Product Introduction

ABB PM865K01 is a safety-grade processor unit in the AC 800M PAC family, designed for System 800xA. It integrates a high-integrity CPU, baseplate, and termination unit, serving as the core controller for safety-critical processes (power, chemical, oil & gas). With SIL3 certification (IEC 61508), 1+1 hot-standby redundancy, and wide-temperature ruggedization, it ensures zero downtime and functional safety in harsh industrial environments.

Model Interpretation

PM: Processor Module (Processor Module)

865: AC800M High Integrity Security CPU Series

K01: Hardware version / Security configuration identifier, corresponding to order number 3BSE031151R1

Note: Not RoHS compliant; for spare parts only in pre-2017 systems. New projects use PM867K01.

Technical Parameters

Processor: PowerPC 96 MHz, ECC memory support

Memory: 32 MB RAM (22.184 MB user), 2 MB Flash, CF card slot

Safety Rating: SIL3 (IEC 61508), PL e (ISO 13849), TÜV certified

I/O Capacity: Up to 1,024 I/O points; 1 ms cycle time typical

Redundancy: 1+1 hot-standby, ≤ 20 ms seamless switch-over

Power Supply: 24 V DC (19.2–30 V DC); maximum 11.4 W

Operating Temperature: -25°C to +70°C; storage -40°C to +85°C

Humidity: 5% - 95% RH, non-condensing

Protection: IP20; conformal coated PCB for corrosion resistance

Dimensions (Width x Height x Depth): 119 x 186 x 135 mm

Weight: Approximately 1.2 kg (including base) Interface and Communication Configuration

Ethernet: 3 × 10/100 Mbps RJ45 (primary/backup/service)

Serial: 1 × RS-232 (maintenance), 1 × isolated RS-485 (115.2 kbps)

Expansion: CEX-Bus for S800 I/O and safety modules

Protocols: Modbus TCP, PROFINET IRT, PROFIsafe, OPC UA, IEC 61850 GOOSE

Isolation: 2,500 V AC isolation on all communication ports Core Functions

Executes safety-critical control logic and PID loops with SIL3 compliance

Performs high-speed data acquisition, historical logging, and safety parameter management

Supports system-wide safety alarm handling and comprehensive self-diagnosis

Enables 1+1 CPU hot-standby with bumpless switchover to eliminate single-point failures

Facilitates safety programming via Control Builder M (IEC 61131-3 + safety libraries)

Ensures data integrity with non-volatile RAM and Flash backup

Application Scenarios

Power Generation: Boiler control, turbine safety systems, BMS (Burner Management System)

Chemical & Petrochemical: Reactor safety, ESD (Emergency Shutdown), process interlock

Oil & Gas: Pipeline safety, wellhead control, fire & gas detection systems

Water Treatment: Critical pump control, chemical dosing safety interlocks

Metallurgy: Furnace safety, rolling mill emergency stop systems Operation and Maintenance Instructions

Install on standard DIN rail with adequate ventilation; avoid direct heat and vibration

Use shielded cables for all communication wiring; separate power and signal cables

Configure safety parameters and download programs via Control Builder M (safety mode)

Regularly check LED status (PWR/RUN/FAULT/COM) and connection integrity

The module has no user-serviceable parts; replace the entire unit upon permanent failure

Store in dry, clean environment; operating humidity 5%–95% non-condensing