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3 year warranty

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Low Voltage Digital Controller 8280-604 for Woodward Series 723PLUS. Features automatic breaker opening and compatibility with Digital Synchronizer and Load Controllers. This unit can be programmed for various systems because of the specific circuitry and terminals.



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  • Part Number: 8280-604
  • SKU: 8280604WO
  • Manufacturer: Woodward
  • Series: 723 and 723PLUS Digital Control

8280-604 Technical Specifications

Series 723 and 723PLUS Digital Controller
Part Number 8280-604
Manufacturer Woodward 723PLUS
Standards EMI/RFI Susceptibility: Lloyd’s Register of Shipping, EN50081-2 and EN50082-2
Enclosure Type Metal for Hazardous Locations
Dimensions W41.28cm x L29.21cm x H6.04cm
Weight 2.95kg
Storage Temperature -55 to +105 °C
Operating Temperature -40 to +70 °C

Product Description

Part 8280-604 is a digital controller in the 723PLUS series. This unit has many features that are standard for controllers in this Woodward series, including some configurations to make the 8280-604 suitable for a range of applications. The 8280-604 is CE Compliant and CSA Certified. Additional compliance info can be found in 723PLUS hardware manual 02877.

Woodward model 8280-604 has multiple communication ports which are user configurable. RS-232, RS-422, or RS-485 communications are supported through two separate serial interfaces. Two LON channels can be used to connect LinkNet nodes to expand the control’s I/O ports. Alternatively, the LON channels can be used for Woodward LONTalk.

This 723PLUS control is a low-voltage model with an external power supply. The power supply of the low voltage 723PLUS control models is rated for 18–40 Vdc (24 or 32 Vdc nominal), requiring 40 W. High voltage 723PLUS control models are also available.

One or two proximity switches or magnetic pickups (MPUs) can be used with the 8280-604. There is a slightly different frequency range for each option. MPUs can be used for a speed input frequency range of 400 Hz to 15 kHz. Proximity switches have a 30 Hz to 15 kHz range. 30 Hz is the minimum frequency for steady-state speed control.

One excellent feature included with this model is its ability to be configured when it comes to the various time groups. The 8280-604 model can be configured to time groups of ten to eighty milliseconds. Information can be found in several bulletins from Woodward, which give general information on how this model will function alongside the 723 and 723PLUS models.

Frequently Asked Questions about 8280-604

Are there any jumpers available on the 8280-604 model?

Yes, there are ten two-position internal jumpers available on the 8280-604 model. All of the jumpers have different functions, but the initial descriptions of the jumpers are the same; for example, the JPR10 and JPR9 jumpers are labeled as analog output #1, but they have different functions. The function of the JPR9 jumper is to operate at 0-20 mA, with jumper JPR10 operating at 0-1 mA. Other jumpers that have similar descriptions are JPR5/JPR17 and JPR6/JPR18; these jumpers are labeled as speed sensor #1, with the function of JPR5/JPR17 being a proximity switch and JPR6/JPR18 being a magnetic pickup. For more information on the remaining internal jumpers and their functions, refer to Manual 26227 on page thirteen. 

Are there any limitations to the load-sharing and fuel-limiting functions on the 8280-604 unit?

There are some limitations to the load-sharing and fuel-limiting functions; one of the main limitations is that the rack calibration settings must be completely accurate, or these functions will malfunction. 

Reviews For 8280-604

Internal Review

The 8280-604 model is best used with other 723PLUS digital controls from Woodward. The model can be configured to perform a variety of functions. It can be configured to monitor and control processes in engine, plant, and marine applications. - AX Control Tech

Repair Services For 8280-604

Type Lead Time Price Action
Repair Service 1-2 weeks $1701

Our highly skilled technicians can repair your 8280-604. 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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