ABB PM858AK01 PLC Processor Unit,

Product Overview

The ABB PM858AK01 is a high-performance processor unit designed for the AC 800M control system. Introduced in hardware platform version 6.0.2, it utilizes an MPC860 RISC microprocessor to deliver reliable logic execution. This unit is optimized for single-processor configurations and provides a robust foundation for distributed control tasks.

Technical Specifications

• Manufacturer: ABB

• Model: PM858AK01

• Processor: MPC860 RISC, 48 MHz

• Memory: 16 MB SDRAM; 2 MB Flash PROM

• Battery Backup: 36 hours (Internal); up to 3 weeks with external SB821

• I/O Capacity: Up to 12 S800 I/O units (via electrical ModuleBus)

• Ethernet Ports: 2x 10Base-T (CN1, CN2)

• Serial Ports: COM3 (RS-232C, modem support), COM4 (Isolated for service tool)

• Power Supply: 24 V DC (19.2–30 V DC range)

• Dimensions: 119 mm (W) x 186 mm (H) x 135 mm (D)

• Weight: 1200 g

Key Features

• Advanced Processing: The 48 MHz RISC processor ensures efficient handling of complex automation routines and high-speed data throughput.

• Flexible Data Retention: 16 MB of battery-backed SDRAM preserves application data during power loss, with options for significantly extended backup via external battery modules.

• Integrated Connectivity: Features dual Ethernet ports for control network communication and dedicated serial ports for peripheral devices and maintenance tools.

• Local I/O Management: Directly interfaces with up to 12 S800 I/O modules through the integrated electrical ModuleBus, streamlining the control architecture.

• Industrial Reliability: Designed with a 24V DC input range and low power dissipation (6 W typical) to thrive in demanding industrial environments.