ABB KUC755AE105 3BHB005243R0105 Redundancy Interface Module

Technical Specifications

Model: KUC755AE105

Part Number: 3BHB005243R0105

Brand: ABB

Product Type: Redundancy link interface module

Communication Interface: Multi‑mode fiber optical port

Applicable Controller: AC 800M series CPU

Applicable System: ABB 800xA DCS

Hot‑swap Support: Yes

Operating Temperature: ‑20℃ ~ +60℃

Protection Class: IP20

Mounting: Rack‑mount installation

Core Function: High‑speed real‑time state mirroring between primary and standby controllers

Product Details

The KUC755AE105 3BHB005243R0105 is a dedicated redundancy link interface developed for ABB AC800M controller within the 800xA DCS environment. As vital controller sync hardware, it establishes high‑speed optical channels to synchronize operating status, logic variables and I/O snapshot data between primary and standby control units.

This module relies on multi‑mode fiber for signal transmission, effectively isolating electromagnetic interference generated by power devices inside control cabinets. Compared with traditional electrical connection, optical transmission delivers higher anti‑interference performance and stable sync performance under heavy industrial field conditions. Hot‑swap capability allows field maintenance without shutting down the whole DCS system, minimizing production interruption risk for continuous‑flow manufacturing sites.

Once the primary CPU encounters hardware breakdown or communication failure, real‑time mirrored data transmitted through this redundancy link interface enables the standby controller to take over full control tasks instantly. Bumpless switch‑over keeps process running without loss of field production data. LED indicators on front panel clearly display link health status and fault hints, assisting maintenance staff to locate abnormal points rapidly during daily inspection and emergency troubleshooting.

It adopts standard rack‑mount structure and fits into AC800M controller cabinet slots directly. Widely deployed in power plant, petrochemical and large‑scale process industries that demand high system availability. It serves as key hardware for new DCS project deployment, control system upgrading and on‑site defective component replacement work.