Description
Woodward 8557-858
Technical Specifications:
- Brand: Woodward
- Model: 8557-858
- Power Supply: 24VDC or 85-265VAC wide-range power supply
- Speed Input: Supports Magnetic Pickup Unit (MPU) and optical speed sensor signals
- Control Output: PWM signal or analog output
Functional Features:
- Adaptive PID Regulation: Built-in intelligent adaptive PID algorithm ensures extremely short speed recovery time and zero overshoot during sudden load additions or rejections.
- Multi-Mode Load Sharing: Supports base load operation, isochronous percentage allocation, and master-slave control for parallel generator sets.
- Comprehensive Safety Protection: Integrates automatic shutdown protection for overspeed, underspeed, low lube oil pressure, and high coolant water temperature.
Application Scenarios:
Widely applied in diesel generator sets, gas generator sets, marine auxiliary engines, distributed energy power stations, and speed/load control of various industrial drive equipment.
Performance Parameters:
- Steady-State Speed Droop: Continuously adjustable from 0% to 5%
- Speed Droop Compensation: Adjustable from 0% to 10%
- Speed Control Accuracy: ≤ 0.25%
Material Composition:
Features a high-strength flame-retardant engineering plastic housing. Internal printed circuit boards undergo strict conformal coating treatment (moisture, salt spray, and mold resistant) to adapt to harsh industrial environments.
Structural Features:
The front panel is equipped with a high-definition LCD display and membrane keypad, supporting local parameter setting and real-time status monitoring. The rear utilizes highly reliable plug-in wiring terminals for convenient on-site wiring and maintenance.
Working Principle:
The controller continuously samples the prime mover’s speed signal and load current. The microprocessor calculates the required fuel or steam volume through complex control algorithms, outputting corresponding drive signals to the actuator to form a high-precision closed-loop control system.
Installation Requirements:
Must be installed inside a control cabinet, avoiding direct sunlight and severe mechanical vibration. Speed signal wires must use shielded twisted pairs and be strictly routed in separate conduits from power cables.
Usage Precautions:
Accurately verify critical parameters such as engine gear teeth and rated speed before powering up. Save and restart after modifying control parameters for changes to take effect. Regularly use dedicated debugging software for system simulation and offline testing.
