TAC Xenta 302 SCHNEIDER

TAC Xenta 302 SCHNEIDER Power module

Product  Description：

The Schneider Electric TAC Xenta 302 is a programmable LonWorks-based controller designed for various applications within building automation and HVAC (Heating, Ventilation, and Air Conditioning) systems. It serves as a universal controller capable of managing complex control functions for air handlers, central plant equipment, or lighting systems.

Product Specifications

• Product Type: Programmable LonWorks Controller

• Series: TAC Xenta

• Connectivity: LonWorks (FTT-10A Free Topology Transceiver) for network communication.

• Power Supply: $24 \text{ V AC}$

• Inputs:

  • 8 Universal Inputs (UI): Used for connecting temperature sensors, digital contacts, or voltage/current signals ($0$ to $10 \text{ VDC}$ or $0$ to $20 \text{ mA}$).

• Outputs:

  • 4 Digital Triac Outputs (DO): Used for switching on/off or pulsed control of devices like small relays or fan stages.

  • 4 Analog Outputs (AO): Provides continuous control signals ($0$ to $10 \text{ VDC}$) for devices like damper actuators, valve actuators, or variable frequency drives (VFDs).

• Programming: Programmed using TAC Menta, a graphical programming tool based on function blocks.

• Memory: Features an internal battery for backup of the real-time clock (RTC) and critical data.

• Operating Temperature: Typically rated for industrial and commercial environments, often from $0$ to $50^\circ\text{C}$ ($32$ to $122^\circ\text{F}$).

Product Advantages

• High Flexibility: The combination of 8 universal inputs, 4 digital outputs, and 4 analog outputs provides a versatile I/O mix suitable for controlling a wide range of mechanical equipment types.

• LonWorks Compatibility: As a native LonWorks device, it seamlessly integrates into existing LonTalk networks, allowing for peer-to-peer communication with other devices and supervisory systems using the Echelon Neuron Chip technology.

• Graphical Programming: The use of the Menta programming tool simplifies the creation and modification of control strategies, making complex sequences easier to implement and maintain than traditional line code programming.

• Stand-Alone or Integrated Control: The Xenta 302 can operate as a stand-alone controller or as part of a larger Building Management System (BMS) for centralized monitoring and control.

• Reliability: Designed for continuous operation in HVAC and building automation environments, contributing to reliable system performance.

Important Considerations (Precautions)

• Programming Tool Requirement: The controller requires the specialized TAC Menta software and a LonWorks interface for configuration, programming, and commissioning.

• Power Supply: Always ensure the controller is supplied with the correct $24 \text{ V AC}$ power, as incorrect voltage can damage the unit.

• Input Limitations: Pay close attention to the input specifications. Universal Inputs must be configured correctly for the specific sensor type (temperature, voltage, digital) to ensure accurate readings.

• Output Loading: The digital (Triac) and analog outputs have specific load limitations (current capacity for digital, and minimum impedance for analog outputs) that must not be exceeded to prevent damage.

• Proper Grounding: Proper grounding and wiring practices are essential to prevent electrical noise interference on the LonWorks network and input signals, ensuring stable communication and reliable control.

Product Applications

The TAC Xenta 302 is widely used for localized and complex control tasks within commercial, institutional, and industrial buildings.

• Air Handling Units (AHUs): Controlling temperature, humidity, and pressure in medium to large AHUs, including controlling heating and cooling coils, mixing dampers, and fan speed (via VFD interface).

• Central Plant Equipment: Managing chillers, boilers, pumps, and heat exchangers, often coordinating multiple units for optimal energy efficiency.

• VAV (Variable Air Volume) Systems: Controlling reheat coils, damper positions, and monitoring room conditions in VAV boxes, although it is often used for the zone supervisor or larger plant control.

• Lighting Control: Implementing time-based, occupancy-based, or daylight-harvesting control strategies for large groups of light fixtures.

• General Equipment Control: Any application in a building environment requiring a high degree of programmable flexibility and a mix of digital and analog I/O points.

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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