ABB PM864AK01 (3BSE01816R1) – High-performance AC 800M CPU kit for demanding process control

The ABB PM864AK01 is a powerful controller CPU for the AC 800M platform, typically selected when plants need fast cycle times, reliable networking, and smooth integration with ABB 800xA/Control Builder M. It slots into the standard AC 800M base unit and works with S800/S900 I/O and CEX-bus communication modules, so expanding or modernizing an existing ABB system usually stays straightforward and low-risk.

Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express: FedEx, UPS, DHL

Key Features

• AC 800M performance tier. Designed for mid‑to‑large applications that need faster scan times and stable control in continuous or batch processes.
• Dual Ethernet for control and service. Typically 2x 10/100Base‑T ports for controller network, engineering access, and integration with 800xA.
• Redundancy-ready architecture. Can be deployed in redundant CPU configurations in many cases to boost availability and reduce switchover risk.
• Memory card support. Removable storage for application backup and firmware, which makes version management and recovery more practical onsite.
• CEX-bus expansion. Add fieldbus modules (e.g., PROFIBUS DP) without changing the controller footprint.
• Works with S800/S900 I/O. No onboard I/O on the CPU itself—process signals are handled via distributed I/O families that are widely used in ABB systems.
• Industrial temperature range. Suitable for control cabinets in typical plant rooms; in most cases a 0–55°C operating window.
• Tight time sync and RTC. Supports plant time synchronization methods commonly used in 800xA environments; RTC is battery-backed.

Technical Specifications

Commonly Paired Components

• TB850 base unit. Standard baseplate for PM8xx CPUs; provides power and backplane connectivity on DIN rail.
• SB821 battery unit. Battery-backed real-time clock and memory retention for planned shutdowns.
• CI854A (CEX) PROFIBUS DP-V1 interface. Adds redundant/standard DP networks for drives, MCCs, and remote I/O.
• S800 I/O modules (e.g., DI810, AI810, DO810, AO810). Robust distributed I/O widely used across ABB process installations.

Application Fields

From my experience, PM864AK01 is a safe pick when you need headroom for sequence control, data exchange, and historian traffic without sacrificing scan time. You’ll see it in:

• Oil & Gas – unit control, compressor packages, and terminal automation with PROFIBUS/Modbus equipment
• Chemical & Petrochemical – batch sequencing, recipe handling, interlock logic
• Power Generation – auxiliary systems, water-steam balance, and balance-of-plant control
• Water & Wastewater – filter lines, blower control, and distributed pumping stations
• Pulp & Paper / Mining – drive coordination, process interlocks, and condition monitoring gateways

A maintenance lead told us, “We migrated a PM851 to a PM864AK01 to gain Ethernet bandwidth and keep the logic responsive. The switchover took under half a shift and stayed within our planned downtime.”

Advantages & Value for Procurement

• Reliability: Proven AC 800M hardware with redundancy options and long MTBF—sensible for plants chasing fewer nuisance trips.
• Compatibility: Drop-in fit with existing ABB cabinets, S800 I/O, and 800xA; usually no cabinet redesign or rewiring of I/O.
• Lifecycle economy: Extend system life without full rip-and-replace; spare parts strategy is simpler and typically cheaper long-term.
• Networking flexibility: Dual Ethernet plus CEX-bus modules mean you can standardize on PROFIBUS/Modbus while keeping an upgrade path.
• Supportability: Clear firmware/software alignment with 800xA; versioning and backups via memory card help maintenance teams.

Installation & Maintenance

• Cabinet & mounting: DIN-rail in a clean, dry cabinet (IP54 or better recommended). Allow airflow above/below the module; avoid heat sources.
• Power & grounding: 24 V DC supply via the AC 800M base/power module. Use a dedicated DC feeder, proper protective earth, and segregate signal and power cabling.
• Networking: Shielded CAT5e/6 for control Ethernet; keep redundant paths physically separated where possible. Label CEX-bus modules for quick swap.
• Environmental limits: Typically 0–55°C, 5–95% RH non‑condensing. If enclosure temperature runs high, add forced ventilation.
• Routine tasks: Back up application and firmware to the memory card, review diagnostics in 800xA, dust the cabinet, and check connectors annually.
• Battery care: Replace the SB821 battery on the recommended interval (often 3–5 years, site-dependent) and log the date on the cabinet.
• Firmware management: Align firmware with your 800xA/Control Builder M version. Test changes offline when possible before deploying to the live pair in redundant systems.

Quality & Certifications

• CE compliant
• cULus Listed (industrial control equipment) – model-dependent marking
• RoHS compliant
• Manufactured under ISO 9001 quality systems
• Manufacturer’s standard warranty applies; supply covered by our 365-day warranty

Quick Buying Notes

You might notice that PM864AK01 is often chosen as a balanced upgrade in 800xA sites—enough CPU and networking without pushing cabinet changes. If you’re planning a redundant pair or adding CEX modules like PROFIBUS DP, share your current firmware and 800xA version; matching those early usually saves one extra visit.