中文版
Description
Woodward 8901-457 Digital Governor Controller
As an authorized Woodward distributor, Saulcontrol delivers precision control solutions for power generation and industrial machinery. Our products include comprehensive 1-year warranties and expert engineering support for critical applications.
Technical Specifications
| Product Model | Woodward 8901-457 |
| Manufacturer | Woodward, Inc. |
| Product Type | Digital Speed Controller |
| Control Loops | Speed, Load, Process |
| Speed Input | Magnetic pickup (60-12,000 Hz) |
| Control Outputs | 4-20mA, ±20mA PWM |
| Communication | Modbus RTU, CANbus |
| Operating Voltage | 10-35V DC |
| Accuracy | ±0.25% steady state |
| Response Time | Adjustable 0.1-20 seconds |
| Operating Temp | -40°C to +85°C |
| Protection Rating | IP52 (NEMA 4X optional) |
Main Features and Advantages
The 8901-457 delivers advanced engine and turbine control with triple-redundant processing for critical applications. Featuring adaptive tuning algorithms, it automatically compensates for load changes and system dynamics to maintain ±0.25% speed stability. The controller’s robust construction withstands severe vibration environments (up to 15g RMS) while maintaining precise control.
8440-2088
Integrated predictive diagnostics monitor actuator performance and detect speed sensor degradation before failures occur. Dual-module hot standby capability ensures uninterrupted operation during controller swaps. The intuitive Toolkit software provides commissioning wizards, comprehensive trending, and real-time performance optimization tools, reducing setup time by up to 70% compared to legacy governors.
Application Areas
Power Generation: The 8901-457 controls generator sets in prime power applications, providing isochronous load sharing between multiple units. For black-start facilities, its fast response maintains frequency during sudden load acceptance. Combined heat and power (CHP) plants utilize its process control capabilities for steam pressure and temperature regulation.
Marine Propulsion: In LNG carriers, the controller manages dual-fuel engines during fuel switching operations without speed fluctuations. Its torque limiting functionality protects drivetrains during heavy sea conditions. For offshore supply vessels, the module integrates with dynamic positioning systems for precise thrust control.
Related Products
8901-458 – Expanded I/O version with analog inputs
2301A-ST – Mechanical droop governor upgrade path
9907-164 – Power supply module for redundant systems
8270-1090 – Hydraulic actuator compatible with controller
9907-852 – Redundancy module for hot-swap capability
UG-40 – Magnetic speed sensor kit
5441-963 – Communication gateway for SCADA integration
Installation and Maintenance
Installation Preparation: When mounting the 8901-457, ensure vibration isolation if ambient levels exceed 5g RMS. Maintain minimum 50mm clearance around cooling fins. Use shielded twisted pair cables for all signal connections and ground shields at controller end only. Configure fail-safe modes and limits using Toolkit software before startup.
Maintenance Suggestion: Perform annual speed calibration using optical tachometer verification. Monitor adaptive tuning parameters for sudden changes indicating system wear. Maintain calibrated spares of the UG-40 speed sensors. Clean ventilation slots quarterly using low-pressure air. Replace after 5 years continuous service in high-vibration environments.
Contact Our Engineers:
WhatsApp: +86 180 5988 4797
Email: sales@saulcontrol.com
Phone: +86 181 5089 9970
Please contact Sunny sales@xiongbagk.cn for the best price.
➱ sales manager: Sunny
➱ email mailto: sales@xiongbagk.cn
➱ Skype/WeChat: 18059884797
➱ phone/Whatsapp: + 86 18059884797
➱ QQ: 3095989363
➱ Website:www.sauldcs.com
