Honeywell Experion PKS 8C-PCNT03 C300 Control Processor

Product Overview

The Honeywell 8C-PCNT03 (8CPCNT03) is the modern standard Control Processor for the Experion PKS (Process Knowledge System) Series 8 platform. It serves as the successor to the 8C-PCNT02, offering enhanced processing power and expanded memory while maintaining full backward compatibility with all previous Experion LX and PlantCruise releases. As the "brain" of the Series 8 system, the 8C-PCNT03 executes the deterministic Control Execution Environment (CEE), managing complex regulatory control, batch sequences, and fast-logic strategies. This version is factory-shipped with a G3 conformal coating, providing the highest level of protection against corrosive atmospheric contaminants (such as Hydrogen Sulfide and Chlorine), making it the primary choice for global chemical, oil, and gas operations.

Technical Configuration

The 8C-PCNT03 architecture is designed for extreme reliability and high-speed data processing.

• Dual Processor Architecture: Utilizes a high-performance multi-processor design (typically Dual ARM Cortex-A9) to ensure fast execution times and deterministic scheduling.

• Expanded Memory: Equipped with 512MB RAM and 1GB Flash memory, providing ample space for large-scale control strategies and extensive diagnostic logging.

• G3 Conformal Coating: Specifically treated to meet ISA S71.04 Class G3 standards for protection against corrosive environments.

• Redundancy Ready: Supports 1-to-1 hardware redundancy. When paired with a second 8C-PCNT03 on a redundant IOTA, it provides "bumpless" failover in the event of a primary processor fault.

• Integrated Communication: Features dual FTE (Fault Tolerant Ethernet) ports for high-security network integration and dual I/O Link ports for controlling up to 1024 I/O points.

Technical Specifications

Technical FAQs

Is the 8C-PCNT03 compatible with my existing 8C-PCNT02 configuration?

Yes. The 8C-PCNT03 is the direct replacement for the 8C-PCNT02. It can be installed on the same IOTA and is compatible with all current and previous Experion software releases.

What is the difference between 8C-PCNT03 and 8C-PCNT05?

The 8C-PCNT03 supports both new and legacy Experion releases, making it ideal for maintenance and upgrades of existing systems. The 8C-PCNT05 is the newest version (V5) and only supports Experion R520 and later; notably, the 03 and 05 versions are not interoperable in a redundant pair.

Does this controller support peer-to-peer communication?

Yes. The C300 CEE supports high-speed peer-to-peer communication with other C300 controllers over the FTE network, as well as communication with specialty modules like Foundation Fieldbus and Profibus.

Engineering & Installation Guide

• Upgrade Note: When replacing an older 8C-PCNT02 with an 8C-PCNT03 in a redundant pair, it is recommended to eventually replace both units to the same hardware revision to ensure identical execution timing and memory handling, although they can operate together during the migration period.

• Network Wiring: Use only Honeywell-certified shielded Ethernet cables for FTE connections. Ensure that the "Yellow" and "Green" cables are connected to their respective ports on the IOTA to maintain the integrity of the Fault Tolerant Ethernet logic.

• Thermal Management: The 8C-PCNT03 relies on the Series 8 vertical design for natural convection. Ensure the cabinet has sufficient ventilation and that the 150 mm clearance rule is observed above and below the IOTA row to prevent the processor from overheating.