CP451-51 | Yokogawa | Processor Module

Product Description

The CP451-51 is a high-reliability CPU module designed for Yokogawa Field Control Stations, specifically for the AFV300 and AFV400 series. Serving as the primary logic execution unit, it manages regulatory control and sequence tasks within the CENTUM VP and CS 3000 environments. 

Technical Specifications

• Primary Function: Main Controller for AFV300/AFV400 Field Control Stations
• Legacy Compatibility: Direct replacement for CP451-11
• Protection Level: -5 (Standard type; non-explosion protected)
• Environmental Resistance: 1 (ISA Standard G3 conformal coating for corrosion protection)
• Redundancy Support: Supports dual-redundant configuration with "Pair-and-Spare" logic
• Data Integrity: Integrated Error Correcting Code (ECC) memory
• Cooling Requirement: Natural convection
• Net Weight: 1.0 Kg
• Shipping Weight: 2.0 Kg

Common FAQ

Can I swap my old CP451-11 with this CP451-51 without system modifications?Yes, the CP451-51 is designed as a direct replacement for the CP451-11. It fits the same physical slot and maintains the same functional parameters while offering the benefit of the G3-rated protective coating.

What environments require the ISA Standard G3 option?The G3 option is critical for plants where corrosive gases (such as hydrogen sulfide or sulfur dioxide) are present. This coating prevents the degradation of electronic circuits, significantly extending the module's lifespan in chemical or wastewater treatment facilities.