JOHNSON CONTROLS METASYS MS-MIG3120-0 REV.T INTEGRATOR CONTROLLER 24VAC 016 141

JOHNSON CONTROLS METASYS MS-MIG3120-0 REV.T INTEGRATOR CONTROLLER 24VAC 016 141

The MS-MIG3120-0 is a networked, programmable field controller designed for the Metasys system. Its primary function is to monitor, manage, and control building HVAC and mechanical equipment (like air handlers, chillers, boilers, VAV boxes, etc.) and integrate third-party devices that use non-Metasys communication protocols.

• Integration Hub: A key feature is its ability to act as a protocol gateway. It can communicate with and translate data from devices using open or proprietary protocols (like BACnet MS/TP, LonWorks, Modbus, etc.) and present that data seamlessly on the Metasys network.

• Standalone Control: It also performs direct digital control (DDC) for connected sensors and actuators.

Technical Specifications

• Power Supply: 24 VAC (This is the operating voltage. The amperage requirement is not specified in the part number but must be checked in the installation manual).

• Catalog Number: 016

• MODEL: MS-MIG3120-0

• RY10406, REV.T

• INPUT/OUTPUT: 24VAC MAX, CLASS2

Typical Features & Capabilities

• Processing: Contains a microprocessor for executing control logic and algorithms.

• Inputs/Outputs (I/O): The specific quantity and type (Digital Inputs, Analog Inputs, Digital Outputs, Analog Outputs) are not defined by the model number alone. The -0 suffix often indicates a base model, with expansion modules (like the MS-IOE modules) available to add more I/O points as needed.

• Communication Ports:

  • N2 Bus: The primary Metasys field-level communication network (likely the main network port).

  • Other Ports: Typically includes serial ports (RS-232/RS-485) for connecting to and integrating third-party devices using various protocols.

• Programming: Programmed using Johnson Controls’ Metasys Application and Data Display (ADS/ADX) software or related tools to create custom control sequences.

Common Applications

• Integrating standalone rooftop units (RTUs) with BACnet MS/TP into a Metasys BMS.

• Connecting a chiller plant with a Modbus RTU interface to the Metasys supervisor.

• Serving as the main DDC controller for a large air handling unit (AHU) while also polling data from connected LON-based VAV controllers.

• Acting as a zone controller in a larger Metasys Extended Architecture (MSEA) system.