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3 year warranty

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A network of 8406-121 controls from Woodward is capable of controlling up to eight un-manned generator sets for backup power, baseload, or peak shaving applications.



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  • Part Number: 8406-121
  • SKU: 8406121WO
  • Manufacturer: Woodward
  • Series: Engine Generator Control Package

8406-121 Technical Specifications

Dimensions 282 x 358 x 69 mm
Display Type Two LCD\'s
Features Over/Under Alarm/Shutdown Settings for Oil, Water, and Battery
Input Voltage 50–150 Vac PT input, 9–32 Vdc (SELV), 24V Nominal
Operating Temperature –20 to +70 °C (–4 to +158 °F)
Standards Humidity 95% at 20 to 55 °C (68 to 131 °F)
Storage Temperature –40 to +105 °C (–40 to +221 °F)

Product Description

One of Woodward’s EGCP-2 microprocessor-based complete generator control and engine management packages, model 8406-121 is used to automate and protect gas or diesel engine-based generator sets.

Features of the 8406-121 include:

  • Engine Control
  • Gen-Set Synchronizing
  • Real (kW) Load Control
  • Reactive (kVAR) Control
  • Automatic Generator Sequencing (multiple units)
  • Gen-Set Protective Features
  • Engine Protective Features
  • Communication – PC Interface (complete details of the communication features may be found online in Communication Manual 26181)

The 8406-121 has an input voltage rating of 150–300 Vac PT Input, 9–32 Vdc, and an operating temperature rating of –20 to +70 °C. The storage temp rating is –40 to +105 °C. This unit measures 282 x 358 x 69 mm, which includes a front panel with a keypad and two backlit LCD display screens.

The two screens display operating information, status information, and tuning set points. The backlight remains lit while the engine speed is above 50 rpm. When the engine is not running, the backlight will turn off after 5 minutes of non-use. It will also turn off in the event of a drop in supply voltage to conserve power. Next to the display screens is a red LED, used to indicate alarm conditions and shutdown conditions.

Components needed for installation and remote communication are not shipped with the 8406-121 and must be ordered separately. EGCP-2 Engine Generator Control Package Manual 26174 can be found in our tabs above.

Reviews For 8406-121

Internal Review

The unit’s front panel screens provide eight lines of status Information, with the option of displaying four lines of configuration or Alarm Log information. These screens allow the user to monitor and tune related parameters at the same time. - AX Tech

Repair Services For 8406-121

Type Lead Time Price Action
Repair Service 1-2 weeks $2595

Our highly skilled technicians can repair your 8406-121. 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