Honeywell 900RSM-0101 Redundant Switch Module – C300 Series
Honeywell 900RSM-0101 is listed for C300 Series RFQ review. Confirm quantity, condition and destination before quotation.
Model: CC-PAON01 51410070-176
Product Overview
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Technical Dossier
The Honeywell C300 Controller Series, deployed within the Experion PKS (Process Knowledge System) distributed control architecture, represents one of the most widely installed DCS platforms in global heavy industry. Operational installations span petrochemical complexes, nuclear power generation facilities, offshore oil and gas platforms, LNG terminals, and large-scale refinery units across North America, the Middle East, and Asia-Pacific. The C300 platform is characterized by its FTE (Fault Tolerant Ethernet) backplane communication, redundant controller support, and a modular I/O subsystem built around the CHARM (Characterization Module) architecture introduced in later revisions. Its installed base depth — accumulated over two decades of continuous deployment — makes lifecycle parts availability a critical operational concern for plant engineers and maintenance teams worldwide.
The C300 platform was introduced by Honeywell as the successor to the C200 controller within the Experion PKS framework, circa mid-2000s. Early C300 deployments relied on Series C I/O modules mounted in dedicated I/O Link-connected cabinets, with point-to-point wiring to field instruments. The architecture evolved through several distinct phases. The first generation established the core FTE dual-ring Ethernet backbone and the C300 controller card (CC-PCF901) as the primary processing node. Subsequent revisions introduced enhanced redundancy options, expanded memory capacity, and improved diagnostics via the Experion software layer. The introduction of CHARM I/O (around 2012–2014) represented a significant architectural shift: individual characterization modules replaced fixed-type I/O cards, enabling field-configurable signal types without hardware changes. Legacy Series C I/O modules (CC-PAON01, CC-PDOB01, CC-PDIL01, etc.) remain in active service across the installed base and are not forward-compatible with CHARM cabinets without gateway adapters. This compatibility boundary is the primary driver of demand for original Series C spare parts. Plants operating pre-CHARM C300 systems face a binary choice: maintain original hardware through the aftermarket supply chain, or undertake a capital-intensive CHARM migration project. For facilities with 10–25 year operational horizons, aftermarket parts sourcing is the economically rational path.
The following SKUs represent verified, commonly deployed modules within the Honeywell C300 / Experion PKS Series C I/O and controller ecosystem. Each entry reflects a discrete hardware component with a defined functional role within the DCS architecture.
Controllers & Processing Modules
Analog Input Modules
Digital Input Modules
Digital Output Modules
Power Supply Modules
Communication & Network Modules
Specialty & Safety Modules
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