TAC Xenta 301 SCHNEIDER

TAC Xenta 301 SCHNEIDER Power module

Product  Description：

The Schneider Electric TAC Xenta 301 is a powerful, freely programmable control unit primarily used in Building Management Systems (BMS), specifically within the TAC Vista or EcoStruxure Building Operation ecosystems. It is part of the Xenta series of controllers, designed to manage and automate functions in HVAC, lighting, and energy monitoring applications within commercial and institutional buildings.

Product Specifications

• Product Type: Programmable LonWorks Controller

• Communication Protocol: LonTalk/LonWorks (FTT-10A physical layer)

• Processor: High-performance 16-bit microprocessor

• Memory: Includes battery-free non-volatile memory for application programs and configuration data.

• I/O Points: Offers a fixed set of onboard inputs and outputs:

  • Analog Inputs (AI): 8 inputs, configurable as 0-10 VDC, 4-20 mA, or temperature sensor inputs (e.g., $10 \text{ k}\Omega$ thermistors).

  • Digital Inputs (DI): 4 inputs, typically used for status monitoring or pulse counting.

  • Analog Outputs (AO): 4 outputs, typically 0-10 VDC for actuator or valve control.

  • Digital Outputs (DO): 4 relay outputs for ON/OFF control of equipment like fans or pumps.

• Power Supply: $24 \text{ VAC}$ or $24 \text{ VDC}$

• Programming: Programmed using the TAC Menta graphical programming tool or through the TAC Vista software suite.

• Network Integration: Connects to the main BMS network via LonWorks and can also support Modbus communication through add-on modules.

Product Advantages

• Freely Programmable: The Xenta 301 is a highly flexible controller. The use of the TAC Menta graphical programming environment allows engineers to create custom control strategies specifically tailored to complex building requirements without being limited to pre-defined applications.

• Distributed Intelligence (LonWorks): As a LonWorks device, it supports a distributed control architecture. This means intelligence is spread across the network, improving system reliability, reducing dependency on a central server, and simplifying network expansion.

• Extensive I/O Capability: The controller offers a good balance of input and output types (Analog, Digital, Relay) in a compact unit, making it suitable for controlling medium-sized plant equipment such as air handling units (AHUs) or complex terminal units.

• System Integration: It integrates natively with Schneider Electric's high-level BMS platforms, such as TAC Vista and EcoStruxure Building Operation, allowing for unified management, trending, and alarming across the entire facility.

• Non-volatile Memory: The inclusion of battery-free non-volatile memory eliminates the need for battery replacement and ensures that the application program and configuration data are retained even after a power outage.

Important Considerations (Precautions)

• Legacy Status: The TAC Xenta series, including the 301, is an end-of-life or legacy product. Schneider Electric recommends the use of newer controllers, such as the EcoStruxure Building Expert or SmartX AS-P/AS-B controllers, for new installations. Users should be aware of potential future support limitations.

• LonWorks Network Tooling: Commissioning and maintenance require specific LonWorks network management tools (like LonMaker) and the TAC Vista or EcoStruxure software suite.

• Voltage and Current Ratings: Always adhere strictly to the specified maximum voltage and current ratings for the I/O points to prevent damage to the controller and connected field devices. Use appropriate relays or interface devices for higher power loads.

• Installation Environment: The controller should be mounted in a protective enclosure, typically within a control panel, protected from direct sunlight, moisture, and excessive vibration, ensuring the operating temperature limits are not exceeded.

• Proper Grounding: Ensure correct grounding and wiring practices are followed to avoid interference and maintain communication stability on the LonWorks network.

Product Applications

The TAC Xenta 301 is widely deployed in commercial, institutional, and industrial buildings to provide local, decentralized control over various systems.

• Air Handling Unit (AHU) Control: Managing complex AHU functions, including heating, cooling, humidification, fan speed control, and economizer operations.

• Boiler and Chiller Plant Control: Implementing sequencing, optimization, and safety control logic for primary plant equipment.

• Lighting Control: Managing large zones of lighting, often integrated with occupancy sensors and time schedules.

• Terminal Unit Control: While more powerful than necessary for simple VAV boxes, it can control complex fan coil units or specialized equipment with numerous I/O points.

• Custom Control Loops: Acting as a general-purpose controller to implement custom sequencing and energy-saving strategies that require multiple inputs and outputs, such as heat recovery systems or specialized laboratory control.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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