Redundant controller renewal
Used when procurement needs the defined dual-processor package, not just a visually similar CPU pair.
ABB PM866AK02 Redundant Processor Unit Kit
ABB PM866AK02 redundant processor unit
ABB PLC redundant processor kit
ABB PM866AK02 processor unit with warranty
Brand Name:
ABB
Model Number:
PM866AK02
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Product Details
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ABB PM866AK02 redundant processor unit
,ABB PLC redundant processor kit
,ABB PM866AK02 processor unit with warranty
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Product Description
ABB AC 800M Controller Hardware
PM866AK02 Redundant Processor Unit Kit
A complete ABB redundant PM866A processor package with two CPUs, two TP830 baseplates, the RCU/CEX links and one memory-backup battery per processor.
TypeRedundant Processor Kit
SystemAC 800M / System 800xA
FocusHigh Availability Control
BrandABB
Product Introduction
ABB PM866AK02, article 3BSE081637R1, is the redundant PM866A processor package for AC 800M. The kit contains two processor assemblies, two TP830 baseplates, the specified terminators and redundancy cables, plus two backup batteries for the CPU pair.
Core Specifications
| Model / article number | PM866AK02 / 3BSE081637R1 |
|---|---|
| Package configuration | Redundant processor kit |
| Processor type / clock | MPC866 / 133 MHz |
| Performance, 1,000 Boolean operations | 0.09 ms |
| Memory per processor | 64 MB |
| Redundant switch-over | Maximum 10 ms |
| Power supply | 24 VDC; permitted range 19.2–30 VDC |
Official Package Contents
| Processor units | 2 × PM866A CPUs |
|---|---|
| Baseplates | 2 × TP830, width 115 mm |
| ModuleBus terminators | 2 × TB807 |
| CEX-Bus expansion cable | 1 × TK850 |
| CPU redundancy link | 1 × TK851 RCU-Link cable |
| Memory-backup batteries | 2 × 4943013-6, one per CPU |
| License | Not included |
Redundant Wiring, I/O & Diagnostics
01Link the CPUs
Install TK851 between the two RCU-Link connectors and verify both processor status indications.
02Share the CEX-Bus
Connect both CPUs to the same CEX-Bus through TK850 or the approved BC810/BC820 arrangement.
03Use optical S800 I/O
Connect redundant CPUs to S800 I/O through optical ModuleBus and two TB840 units; do not use the electrical ModuleBus.
Applications & Fault Scenarios
Backup CPU not available
Check TK851 continuity, both baseplate supplies, firmware equality, project configuration and controller diagnostics.
CEX-Bus segment fault
Inspect TK850 or BC810/BC820, segment power and communication-interface LEDs; either processor must be able to control the expansion units.
Additional Specifications
| Internal battery backup time | At least 158 hours |
|---|---|
| Ethernet channels | 2 × RJ45 Control Network ports |
| Serial interfaces | COM3 RS-232C, 75–19,200 baud; isolated COM4 service port, 9,600 baud |
| ModuleBus capacity | Up to 96 I/O modules in single-CPU configuration; 84 in redundant configuration |
| Dimensions per processor (W × H × D) | 119 × 186 × 135 mm |
| Operating temperature | 0 to +55 °C (+32 to +131 °F) |
Official Documentation
- ABB — Compact Product Suite Hardware Selector — PM866AK02 Data SheetData sheet dated 2026-01-19 | Article 3BSE081637R1Open official ABB source
- ABB — ABB Ability System 800xA 6.1 — AC 800M Controller Hardware Product Guide3BSE036352-610 A | System version 6.1Open official ABB source
Amikon Service
Commercial supply support, separate from ABB technical documentation.
A responsive team for planned maintenance and urgent spare requirements.
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 Requested
XCPBDP00MI-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.
FAQ
What is included in PM866AK02?
Two CPUs, two TP830 baseplates, two TB807 terminators, one TK850 cable, one TK851 cable and two memory-backup batteries; no license is included.
How are the CPUs linked in PM866AK02?
Use the supplied TK851 RCU-Link cable. Both processors also connect to the same CEX-Bus.
Can the electrical ModuleBus be used with PM866AK02?
No. Redundant CPUs connect S800 I/O through optical ModuleBus and two TB840 units.
What is the switch-over time for PM866AK02?
ABB specifies a maximum of 10 ms, with process outputs frozen during the transfer.
How should PM866AK02 redundancy be commissioned?
Match firmware and application data, verify both baseplate supplies and bus links, confirm primary/backup health, then follow the site-approved test procedure.
What should be included in a PM866AK02 RFQ?
Provide the part number, quantity, destination, required date, machine/system model, firmware release, installed CEX/I/O arrangement and labels for both CPUs.
RFQ for PM866AK02
For a faster technical and commercial check, send the installed-part details before the requested ship date.
Email Miya Zheng- Part Number
- Quantity
- Destination
- Required Date
- Machine / System Model
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