Product Overview

The ABB PM867K02 (3BSE081638R1) is a premium-tier processing core engineered for the AC 800M controller family, specifically designed for environments demanding the highest levels of safety and availability. This unit is uniquely categorized as a High Integrity (HI) processor, making it suitable for Safety Instrumented Systems (SIS) up to SIL3 when configured correctly. It features a dual-redundancy architecture that ensures continuous operation through a rapid 10ms failover mechanism. By integrating complex logic execution with rigorous diagnostic self-checks, the PM867K02 provides a unified platform for both critical process control and safety-related shutdowns.

Hardware Infrastructure and Operational Metrics

The PM867K02 is built upon the MPC866 microprocessor architecture, delivering consistent performance for multi-tasking industrial environments.

• Logic Processing: Executes 1,000 boolean operations in 0.09 ms.

• Memory Profile: 64 MB total RAM, with 46.559 MB dedicated to application runtime and 18 MB Flash PROM for firmware.

• Safety Rating: TUV approved for High Integrity SIL-rated applications.

• Energy Profile: 24 V DC supply with a low typical power dissipation of 5.1 W.

• Network Interface: Dual 10 Mbit/s Ethernet channels supporting MMS and IAC protocols.

• Module Capacity: Manages up to 12 CEX-Bus modules and 84 I/O modules in redundant mode.

• Environmental Resilience: G3 conformal coating for corrosion resistance in harsh industrial atmospheres.

• Unit Mass: 2700 g (5.95 lbs) for the K02 redundant assembly.

• Physical Footprint: 119 mm Width x 186 mm Height x 135 mm Depth.

Strategic Industrial Implementations

Given its High Integrity certification and redundant failover capabilities, the PM867K02 is primarily utilized in sectors where operational failure is not an option.

• Emergency Shutdown Systems (ESD): Acting as the primary logic solver for safety loops in oil, gas, and petrochemical refineries.

• Fire and Gas Detection: Managing plant-wide safety sensors and mitigation equipment with SIL3 reliability.

• Burner Management Systems (BMS): Ensuring safe startup, operation, and shutdown of industrial boilers and furnaces.

• Offshore Platforms: Utilizing marine-certified (ABS, DNV-GL) hardware for ruggedized control in salt-mist environments.

• Nuclear and Critical Infrastructure: Providing ISA Secure certified processing for highly regulated utility environments.

FAQ

Q: What differentiates the PM867K02 from other AC 800M processors?

A: The PM867K02 is specifically a "High Integrity" model. Unlike standard processors, it is TUV certified and hardware-optimized to run safety-critical applications alongside standard control tasks in a single redundant rack.

Q: Does this unit include a backup for memory retention?

A: Yes, the unit is equipped with a 3.6 V Lithium backup battery. This ensures that the application data in the volatile RAM is preserved during a total loss of system power.

Q: How does the redundancy feature affect the I/O capacity?

A: When operating in a redundant CPU configuration, the Modulebus capacity is slightly adjusted to 84 I/O modules (compared to 96 for a single CPU) to account for the overhead of the redundant synchronization link.

Q: Can this processor be installed in hazardous locations?

A: Absolutely. The PM867K02 carries multiple certifications for hazardous areas, including UL 60079-15 and cULus Class 1, Zone 2, making it suitable for explosive atmospheres labeled as AEx nA IIC T4.

Q: Is the firmware easily upgradable on this model?

A: Firmware is stored in a dedicated 18 MB Flash PROM. It can be updated using ABB's standard engineering toolset (Control Builder M) over the Ethernet or service port connections.