Schneider TAC Xenta 451A Relay Output Module

Description

Schneider TAC Xenta 451A Relay Output Module

The Schneider Electric TAC Xenta 451A is a powerful and versatile controller primarily used in building automation systems (BAS) for heating, ventilation, and air conditioning (HVAC) applications. It belongs to the Xenta 400 series of LonWorks controllers, designed for flexible control and integration within a networked environment.

📋 Product Details and Specifications (Product Parameters)

🌟 Product Advantages (Product Advantages)

• High Flexibility and Versatility: The large number of configurable Universal Inputs (16) makes it suitable for a wide range of applications and sensors without needing external modules.

• Powerful Programming Environment: Utilizes TAC Menta, a graphical, object-oriented programming tool, which simplifies the creation of complex control strategies and facilitates easy troubleshooting and modification.

• Robust Network Integration (LonWorks): LonWorks technology allows the Xenta 451A to seamlessly integrate with other LonWorks devices and controllers within a Distributed Control System (DCS). This ensures reliable, peer-to-peer communication.

• Stand-Alone or Integrated Operation: It can function as a stand-alone controller or be integrated into a larger system supervised by a TAC Vista/StruxureWare Building Operation server.

• Real-Time Control: The built-in Real-Time Clock (RTC) and powerful processor enable precise scheduling, logging, and time-dependent control functions, enhancing energy efficiency.

⚠️ Precautions (Notes)

• Power Supply: Ensure the controller is supplied with the correct voltage ($24\text{V} \text{ AC/DC}$). Incorrect voltage can damage the unit.

• Wiring: Always follow the wiring diagrams provided in the installation manual. Pay special attention to grounding and separating high-voltage and low-voltage wiring to avoid interference.

• LonWorks Network Configuration: Proper configuration of the LonWorks network (e.g., node ID, network variables) is crucial for reliable communication. Use certified LonWorks tools (like LonMaker) for commissioning.

• Heat Dissipation: Mount the controller in an enclosure that provides adequate ventilation to ensure it operates within the specified temperature range ($0$ to $50^\circ\text{C}$).

• Programming Backup: Always back up the application program and configuration data before making significant changes or maintenance.

🏗️ Product Applications (Product Application)

The TAC Xenta 451A is ideally suited for controlling medium to large-scale HVAC equipment and central plant systems.

• • Central Plant Control: Managing chillers, boilers, cooling towers, and primary pump systems.

  • Air Handling Unit (AHU) Control: Implementing complex control sequences for large variable air volume (VAV) or constant air volume (CAV) AHUs, including free cooling and heat recovery.

• General HVAC Equipment: Controlling packaged rooftop units, dedicated outside air systems (DOAS), and large fan coil units.

• Integration and Interfacing: Acting as a bridge or supervisor for simpler controllers or integrating specialized equipment into the main Building Management System (BMS).

Shipping Port: Xiamen, China

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