ABB CRBX01 Remote Bus Extension Module

Technical Specifications Model: CRBX01 System Compatibility: ABB Procontic CS31 distributed control system Communication Protocol: ABB proprietary CS31 field‑bus protocol Interface: CS31 bus in‑port, CS31 bus out‑port, screw‑type signal terminals Power Supply: 24 V DC, operating range 18‑30 V DC Operating Temperature: ‑20 ℃ to +60 ℃ Storage Temperature: ‑40 ℃ to +85 ℃ Relative Humidity: 5‑95 %, non‑condensing Mounting Type: Standard DIN‑rail mounting Protection Class: IP20 Certifications: CE

Functional Features Realizes CS31 field‑bus signal electrical isolation between main‑rack side and remote I/O station side. Extends effective transmission distance of CS31 bus segment. Built‑in surge‑protection circuit restrains transient high‑voltage interference superimposed on bus cable. Completes CS31 bus signal level shaping and driving enhancement. Front‑panel LED indicators display power‑on and bus communication activity status. DIN‑rail compact modular design, convenient for installation inside local cabinet or remote field cabinet.

Application Scenarios CS31 distributed automation‑system bus‑extension spare‑part replacement. Industrial site where CS31 main control rack and remote distributed I/O stations have long physical distance. Distributed control project needing electrical isolation between multiple CS31 bus segments.

Installation Requirements Snap CRBX01 module onto standard DIN‑rail inside control cabinet and lock back‑side spring‑clip. Connect 24 V DC power‑supply cable to corresponding screw‑type power terminals. Connect CS31 main‑rack bus cable to bus‑in terminals, connect remote‑station bus cable to bus‑out terminals. Install terminal matching resistor at two ends of CS31 bus segment complying with CS31 system specification. Complete cabinet protective earthing according to system grounding requirement. Separate CS31 bus signal cables and high‑power power cables. Ambient operating temperature must keep within ‑20 ℃ ~ +60 ℃ without condensation.