ABB PM861AK02
Product Name
ABB PM861AK02 Redundant Processor Unit Kit (AC 800M Series, System 800xA Compatible)
Product Description
The ABB PM861AK02 (3BSE018160R1) is a redundant CPU kit for the AC 800M controller family, engineered for mission-critical industrial automation in power generation, petrochemical, and process industries. It includes two PM861A CPUs, TP830 baseplates, CEX-bus/RCU-Link cables, and ModuleBus terminators to enable active/standby redundancy with automatic failover, ensuring high availability and zero unplanned downtime. Built on a 48 MHz processor with 16 MB RAM, it executes complex control logic, real-time data acquisition, and seamless integration with System 800xA HMIs/SCADA and distributed I/O modules. Its rugged industrial design withstands harsh environments, while built-in diagnostics and hot-swappable capability simplify maintenance and reduce operational risk.
Product Parameters
| Parameter Category | Specific Parameter |
|---|---|
| Ordering Code | PM861AK02 (3BSE018160R1) |
| CPU Configuration | 2x PM861A CPUs (redundant pair) |
| Processor Core/Clock | 48 MHz industrial CPU |
| Memory | 16 MB RAM (application RAM ~7.15 MB typical) |
| Power Supply | 24 V DC (19.2–30 V DC, redundant input recommended) |
| Power Dissipation | ~10 W max per CPU; ~20 W typical for the kit |
| Operating Temperature | -20 °C to +60 °C (ambient, cabinet-mounted) |
| Storage Temperature | -40 °C to +85 °C |
| Redundancy | Active/standby auto-failover, RCU-Link synchronized |
| Communication Buses | ModuleBus, CEX-bus (for I/O expansion) |
| Protection Class | IP20 (cabinet-mounted) |
| MTBF | ≥ 200,000 hours (typical for redundant pair) |
Specifications
Mechanical Specifications
- Dimensions (Kit, typical): 119 mm (W) × 186 mm (H) × 135 mm (D)
- Installation: 35 mm DIN rail, TP830 baseplates (115 mm width)
- Weight: ~2.9 kg (kit, incl. CPUs, baseplates, cables, terminators)
- Housing: Flame-retardant plastic (UL94 V-0)+metal shielding
- Connectors: ModuleBus backplane, CEX-bus/RCU-Link, battery backup
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