Description

The PM857K02 (Product ID: 3BSE088386R1) is a high-reliability hardware controller kit engineered as a core processor node for the AC 800M hardware selection lineup within the ABB Ability System 800xA platform. This control assembly executes application logic, manages real-time clock task planning, and processes mathematical field calculations for small to medium-scale processing stations. The PM857K02 3BSE088386R1 package includes two PM857K01 processor units to enable high-availability processor redundancy, alongside specialized interconnection hardware such as a TK850 CEX-bus expansion cable and a TK851 RCU-Link cable. Each integrated processor board hosts an internal microprocessor, RAM allocations, LED system diagnostic indicators, an INIT push button, and a dedicated CompactFlash interface slot. For interface communications, the base controller hardware incorporates two RJ45 Ethernet network ports (CN1, CN2) designated for main Control Network drops, one RS-232C serial port (COM3) with full modem control lines, and one isolated serial port (COM4) dedicated for local configuration tool attachment. It supports up to a maximum of 128 physical input/output signals and offers complete Safety Integrity Level (SIL3) capabilities when combined with an auxiliary SM812 safety module and certified software scripts.

Features

• Complete redundant processing package containing two PM857K01 safety units, one TK850 CEX-bus cable, and one TK851 RCU-Link cable.
• Integrated high-availability network support spanning dual RJ45 Ethernet ports and dual serial communication options.
• Onboard local data logging and file processing handled via a built-in standard CompactFlash memory card interface.
• Upgradeable architecture enabling up to SIL3 high-integrity safety functions via the attachment of an external SM812 module.
• Strict physical I/O control boundaries allowing accurate, deterministic calculation for up to 128 field channels.

Applications

• High-availability process control setups requiring redundant CPU hot-standby switching over RCU-Links.
• Combined critical safety control loops and business-essential automation tracking hosted within a unified environment.
• Marine engine monitoring, distributed pumping stations, and isolated chemical utility deployment skids.

Ordering Information

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Module Base Mounting: Firmly fix the primary controller baseplate onto a stiff, grounded industrial back panel layout. Tighten all grounding terminals securely to minimize common-mode high-frequency noise interference.
• Redundancy Cable Interconnection: Attach the included TK851 RCU-Link cable securely between the two adjacent PM857K01 unit bodies to establish the real-time background memory synchronization link.
• CEX-Bus Expansion Mapping: Bridge external interface extensions into the system path by clicking the included TK850 CEX-bus expansion cable directly onto the designated bottom cluster terminal block.
• Convection Cooling Clearances: Ensure an unobstructed clearance space of no less than 50 mm above and underneath the processor assemblies to guarantee passive vertical air convection draft loops.

Compliance and Certifications