ABB PM891K02 3BSE053242R1 Redundant Processor Unit

Overview

The PM891K02 Processor Unit is a robust monolithic unit designed for high-performance control applications. Featuring a powerful MPC8270 processor and 256 MB memory, the PM891 is equipped with redundant Ethernet ports, a real-time clock, and an array of communication interfaces including two RJ45 Ethernet ports (CN1, CN2), a serial port (COM4), and a communication expansion bus (CEX-Bus) for flexible system integration.

Features & Benefits

• High Availability: Redundant Ethernet communication ports, ensuring system uptime and reliability.
• Modular Design: Supports step-by-step expansion, allowing for tailored solutions to meet specific requirements.
• Built-in EMC Certification: The controller complies with full EMC standards for industrial environments.
• I/O Flexibility: Connect up to 84 I/O modules with up to seven optical I/O clusters per unit.
• Simple Fault Diagnosis: Advanced diagnostic features and LED indicators for quick fault identification.
• No Internal Battery: For simplified maintenance and a reliable power supply with redundant options.

Technical Specifications

• Model Number: PM891K02
• Processor: MPC8270
• Clock Frequency: 450 MHz
• Memory: 256 MB (208.985 MB available for application)
• Flash Memory: 16 MB for firmware storage
• Power Supply: 24 V DC (19.2-30 V DC), Power consumption: 660/750 mA (typ/max)
• Real-Time Clock Stability: 50 ppm (approx. 0.5 hours/year)
• Ethernet Ports: 2 x 10/100 Mbit/s Ethernet
• Serial Port (COM4): Opto-isolated, 9,600 baud, for service tool connection
• Communication Expansion Bus (CEX-Bus): Allows for up to 12 communication modules and redundancy
• Temperature Range: Operating: +5°C to +55°C, Storage: -40°C to +70°C
• Vibration Resistance: Up to 0.5 g acceleration
• Dimensions: 174 mm (W) x 186 mm (H) x 94 mm (D)

FAQ

1. What is the PM891 Processor Unit’s maximum power consumption?
2. The PM891 consumes 660 mA (typical) and 750 mA (maximum) at 24 V DC.
3. How does the redundancy work in the PM891?
4. The unit supports redundant Ethernet communication ports and CEX-Bus, ensuring higher availability and fault tolerance.
5. What is the maximum number of I/O modules supported by the PM891?
6. The unit supports up to 84 modules on the Modulebus, with 7 optical I/O clusters.

For more detailed information, please check official datasheet: Product-PM891K02