Honeywell Experion PKS CC-PCNT02 (51454551-275) C300 Controller

Product Overview

The Honeywell CC-PCNT02 (51454551-275) is a core C300 Control Processor designed for the Experion PKS Series C I/O platform. While it shares the same processing logic and Control Execution Environment (CEE) as the Series 8 (8C) models, the Series C version is characterized by its horizontal form factor and its mounting interface with the Series C Input Output Termination Assembly (IOTA). The CC-PCNT02 is the central intelligence of the DCS, executing regulatory control, high-speed logic, and batch procedures. This specific part number, 51454551-275, signifies that the unit is G3 Conformal Coated, providing essential protection against corrosive contaminants in industrial environments such as refineries, pulp and paper mills, and chemical plants.

Technical Configuration

The CC-PCNT02 is engineered for high-availability process automation and seamless network integration.

• Series C Horizontal Design: Optimized for traditional horizontal rack mounting, interfacing with the Series C IOTA via a robust multi-pin connector.

• Fault Tolerant Ethernet (FTE): Utilizes Honeywell’s proprietary FTE network for dual-redundant, high-security communication between the controller, the server, and other peer nodes.

• G3 Conformal Coating: The "275" suffix ensures the internal circuitry is protected against ISA S71.04 Class G3 harsh conditions (corrosion from H2S, Cl2, etc.).

• Deterministic Execution: Supports user-defined execution periods (from 50 ms to 2000 ms), ensuring that critical control loops are processed with consistent timing.

• Redundancy Support: Designed for 1-to-1 hardware redundancy. In a redundant pair, the secondary controller tracks the primary's state in real-time to allow for an instantaneous, bumpless failover.

Technical Specifications

Technical FAQs

What is the difference between the CC-PCNT01 and the CC-PCNT02?

The CC-PCNT02 is a hardware revision that offers improved memory management and internal processing efficiency. It is the standard replacement for the older CC-PCNT01 in most Experion PKS systems.

Can I use a Series C controller (CC) with Series 8 (8C) I/O?

The C300 controller is highly versatile. A Series C C300 can manage Series 8 I/O modules, provided the appropriate I/O Link infrastructure and software configuration are in place within the Experion Control Builder.

How do I identify a G3 coated module vs. a standard one?

The part number suffix is the definitive guide. Suffixes like "-175" or "-275" indicate G3 coating, whereas "-100" or "-200" typically denote non-coated or standard-coated units.

Engineering & Installation Guide

• IOTA Mounting: Ensure the CC-PCNT02 is firmly pressed into the Series C IOTA and the locking tabs are engaged. A poor connection at the IOTA interface can cause intermittent "I/O Link Failure" or "Module Missing" alarms.

• Redundancy Cabling: For redundant pairs, the redundancy cable must be connected between the primary and secondary IOTAs. Use the Experion System Status Display to verify that the modules are "Synchronized" before performing any maintenance.

• FTE Cabling: Use Honeywell-certified crossover or straight cables as defined by the FTE topology. Ensure the "Yellow" and "Green" networks are physically isolated to maintain true fault tolerance.

• Battery-less Operation: Modern CC-PCNT02 units utilize flash memory for strategy retention. However, during a full power cycle, the controller must be re-loaded from the Experion Server if the RAM contents are lost, unless a permanent "Checkpoint" has been saved to the Flash.