Description
Woodward 8237-2601
Technical Specifications
- Part Number: 8237-2601
- Mounting Style: Panel Mount
- Power Configuration: High Voltage / High Voltage (HV/HV)
- Relay Architecture: Voted Relays
- Input Voltage: Speed probe input voltage must be strictly maintained between 16 and 28 Vdc.
Functional Features
- Dual Redundancy: Provides two dual-redundant trip relay outputs using the 2-out-of-3 voting architecture for maximum safety.
- Communication: Features triple-redundant Modbus communication ports for seamless integration with plant Distributed Control Systems (DCS).
- Analog Output: Includes a 4-20 mA speed readout for continuous process monitoring.
Application Scenarios
Ideal for large-scale power plants and industrial facilities where the overspeed protection rack is integrated directly into the primary electrical control cabinets.
Performance Parameters
- Frequency Range: Operates flawlessly with MPU signals ranging from 100 to 32,000 Hz.
- Signal Threshold: Output signals must meet strict threshold requirements to ensure correct speed detection and prevent nuisance trips.
Material Composition
Constructed with high-grade industrial electronics and flame-retardant panel housing materials designed to withstand the thermal environment of enclosed control panels.
Structural Characteristics
- Panel Integration: Designed with a panel-mount bezel for a clean, flush installation into control room switchboards.
- Connectivity: Rear-facing connectors for organized and shielded field wiring.
Working Principle
Processes multiple MPU inputs through redundant processing channels. It derives acceleration signals from the speed data to detect rapid over-acceleration events, triggering the voted relays to safely de-energize the turbine trip solenoids.
Installation Requirements
- Panel Cutout: Requires precise panel cutout dimensions as specified in the ProTech-GII installation manual.
- Grounding: Strict adherence to grounding guidelines is required to prevent electromagnetic interference from affecting the sensitive MPU signals.
Usage Precautions
- Probe Compatibility: Ensure connected speed probes (MPU, proximity, or eddy current) are compatible with the 16-28 Vdc input requirement.
- Configuration: Never alter safety-critical parameters without proper authorization and documentation.
