ECL-600 Series

ECL-600 Series

The ECL-600 Series controllers are microprocessor-based programmable controllers designed to control various building automation applications such as air handling units, chillers, boilers, pumps, cooling towers, and central plant applications. This series supports up to two ECx-400 Series I/O extension modules.

ECL-600 Series

LONMARK® Certified Programmable Controllers and I/O Extension Modules

These controllers use the LonTalk® communication protocol and are LONMARK certified as a Static Programmable Device, guaranteeing compatibility and interoperability with other manufacturers’ LONMARK certified controllers.

These controllers meet the requirements of the following applications:

  • Central Plant
  • Air Handling Units
  • Multi-Zone Applications
  • Chillers
  • Boilers
  • Cooling Towers
  • Roof Top Units
  • Power Measurement

Universal Inputs and Outputs

This controller has various software configurable universal inputs and software configurable universal outputs, and covers all medium to large-size industry-standard HVAC applications. This series supports up to two ECx-400 Series I/ O extension modules that operate off of a separate sub-bus, giving this controller a total of up to 40 universal inputs and 36 universal outputs.

HOA Switches & Potentiometers

Certain models have the convenience of supervised Hand-Off-Auto (HOA) switches and potentiometers that provide feedback on an operator’s manual override of an output to the controller’s code. HOA switches are ideal for testing purposes or when performing equipment commissioning and maintenance.



Supports EC-gfxProgram

Supports Distech Controls’ EC-gfxProgram, which makes Building Automation System (BAS) programming effortless by allowing you to visually assemble building blocks together to create a custom control sequence for any HVAC / building automation application.

  • Rugged Inputs/Outputs

    Rugged hardware inputs and outputs eliminate need for external protection components, such as diodes for 12V DC relays.

  • Highly Accurate Universal Inputs

    Highly accurate universal inputs support thermistors and resistance temperature detectors (RTDs) that range from 0 Ohms to 350,000 Ohms, as well as support for inputs requiring 0 to 10VDC or a pulse count. 0-20mA inputs and outputs have a jumper that eliminates the need for external resistors. This provides the freedom of using your preferred or engineer-specified sensors, in addition to any existing ones. The first four universal inputs support fast pulse count reading up to 50 Hz for gas, water, and electric meters and are compatible with an SO rated (optically-isolated) output.

  • Open-to-Wireless

    The controllers are Open-to-Wireless™ ready, and when paired with the Wireless Receiver, work with a variety of wireless battery-less sensors and switches, to reduce the cost of installation and minimize the impact on existing partition walls. For supported frequencies in your area, refer to the Open-to-Wireless Solution Guide. Available with an optional Wireless Receiver that supports up to 28 wireless inputs to create wire-free installations.

Increased Energy Efficiency

Improves energy efficiency when combined with:

CO2 sensors

CO2 sensors as part of a demand-controlled ventilation strategy that adjusts the amount of fresh air intake according to the number of building occupants


Variable-frequency drives to adjust motor speed according to the instantaneous demand of the application.


Allure™ Series

Communicating Sensor Support

These controllers work with a wide range of sensors, such as the Allure Series Communicating Sensors that are designed to provide intelligent sensing and control devices for increased user experience and energy efficiency.

  • Allure EC-Smart-Vue sensors feature a backlit-display and graphical menus that provide precise environmental zone control, with any combination of the following: temperature, humidity, CO2 , and motion sensor
  • Allure EC-Smart-Comfort sensors feature colored LED indicators to provide user feedback, rotary knobs to adjust the setpoint offset and fan speed, and an occupancy override push button. This sensor can also be expanded with a combination of up to 4 add-on push button modules for lighting and shade/ sunblind control.
  • Allure EC-Smart-Air sensors combine precise environmental sensing in a discreet and alluring enclosure for temperature, humidity, and CO2 .


  • 16 universal inputs including 4 for fast pulse counting and metering applications
  • Expandable I/O capabilities with up to 2 ECx modules for a total of 40 inputs and 36 outputs
  • Optional HOA switch with potentiometer to locally override and monitor overridden outputs
  • 15 VDC power supply to power 4-20mA transducers
  • 2 calendar, 10 schedule, 30 loop (PID), and over 300 BACnet objects
  • Internal alarm functionality
  • ECB-650 includes live graphics color display (integrated LCD operator interface)
  • Open-to-Wireless™ Solution: support of up to 28 wireless battery-less inputs
  • ECL 600 and ECL 650 (AHU) LonMark® certified controllers designed to meet oil and gas industry standards