TAC Xenta 421A SCHNEIDER Power module

Description

TAC Xenta 421A SCHNEIDER Power module

Product Dimensions：

Product Description

The TAC Xenta 421A is a module designed to expand the input and output capabilities of TAC Xenta controllers (such as the 301, 302, or 401 series) within a building management system (BMS).

• Type: Universal Input and Digital Output Module.

• Function: It acts as a slave device on the common network (LonWorks/LonMark compatible) to facilitate the monitoring of various field devices and the control of equipment like dampers, valves, pumps, and fans.

• Inputs: It is equipped with Universal Inputs (UI), meaning the four input channels can be individually configured for different signal types, offering great flexibility.

• Outputs: It features Digital Outputs (DO), typically implemented as relay contacts, for on/off control of external equipment.

• Configuration: The module is associated and configured using the TAC Menta® graphical engineering tool.

Product Specifications

Product Advantages

• High Flexibility: The key advantage is the Universal Input capability. This means a single module part number can handle various sensor types (temperature, pressure, status, pulse count, etc.), simplifying inventory and installation.

• System Expandability: It allows for easy and cost-effective expansion of the main controller’s I/O count without needing to replace the core controller unit.

• Robust Control: The use of dedicated relay outputs provides reliable on/off control for higher-power field equipment compared to solid-state or triac outputs.

• LonWorks Integration: Seamless integration into existing TAC Xenta and LonMark-based building automation networks.

• Ease of Configuration: The use of the TAC Menta graphical tool simplifies the engineering, programming, and commissioning process.

Precautions

• Power Supply: Ensure the correct 24 V AC power supply is used and that the transformer is appropriately sized for the module and all connected field devices (Max 8 VA for the module itself).

• Wiring: Adhere strictly to local electrical codes and the manufacturer’s wiring diagrams. Use the correct wire gauge (e.g., 14-18 AWG for Digital Outputs) and maintain maximum wire lengths (e.g., 660 ft max for inputs).

• Relay Protection: The digital outputs are relay contacts. They should be protected by an external fuse, typically max 10 A, and used within the specified current and voltage limits (Max 2 A, 250 V AC).

• Grounding and Shielding: Proper grounding and shielding practices are essential for network and analog signal integrity, especially in environments with high electrical noise.

• Configuration Tool: The module requires configuration through the TAC Menta engineering tool to define the type of universal input and assign control logic.

Product Applications

The TAC Xenta 421A is widely used in HVAC (Heating, Ventilation, and Air Conditioning) and general building automation control.

• HVAC Equipment Control:

  • Controlling Fans and Pumps (On/Off control).

  • Operating Damper Actuators (Open/Closed control).

  • Controlling Staging of Heating/Cooling Equipment.

• Monitoring and Alarming:

  • Monitoring equipment status (e.g., run status, fault status) using Digital Inputs.

  • Monitoring temperature sensors (e.g., room, duct, or outside air temperature) using the Thermistor Input mode.

  • Monitoring pressure/humidity sensors that provide $0-10\,\text{V}$ or $0-20\,\text{mA}$ outputs.

• General Facility Control:

  • Controlling lighting circuits or other non-HVAC loads.

  • Used in Smoke Control Systems as an approved I/O expansion module for alarm input and equipment control.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

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

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