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Alerton VAV-SD2A-E VisualLogic BACnet Single-Duct Variable Air Volume Field Controller
- Regular price
- $1,082.00
- Sale price
- $1,082.00
- Regular price
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Product Description P/N: VAV-SD2A-E
Description
The Alerton VAV-SD2A-E is a fully programmable BACnet field controller designed for pressure-independent control of single-duct Variable Air Volume (VAV) terminal units. Featuring an integrated airflow sensor, configurable analog outputs, and native BACnet MS/TP communication, the VAV-SD2A-E delivers precise airflow regulation, energy-efficient operation, and seamless integration into commercial building automation systems.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Alerton |
| Category | Building Automation |
| Part Number | VAV-SD2A-E |
| Subcategory | BACnet VAV Field Controller |
| Series | VisualLogic® |
| Product Type | Programmable DDC VAV Controller |
| Communication Protocol | BACnet MS/TP |
| Communication Speed | Up to 115.2 kbps |
| Application | Single-Duct Variable Air Volume (VAV) Terminal Units |
| Control Method | Pressure-Independent Airflow Control |
| Integrated Airflow Sensor | Factory Calibrated Differential Pressure Sensor |
| Analog Outputs | 2 Selectable Outputs (0–10 VDC or 0–20 mA) |
| Supported Equipment | Variable-Speed Fans, Analog Valves, VAV Dampers |
| Programming Software | Alerton VisualLogic™ |
| Memory | Nonvolatile Flash Memory |
| Compatible Wall Sensors | Alerton Microtouch™, BACtalk® Microset™, Microset II®, Microset 4® |
| Configuration | Adjustable Minimum, Maximum, and Reheat Airflow Settings |
| Power Supply | 24 VAC |
| Mounting | Direct Mount on VAV Terminal Unit |
| Typical Applications | Single-Duct VAV Boxes, Series Fan-Powered VAV Units, Commercial Office Buildings, Hospitals, Schools, Hotels |
| Weight | Approximately 0.5 kg |
Information About VAV-SD2A-E
The VAV-SD2A-E is part of the Alerton VisualLogic® family of intelligent VAV controllers developed for advanced HVAC zone control applications. Designed specifically for single-duct VAV boxes, including series fan-powered terminal units, the controller incorporates a factory-calibrated differential airflow sensor that enables accurate pressure-independent airflow regulation without requiring external pressure transducers. The controller is fully programmable using Alerton's VisualLogic graphical programming environment and stores all applications and configuration data in nonvolatile Flash memory to ensure reliable operation during power interruptions. Native BACnet MS/TP communication allows direct integration with Alerton Compass®, Envision, and other BACnet supervisory systems while supporting intelligent wall sensors such as the Alerton Microtouch™, BACtalk® Microset™, Microset II®, and Microset 4® for local occupant interaction and technician diagnostics.
Key Features:
- Native BACnet MS/TP controller: Communicates directly on BACnet networks at speeds up to 115.2 kbps.
- Pressure-independent VAV control: Integrated airflow sensor maintains accurate airflow regardless of duct pressure changes.
- Designed for single-duct VAV systems: Optimized for standard and fan-powered VAV terminal units.
- Integrated airflow sensor: Factory calibrated and field adjustable during system balancing.
- Two configurable analog outputs: Selectable as 0–10 VDC or 0–20 mA for variable-speed fans, valves, and actuators.
- Fully programmable logic: Configured using Alerton VisualLogic™ graphical programming software.
- Nonvolatile Flash memory: Preserves programs and configuration without battery backup.
- Intelligent wall sensor compatibility: Supports Microtouch™, Microset™, Microset II®, and Microset 4® devices.
- Variable-speed fan support: Eliminates the need for additional control hardware in fan-powered VAV applications.
- Adjustable airflow parameters: Minimum, maximum, and reheat airflow settings are field configurable.
- Fast digital processing: Provides responsive and stable HVAC control performance.
- Optional filtered version: VAV-SD2A-E-F model includes an inlet filter to reduce dust contamination.
