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Help CenterHoneywell S81-U1002-1 MODULE VERSION 2.4.10 System's Central Unit
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Honeywell S81-U1002-1 MODULE VERSION 2.4.10 system's central unit
Honeywell S81-U1002-1 (version 2.4.10) is the core CPU card of the S81 safety control system. It is suitable for high-risk industrial scenarios, supports SIL3 level fault tolerance and redundancy architecture, and provides real-time control, communication interaction, online program download and hardware self-diagnosis. It is a core control component of critical safety systems in petrochemical, oil and gas storage and transportation industries.
Email: xmxblynn@163.com
Phone: +86 18059884797
Core Parameters and Performance
Item Parameters
Module Type S81 System CPU Card, Version 2.4.10, including CPU, memory, Ethernet, and monitoring circuitry
Compatible System Honeywell S81 Safety Control System, supporting redundant CPU parallel operation
Core Configuration 25MHz Renesas H8-2318 microcontroller, 512K×8 buffered static RAM (with lithium battery), 2MB expandable flash memory
Communication Interface 10/100M Ethernet RJ45 interface, built-in CPLD communication management, supports LAN links
Safety Level Compliant with IEC 61508, compatible with SIL3 level Safety Instrumented System (SIS)
Power Supply and Hot-Swapping Supports hot-swapping, compatible with redundant power supply for the system, includes hardware fault self-diagnosis and external watchdog timer
Status Indicators LINK/ACT/RUN/WDO LEDs, providing real-time feedback on link, communication, operation, and watchdog status
Installation Specifications Front-mounted plug-in type, with locking screws, compatible with standard S81 system racks
Core Functions
High-Reliability Control Operation: A 25MHz microcontroller ensures real-time control cycles, adapting to critical logic such as safety interlocks and emergency stop (ESD), meeting the deterministic and low-latency requirements of SIL3 scenarios.
Redundancy and Fault-Tolerant Operation: Supports dual CPU parallel redundancy, automatic master/slave switching, hardware fault self-checking, and external watchdog monitoring, reducing the risk of single-point failures and adapting to critical safety controls.
Network Communication and Interaction: A 10/100M Ethernet interface supports LAN connectivity, and built-in CPLD management communication enables data interaction between the controller and the host system and operator station, supporting online configuration program transmission.
Program and Data Storage: Lithium-ion battery backup RAM ensures data integrity during power outages; flash memory stores the operating system and configuration programs, supporting online download and updates, adapting to system maintenance without downtime.
Hardware and Status Diagnostics: LEDs such as LINK/ACT/RUN/WDO provide real-time feedback on operating status; an external watchdog monitors software cycles; hardware self-checks cover core circuits, shortening troubleshooting time.
Safety and compliance compatibility: Compliant with IEC 61508 standard, compatible with SIL3 level safety instrumented systems, and meets the safety certification requirements of industries such as petrochemicals and oil and gas.
Email: xmxblynn@163.com
Phone: +86 18059884797
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