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      ABB PM891K01 3BSE053241R1
      ABB PM891K01 3BSE053241R1

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      Processor unit

      PM891K01 3BSE053241R1

      Product Information:

      450 MHz processor unit with 256 MB RAM and 208.985 MB available for the application. Supports CPU redundancy with a maximum 10 ms switch-over. Provides 2 Ethernet channels and supports 12 CEX-Bus communication modules.


      Product image is representative; revision or series may vary. Contact us to request a specific version.
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        • PRODUCT OVERVIEW

          What is this product?

          ABB identifies PM891K01 3BSE053241R1 as a 450 MHz PM891 processor unit in the AC 800M controller family. It provides 256 MB RAM, including 208.985 MB available for the application, and uses the MPC8270 processor architecture documented by ABB. The unit supports 2 Ethernet channels, up to 12 CEX-Bus communication modules and maximum 84 non-redundant or 84 redundant i/o modules. CPU redundancy and a maximum 10 ms switch-over are supported in a correctly engineered pair. Selection must be based on the complete 3BSE053241R1 article number, CPU type, control-software version and installed bus configuration.

          Source boundary

          Technical values are taken from ABB AC 800M controller and processor-unit documentation. Final compatibility is confirmed against article number 3BSE053241R1, the installed controller nameplate and the project hardware configuration.
        • APPLICATIONS

          Where it may be used

          The following contexts apply only after PM891K01 3BSE053241R1, its software level, bus layout and redundancy design have been verified.

          Large application execution

          Run a verified control project with 256 MB RAM and the highest listed CPU performance.

          High-density communication controller

          Coordinate a complex CEX-Bus interface set in an approved architecture.

          Redundant PM891 process node

          Maintain paired processors with the documented data and control RCU links.

          Eighty-four-module I/O backbone

          Serve the stated ModuleBus capacity without relying on an electrical local cluster.
      Technical specifications for

      PM891K01 3BSE053241R1

      0 TECHNICAL PARAMETERS
      • Manufacturer:
        ABB
      • Product Category:
        DCS Systems
      • Product type:
        Processor unit
      • CPU module:
        PM891
      • Clock frequency:
        450 MHz
      • Memory (RAM):
        256 MB
      • RAM available for application:
        208.985 MB
      • Processor type:
        MPC8270
      • High Integrity controller:
        No
      • Flash storage for application and data:
        Yes
      • CPU redundancy support:
        Yes
      • Redundant switch-over time:
        Maximum 10 ms
      • Performance, 1000 Boolean operations:
        0.043 ms
      • Power supply:
        24 VDC (19.2 to 30 VDC)
      • Power consumption, typical / maximum:
        660 / 750 mA
      • Typical power dissipation:
        15.8 W
      • Ethernet channels:
        2
      • Communication modules on CEX-Bus:
        12
      • ModuleBus I/O capacity:
        maximum 84 non-redundant or 84 redundant I/O modules
      • Stock Availability:
        14
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      BUYER INFORMATION

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      Commercial details are confirmed in writing before payment.
      • 01

        Factory Sealed

        Unused product with the original factory seal intact; packaging age or storage marks may still be present.

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      • 02

        Original Pack

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      • 03

        Factory New

        New and current product sourced through the manufacturer or authorized supply channel when expressly confirmed in the quotation.

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      Alternative Names

      PM891K01 3BSE053241R1 PM891K01 3BSE053241R1 PM891 processor unit

      Information

      Overview Manuals Architecture RCU Data and Control Links Power and ModuleBus

      Features:

      • 450 MHz PM891 processing with 256 MB RAM and 208.985 MB available for application execution
      • 2 integrated Ethernet channels plus support for 12 CEX-Bus communication modules in the documented controller layout
      • Redundant CPU operation with maximum 10 ms switch-over and maximum 84 non-redundant or 84 redundant i/o modules through the verified ModuleBus arrangement
      ABB identifies PM891K01 3BSE053241R1 as a 450 MHz PM891 processor unit in the AC 800M controller family. It provides 256 MB RAM, including 208.985 MB available for the application, and uses the MPC8270 processor architecture documented by ABB. The unit supports 2 Ethernet channels, up to 12 CEX-Bus communication modules and maximum 84 non-redundant or 84 redundant i/o modules. CPU redundancy and a maximum 10 ms switch-over are supported in a correctly engineered pair. Selection must be based on the complete 3BSE053241R1 article number, CPU type, control-software version and installed bus configuration.

      Technical values are taken from ABB AC 800M controller and processor-unit documentation. Final compatibility is confirmed against article number 3BSE053241R1, the installed controller nameplate and the project hardware configuration.

      The ABB PM891K01 3BSE053241R1 AC 800M processor unit is supported by Moore Automated for verified industrial replacement and spare-part requirements.
      ABB PM891K01 3BSE053241R1 AC 800M processor unit manual(Datasheets), Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

      PM891 Processing Architecture

      PM891 provides 450 MHz processing, 256 MB RAM and 208.985 MB available for the control application.

      RCU Data and Control Links

      A redundant PM891 arrangement uses separate RCU data and control links; verify both cables, terminators and partner identity.

      Power and ModuleBus Constraints

      Confirm the higher 24 VDC current demand and the optical ModuleBus architecture because PM891 does not support the electrical local ModuleBus.

