Woodward 9907-175 2301D-ST Digital Load Sharing & Speed Control

Woodward 9907-175 2301D-ST Digital Load Sharing & Speed Control System

The Woodward 9907-175 2301D-ST delivers precision digital load sharing and speed control for steam turbine applications across power generation, oil & gas, and industrial process facilities. Engineered with advanced microprocessor technology, this controller ensures stable operation, accurate load distribution, and seamless synchronization in multi-unit power systems.

Technical Specifications

• Model: 9907-175 (2301D-ST Series)
• Control Type: Digital Load Sharing & Speed Governor
• Input Voltage: 24 VDC nominal (18-32 VDC range)
• Speed Range: 0-10,000 RPM (configurable)
• Load Sharing Accuracy: ±1% of rated load
• Communication: Modbus RTU, analog I/O
• Operating Temperature: -40°C to +70°C
• Protection Rating: IP20 (panel mount)
• Dimensions: Standard DIN rail or panel mount configuration

Key Features & Benefits

• Precision Load Distribution: Maintains balanced load sharing across parallel turbine-generator sets with ±1% accuracy
• Adaptive Speed Control: PID-based governor algorithm responds instantly to load changes and grid disturbances
• Integrated Protection: Overspeed shutdown, loss of speed signal detection, and fault diagnostics
• Flexible Configuration: User-programmable parameters via front panel or PC interface
• Hot Standby Capability: Supports redundant controller configurations for critical applications
• Real-Time Monitoring: LED status indicators and digital display for operational visibility

Application Scenarios

Power Generation Plants: Coordinate multiple steam turbines in combined-cycle or cogeneration facilities, ensuring optimal load distribution and grid stability during peak demand periods.

Oil & Gas Facilities: Control mechanical drive turbines for compressors and pumps in offshore platforms, refineries, and pipeline stations where reliability is mission-critical.

Industrial Process Control: Regulate turbine-driven equipment in chemical plants, pulp & paper mills, and manufacturing facilities requiring precise speed and load management.

System Integration Solutions

The 2301D-ST integrates seamlessly with existing DCS and SCADA systems through Modbus RTU communication. Analog inputs accept speed sensor signals (magnetic pickups, proximity probes), while analog outputs drive electro-hydraulic actuators or servo valves. Digital I/O handles start/stop commands, alarm signals, and synchronization logic.

For enhanced system performance, pair with Woodward 8273-128 2301D-ST Module for expanded I/O capacity, Woodward 8280-300 Digital Speed Control for auxiliary drive coordination, or Woodward 5466-332 Analog I/O Module for distributed control architectures.

Common Technical Questions

Q: Can the 9907-175 control multiple turbines simultaneously?
A: Yes, when configured in load sharing mode, it coordinates 2-8 turbine-generator sets, distributing load proportionally based on rated capacity and droop settings.

Q: What speed sensor types are compatible?
A: Supports magnetic pickups (MPU), eddy current proximity probes, and Hall-effect sensors with frequency ranges from 100 Hz to 20 kHz.

Q: Is field calibration required after installation?
A: Initial setup requires speed calibration and PID tuning via the configuration software. Most installations achieve stable operation within 2-4 hours of commissioning.

Q: Does it support remote monitoring?
A: Yes, through Modbus RTU interface connecting to HMI/SCADA systems for real-time parameter monitoring, alarm logging, and remote setpoint adjustment.

Warranty & Support

Every Woodward 9907-175 2301D-ST controller includes a 12-month manufacturer warranty covering defects in materials and workmanship. Technical support includes installation guidance, configuration assistance, and troubleshooting resources to ensure optimal system performance.

Why Choose Industrial Control Hub?

We specialize in genuine Woodward turbine control systems with rigorous quality verification, fast global shipping, and expert technical consultation. Our inventory includes current production models and legacy components for retrofit projects, backed by detailed documentation and application engineering support.

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