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ABB / AC 800M
PM864AK02
Redundant Processor Unit
ARTICLE NUMBER
3BSE018164R1
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CLASSIC AC 800M PROCESSOR PLATFORM
Dual PM864A Architecture
A redundant processor package built around two PM864A CPU units, with coordinated redundancy connection through the supplied TK850 CEX-bus expansion cable and TK851 RCU-Link cable.
96 MHz 32 MB RAM CPU REDUNDANCY
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PACKAGE STRUCTURE
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PROCESSING
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REDUNDANCY
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MECHANICAL
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PACKAGE CONTENT
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REDUNDANT PACKAGE
PM864AK02
The K02 designation identifies the redundant processor package. It contains two PM864AK01 processor units and the dedicated interconnection components required to establish the redundant arrangement. The package therefore should not be treated as a single 64 MB CPU. Each PM864A retains its own 32 MB memory resource and application capacity. |
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| Model | Configuration | Clock | RAM | Redundancy |
| PM864AK01 | Single PM864A | 96 MHz | 32 MB | No paired CPU |
| PM864AK02 | 2 × PM864A | 96 MHz each | 32 MB each | Yes |
| PM862K02 | Redundant PM862 | 67 MHz | 32 MB | Yes |
| PM866AK02 | Redundant PM866A | 133 MHz | 64 MB | Yes |
For replacement planning, the PM864A belongs to the classic AC 800M controller generation. ABB identifies PM862 as one of the newer controller families available as a replacement path for PM861A and PM864A, with the newer architecture adding capabilities such as BC820 support for distributed redundancy up to 200 m. When replacing a redundant controller, the two processor modules in the redundant pair must be of the same type.
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04 / INTEGRATION LOGIC
Built Around Controller Continuity
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05 / COMMERCIAL SUPPORT
PM864AK02 Inquiry & Order Support
For an ABB PM864AK02 inquiry, please provide the exact part number, required quantity, destination, required date, and the machine or control-system application. This helps confirm the intended redundant configuration and package requirements.
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AMIKON SALES MANAGER
Miya Zheng
Direct Contact
✉ sales@amikon.cn ◈ WhatsApp: +86 180 2077 6792
Please include Part Number, Quantity, Destination, Required Date and Machine/System when requesting a quotation.
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AFTER-SALES
Return & Replacement
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1. Please contact us within 7 days if you have any question after you receiving the items.
2. The returned items has to be in its original condition, with a specific reason for the return. We will issue a return or replacement for your order after we received the returns.
3. The buyer is responsible for all the shipping cost incurred.
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01
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Can PM864AK02 be treated as two independent PM864A controllers?
PM864AK02 is specifically a redundant processor-unit package. It contains two PM864AK01 assemblies together with TK850 and TK851 interconnection components. The two PM864A units are intended to operate as a redundant pair rather than as two unrelated controller installations.
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02
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Does PM864AK02 provide 64 MB of shared application RAM?
No. Each PM864A processor has 32 MB RAM, with 23.522 MB available for application use in the stated AC 800M configuration. The redundant pair does not turn the two memory areas into one 64 MB shared-memory resource.
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03
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What should be checked when replacing a PM864AK02 redundant pair?
The replacement arrangement should preserve the intended redundant architecture and compatible processor pairing. ABB specifies that both PM modules in a redundant pair need to be of the same type. The installed AC 800M version, associated communication interfaces, application requirements and existing interconnection arrangement should therefore be checked before substitution.
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04
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Why does a PM864AK02 quotation need to distinguish the K02 package from PM864AK01?
The two designations represent different purchasing configurations. PM864AK01 is a single PM864A processor-unit package, while PM864AK02 is the redundant package containing two PM864AK01 units plus the TK850 CEX-bus expansion cable and TK851 RCU-Link cable. Matching the exact designation helps avoid supplying a single CPU package when a redundant assembly is required.
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05
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Is PM864AK02 still suitable when a project is being migrated to a newer AC 800M controller family?
PM864AK02 belongs to the classic PM864A generation. ABB identifies newer controller families including PM862 and PM866A as replacement options for the PM861A and PM864A generation. A migration should be evaluated against the installed 800xA version, redundancy topology, communication interfaces, application requirements and the target controller capabilities rather than by processor speed alone.
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