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Application Scenarios
In a Taiyuan-based thermal power plant, the PM861AK02 serves as the redundant controller for the Boiler Protection System (BMS/FSSS). The primary CPU executes burner management logic and monitors flame scanners, while the standby CPU runs in lockstep synchronization. If the primary CPU faults due to a hardware failure or power glitch, the system automatically switches to the secondary CPU within <50 ms, preventing a boiler trip and ensuring continuous power supply to the grid.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | PM861AK02 (Order Code: 3BSE018160R1) |
| Product Type | Redundant Processor Unit Kit (AC 800M Series) |
| Processor | Motorola MPC860 32-bit RISC (133 MHz) |
| Memory | 16 MB RAM (Application: ~7 MB) + 2 MB Flash |
| Communication Ports | 2x RJ45 Ethernet (CN1/CN2) + 2x RJ45 Serial (COM3/COM4, RS-232/485) |
| Redundancy Link | RCPU-Link (via TK851 cable) + CEX-Bus for I/O synchronization |
| Supply Voltage | 24 V DC (19.2 – 30 V DC) |
| Power Consumption | ~6.0 W per CPU module |
| Switchover Time | <50 ms (Typical, bumpless transfer) |
| Operating Temperature | 0 °C to +55 °C (Industrial Grade) |
| I/O Expansion | Supports up to 84 I/O modules in redundant configuration (S800 series) |
| Dimensions (Single CPU) | 119 mm (W) x 186 mm (H) x 135 mm (D) |
| Mounting | DIN Rail (TS35) via TP830 Baseplate |
| Included in Kit | 2x PM861A CPU, 2x TP830 Baseplate, TK851 RCPU-Link cable, TK850 CEX cable, Terminators |
