9905-709

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Digital Synchronizer and Load Control Model 9905-709 from Woodward. Features Reduced Upgrade Level, Open Delta PT Config, and 1–5 Vdc Speed Bias.

AVAILABILITY:

CALL FOR AVAILABILITY

Contact: 1-919-372-8413 (Intl.), 1-800-991-7026 (US), sales@axcontrol.com

3 Year Warranty: Learn More

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9905-709

    Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.00 (2)
  • Click a star to rate this product
    Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.00 (2)
  • Click a star to rate this product
Digital Synchronizer and Load Control Model 9905-709 from Woodward. Features Reduced Upgrade Level, Open Delta PT Config, and 1–5 Vdc Speed Bias.

AVAILABILITY:

CALL FOR AVAILABILITY

Contact: 1-919-372-8413 (Intl.), 1-800-991-7026 (US), sales@axcontrol.com

3 Year Warranty: Learn More

Sell Surplus: Have a 9905-709 to sell? Sell Now

Exchange Credit: Learn more about our exchange credit program

9905-709 Technical Specifications

Dimensions 18.14in x 10.4in x 2.3in
Electrostatic Discharge Standards 6000 Volts
Enclosure Type Sheet Metal Back Plate
Features 1–5 Vdc Speed Bias
Input Voltage 240VAC
Manufacturer Woodward
NEMA Rating Indoor Use
Operating Temperature –40 to +70 C
Storage Temperature –55 to +105 C
Weight 6lb 14oz

Product Description

This unit is a Woodward DSLC Digital Synchronizer and Load Control unit, part number 9905-709. This part is a microprocessor-based control for paralleling, synchronizing, loading, and unloading three-phase generator sets. It is designed for use with a Woodward speed control and an automatic voltage regulator (or another compatible device). Model 9905-709 does not have power factor control or process control functions, as it is one of the reduced upgrade level models in this Woodward series.

A few of the 9905-709 functions include:

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

The 9905-709 DSLC has an input voltage rating of 240 Vac and a speed bias of 1-5 Vdc. This Open Delta PT Configuration unit is rated for operating temps from –40 to +70 °C (-40 to 158 F) and storage temps from –55 to +105 °C (-67 to 221 F).

Model 9905-709 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 control, where only one DSLC control is granted dead-bus closing permission through locking techniques over the communications network.

Additional synchronizer features that may be enabled or disabled during setup include:

  • Time-delayed automatic multi-shot reclosing
  • Voltage matching
  • Auto-resynchronizing
  • Synchronizer timeout alarm

To protect against static damage, certain precautions should be followed when working with or near this unit, such as touching and holding a grounded metal object (pipes, cabinets, equipment, etc.) to discharge the static electricity on your body to the ground before doing maintenance on the DSLC, wearing natural fiber clothing while performing maintenance on the part, and keeping plastic, vinyl, and Styrofoam materials away from the control, the modules, and the work area as much as possible.

Reviews For 9905-709
Internal Review

Load control begins at breaker closure when the load control function takes control of the 9905-709 speed bias output directly from the synchronizer. The matching of synchronizer slip frequency to initial load can result in a bumpless transfer to load control. - AX Control

Repair Services For 9905-709

Type Lead Time Price Action
Repair Service 1-2 weeks $1355

Our highly skilled technicians can repair your 9905-709. 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
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9905-709 Manuals, White Papers, Data Sheets, and Troubleshooting