WOODWARD SA1509-24 Proportional Solenoid – Governor Control Actuator Series
When a solenoid actuator fails mid-operation on a gas turbine or diesel generator set, the consequences are immediate and costly: uncontrolled fuel flow, emergency shutdown, and in worst cases, catastrophic overspeed. The governor control loop depends entirely on a precise, repeatable electromagnetic force to translate electrical signals into mechanical fuel rack position. Without a functioning solenoid, the entire prime mover becomes inoperable — no power generation, no process drive, no safety margin. The WOODWARD SA1509-24 is the component that closes this critical loop.
Within the Woodward SA-series proportional solenoid family, the SA1509-24 occupies the mid-range force output bracket, optimized for 24 VDC governor control circuits found in Woodward EG, UG, and 2301 series controllers. It has established a long service record in power generation, marine propulsion, and oil & gas compression applications across North America, Europe, and Southeast Asia — markets where unplanned downtime carries a measurable cost per hour.
Technical Specifications
Electrical
- Nominal Voltage: 24 VDC
- Coil Resistance: Refer to Woodward service bulletin for exact value at 20°C
- Control Signal: Proportional PWM or analog current (compatible with Woodward EG/2301 output stage)
- Insulation Class: Class F (155°C)
Mechanical
- Part Number: SA1509-24
- Weight: 1,240 g
- Stroke: Proportional linear displacement (refer to OEM datasheet for full travel)
- Mounting: Flange-mount, compatible with Woodward governor body interface
Environmental
- Operating Temperature: -40°C to +120°C (coil housing)
- Protection Rating: IP54 minimum (verify with application-specific enclosure)
- Vibration Resistance: Suitable for engine-mounted governor applications
Certifications & Standards
- Manufactured to Woodward OEM specifications
- Compliant with IEC 60068-2 environmental test standards
- Note: Specifications are based on Woodward published data. Confirm with official Woodward documentation for safety-critical installations.
Key Features & Benefits
- Proportional force output — Delivers linear force-vs-current response, enabling the governor controller to achieve fuel rack positioning accuracy within ±0.5% of full stroke, directly reducing speed droop on loaded generators.
- 24 VDC native compatibility — Eliminates the need for voltage conversion modules when retrofitting into existing Woodward 2301A/D or EG3P control panels, reducing BOM cost and wiring complexity.
- High thermal stability — Class F insulation maintains coil resistance within specification across the full engine operating temperature range, preventing governor hunting caused by thermal drift.
- Drop-in mechanical interface — Flange dimensions and shaft geometry match the original Woodward governor body, allowing replacement without machining or adapter plates — documented field replacement time under 2 hours.
- Compliant with IEC 60068-2 vibration and shock profiles — Validated for engine-mounted service where vibration amplitudes routinely exceed 2g, ensuring coil winding integrity over a full service interval.
- Long service life design — Sealed coil construction and corrosion-resistant housing reduce maintenance frequency in humid or salt-laden environments typical of marine and coastal power plant installations.
Industry & Equipment Applications
- Power Generation — Diesel gensets and gas turbine generator sets using Woodward EG or 2301 series governors; critical for isochronous load sharing in island-mode microgrids.
- Oil & Gas — Compressor driver engines and wellhead gas engines where governor response time directly affects pipeline pressure stability and flare reduction targets.
- Marine Propulsion — Main engine and auxiliary generator governors on commercial vessels; the SA1509-24 is specified for applications requiring DNV or Lloyd’s Register governor system compliance.
- Industrial Process Drive — Large pump and fan drives powered by diesel or gas engines in water treatment, mining, and chemical processing facilities where variable load demands precise speed regulation.
- Locomotive & Rail — Diesel-electric locomotive governor systems requiring robust solenoid actuators capable of sustained duty cycles under high-vibration traction conditions.
- Emergency Standby Systems — Hospital, data center, and critical infrastructure gensets where governor actuator reliability is a prerequisite for NFPA 110 Level 1 compliance.
