Turbine & Engine Speed Governing Solution — WOODWARD 9906-619 | 723 PLUS Digital Control
Where This Product Is Used
The Woodward 9906-619 (723 PLUS Digital Control) is deployed across heavy-duty industrial prime movers and rotating machinery where precise speed governing and load sharing are mission-critical. Typical installation environments include:
- Gas & Steam Turbine Generators — Isochronous speed control and load sharing in power plant auxiliary units and cogeneration systems.
- Diesel & Gas Engine Gensets — Standalone or paralleled generator sets in oil & gas facilities, marine vessels, and remote power stations.
- Compressor Drives — Pipeline compressor stations requiring tight speed regulation under variable load conditions.
- Industrial Process Turbines — Petrochemical and refinery process turbines where governor response time directly impacts process stability.
- Marine Propulsion Auxiliaries — Auxiliary diesel engines on commercial vessels requiring class-compliant speed control.
- Mining & Heavy Equipment Power Systems — Isolated grid applications with demanding transient load response requirements.
Technical Specifications
| Manufacturer | Woodward |
| Part Number | 9906-619 |
| Series | 723 PLUS Digital Control |
| Control Type | Digital Speed Governor / Load Sharing Controller |
| Input Power | 18–40 VDC (nominal 24 VDC) |
| Speed Sensing | Magnetic pickup (MPU) input, configurable frequency range |
| Actuator Output | Proportional current output, compatible with Woodward EG/TM series actuators |
| Communication | RS-232 serial port for configuration and monitoring |
| Operating Temperature | -40°C to +70°C |
| Enclosure | DIN-rail or panel-mount module |
| Weight | 1,750 g (approx.) |
| Certifications | CE, UL (refer to Woodward manual 02703 for full listing) |
Note: Specifications are provided for reference. Always verify against the official Woodward product manual before engineering design-in.
Why Engineers Specify This Model
- Proven 723 PLUS Platform — Decades of field-proven reliability in harsh industrial environments; widely supported by OEM integrators and service technicians globally.
- Configurable PID Governor — Adjustable droop, isochronous, and load-sharing modes allow a single unit to serve multiple application profiles without hardware changes.
- Robust Transient Response — Fast actuator response minimizes frequency deviation during sudden load application or rejection — critical for isolated grid and genset paralleling.
- Extensive Actuator Compatibility — Direct compatibility with Woodward EG, TM, and ProAct actuator families reduces integration complexity.
- Field-Configurable via Serial Port — Parameters can be tuned on-site using Woodward’s service tool without removing the unit from service.
- Long Product Lifecycle — Woodward maintains parts and firmware support for legacy 723 PLUS installations, protecting capital investment in existing control architectures.
Complete System Bill of Materials
For a fully functional 723 PLUS speed governing system, engineers typically specify the following complementary components:
- Speed Sensor / MPU — Woodward magnetic pickup (e.g., 9905-571 or equivalent) matched to ring gear tooth count
- Actuator — Woodward EG-3P, EG-6P, TM series, or ProAct actuator sized to fuel system torque requirements
- Power Supply — 24 VDC regulated panel supply (18–40 VDC input range); recommend redundant supply for critical applications
- Wiring Harness & Connectors — Shielded cable for MPU signal; per Woodward wiring diagram in manual 02703
- Service / Configuration Tool — Woodward Watch Window or compatible RS-232 laptop interface for commissioning
- Panel Enclosure — NEMA 4 / IP55 rated enclosure for outdoor or wash-down environments
Contact Konmask for bundled sourcing of complete governor system components.
Compliance & Industry Standards
- CE Marking — Compliant with EU Low Voltage Directive and EMC Directive
- UL Recognition — Listed per applicable UL standards for industrial control equipment
- ISO 8528-5 — Applicable to genset governor performance requirements (transient response class G2/G3)
- IEC 61511 / IEC 61508 — Consult Woodward SIL documentation for safety-instrumented system integration
- DNV / ABS / Lloyd’s Register — Marine type approval available for applicable 723 PLUS variants; confirm with classification society for vessel-specific requirements
Quality Assurance & Sourcing
Konmask.com sources industrial automation components through verified supply channels with documented traceability. Our quality process for the Woodward 9906-619 includes:
- Visual and dimensional inspection against Woodward OEM reference standards
- Label and serial number verification for authenticity screening
- Functional power-on check prior to shipment where test equipment is available
- Anti-static packaging with humidity indicator cards for sensitive electronics
- Full documentation package: datasheet, wiring diagram reference, and packing list
All units are offered with a 90-day warranty against defects in materials and workmanship under normal operating conditions. Extended warranty and on-site commissioning support available upon request.
How to Source This Part
- Confirm Part Number — Verify 9906-619 against your existing Woodward governor nameplate or engineering BOM.
- Request a Quote — Contact us via email or phone with your required quantity and delivery timeline.
- Lead Time & Stock — In-stock units ship within 3–5 business days. Out-of-stock orders are sourced within 2–4 weeks depending on supply chain availability.
- Export & Customs — We handle export documentation (commercial invoice, packing list, COO) for international shipments. HS Code available upon request.
- Payment Terms — T/T bank transfer, PayPal, and trade credit terms available for qualified accounts.
Application-Specific FAQ
Q: Is the 9906-619 compatible with my existing Woodward 723 wiring harness?
A: The 723 PLUS shares the same connector pinout as earlier 723 Digital Control variants in most configurations, but always verify against Woodward manual 02703 before direct substitution.
Q: Can this unit be used for load sharing between two parallel generators?
A: Yes. The 723 PLUS supports isochronous load sharing via a dedicated load sharing line (LSM) when two or more units are interconnected. Refer to Woodward application note for paralleling configuration.
Q: What actuator current output range does the 9906-619 provide?
A: The standard output is a proportional current signal compatible with Woodward EG and TM series actuators. Exact current range depends on firmware configuration — consult the manual or contact Konmask for application support.
Q: Is this a new, refurbished, or surplus unit?
A: Konmask supplies both new and professionally tested surplus units. Unit condition is clearly stated at time of quotation. All units pass our QA inspection process prior to shipment.
Q: Do you provide commissioning or technical support?
A: We provide pre-sales technical consultation and documentation support. On-site commissioning services can be arranged through our partner network — contact us for details.
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