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ABB PM851AK01 (3BSE066485R1) is an economical and compact controller unit belonging to the AC 800M family, primarily used in System 800xA DCS and standalone PLC applications. It is designed for medium-scale process control, water treatment, power auxiliary systems, and general industrial automation where high-end redundancy is not required.
Key Specifications
| Parameter | Details |
|---|---|
| Product Model | PM851AK01 |
| Order Number | 3BSE066485R1 |
| Manufacturer | ABB |
| Product Family | AC 800M (System 800xA) |
| Processor | 32-bit PowerPC MPC860 @ 24 MHz |
| Memory | 12 MB RAM (Application: ~6.25 MB), 2 MB Flash |
| Boolean Speed | 0.46 ms / 1000 operations |
| Communication | 1x 10 Mbit/s Ethernet (CN1), 2x RS-232 (COM3/COM4) |
| I/O Expansion | ModuleBus (max 24 I/O modules), 1x CEX bus |
| Power Supply | 24 V DC (19.2 – 30 V DC) |
| Redundancy | No CPU redundancy, single Ethernet |
| Operating Temp. | +5 °C to +55 °C |
| Mounting | DIN Rail (via TP830 baseplate) |
Note: Although the baseplate has two RJ45 ports (CN1/CN2), the PM851AK01 is restricted to using only CN1 for Ethernet communication; redundant Ethernet is not supported.
