OPN-RTUM2 | Carrier Integrated RTU Open Controller, 24VAC, BACnet/Modbus/LonWorks, Stand-Alone or BAS-Ready

Carrier · PLCs & Industrial Controllers

Description The Carrier OPN-RTUM2 is an integrated rooftop unit (RTU) controller engineered for standalone operation or seamless integration with building automation systems. Supporting BACnet, Modbus, LonWorks, and EIA-485 communication, it delivers precise monitoring and control of constant-volume rooftop HVAC equipment. Its factory-programmed logic and plug-and-play compatibility with the Carrier i-Vu platform ensure efficient, reliable, and optimized unit performance.     Technical Specifications Condition New/Never Used Surplus Brand Carrier Category PLCs / Machine Control Part Number OPN-RTUM2 Subcategory RTU Open Controller / PC Board PLC Add-On Operational Mode Stand-Alone Operation Compatibility Carrier i-Vu System Communication Protocols BACnet, Modbus, LonWorks, EIA-485 Analog Inputs 6 Binary Inputs 5 Analog Outputs 2 Binary Outputs 8 Power Supply 24 VAC, 50/60 Hz Application Constant-Volume Rooftop Unit Control Integration BAS Connectivity (Carrier or Third-Party)     Information About OPN-RTUM2 The OPN-RTUM2 controller is part of Carrier’s RTU Open series, designed to manage rooftop unit operation either independently or as part of a connected Building Automation System. Built with a robust onboard control algorithm, it regulates heating, cooling, ventilation, and fan functions to maintain consistent environmental performance. With support for open communication protocols—BACnet, Modbus, LonWorks, and EIA-485—the controller integrates easily with Carrier i-Vu systems as well as third-party BAS networks. Its I/O configuration includes six analog inputs, five binary inputs, two analog outputs, and eight binary outputs, providing flexibility for various RTU configurations. Powered by 24 VAC at 50/60 Hz, the OPN-RTUM2 is engineered for reliable operation in commercial HVAC applications where interoperability and precise control are essential. Key Features Multi-protocol support: BACnet, Modbus, LonWorks, and EIA-485 communication for universal BAS integration. Stand-alone capability: Operates independently without requiring a central automation system. Optimized RTU control: Factory-engineered logic for constant-volume rooftop unit operation. i-Vu plug-and-play compatibility: Enables seamless setup within Carrier building automation platforms. Expanded I/O options: Includes 6 analog inputs, 5 binary inputs, 2 analog outputs, and 8 binary outputs. 24 VAC power input: Compatible with standard HVAC control transformers. Flexible deployment: Supports OEM installation, retrofit upgrades, and multi-system BAS integration. Reliable operation: Designed for continuous environmental monitoring and energy-efficient performance. The OPN-RTUM2 provides the control flexibility, communication capability, and reliability required for modern rooftop HVAC automation.

Brand: Carrier · Category: PLCs & Industrial Controllers

Key features

• Multi-protocol support: BACnet, Modbus, LonWorks, and EIA-485 communication for universal BAS integration.
• Stand-alone capability: Operates independently without requiring a central automation system.
• Optimized RTU control: Factory-engineered logic for constant-volume rooftop unit operation.
• i-Vu plug-and-play compatibility: Enables seamless setup within Carrier building automation platforms.
• Expanded I/O options: Includes 6 analog inputs, 5 binary inputs, 2 analog outputs, and 8 binary outputs.
• 24 VAC power input: Compatible with standard HVAC control transformers.
• Flexible deployment: Supports OEM installation, retrofit upgrades, and multi-system BAS integration.
• Reliable operation: Designed for continuous environmental monitoring and energy-efficient performance.

Specifications

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