Description
Product Overview
The Woodward 9907-028 is a high-performance digital speed control system designed for mission-critical turbine and engine applications in power generation, marine propulsion, and industrial processes. As part of Woodward’s 9900 series of precision control solutions, this advanced module delivers ±0.05% speed regulation accuracy with adaptive neural network control algorithms, ensuring stable operation under varying load conditions. The 9907-028 features a ruggedized stainless steel enclosure (IP67) capable of withstanding extreme environments (-40°C to +85°C, 10G vibration), making it ideal for offshore platforms, arctic installations, and other demanding applications. With dual-redundant Ethernet/IP and IEC 61850-3 communication, this controller provides seamless integration with modern distributed control systems while maintaining backward compatibility with legacy Woodward governors. The module’s embedded predictive maintenance capabilities and cybersecurity hardening (IEC 62443-4-2) make it a future-proof solution for critical infrastructure.
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 9907-028 |
| Manufacturer | Woodward |
| Product Type | Digital Speed Controller |
| Control Accuracy | ±0.05% of setpoint |
| Speed Range | 20-30,000 RPM (software configurable) |
| Input Signals | 3× MPU (1-50kHz), 8× 4-20mA, 4× RTD/TC |
| Output Signals | 2× ±250mA servo, 4× 4-20mA, 6× relay |
| Control Algorithms | Neural Network PID, Model Predictive Control |
| Response Time | <20ms (10-90% stroke) |
| Communication | Dual Ethernet/IP, Modbus TCP, CAN FD |
| Power Supply | 24V DC (18-36V) or 120V AC (85-264V) |
| Power Consumption | 12W typical |
| Operating Temp. | -40°C to +85°C |
| Vibration Resistance | 10G continuous, 15G shock |
| Protection Rating | IP67 (NEMA 6) |
| Certifications | SIL 2, DNV-GL, ATEX Zone 2, IEC 62443-4-2 |
WOODWARD 9907-028
Main Features and Advantages
AI-optimized control: The Woodward 9907-028 implements deep learning-based adaptive control that continuously improves performance, achieving 50% faster settling times than conventional PID controllers. Its Digital Twin integration enables real-time performance simulation and optimization.
Military-grade reliability: Featuring triple-redundant sensor inputs with voting logic and conformal-coated triple-PCB stack, the controller meets MIL-STD-810H specifications for shock/vibration. The hermetically sealed connectors survive salt fog and high-pressure washdowns.
Advanced diagnostics: Embedded vibration spectrum analysis (0-25kHz bandwidth) and actuator performance trending predict mechanical issues months in advance. The 9907-028 generates ISO 13374-3 compliant health reports with remaining useful life estimates.
Cybersecurity hardened: Implements IEC 62443-4-2 SL2 requirements including secure boot, runtime integrity checking, and TLS 1.3 encrypted communications. The dual Ethernet ports support PRP/HSR redundancy protocols for zero-packet-loss operation.
WOODWARD 9907-028
Application Field
The Woodward 9907-028 protects critical assets in:
Combined Cycle Plants: Gas and steam turbine coordination
LNG Compression: Parallel compressor train control
Naval Propulsion: Warship turbine governing
Hydroelectric: Fast frequency response during grid events
Industrial Drives: Large compressor anti-surge protection
Related Products
9907-029: Marine-certified version with additional I/O
9907-027: SIL 3 safety-rated version
ProAct XT: Centralized turbine control system
EGB-900: Digital emergency backup governor
UG-25+: High-performance hydraulic actuator
TSN-SWITCH8: Managed TSN Ethernet switch
Installation and Maintenance
Pre-installation preparation: Verify actuator compatibility using Woodward’s TuneMaster Pro™ software. Implement optical isolation for long signal runs (>50m). Configure network segmentation with VLANs for control traffic.
Maintenance recommendations: Perform annual Bode plot analysis of control loops. Update AI model coefficients after mechanical overhauls. Monitor FPGA junction temperatures via embedded diagnostics. The 9907-028 supports A/B firmware banks for failsafe updates.
Product Guarantee
Woodward’s 7-year warranty includes:
NIST-traceable calibration with 2-year intervals
Lifetime security patches with FIPS 140-3 encryption
20-year spare parts availability
24/7 emergency response (2-hour escalation)
Each unit undergoes:
3000-hour accelerated life testing
MIL-STD-461G EMI/EMC testing
Fault injection validation for SIL 2 certification
