Product Overview

The Yokogawa PSCCM24AAN is a primary Safety Control Module used within the ProSafe-RS Safety Instrumented System (SIS). It is responsible for executing critical safety logic to protect personnel, assets, and the environment in hazardous industrial processes. Designed to meet SIL3 requirements in a single-module configuration, it handles Emergency Shutdown (ESD) and Fire & Gas (F&G) applications with high reliability and deterministic performance. The module integrates with Yokogawa CENTUM VP via Vnet/IP, enabling coordinated monitoring of safety functions while maintaining strict separation between control and safety layers. We supply this unit as 100% brand new, original factory hardware to ensure maximum integrity and compliance with safety system requirements.

Technical Specifications

Engineering Advantages

Intrinsic SIL3 Safety Logic
The PSCCM24AAN employs a “Pair & Spare” dual-processor architecture that continuously cross-checks all executed logic. Any discrepancy between processors triggers an immediate transition to a safe state, ensuring deterministic and fail-safe operation.

High-Density Safety Processing
With advanced processing capability, the module can manage large numbers of safety I/O points within a single controller. This reduces the need for multiple controllers and minimizes cabinet space while maintaining high system performance.

Seamless DCS Integration
Through Vnet/IP communication, the module integrates with Yokogawa CENTUM VP, allowing operators to monitor safety status from the HMI while preserving strict segregation between basic process control and safety functions.

Hardened Environmental Resistance
Built with industrial-grade components and a robust mechanical design, the module withstands harsh conditions such as high temperatures, vibration, and electromagnetic interference commonly found in offshore platforms, refineries, and chemical plants.

FAQs

Does the PSCCM24AAN support redundancy?
Yes, it supports dual-redundant configurations. The standby module remains synchronized with the primary module and takes over within milliseconds if a failure is detected, ensuring continuous safety coverage.

How can I verify certification?
Each unit undergoes factory acceptance testing (FAT) and is compliant with SIL3 certification under IEC 61508 standards, as documented in Yokogawa ProSafe-RS safety manuals.

Can the module be hot-swapped?
Yes, hot-swapping is supported in redundant configurations. One module can be replaced while the other continues operating, maintaining uninterrupted safety protection.

What does the “AAN” suffix indicate?
The suffix typically refers to hardware revision and conformal coating options, which enhance protection against corrosive environments such as those found in chemical processing or wastewater facilities.