Product Overview

The Honeywell 10002/1/2 serves as the core Central Processor Unit (CPU) for the Fail-Safe Controller (FSC) system. It executes safety logic, manages I/O synchronization, and performs continuous diagnostics to ensure high-integrity process control, especially for Emergency Shutdown (ESD) and Fire and Gas (F&G) applications. Supplied as 100% brand new, original factory stock to guarantee compliance with certified safety-instrumented functions.

Technical Specifications

Engineering Advantages

• Deterministic Logic Execution:
  Ensures fixed scan times for safety-critical tasks, providing predictable response times regardless of system load.

• High-Integrity Memory Management:
  Separate memory for system and application processes prevents overwriting of critical firmware, ensuring system stability.

• Strict Power Regulation:
  Ultra-low ripple content (<50 mV p-p) ensures protection of sensitive processing components and long-term reliability.

• Scalable Storage Capacity:
  Up to 1 Mbyte of Application RAM and EPROM for complex safety logic programs and cause-and-effect matrices.

FAQs

• Can this CPU be used in a redundant configuration?
  Yes, it supports Dual Modular Redundant (DMR) configuration for fault-tolerant operation.

• Does it require a specific firmware version?
  Ensure the EPROM chips are compatible with your existing Honeywell Safety Builder project when replacing the unit.

• What is the primary function of Application RAM?
  It stores dynamic process data, timer values, and logic variables used during program execution.

• How do I verify CPU status during operation?
  The front-panel LEDs and diagnostics via the backplane indicate CPU status, run mode, or any internal hardware faults.