2001 (Generic Immunity)
  • Degree of Protection: IP20
  • Housing: ABS Plastics, Self Extinguishing
  • Dimensions: W86 x H120 x D29mm

Faulty Goods and Warranty

Where such goods have been supplied we undertake to repair or replace them as quickly as possible.Prior to returning faulty items, please contact us with a description of the fault as one of our engineers might be able to assist you by resolving the issue over the phone.
A Warranty form must be filled out and returned with any goods.

Our standard warranty period is 12 months from the date of purchase unless stated otherwise.

Other warranty periods:

Labjack Products: 5 Years
Atop Products: 3 Years
MeanWell Products: 3 Years
Terracom Products: 3 Years

Warranty is subject to us being satisfied that a defect was caused by defective workmanship or materials and was not caused by or was not substantially contributed to by other factors beyond our control including incorrect installation, alterations or modifications of the product not recommended by the manufacturer.

Returns Policy

If you are dissatisfied with our goods you may return them within 14 days of the dispatch date. Contact us for an authorisation and we will refund your purchase less shipping costs and restocking fees. All returned goods MUST be in AS NEW condition including ALL PACKAGING and DOCUMENTATION / MANUALS etc.

Please note:

  • The product returned will attract a 20% restocking fee.
  • The customer must pay the delivery costs.
  • Non standard, custom made or a specially manufactured or imported products are not returnable.
  • Semiconductors, books and software are not refundable

Full Terms and Conditions

By placing an order with Ocean Controls, you agree to be bound by our Terms and Conditions of Trade.

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