The VAV-SD2A-E delivers the reliability and precision required for intelligent VAV terminal control, commercial HVAC automation, and energy-efficient BACnet building management.
Description
The Alerton VAV-SD2A-E is a fully programmable BACnet field controller designed for pressure-independent control of single-duct Variable Air Volume (VAV) terminal units. Featuring an integrated airflow sensor, configurable analog outputs, and native BACnet MS/TP communication, the VAV-SD2A-E delivers precise airflow regulation, energy-efficient operation, and seamless integration into commercial building automation systems.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Alerton |
| Category | Building Automation |
| Part Number | VAV-SD2A-E |
| Subcategory | BACnet VAV Field Controller |
| Series | VisualLogic® |
| Product Type | Programmable DDC VAV Controller |
| Communication Protocol | BACnet MS/TP |
| Communication Speed | Up to 115.2 kbps |
| Application | Single-Duct Variable Air Volume (VAV) Terminal Units |
| Control Method | Pressure-Independent Airflow Control |
| Integrated Airflow Sensor | Factory Calibrated Differential Pressure Sensor |
| Analog Outputs | 2 Selectable Outputs (0–10 VDC or 0–20 mA) |
| Supported Equipment | Variable-Speed Fans, Analog Valves, VAV Dampers |
| Programming Software | Alerton VisualLogic™ |
| Memory | Nonvolatile Flash Memory |
| Compatible Wall Sensors | Alerton Microtouch™, BACtalk® Microset™, Microset II®, Microset 4® |
| Configuration | Adjustable Minimum, Maximum, and Reheat Airflow Settings |
| Power Supply | 24 VAC |
| Mounting | Direct Mount on VAV Terminal Unit |
| Typical Applications | Single-Duct VAV Boxes, Series Fan-Powered VAV Units, Commercial Office Buildings, Hospitals, Schools, Hotels |
| Weight | Approximately 0.5 kg |
Information About VAV-SD2A-E
The VAV-SD2A-E is part of the Alerton VisualLogic® family of intelligent VAV controllers developed for advanced HVAC zone control applications. Designed specifically for single-duct VAV boxes, including series fan-powered terminal units, the controller incorporates a factory-calibrated differential airflow sensor that enables accurate pressure-independent airflow regulation without requiring external pressure transducers. The controller is fully programmable using Alerton's VisualLogic graphical programming environment and stores all applications and configuration data in nonvolatile Flash memory to ensure reliable operation during power interruptions. Native BACnet MS/TP communication allows direct integration with Alerton Compass®, Envision, and other BACnet supervisory systems while supporting intelligent wall sensors such as the Alerton Microtouch™, BACtalk® Microset™, Microset II®, and Microset 4® for local occupant interaction and technician diagnostics.
Key Features:
- Native BACnet MS/TP controller: Communicates directly on BACnet networks at speeds up to 115.2 kbps.
- Pressure-independent VAV control: Integrated airflow sensor maintains accurate airflow regardless of duct pressure changes.
- Designed for single-duct VAV systems: Optimized for standard and fan-powered VAV terminal units.
- Integrated airflow sensor: Factory calibrated and field adjustable during system balancing.
- Two configurable analog outputs: Selectable as 0–10 VDC or 0–20 mA for variable-speed fans, valves, and actuators.
- Fully programmable logic: Configured using Alerton VisualLogic™ graphical programming software.
- Nonvolatile Flash memory: Preserves programs and configuration without battery backup.
- Intelligent wall sensor compatibility: Supports Microtouch™, Microset™, Microset II®, and Microset 4® devices.
- Variable-speed fan support: Eliminates the need for additional control hardware in fan-powered VAV applications.
- Adjustable airflow parameters: Minimum, maximum, and reheat airflow settings are field configurable.
- Fast digital processing: Provides responsive and stable HVAC control performance.
- Optional filtered version: VAV-SD2A-E-F model includes an inlet filter to reduce dust contamination.
The VAV-SD2A-E delivers the reliability and precision required for intelligent VAV terminal control, commercial HVAC automation, and energy-efficient BACnet building management.