Schneider TAC Xenta 422 Relay Output Module

Description

Schneider TAC Xenta 422 Relay Output Module

The Schneider TAC Xenta 422 is a Digital Input/Output (I/O) expansion module within the TAC Xenta family of products. It is designed to extend the I/O capabilities of TAC Xenta controllers (such as the Xenta 301, 302, or 401) in building automation and HVAC systems.

Key features of the Xenta 422 (or the newer 422A model) include:

• Expansion Module: It connects to and is managed by a main Xenta controller via a common network (typically LonWorks).

• Built-in Diagnostics: It features LED status indicators for each digital input for easy status checking.

• Local Control: It includes manual override switches for the digital outputs, allowing for local bypass and control during commissioning or maintenance.

• Configurable Indicators: The color of the DI indicator LEDs (red or green) can be selected.

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

⚙️ Product Specifications (Xenta 422 / 422A)

The specifications may vary slightly between the Xenta 422 and the updated 422A model. Here are the common key parameters:

✅ Product Advantages (Benefits)

The TAC Xenta 422 offers several advantages for building control systems:

• System Scalability: It allows for the easy and cost-effective expansion of I/O points for main controllers, providing flexibility for larger or growing installations.

• Enhanced Diagnostics: The LED status indicators for digital inputs facilitate quick troubleshooting and status verification without needing to check the central controller software.

• Reliable Local Control: The manual override switches provide a crucial safety and maintenance feature, allowing technicians to physically bypass the automated control for testing or emergency situations.

• Integration: Designed for seamless integration into the TAC Xenta and TAC Vista (now part of EcoStruxure Building Operation) environment, supporting the open LonWorks standard.

• Versatility: The digital inputs can also function as pulse counters, increasing the module’s application range.

• Cost-Effective Installation: Features like a separate terminal base and plug-in electronic unit often simplify installation and maintenance.

⚠️ Important Considerations (Precautions)

When installing and operating the TAC Xenta 422, the following should be considered:

• Compatibility: Ensure the module is compatible with your specific model of TAC Xenta controller (e.g., 301, 302, 401).

• Power Requirements: The module requires a 24 VAC power supply from a suitable transformer.

• Wiring Standards: Adhere to maximum wire lengths and gauge requirements (e.g., 660 ft. max, 22 AWG for DI) to ensure signal integrity.

• Output Limits: Do not exceed the maximum control voltage (230 VAC) and current (2A) for the relay outputs to prevent damage.

• Software Configuration: The module requires proper configuration and association with a controller using the TAC Menta® tool.

• Smoke Control Applications: If used in a UL-listed smoke control system, there are strict installation requirements, such as locating the module within 20 feet of the Fire Alarm Panel (FAP) and connecting it in conduit.

🏢 Product Applications

The TAC Xenta 422 is a highly versatile I/O module primarily used in Building Automation Systems (BAS) and Heating, Ventilation, and Air Conditioning (HVAC) control.

Typical applications include:

1. HVAC Equipment Control:

   • On/Off control of fans, pumps, and compressors (using the digital relay outputs).

   • Monitoring the status of equipment (e.g., fan running/stopped, filter status) via the digital inputs.

2. General Facility Equipment Control:

   • Control of lighting circuits or other basic on/off loads.

   • Monitoring door contacts or alarm dry contacts.

3. Smoke Control Systems:

   • Receiving alarm signals from a Fire Alarm Panel (FAP) via contact closures.

   • Controlling dampers, smoke exhaust fans, or pressurization systems as part of an automated or manual smoke control response.

4. Pulse Counting:

   • Measuring utility consumption (e.g., water, gas, electricity) from meters that provide a pulse output.

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