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3 year warranty

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Woodward 9905-710 Digital Synchronizer and Load Control for three-phase AC generator, 1–5 Vdc Speed Bias, Open Delta PT configuration, with Full Functions.



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  • Part Number: 9905-710
  • SKU: 9905710WO
  • Manufacturer: Woodward
  • Series: DSLC Digital Synchronizer and Load Control

9905-710 Technical Specifications

Dimensions H460.65mm x W264.16mm x D58.42mm
Input Voltage 240V
Manufacturer Woodward
Model 9905-710
Operating Temperature –40 to +70 °C
Standards Full Upgrade Level
Storage Temperature –55 to +105 °C
Weight Less than 7lbs.

Product Description

Model number 9905-710 is in Woodward’s series of microprocessor-based Digital Synchronizer and Load Controls for paralleling, synchronizing, loading, and unloading three-phase AC generator sets. This model is capable of power factor control and process control functions, as it is one of the full upgrade level controls in this Woodward series.

A few of the load control features of the 9905-710 DSLC include:

  • A frequency trimmer function for accurate frequency control in isochronous load sharing systems
  • Simple load droop operation provides safe operation in parallel bus applications
  • Adjustable load switch output with independent pick-up and drop-out points
  • Load raise and lower inputs to adjust speed before synchronizing
  • Voltage raise and lower inputs to adjust voltage before synchronizing

9905-710 is designed for use with a Woodward speed control (or other compatible devices) and an automatic voltage regulator. This unit has three-phase true RMS power sensing, ensuring accuracy even in the event of voltage fluctuations and unbalanced phase loading. It has an input voltage rating of 240 Vac and a speed bias of 1-5 Vdc.

Additional environmental specifications for the 9905-710 are:

  • Humidity - 95% at 38 °C
  • Mechanical shock - US MIL-STD 810C, Method 516.2, Procedures I, II, V
  • Electromagnetic susceptibility - ANSI/IEEE C37.90.2; ANSI C37.90.1-1989
  • Vibration - US MIL-STD 167, Type I

Reviews For 9905-710

Internal Review

The discrete outputs are the relay driver output commands from the 9905-710. Each optically isolated discrete output is designed as a low-side driver capable of sinking a maximum of 200 mA. The use of drivers allows the user to supply relays of a contact rating appropriate for the application. - AX Control

Repair Services For 9905-710

Type Lead Time Price Action
Repair Service 1-2 weeks $1073

Our highly skilled technicians can repair your 9905-710. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
Learn More

9905-710 Manuals, White Papers, Data Sheets, and Troubleshooting