Description
Woodward ESDR45448-897
Technical Specifications
- Part Number: 45448-897.
- Type: Emergency Shutdown Relay.
- Inputs: Multiple discrete and analog safety inputs.
- Outputs: Hardwired shutdown relays.
Functional Features
- Fail-Safe Design: Loss of power or signal triggers shutdown.
- Comprehensive Monitoring: Overspeed, low oil pressure, high temperature, and coolant level.
- Pre-Alarm Outputs: Warning outputs before shutdown for operator intervention.
- Manual Reset: Requires manual reset after shutdown to prevent auto-restart.
Application Scenarios
Mandatory for all industrial engines and generators to protect against catastrophic mechanical failure.
Performance Parameters
- Response Time: Fast shutdown actuation (<100ms).
- Relay Rating: High-capacity contacts for starter and fuel valve control.
Material Composition
Industrial-grade relays and ruggedized enclosure.
Structural Characteristics
- Mounting: DIN rail or panel mount.
- Indicators: LED status for each safety input.
Working Principle
Continuously monitors safety inputs; if any parameter exceeds the shutdown limit, it de-energizes the shutdown relay, cutting fuel and stopping the engine.
Installation Requirements
Wire safety sensors directly to the module; do not route through PLCs. Test all safety inputs during commissioning.
Precautions for Use
Never bypass safety inputs. Perform regular functional testing of the shutdown system.
