Electromechanical relay module FBB-2DI1DO-R.230

ACswitchingdigital

Product information
The FBB-2DI1DO-R.230 module provides two digital inputs and one relay output for decentralized switching tasks. It is designed to control motorized fire dampers with end-switch feedback (OPEN/CLOSED) and for general decentralized datapoints in building automation (remote I/Os).

Runtime measurement
For motorized fire dampers the module supports objects that record measured run times. Measurement occurs on every damper operation and captures total opening/closing time and dead time (time until leaving the original position is reported). Measured values are compared with maximum limits configured during commissioning.

Available variants / options

• Supply voltage: selectable 24 V or 230 V. In R.230 variants the supply voltage is also switched to the relay output (L 230 V via the relay contact to the digital output).
• Option "AMP": variants with AMP-style connector sockets for connecting preassembled cables from fire damper manufacturers.

Technical specifications

• Product number: 00003221
• Brand: romutec Steuer- und Regelsysteme GmbH
• Model: FBB-2DI1DO-R.230
• Function: 2 digital inputs, 1 relay output
• Relay output: 230 V / 16 A (R.230 variants)
• Supply voltage: selectable 24 V AC/DC or 230 V AC
• Options: "AMP" connector variant
• Bus interface: RS485, galvanically isolated
• Protocol: BACnet MS/TP (RS485)
• Supported baud rates: 9,600; 19,200; 38,400; 57,600; 76,800; 115,200
• Operating temperature: 0...50°C
• Storage/transport temperature: -10...70°C
• Relative humidity: 10...90% non-condensing
• Ingress protection: IP67 with cable glands; alternatives IP66 or IP54 depending on variant
• Weight: 0.468 kg
• Release date: 2026-04-28

Downloads
Datasheet, wiring diagram and other technical documents are available.