ABB 3BSE053241R1 PM891K01 Processor Unit

Technical Specifications

Model:3BSE053241R1(PM891K01)

Brand:ABB

Product Type:AC800M processor unit

CPU:MPC8270,450MHz

RAM:256MB

Flash:512MB

Power Supply:24VDC(19.2‑30VDC),redundant power support

Communication Interface:2×10/100M Ethernet,isolated RS‑232,CEX‑bus,RCU‑link for redundancy

Max I/O Capacity:7 optical clusters,support up to 84 S800 I/O modules

Package Includes:PM891 CPU,TB850 CEX‑bus terminator,TB853 RCU‑link terminator,without software license

Feature:Support full CPU hot‑standby redundancy,DIN rail mounting,front‑panel LED status indicator,on‑board fault diagnosis

System Compatibility:ABB AC800M controller,System 800xA DCS platform

Remark:Legacy EOL spare component;confirm system firmware version before replacement

Module Form:DIN‑rail integrated controller unit

Weight:2.10 kg

Dimension:245 mm×105 mm×280 mm

Protection Grade:IP20

Certification:CE

Working Temperature:5℃ ~ +60℃,non‑condensing

Storage Temperature:‑40℃ ~ +85℃

Humidity:5%‑95% non‑condensing

Application:Power plant,petrochemical,papermaking,metallurgy industry,as core control unit for AC800M system,execute control logic,process data calculation,I/O management,communication interaction,system overhaul and spare‑part replacement.

Product Details

3BSE053241R1,type PM891K01,is high‑end processor unit of ABB AC800M controller series,core hardware of System800xA DCS system.

It executes user control program,process field analog & digital signals,manages S800 I/O modules,completes data exchange via Ethernet and CEX‑bus. Supports CPU hot‑standby redundancy to improve system reliability. Equipped with TB850 and TB853 terminators inside the kit. Module failure will cause controller offline,loss of control logic and field output failure. Widely used for large‑scale process industry DCS site maintenance and spare‑part replacement.

Note:This is legacy EOL spare component,widely used for process industry spare‑part replacement.