The SXWCFV4A20001 is a compact VAV terminal unit controller from the Schneider Electric Smart Field range, supplied as a field bus device with four points in total. This integrated solution includes both the damper actuator and airflow sensing element within the assembly, enabling direct mounting onto the terminal box.

The integrated design eliminates alignment issues, separate tubing runs, and multiple devices typically required in conventional arrangements. This makes it particularly suitable for single duct boxes where ceiling space is limited and installation labor represents the dominant cost factor.

Communication is supported on both BACnet MS/TP and Modbus RTU protocols, allowing flexible integration with existing field bus systems. Commissioning is performed using the manufacturer's dedicated Smart Field tool rather than general-purpose programming environments.

Installation quality is determined by mechanical fit rather than wiring, as both actuator and transducer are integrated into the controller. Verify shaft diameter and extension against the terminal box specifications before ordering.

As a field bus participant without an Ethernet port, the device operates on MS/TP trunks or Modbus segments and requires a supervisory server for trend, alarm, and schedule services. While the box can control itself independently, interrogation requires a head-end system.

Follow project addressing conventions carefully, as renumbered VAV boxes are difficult to trace from ceiling locations. Proper trunk commissioning and documentation are essential for system functionality.

• Speculative Office Floors: Ideal for installations with dozens of single duct boxes where separate component mounting would dominate labor costs
• Interior Zones with Reheat: Two digital outputs support staged or floating reheat control for zones with reheat coils
• Hotels & Serviced Apartments: Suitable for individual room boxes requiring airflow control without full IP infrastructure
• Educational & Healthcare Buildings: Compatible with field bus trunk systems from plant room servers
• Retrofit Projects: Integrated package fits spaces previously occupied by older devices
• Quality-Sensitive Installations: Integral airflow sensing eliminates risks associated with on-site tubing work quality