Schneider TAC Xenta 452A Relay output module

Description

Schneider TAC Xenta 452A Relay output module

The TAC Xenta 452A is a high-performance, programmable controller designed for heating, ventilation, and air conditioning (HVAC) systems. As part of the Xenta 400 series, it functions as an interoperable LonWorks device, offering flexibility in building management systems (BMS).

1. Product Description

The TAC Xenta 452A is an Universal Controller/Base Unit that operates as a LonMark-certified device. It is specifically designed to manage a variety of HVAC applications, such as air handling units, boiler plants, and cooling systems. It features a built-in display and keypad for local monitoring and configuration, making it ideal for plant rooms where manual override or status checks are frequently required.

2. Technical Specifications

The unit is characterized by its robust I/O configuration and communication capabilities:

3. Key Product Advantages

• Interoperability: Based on LonWorks technology, it easily integrates with third-party devices and higher-level BMS software (like EcoStruxure Building Operation).

• User-Friendly Interface: The integrated operator panel allows users to view alarms, adjust setpoints, and check status without needing a laptop.

• Flexibility: It can act as a standalone controller or as part of a distributed network.

• Scalability: Can be expanded using TAC Xenta 400 series I/O modules to increase the number of physical points.

• Energy Efficiency: Highly programmable logic allows for sophisticated energy-saving strategies.

4. Product Applications

The Xenta 452A is versatile and commonly used in:

• Air Handling Units (AHUs): Controlling fans, dampers, and temperature valves.

• Heating Systems: Managing boiler sequencing and weather-compensated heating circuits.

• Chiller Plants: Coordinating cooling demands and pump operations.

• Zone Control: Managing large-scale climate control in commercial offices and hospitals.

5. Important Considerations & Precautions

• Wiring: Ensure the 24V power supply is correctly polarized to avoid damage to the LonWorks communication chip.

• Environment: The unit is rated IP20, meaning it must be installed in a protective cabinet or enclosure away from moisture and dust.

• Programming: Requires TAC Menta software for graphical programming and configuration.

• LonWorks Termination: Ensure the network is correctly terminated with a terminator (RC-link) to prevent communication interference.

• Legacy Status: Please note that the TAC Xenta series is a legacy line. For new installations, Schneider Electric often recommends transitioning to the SpaceLogic (AS-P/AS-B) series.

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