ABB TU847 3BSE022462R1 S800 I/O Connection Module

Description

Application Scenarios

In a sprawling oil refinery, thousands of analog signals from temperature transmitters, pressure gauges, and control valves need to be routed reliably back to the central Distributed Control System (DCS). Running every 4-20mA signal cable directly to a central cabinet would be a nightmare of cost, complexity, and potential for error. This is where the ABB TU847 3BSE022462R1​ demonstrates its core value. Installed in a remote S800 I/O station near the process units, it acts as the “patch panel” for eight analog loops. A technician lands the field wires from eight pressure transmitters directly onto its clearly labeled, robust screw terminals. On the other side, a compact PFEA111​ analog input module plugs directly into the TU847. This design means the sensitive and expensive electronic module never needs to be disconnected during wiring work. When a transmitter needs replacement, the technician works only on the TU847’s terminals, eliminating risk to the I/O system and dramatically simplifying troubleshooting and maintenance, directly addressing the pain points of installation time, maintenance safety, and system availability.