The FBB-8UX2DO is a versatile fieldbus module with BACnet MS/TP connectivity, specifically designed for decentralized control tasks and input signal acquisition. It features eight universal I/Os and two digital relay outputs. Its flexible configuration makes it ideal for use in heating, ventilation, and air conditioning (HVAC) systems, as well as individual room control and decentralized installations.

Features

The eight universal I/Os can be configured as analog inputs (AI), analog outputs (AO), or digital inputs (DI). This flexibility allows for the connection of various sensors and actuators, such as temperature sensors (Pt100, Pt1000, Ni1000, NTC), resistance sensors, and current/voltage signals (0-10 V, 0-20 mA). An integrated counter function supports processing digital inputs at a frequency of up to 5 Hz.

The two digital relay outputs (DO) are designed for a maximum switching capacity of 7 A at 230 V AC. These potential-free normally open (NO) contacts are ideal for controlling loads such as light strips or motorized devices.

Technical Specifications

• Power Supply: Options for 24 V AC/DC and 230 V AC
• Current Consumption: Typically 34 mA, maximum 63 mA
• Power Requirement: Typically 4.5 W, maximum 8.3 W
• Universal I/Os:
  • AO: 0-10 V or 0-20 mA
  • AI: 0-10 V, 0-20 mA, various resistance sensors
  • DI: Potential-free or 24 V, counter function up to 5 Hz
• Digital Outputs:
  • Number: 2 normally open (NO), potential-free
  • Max. Switching Capacity: 1385 VA / 150 W
  • Max. Switching Voltage: 255 V AC / 30 V DC
• Communication: BACnet MS/TP via RS485
• Supported Baud Rates: 9,600 to 230,400 baud (autobauding)
• Protection Class: IP66
• Operating Temperature: 0 to 50 °C
• Dimensions: 160 x 140 x 81 mm (excluding fittings)

Advantages

The FBB-8UX2DO stands out for its universal application possibilities and ease of integration into BACnet MS/TP networks. Tool-free push-in terminals simplify installation, while the robust IP66 design allows for use in demanding environments.

Applications

• Decentralized installation for heating and ventilation systems
• Individual room control with various sensor and actuator connections
• Control of light strips and motorized devices
• Integration into BACnet-based building automation systems

Conclusion

The FBB-8UX2DO is a modern and powerful module that excels in flexibility and reliability. It is the perfect choice for decentralized automation projects requiring versatility and robust performance.