Woodward 9907 Series Modules

Technical Dossier

Product Details And Specifications

Woodward 9907 Series: Comprehensive Module Range and Technical Overview

The Woodward 9907 Series represents one of the most widely deployed governor and control module families in global heavy industry. Installed across petrochemical refineries, nuclear power auxiliary systems, offshore gas compression platforms, and combined-cycle power generation facilities, the 9907 Series provides precision speed governing, load sharing, and synchronization control for turbines, engines, and generators. Its modular architecture and broad compatibility with Woodward's 505, 2301, and MicroNet control platforms have made it a long-term standard in critical rotating equipment protection and control.

The Evolution of 9907 Series Architecture

The 9907 Series was developed as a peripheral and interface module family to complement Woodward's core governor controllers. Early iterations focused on analog load sharing and droop speed control for parallel generator sets. As industrial control requirements evolved through the 1990s and 2000s, the series expanded to include digital interface cards, discrete I/O expansion modules, and communication adapters compatible with Modbus RTU and CAN bus protocols.

The series spans multiple hardware generations. First-generation modules used through-hole PCB construction with discrete analog circuitry. Later revisions introduced surface-mount technology, improved EMI shielding, and conformal coating for harsh-environment deployment. Many 9907 variants are now classified as mature or end-of-life by Woodward, meaning OEM production has ceased, but installed base demand for spare parts and replacements remains high across long-lifecycle industrial assets with 20–40 year operational horizons.

Compatibility considerations are critical: 9907 modules are designed for specific backplane voltages (typically 24 VDC or 28 VDC), connector pinouts, and firmware revisions. Cross-generation substitution requires engineering verification. DriveKNMS maintains revision-level traceability records for all 9907 inventory.

9907 Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked models within the Woodward 9907 Series, classified by primary function:

Speed Governing & Load Sharing

• 9907-018: Load sharing and speed control module for parallel generator sets; droop/isochronous modes
• 9907-013: Speed control module with analog input/output; single-unit governor interface
• 9907-014: Load sharing module; supports multi-unit paralleling with droop compensation
• 9907-015: Isochronous load sharing control; designed for isolated bus generator applications
• 9907-017: Speed/load control with remote setpoint input; 4–20 mA command interface
• 9907-020: Synchronizer and load control module; automatic paralleling to live bus
• 9907-021: Digital load sharing interface; compatible with 2301 series governor controllers

I/O Expansion & Interface Modules

• 9907-022: Discrete input expansion module; 16-channel digital input for governor systems
• 9907-023: Analog output expansion; 8-channel 4–20 mA output interface card
• 9907-025: Relay output module; 8 x SPDT relay outputs for alarm and trip circuits
• 9907-026: Analog input module; 8-channel differential analog input, ±10 V / 4–20 mA selectable
• 9907-030: Speed pickup interface module; magnetic pickup signal conditioning, dual-channel

Communication & Network Adapters

• 9907-032: Modbus RTU communication adapter; RS-485 serial interface for SCADA integration
• 9907-033: CAN bus interface module; J1939 protocol support for engine control networks
• 9907-035: Ethernet gateway module; Modbus TCP/IP bridge for legacy 9907 systems

Power Supply Modules

• 9907-040: 24 VDC regulated power supply module; 10 A output for 9907 backplane systems
• 9907-041: Redundant power supply module; hot-swap capable, dual-input 18–32 VDC

Sourcing Hard-to-Find & Obsolete 9907 Series Parts

A significant portion of the 9907 Series catalog has been discontinued by Woodward. For operators of aging turbine and generator control systems, this creates a critical supply chain challenge: OEM lead times for any remaining new-old-stock can exceed 52 weeks, and factory repair services for obsolete modules are no longer guaranteed.

DriveKNMS specializes in lifecycle extension support for the Woodward 9907 Series. Our inventory sourcing network covers:

• New surplus stock from decommissioned plant assets
• Professionally refurbished units with full functional test certification
• Revision-matched replacements with documented hardware and firmware compatibility
• Emergency same-week dispatch for critical unplanned outage scenarios

All 9907 modules sourced by DriveKNMS are accompanied by a test report, revision label documentation, and a 12-month warranty against functional failure. We maintain a continuously updated inventory database — contact us with your exact part number and revision code for real-time availability.

Quality Control for the 9907 Series Range

The 9907 Series modules interface directly with governor control backplanes and rotating equipment protection circuits. Standard functional testing protocols at DriveKNMS include:

• Power-on verification: Input voltage range testing at 18 V, 24 V, and 32 VDC; inrush current measurement
• Analog I/O calibration: All analog channels verified against NIST-traceable reference instruments; 4–20 mA loop accuracy ±0.1%
• Speed signal simulation: Magnetic pickup input channels tested with simulated frequency signals from 100 Hz to 10 kHz
• Load sharing bus test: Multi-unit load sharing communication verified using Woodward test harness protocol
• Relay output verification: Contact resistance, coil pull-in voltage, and dropout voltage measured for all relay channels
• Communication port test: RS-485 and CAN bus ports verified for signal integrity, termination resistance, and protocol handshake
• Thermal soak: 4-hour burn-in at 55°C ambient to screen latent component failures
• Visual and mechanical inspection: PCB examined for corrosion, cold solder joints, damaged connectors, and capacitor condition

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.