ABB PM864AK023BSE018164R1 Redundant Processor Unit

Product Description

Configured for deterministic controller execution in ABB AC 800M control networks, the PM864AK02 (base model PM864A Central Unit) provides direct physical and electrical execution of cyclic control tasks through redundant processor architecture.

Hardware Specifications

Backplane Bus Communication Velocity and Firmware Flash Compatibility

The PM864AK02 utilizes the CEX bus expansion interface to maintain deterministic data exchange with connected I/O modules. Firmware flash compatibility is strictly bound to the AC 800M hardware revision level; mismatched firmware versions will prevent processor synchronization. The RCU-Link cable ensures redundant processor pairs maintain sub-millisecond state synchronization without data loss during switchover events.

Frequently Asked Questions

Q: What is the minimum number of PM864A units required to establish redundancy?

A: Two PM864A units are mandatory to form a redundant processor pair. Single-unit operation disables automatic switchover capability.

Q: Is hot-swap supported for the PM864AK02 CPU modules?

A: Hot-swap is not permitted under load. The controller must be powered down before removing or inserting CPU modules to prevent backplane communication faults.

Q: How many spare power plugs are included in the kit?

A: One spare power plug (3BSC840088R4) is supplied per CPU, totaling two units for a redundant configuration.

Field Installation Guidelines

Mount the PM864AK02 on a DIN rail-compatible enclosure with adequate spacing to ensure ventilation around the heat sink surfaces. Secure the TP830 baseplates firmly to prevent mechanical stress on the backplane connectors. Use shielded twisted-pair cables for all CEX bus and RCU-Link connections, grounding the shield at one end only. Verify battery orientation before insertion to avoid reverse polarity damage. Ensure all modulebus terminators (TB807) are installed at both ends of the modulebus segment to suppress signal reflection.

Other Attributes

• Series: Advant DCS/800xA
• Country of Origin:  Germany/Sweden/Finland
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of ABB

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