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Woodward 723PLUS - User Manual

Woodward 723PLUS
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Installation and Operation Manual
723PLUS Digital Speed Control
for Reciprocating Engines—
Analog Load Sharing
8280-414, 8280-415, 8280-480, 8280-481
Manual 02879 (Revision A)

Table of Contents

Other manuals for Woodward 723PLUS

Questions and Answers

  • E
    Emily StevensAug 17, 2025
    Why is the speed of my Woodward 723PLUS Controller engine not regulated?
    • V
      Victor RoseAug 17, 2025
      If your Woodward Controller engine speed is not regulated, verify the actuator is capable of reaching the minimum and maximum fuel rack positions, as the issue may be due to improper linkage adjustment.
  • D
    Donna MitchellAug 20, 2025
    Why does my Woodward 723PLUS Controller engine overspeed or smoke excessively on startup?
    • M
      Marcus SkinnerAug 20, 2025
      If your Woodward Controller engine overspeeds on start or causes excessive smoke, it might be due to the start fuel limit being set too high. To resolve this, reduce the start fuel limit to a level slightly above (10%–20%) the percent actuator driver level needed to run the engine at idle speed.
  • R
    Russell GouldAug 22, 2025
    What to do if Woodward 723PLUS Controller engine won't start but the actuator moves to the start fuel position?
    • D
      Dawn LaraAug 22, 2025
      If your Woodward Controller engine will not start and the actuator is moving to the start fuel position, check that the linkage from the actuator to the fuel rack is properly connected. Also, check the start fuel limit level, as it might be set too low.
  • P
    Preston Valenzuela MDAug 25, 2025
    What to do if Woodward 723PLUS Controller engine won't start and actuator isn't moving to start fuel position?
    • S
      savilaAug 26, 2025
      If your Woodward Controller engine will not start and the actuator is not moving to the start fuel position, the cause might be no or incorrect power supply voltage if the CPU OK LED is not illuminated. Additionally, verify the actuator voltage output from the 723PLUS control during cranking; it should not remain at 0 Vdc (forward acting) or 7 Vdc (reverse acting).
  • L
    larryallenAug 27, 2025
    Why does my Woodward 723PLUS engine overspeed on start?
    • S
      Stephen WilliamsAug 28, 2025
      If your Woodward Controller engine overspeeds on start, it could be due to an actuator and/or linkage problem. Verify that the fuel rack is not binding and the linkage is properly adjusted.
  • E
    erika60Aug 30, 2025
    How to fix Woodward 723PLUS when POWER SUPPLY OK LED is not illuminated?
    • S
      Stephanie MillsAug 30, 2025
      If the POWER SUPPLY OK LED on your Woodward Controller is not illuminated, it indicates a failed power supply. Replace the 723PLUS control.
  • K
    kevinsmithSep 2, 2025
    How to troubleshoot unequal torque sharing in Woodward Controller engines?
    • D
      donna22Sep 2, 2025
      If your Woodward Controller engines do not share torque equally, verify the torque inputs are equal (±2.5%) with the hand held programmer. The cause might be improper torque sensor transducer or default percent actuator calibration.
  • M
    Mark RodriguezSep 5, 2025
    What causes a Woodward 723PLUS Controller engine to be unstable and erratic?
    • L
      Lance SanfordSep 5, 2025
      If your Woodward Controller engine will not stabilize and the control is erratic or varies with load, verify the proper dynamics are being adjusted at the proper time. The cause might be speed control dynamics adjustments.
  • T
    Taylor SmithSep 7, 2025
    Why doesn't my Woodward Controller engine respond to remote reference changes?
    • D
      Dustin LeeSep 7, 2025
      If your Woodward Controller engine does not accelerate and/or decelerate when the remote reference is moved, it may be because the unit is clutched in as a slave or appears to be clutched in as a slave. If the unit is clutched in last, it becomes the slave unit.
  • S
    Sherry LowerySep 12, 2025
    What does a CPU watchdog fault mean on a Woodward 723PLUS?
    • Y
      ysanchezSep 12, 2025
      If a CPU watchdog fault occurs in your Woodward 723PLUS Controller, it generally indicates a CPU failure. In this case, the 723PLUS control will need to be replaced.

Summary

723 PLUS Digital Speed Control Manual

Chapter 1: General Information

Application Overview

Details the control's use in generator set applications.

Control Hardware Options

Lists available hardware configurations and voltage ranges.

Chapter 2: Electrostatic Discharge Awareness

ESD Handling Precautions

Steps to minimize or eliminate electrostatic discharges when working with the control.

Chapter 3: Installation

Installation Power Requirements

Specifications for input voltage and power consumption.

Electrical Connection Details

Details on external wiring and shielding requirements.

Communication Port Configuration

Details on serial ports for PC and Modbus communication.

Installation Checkout Procedure

Steps to verify installation before set point entry.

Chapter 4: Entering Control Set Points

Watch Window PC Interface

Software for setup, testing, and troubleshooting via PC.

Hand Held Programmer Usage

Usage and navigation of the handheld programming terminal.

Configuration Menu Details

Details of various configuration options and settings.

Chapter 5: Initial Adjustments

Initial Start-up Adjustments

Procedures for initial engine start-up and control calibration.

Engine Dynamic Adjustments

Tuning parameters to optimize engine speed response and stability.

Chapter 6: Description of Operation

Fuel Control Operation

How the control manages fuel delivery for stable engine operation.

Control Dynamics Explained

Explanation of constant and variable dynamics for engine response tuning.

Load Control Modes

Modes and operation for controlling generator load.

Chapter 7: Troubleshooting

Control Test and Calibration Procedures

Procedures for testing and calibrating the control system.

Chapter 8: Service Options

Returning Equipment for Repair

Guidelines for sending controls back for service.

Appendix B: LinkNet I;O Network

I;O Module Specifications

Technical details and requirements for LinkNet I/O modules.

LinkNet Module Descriptions

Explains the functionality and behavior of different LinkNet modules.

Appendix D: Programming Checklist

Programming Checklist: Configure Menus

List of configuration menu items for recording settings.

Programming Checklist: Service Menus

List of service menu items for recording settings.

723 PLUS Control Specifications

Control Input Specifications

Specifications for various analog and discrete inputs.

Control Output Specifications

Specifications for analog and relay outputs.

Woodward 723PLUS Specifications

General IconGeneral
Output Voltage24V DC
ApprovalsCE, UL, CSA
TypeDigital Controller
Operating Temperature-40 to 70 °C
Communication ProtocolsModbus RTU, CAN
OutputsAnalog and Digital Outputs
ProtectionOvervoltage
ApplicationsIndustrial
ActuationElectric
RedundancyOptional redundancy configurations available

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