Woodward 9907-175 Load Sharing Module – Precision Load & Speed Control | Woodward EG Governor Platform
Engineering Background
The Woodward 9907-175 is a dedicated Load Sharing Module engineered for parallel operation of diesel generator sets and gas turbine-driven generators. Designed within Woodward’s proven EG (Electric Governor) control architecture, this module enables multiple generating units to share electrical load proportionally and maintain stable isochronous frequency under varying grid conditions. It is a critical component in island-mode microgrids, standby power systems, and utility interconnect applications where precise load distribution is non-negotiable.
Product Positioning
Konmask.com supplies the Woodward 9907-175 as a verified, tested replacement and spare module for power plant operators, OEM integrators, and industrial maintenance teams. Each unit is sourced through controlled supply channels and undergoes functional verification before dispatch. This module is the preferred choice for engineers who require drop-in compatibility with existing Woodward EG governor panels without re-engineering the control loop.
Complete Technical Specifications
| Part Number | 9907-175 |
| Manufacturer | Woodward |
| Module Type | Load Sharing & Speed Control Module |
| Platform / Series | Woodward EG Electric Governor Series |
| Primary Function | Isochronous load sharing for parallel generator sets |
| Input Signal | Speed signal from magnetic pickup (MPU); load signal from current transformer (CT) |
| Output | Analog control signal to EG actuator / fuel control valve |
| Operating Voltage | 24 VDC nominal (consult Woodward datasheet for tolerance range) |
| Load Sharing Method | Droop / Isochronous switchable |
| Frequency Reference | 50 Hz / 60 Hz selectable |
| Enclosure / Form Factor | DIN-rail or panel-mount module |
| Operating Temperature | -40°C to +70°C |
| Weight | Approx. 1.36 kg |
| Compliance | CE, UL (refer to Woodward official datasheet for current certifications) |
| Country of Origin | USA |
Proven Application Environments
- Diesel Generator Paralleling: Synchronizing and load-sharing across 2–8 generator sets in island-mode or grid-parallel configurations
- Gas Turbine Power Plants: Load control for industrial gas turbines using Woodward EG actuator systems
- Marine Power Systems: Shipboard generator load management in vessels requiring redundant power generation
- Data Center & Critical Facility Backup: Standby genset paralleling for N+1 redundancy architectures
- Oil & Gas Upstream / Midstream: Remote wellhead and pipeline compressor station power generation
- Mining & Heavy Industry: Isolated grid power management in off-grid industrial sites
Engineering Advantages
- True Isochronous Load Sharing: Maintains rated frequency (50/60 Hz) while distributing load proportionally — eliminates frequency droop under load transients
- Drop-In Replacement: Direct form-fit-function replacement for existing Woodward EG governor panels; no rewiring or recalibration of the governor panel required
- Robust Signal Conditioning: Integrated MPU signal conditioning tolerates wide speed signal amplitude variation, reducing false trips during engine cranking
- Adjustable Gain & Stability: On-board potentiometers for gain, stability, and droop percentage allow field tuning without specialized software
- Wide Temperature Range: Rated for -40°C to +70°C ambient — suitable for outdoor enclosures and tropical climates without derating
- Proven Field Reliability: Woodward EG platform has accumulated decades of field hours across power generation, oil & gas, and marine sectors globally
System Architecture & Signal Flow
The 9907-175 operates as the central intelligence node in a Woodward EG governor loop:
- Speed Sensing: Magnetic pickup (MPU) on the engine flywheel generates a frequency signal proportional to engine RPM → fed into the 9907-175 speed input terminals
- Load Sensing: Current transformer (CT) on the generator output bus feeds a load current signal → the module computes real power contribution of each unit
- Load Sharing Bus: A dedicated inter-unit load sharing line connects all parallel 9907-175 modules → enables proportional load distribution without a master controller
- Control Output: The module outputs a 4–20 mA or voltage analog signal → drives the Woodward EG actuator to adjust fuel rack / throttle position
- Frequency Regulation: Closed-loop PID control maintains set-point frequency while the load sharing bus equalizes kW contribution across all online units
Sourcing & Quality Verification
Konmask.com applies a multi-stage quality protocol to every Woodward 9907-175 unit:
- Source Traceability: Units sourced from authorized distributors, decommissioned OEM panels, or verified surplus with full part number and date code documentation
- Visual Inspection: PCB, connectors, and housing inspected for corrosion, burn marks, mechanical damage, and counterfeit indicators
- Functional Bench Test: Power-on verification, output signal check, and load sharing bus communication test performed on calibrated test bench
- Packaging: Anti-static bag + foam-lined carton; humidity indicator card included for long-distance ocean freight
- Documentation: Certificate of conformance (CoC) and test report available on request
Procurement Process
- Confirm Part Number: Verify 9907-175 against your existing Woodward governor panel nameplate or BOM
- Request Quote: Contact [email protected] with quantity, required lead time, and destination port
- Order Confirmation: Pro-forma invoice issued within 1 business day; payment via T/T, PayPal, or credit card
- Shipping: DHL / FedEx Express (3–5 days worldwide) or sea freight for bulk orders; export documentation (commercial invoice, packing list, CO) included
- After-Sales Support: 12-month warranty; technical support available via email and WhatsApp
Technical FAQ
- Q: Is the 9907-175 compatible with Woodward EG-3P and EG-10P actuators?
- A: Yes. The 9907-175 is designed to interface with the full Woodward EG actuator family. Verify actuator coil resistance and output signal range match module specifications before installation.
- Q: Can this module operate in droop mode only (without load sharing)?
- A: Yes. The load sharing bus connection is optional. When disconnected, the module operates in standard droop speed control mode, suitable for single-unit or non-paralleled applications.
- Q: What is the difference between 9907-175 and 9907-176?
- A: The 9907-176 is a later revision with minor PCB updates. Both are functionally interchangeable in most EG governor panel configurations. Contact us to confirm compatibility with your specific panel revision.
- Q: Do you provide installation and commissioning support?
- A: Konmask.com provides remote technical support including wiring diagrams, parameter setting guidance, and troubleshooting via email and video call. On-site commissioning can be arranged for large orders.
- Q: What certifications does the 9907-175 carry?
- A: Woodward products are manufactured to CE and UL standards. Refer to the official Woodward product datasheet (available on request) for the current certification matrix applicable to your region.
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