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3 year warranty

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Woodward 9905-707 DSLC for three-phase AC generator. Features 1–5 Vdc Speed Bias, Open Delta PT configuration, 120 voltage input, with Full Functions.



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  • Part Number: 9905-707
  • SKU: 9905707WO
  • Manufacturer: Woodward
  • Series: DSLC Digital Synchronizer and Load Control

9905-707 Technical Specifications

Dimensions 460.65mm x 264.16mm x 58.42mm
Features Reduced Upgrade Level
Input Voltage 120Vac
Manufacturer Woodward
Operating Temperature -40 to 158 F
Standards 1–5 Vdc Speed Bias
Storage Temperature -67 to 221 F
Weight 6lbs 14oz

Product Description

This part is in a Woodward series of microprocessor-based Digital Synchronizer and Load Controls. This unit is model number 9905-707, one of the series's reduced upgrade level model numbers. The 9905-707 is designed to be used in the paralleling, synchronizing, loading, and unloading of three-phase AC generator sets, but as a reduced upgrade level model, it does not have power factor control or process control functions.

The 9905-707 DSLC has an input voltage rating of 120 Vac and a speed bias of 1-5 Vdc. This Open Delta PT Configuration control is rated for operating temperatures from –40 to +70 °C (-40 to 158 F) and storage temperatures from –55 to +105 °C (-67 to 221 F).

A few of the 9905-707 functions include:

  • Built-in diagnostics
  • Setup, metering, and diagnostic capability through a handheld programmer terminal  
  • Automatic generator loading and unloading
  • Droop, baseload, and isochronous load control capability
  •  Reverse power relay.

The 9905-707 offers either phase matching or slip frequency synchronizing. Actual slip frequency and breaker delay values are used to anticipate a minimum phase difference between generator and bus at actual breaker closure for both methods. There is an automatic dead-bus closure function on this unit, where only one DSLC unit is granted dead-bus closing permission through locking techniques over the communications network.

Precautions to protect against static damage should be followed when working with or near the control. Repairs for models 9905-707 are available through AX Control.

Reviews For 9905-707

Internal Review

In order to perform maintenance on the electronic control unit 9905-707, refer to any and all manuals pertaining to this part and discharge the static electricity on your body to the ground by touching and holding a grounded metal object (pipes, cabinets, equipment, etc.). - AX Control Tech

Repair Services For 9905-707

Type Lead Time Price Action
Repair Service 1-2 weeks $1209

Our highly skilled technicians can repair your 9905-707. 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

9905-707 Manuals, White Papers, Data Sheets, and Troubleshooting