Description
ABB PM891K02 – High‑performance AC 800M CPU kit for demanding 800xA control
The ABB PM891K02 is a high‑end AC 800M controller kit, typically used as the main CPU in large 800xA systems where fast execution, stable communications and long lifecycle support really matter. From my experience, plants pick the PM891 class when they need headroom for complex logic, extensive I/O counts, and multi-network connectivity without compromising scan times. You might notice that it drops into the standard AC 800M footprint and works hand‑in‑hand with S800 I/O, which keeps upgrades and expansions straightforward.
Order Placement Process and Guarantees
- Warranty: 365 days
- Lead time: 1 week if in stock; no more than 1 month at the latest
- Payment: 50% advance payment; full payment prior to delivery
- Shipping: FedEx, UPS, DHL
One thing I appreciate is how quickly these kits can be turned around when projects are under time pressure. We test before dispatch, and we package for industrial transit, so they arrive cabinet‑ready.
Key Features
- AC 800M high‑performance CPU kit: Built for large applications in 800xA; ideal when cycle determinism and throughput are priorities.
- Dual Ethernet interfaces: Two 10/100BASE‑T ports for plant/network segregation, HMI/SCADA, engineering access, or controllers in peer‑to‑peer.
- Service/maintenance port: A dedicated RS‑232C service port simplifies commissioning and diagnostics on site.
- Wide protocol ecosystem: PROFIBUS‑DP, Modbus, PROFINET, and others are supported via modular CI interface units, so you scale only what you need.
- 24 V DC power: Standard DC cabinet supply keeps wiring simple and consistent with the rest of AC 800M.
- S800 I/O integration: Works with ABB S800 I/O for flexible cabinet layouts and mixed signal types across long runs.
- Lifecycle & serviceability: Designed for long life in process industries; firmware and security updates are straightforward with Control Builder M and 800xA toolsets.
A maintenance supervisor told me, “We swapped to PM891 kits during a turnaround and immediately noticed shorter download times and smoother diagnostics—no drama.” That lines up with what I’ve seen in many cases.
Technical Specifications
| Brand / Model | ABB PM891K02 (AC 800M CPU kit) |
| HS Code | 8537.10 (Programmable control panels, ≤ 1,000 V) |
| Power Requirements | 24 V DC nominal (typically 19–30 V DC range) |
| Operating Temperature | 0 to +55 °C (cabinet installation, non‑condensing) |
| Communication Interfaces | 2 × 10/100BASE‑T (RJ45); 1 × RS‑232C service; fieldbus via CI modules (e.g., PROFIBUS‑DP, Modbus, PROFINET) |
| Signal I/O Types | No direct onboard I/O; uses ABB S800 I/O modules for DI/DO/AI/AO and specialty signals |
| Installation Method | DIN‑rail via AC 800M baseplate (TB850 series); front‑access terminals and service port |
| Dimensions & Weight | Standard AC 800M CPU module form factor (fits one CPU slot; compact cabinet footprint) |
Related and Supporting Products
- ABB PM865K01 / PM866 / PM864 – Alternative AC 800M CPUs with different performance tiers; PM891K02 typically offers higher processing headroom.
- TB850 baseplate – Baseplate for AC 800M CPU installation and power distribution on DIN rail.
- CI854A (PROFIBUS‑DP) – Communication interface for connecting PROFIBUS devices and S800 remote I/O over DP.
- CI871 (PROFINET) – Interface for PROFINET IO connectivity to field devices and drives.
- S800 I/O (e.g., DI810, DO810, AI810, AO810) – Modular remote I/O family used with AC 800M for mixed signal types.
If you’re replacing an older AC 800M CPU, PM891K02 often shortens scan times and download cycles, while keeping existing S800 I/O and most cabinet wiring intact. That’s usually the easiest upgrade path.
Installation & Maintenance
- Cabinet & environment: Mount on DIN rail in a clean, dry, well‑ventilated enclosure. Keep ambient within 0–55 °C and avoid vibration hotspots.
- Power & grounding: Use a regulated 24 V DC supply with proper protective earth. Keep network and power wiring separated to reduce noise.
- Networking: Segment control and service networks where possible. Use industrial‑grade switches; set fixed IPs and document them.
- Firmware & backups: Keep the firmware aligned with your 800xA/Control Builder M version. Back up the application to secure storage before any upgrade.
- Routine service: Visually inspect connectors quarterly, clean dust with dry air, verify time sync and diagnostics, and review event logs for early warnings.
- Spares strategy: In most cases, one spare CPU kit per critical area is sufficient; test it annually to avoid surprises.
Quality & Certifications
- Certifications: CE compliant; UL/cUL industrial control; RoHS and REACH aligned for material compliance.
- Manufacturing: Built under ISO 9001 quality systems.
- Warranty: 365‑day warranty; units are function‑tested prior to shipment.
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