Description
Foxboro FCP280RH924YA
Technical Specifications
- Part ID: RH924YA.
- Redundancy: 1:1 Hot Standby with Bumpless Transfer.
- Fieldbus: Dual redundant 2 Mbps HDLC.
- Time Sync: GPS/IEEE 1588 support.
Functional Features
- Zero-Impact Failover: Process outputs remain stable during controller switchover.
- Comprehensive Testing: Built-in self-test (BIST) routines run continuously.
- Flexible Configuration: Supports both centralized and distributed I/O architectures.
Application Scenarios
Standard spare for existing FCP280 RH924YA installations. Essential for minimizing MTTR (Mean Time To Repair) in critical units.
Performance Parameters
- MTBF: > 150,000 hours.
- Switching Time: < 50 ms typical.
Material Composition
Industrial-grade conformal coating. Gold-plated edge connectors for reliable backplane communication.
Structural Characteristics
Matches the physical dimensions and connector layout of the RH924WA but may have internal component differences. Label verification is mandatory.
Working Principle
Maintains a shadow copy of the primary controller’s memory. Continuously validates primary outputs; if validation fails, it asserts control immediately.
Installation Requirements
Must be paired with a compatible RH924YA peer. Verify baseplate slot assignment matches redundancy configuration.
Usage Precautions
Never mix RH924YA and RH924WA in the same redundant pair. Document the exact part number during replacement for traceability.