System Integration & Compatible Parts
Upstream Controllers (signal source):
- Woodward 2301A / 2301D Load Sharing & Speed Control
- Woodward EG3P / EG10P Actuator (when used as pilot stage)
- Woodward 505 / 505E Digital Governor
Downstream Mechanical Interface:
- Woodward UG-8 / UG-40 Hydraulic Governor body
- Fuel injection pump rack linkage assemblies
Equivalent / Substitute Models:
- Direct OEM replacement: Woodward SA1509-24 (same part number, verify revision level)
- Functional equivalent consideration: SA1509-12 (12 VDC variant — requires control voltage adaptation; not a direct swap)
- Substitution prerequisite: Confirm coil resistance, stroke length, and mounting flange dimensions against the target governor body before ordering any alternative.
Our Quality Assurance Process
- Incoming Inspection — Each unit is verified against the Woodward part number, date code, and physical condition upon receipt. Units with evidence of remanufacture or counterfeit markings are quarantined and rejected.
- Electrical Functional Test — Coil resistance, insulation resistance (500 VDC Megger test), and proportional response are measured and logged against acceptance criteria derived from Woodward service data.
- Mechanical Verification — Stroke linearity, return spring force, and flange dimensional check are performed to confirm fit with the target governor body interface.
- Final Documentation & Packaging — Units are packed in anti-static, moisture-barrier packaging with desiccant. Available documentation includes: test report, material traceability record, certificate of conformance, and packing list.
How to Order
- Submit Your Inquiry — Send us the part number (SA1509-24), required quantity, and your application details via the contact form or email [email protected]. Photos of the existing unit are welcome.
- Receive Quotation — Our technical team reviews your request and responds within 24 hours with availability, lead time, and pricing. We will flag any compatibility questions before order confirmation.
- Confirm & Ship — Upon order confirmation, we arrange export documentation, select the appropriate carrier for your destination, and provide a tracking number. We support EXW, FOB, and CIF Incoterms.
Why Choose Konmask.com?
- Specialized in industrial automation components — We focus exclusively on PLC modules, DCS cards, governor actuators, and control system hardware. This is not a general electronics distributor; our team understands the application context of every part we supply.
- Rigorous incoming inspection on every unit — We do not list parts we cannot verify. Each WOODWARD SA1509-24 in our inventory has passed our 4-step QA process before it is offered for sale.
- Technical pre-sales support — If you are unsure whether the SA1509-24 is the correct actuator for your governor body, our engineers will review your application data and advise before you commit to a purchase.
- Global export experience — We have shipped to customers in over 30 countries. We handle export documentation, customs classification support, and carrier selection for your destination port.
- Responsive communication — All inquiries receive a substantive response within 24 business hours. We do not use automated quote systems — you communicate directly with a technical team member.
Frequently Asked Questions
Q: Is the WOODWARD SA1509-24 compatible with the Woodward 2301A load sharing controller?
A: Yes. The SA1509-24 operates on 24 VDC and accepts the proportional current output from the Woodward 2301A and 2301D controllers. Verify the output current range of your specific 2301 revision against the solenoid’s rated input before installation.
Q: Can I use the SA1509-24 as a direct replacement for a failed solenoid on a UG-8 governor without modifying the governor body?
A: In most cases, yes — the SA-series solenoids are designed to mount directly to the Woodward UG governor body. However, confirm the flange bolt pattern and shaft diameter on your specific UG-8 serial number, as minor revisions exist across production years. Contact us with your governor serial number and we will confirm compatibility.
Q: What is the lead time for the WOODWARD SA1509-24 solenoid actuator, and do you offer expedited shipping for urgent plant shutdowns?
A: Lead time depends on current stock status. In-stock units can ship within 1–2 business days. For urgent AOG (aircraft on ground) or plant emergency situations, contact us directly at +0086 19859288691 and we will prioritize your order and arrange the fastest available freight option to your location.
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