      Technical notes

      PM891K01 3BSE053241R1 is an ABB AC 800M processor unit built around the PM891 CPU, with a 450 MHz clock, 256 MB RAM and 208.985 MB available for the control application. ABB documents 2 Ethernet channels, 12 supported CEX-Bus communication modules, CPU redundancy with a maximum 10 ms switch-over, a 24 VDC supply and IP20 construction. Replacement engineering must verify article number 3BSE053241R1, firmware and control-system version, the ModuleBus/CEX-Bus layout and every redundant-partner detail before installation.

      PM891K01 High-Performance Unit Validation

      Confirm the complete PM891K01 3BSE053241R1 identity, article number 3BSE053241R1, PM891 nameplate, CPU or hardware revision, processor-unit kit contents and the installed redundant controller arrangement. If any marking is unclear, provide close photos of the front label, side label and connections.

      PM891 System Quote Requirements

      For an accurate quotation, provide quantity, the complete PM891K01 3BSE053241R1 and 3BSE053241R1 identity, nameplate photos, controller software version, CEX-Bus and ModuleBus configuration, redundant partner details, receiving country and required delivery date. Moore Automated will use these records to match the exact processor unit.

      Customs & shipping dimensions / weight

      • Packed shipping dimensions
        Confirmed after final packing
        Approx. 17.4 x 18.6 x 9.4 cm
      • Packed shipping weight
        Confirmed after final packing
        Approx. 1.60 kg
      • HS / customs code
        Indicative HS code 85371091
        Final destination-specific classification requires customs confirmation
      • Country of origin
        Sweden
        Confirmed from ABB product documentation
      • Ships from
        Xiamen, Fujian, China
        Dispatch location confirmed in the written quotation
      • Customs documents
        Confirmed for the destination
        Available document scope stated in the written quotation
      PRODUCT & ORDER FAQS

      Questions buyers ask about PM891K01 3BSE053241R1

      • Does PM891K01 3BSE053241R1 already contain a redundant CPU pair?

        No. PM891K01 is one PM891 processor unit. The CPU supports redundancy, but a redundant order is PM891K02, which contains two PM891K01 units and the specified RCU data/control link cables. Do not treat one K01 unit as a complete redundant set.

      • Can I choose DHL, FedEx, or UPS for my PM891K01 order, or use my own courier account?

        Please provide the delivery country and postcode, preferred courier and whether freight should use your own collect account. PM891 has no built-in backup battery, but any separately ordered SB822 battery accessory must be declared. Moore will compare the available DHL, FedEx, UPS or requested service after the exact packed set is confirmed.

      • Can a cabinet with a local electrical ModuleBus be moved directly to PM891K01?

        No. ABB lists no electrical ModuleBus support for PM891. Its local I/O arrangement is optical, with up to seven optical clusters and up to 84 I/O modules. A system using an electrical local cluster needs an I/O-architecture review before PM891 migration.

      • Is the 450 MHz PM891 a plug-in performance upgrade for a PM866 or PM864 controller?

        Not solely on processor speed. PM891 uses a different processor platform, 10/100 Mbit/s Ethernet, different dimensions and different redundancy-link hardware. The 800xA software release, compiled application, CEX modules, optical I/O layout and partner CPU must all be checked as a migration project.

      • What information should I send if I need warranty support for my PM891K01?

        Photograph the PM891K01 and 3BSE053241R1 labels, serial number, connectors and received condition before installation. Moore Automated provides a one-year independent-supplier warranty; if support is required, include the 24 VDC supply record, CPU indications and controller-software context so a hardware fault can be separated from migration or configuration issues.

      • How should the 24 VDC supply be sized for a PM891 installation?

        ABB specifies 660 mA typical and 750 mA maximum at 24 VDC for the processor, with 15.8 W typical dissipation. Size the supply and cabinet cooling from the maximum CPU demand plus the separate CEX-bus and connected-module loads; do not reuse a lower-power CPU allowance without recalculation.

      • Can an existing COM3 serial device be connected to PM891K01?

        No. PM891 does not support COM3. ABB lists only the isolated COM4 service-tool interface at 9600 baud. An application that currently depends on a general RS-232C channel needs a compatible communication module or another engineered interface.

      • What must an available PM891K01 unit include before stock is accepted?

        Ask for photographs confirming PM891K01 and 3BSE053241R1, plus the supplied TB850 CEX-bus terminator and TB853 RCU control-link terminator. The standard processor package does not imply a control-software license, redundant partner, TK855/TK856 cables or BC810K02.
      All FAQ
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          • Product Lifecycle Stage

            Active / Available from OEM

            ABB lists PM891K01 as an active high-performance AC 800M processor unit. Moore Automated supplies verified ABB processor units and controller spares; PM891 identity, power demand, CEX-Bus/ModuleBus limitations, software and redundant hardware are checked to reduce downtime.

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          Moore Disclaimer: Moore Automated's sales automation equipment and related solutions are intended for industrial automation and business operational efficiency improvement purposes only. Product information, technical parameters, and application cases are for reference only and do not constitute an absolute guarantee of performance for any specific industry, scenario, or final application. Actual equipment performance may vary depending on factors such as the usage environment, system integration method, and maintenance conditions. Users should confirm compatibility and safety based on professional technical assessments. Moore Automated assumes no liability for any direct or indirect losses caused by improper use, modification, or failure to operate according to specifications, to the extent permitted by law.

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