Description

The ABB KUC755AE105(manufacturer part number 3BHB005243R0105)is a high-end programmable logic controller(PLC)CPU module in the AC 800M family,serving as the central processing unit for ABB System 800xA distributed control systems(DCS)and integrated safety solutions.Designed for demanding applications in power generation,transmission,oil&gas,water,and mining,it delivers deterministic real-time control,hardware redundancy,and native support for industrial IT/OT convergence.

As the evolutionary successor to the PM866 series,the KUC755AE105 features a modern 64-bit ARM Cortex-A9 multicore processor,expanded memory,secure boot,and built-in firewall—making it suitable for both conventional process control and SIL 3 safety applications when used with ABB’s Safety Extension software and certified I/O.

Application Scenarios

At a European offshore wind farm substation,aging PM864 controllers struggled with IEC 61850 GOOSE messaging latency during grid faults.The operator upgraded to ABB KUC755AE105 CPUs in redundant AC 800M racks.The new system achieved<4 ms end-to-end GOOSE response—well within ENTSO-E requirements—and leveraged the module’s integrated OPC UA server to stream real-time breaker status to the cloud-based asset management platform.During a simulated fiber cut,redundant switchover occurred in 32 ms,preventing turbine tripping.The project qualified for EU green energy incentives due to enhanced grid compliance,directly enabled by the KUC755AE105’s performance and certification.

Key Parameters

Parameter Value/Description

Product Model KUC755AE105

ABB Catalog Number 3BHB005243R0105

Controller Family AC 800M(System 800xA)

Processor 64-bit ARM Cortex-A9 dual-core,1.0 GHz

Program Memory 1 GB DDR3 RAM,4 GB flash storage

Scan Performance~0.05µs per Boolean instruction(3×faster than PM866)

Redundancy Full hot-standby redundancy with sync via optical or copper link

Switchover Time<50 ms(typical:30–40 ms)

Integrated Ports 2×10/100/1000BASE-T Ethernet(RJ45):

–Port 1:Control network(PRP/HSR/MRP)

–Port 2:Engineering&diagnostics

Supported Protocols IEC 61850(GOOSE,MMS),Modbus TCP,OPC UA,Profinet IO,EtherNet/IP

Programming Standards IEC 61131-3(LD,FBD,ST,SFC),C/C++(via AC 800M Extended)

Functional Safety SIL 3 capable(per IEC 61508)with Safety Extension license and certified architecture

Operating Temperature 0°C to+60°C(extended:–25°C to+70°C with derating)

Mounting Plug-in module for AC 800M I/O base(e.g.,TB840/TB850)

Certifications CE,UL 61010-1,IEC 61850-3,IEEE 1613,EN 61000-6-2/6-4

Technical Principles&Innovation

Innovation Point 1:Unified Control&Safety Engine

The KUC755AE105 runs standard and safety logic on the same hardware(time-separated execution),eliminating the need for separate safety PLCs—reducing cost,footprint,and integration complexity.

Innovation Point 2:Cybersecurity by Design

Features secure boot,firmware signing,MAC/IP filtering,and OPC UA encryption—meeting NERC CIP,IEC 62443,and ISO 27001 requirements without external firewalls.

Innovation Point 3:Deterministic High-Speed Communication

Hardware-accelerated PRP/HSR enables zero-recovery-time networks for protection systems,while the integrated switch reduces external infrastructure.

Innovation Point 4:Future-Proof Software Stack

Supports ABB Ability™integration,remote firmware updates,and containerized analytics—extending the controller beyond traditional PLC roles.

Related Product Combinations

ABB TB840/TB850:I/O base units—required for KUC755AE105 mounting and power distribution.

ABB GCC960C103:High-speed Ethernet communication module—adds dual GbE ports with PRP/HSR offload.

ABB CI871:PROFINET IO controller module—complements KUC755AE105 in hybrid drive networks.

ABB TU811/TU831:S800 I/O modules—feed process data to the CPU for closed-loop control.

ABB Safety Extension:Software add-on—enables SIL 2/3 programming in Control Builder M.

ABB System 800xA 6.1+:Engineering&HMI platform—fully integrated configuration and diagnostics.

ABB REF620/REL670:Protection relays—communicate natively via IEC 61850 with KUC755AE105.

Installation,Maintenance&Lifecycle

Installation:Insert into TB840/TB850 base,connect redundancy sync cable(if used),and link Ethernet to control network.No jumpers or DIP switches—auto-configured via Control Builder M.

Maintenance:Diagnostics visible in 800xA Workplace(CPU load,memory usage,redundancy status).Firmware updates performed online via Engineering Studio.

Hot-Swap:Supported in redundant configurations—failed unit replaced without process interruption.

Lifecycle:ABB guarantees availability and support until at least 2035,with extended service options beyond.

As an ABB Authorized Value Provider,we supply only factory-new,sealed KUC755AE105(3BHB005243R0105)units with full traceability,pre-validation test reports,and global warranty.Each module undergoes thermal cycling and network stress testing before shipment.

Final Notes

The KUC755AE105 represents ABB’s strategic shift toward converged OT/IT control platforms—ideal for digital transformation projects requiring cybersecurity,cloud connectivity,and long-term scalability without sacrificing real-time performance or safety integrity.

✅Use Case Fit:New DCS builds,legacy PM86x upgrades,substation automation,integrated ESD/SIS,and smart infrastructure.

Contact us for genuine KUC755AE105 modules,migration planning from PM864/PM866,or bundled solutions with I/O,communication cards,and engineering services for your System 800xA deployment.

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