High-availability controller renewal
Appropriate where the installed BOM calls for the complete redundant package rather than an isolated replacement CPU.
ABB PM891K02 Redundant Processor Unit Kit
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Detailed Product Description
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ABB AC 800M Controller Hardware PM891K02 Redundant Processor Unit KitA factory-defined redundant PM891 package with two processor units plus separate data, control and CEX-Bus interconnection cables. TypeRedundant Processor Kit SystemAC 800M / System 800xA FocusHigh Availability Control BrandABB Product IntroductionABB PM891K02, article 3BSE053242R1, is the redundant PM891 processor package for AC 800M. It combines two PM891K01 units with TK850V007, TK855 and TK856 cables. ABB states that BC810K02 is ordered separately when hot replacement is required. Core Specifications
Package Contents & Hot Replacement
Redundancy, Network & I/O Commissioning01Build both RCU links Connect TK855 and TK856 exactly as documented; the PM891 uses separate data and control redundancy paths. 02Connect the shared CEX-Bus Both processors must reach the same expansion bus through the specified cable or the engineered BC810 arrangement. 03Connect redundant S800 I/O Use optical ModuleBus and two TB840 units. The PM891 has no electrical ModuleBus connection. Applications & Fault ScenariosBackup not synchronizedCheck both RCU links, firmware alignment, application state and controller diagnostics before testing switch-over. Hot-replacement planningConfirm that the separately ordered BC810K02 and site procedure are in place; the package alone does not provide ABB hot replacement. Additional Specifications
Official Documentation
Amikon ServiceCommercial supply support, separate from ABB technical documentation. Part and package checks for planned redundant-controller work. Identity check Part number and visible condition reviewed. Test scope Available testing stated on the quotation. Packing & DOA Protective packing and prompt issue review. RMA & warranty Terms confirmed before the order is placed. Multi-brand Spare Parts Also RequestedXCPBDP00MI-B501AP-IV9907-028NXC1 NetAXS-123eTOP11-0050ML7421B1023ML7425A6008VS-4450EDSC318BRC-H700U1241B/U1242BAE2S-P01 These part numbers are independent purchasing references only. They are not replacements for the product on this page. Compatibility and stock must be confirmed separately for each item. FAQWhat is included in PM891K02?Two single-processor packages, one TK850V007 CEX-Bus cable, one TK855 data-link cable and one TK856 control-link cable. Is BC810K02 included with PM891K02?No. ABB states that it must be ordered separately when PM891 hot replacement is required. How are the redundant processors linked in PM891K02?Use both supplied links: TK855 carries RCU data and TK856 carries RCU control. How is S800 I/O connected to PM891K02?Through optical ModuleBus and two TB840 units. The processor has no electrical ModuleBus. Does PM891K02 have internal backup batteries?No. Use the approved external battery arrangement where retained-memory backup is required. What should be included in a PM891K02 RFQ?Provide the part number, quantity, destination, required date, machine/system model, installed BC810 arrangement, software release and clear labels for both processors. RFQ for PM891K02For a faster technical and commercial check, send the installed-part details before the requested ship date. Email Miya Zheng
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| Product Tags: ABB PM891K02 redundant processor ABB PLC processor unit kit ABB PM891K02 with warranty |
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