PM864AK02 ABB AC 800M Redundant Processor Unit Technical Manual
Manufacturer: ABB
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Part Number: PM864AK02 3BSE018164R1
Condition：New with Original Package
Product Type: CPU Processors
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
ABB PM864AK02 Redundant Processor Unit
The ABB PM864AK02, also cataloged as the PM864A Central Unit, operates as a dedicated hardware component for executing deterministic control applications within System 800xA network platforms.
Suffix Breakdown & Model Matrix
The PM864AK02 (3BSE018164R1) serves as a complete redundant processor kit. Each package comprises two PM864A CPUs, two TP830 baseplates (115 mm width), one TK850 CEX-bus expansion cable, two TB807 ModuleBus terminators, one TK851 RCU-Link cable, and two memory backup batteries (4943013-6).
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PM864AK02 (3BSE018164R1) |
| Brand | ABB |
| Origin | Refer to Nameplate |
| Weight | 2.9 kg (Net) |
| Dimensions | 119 mm x 186 mm x 135 mm |
| Operating Temp | -20 deg C to +60 deg C |
| Power Consumption | ~12 W (per CPU) |
| Power Supply | 24 VDC (+/- 10%) |
| MTBF | > 500,000 hours |
Industrial Control and Firmware Compatibility
The PM864AK02 module utilizes high-speed RISC architecture to maintain deterministic execution of control logic across the AC 800M backplane bus. Firmware flash compatibility is strictly enforced within the 800xA engineering environment; operators must perform binary synchronization between the primary and secondary units to ensure seamless failover. The module architecture supports I/O density scaling via the ModuleBus, allowing for expanded local process interfacing. Profinet and EtherNet/IP connectivity are managed via the integrated 100 Mbps Ethernet ports, providing fixed-latency data exchange essential for synchronized control loops.
Frequently Asked Questions
Q: Can the PM864AK02 support hot-swapping during active process execution?
A: Yes, the module supports hot-swapping within a dual-CPU redundant configuration. The secondary unit must be synchronized with the primary application image before the physical replacement of a faulty module is initiated to prevent process interruption.
Q: How is the RCU-Link cable utilized in the redundant pair?
A: The TK851 RCU-Link cable provides the dedicated physical communication path for state synchronization between the two CPUs. Disconnection of this cable will result in a loss of redundancy and trigger a system alarm.
Field Installation Guidelines
- Baseplate Mounting: Secure the TP830 baseplates to a vibration-dampened DIN-rail. Ensure the baseplates are installed in a side-by-side orientation to facilitate the TK850 CEX-bus expansion.
- Backplane Termination: Install the TB807 ModuleBus terminators at the terminal end of the I/O bus chain. Unterminated buses generate reflection noise, causing intermittent communication loss.
- Grounding: Connect the chassis ground to the cabinet common earth point using a low-impedance conductor. Shielding for Ethernet and RS-232 communication lines must be bonded at the entry point to mitigate high-frequency interference.
- Power Wiring: Utilize the provided 3BSC840088R4 spare power plugs for the 24 VDC supply. Ensure the cable gauge is sufficient to minimize voltage drop over the run, maintaining the specified nominal 24 VDC at the processor terminals.