Woodward L Series Installation And Operation Manual
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Woodward L Series Installation And Operation Manual

Integrated speed control
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Installation and Operation Manual
L-Series Integrated Speed Control
Manual 26250 (Revision H)

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  • Page 1 Installation and Operation Manual L-Series Integrated Speed Control Manual 26250 (Revision H)
  • Page 2 Revisions—Text changes are indicated by a black line alongside the text. Woodward Governor Company reserves the right to update any portion of this publication at any time. Information provided by Woodward Governor Company is believed to be correct and reliable. However, no responsibility is assumed by Woodward Governor Company unless otherwise expressly undertaken.

  • Page 3: Table Of Contents

    Fault Detection and Annunciation ................44 Faults ........................44 5. S ..............48 HAPTER ERVICE Introduction......................48 Description......................48 Getting Started .....................50 Monitoring the Driver ....................51 6. C ..............59 HAPTER ONFIGURATION Overview.......................59 Configuration Parameters ..................60 Load Configuration File to Control................84 Configuration Checks ...................85 Woodward...
  • Page 4 Electrical Troubleshooting Guide ..............107 9. S ..............109 HAPTER ERVICE PTIONS Product Service Options..................109 Returning Equipment for Repair................ 110 Replacement Parts .................... 111 How to Contact Woodward................111 Engineering Services..................112 Technical Assistance..................113 A. A ..........114 PPENDIX CRONYMS BBREVIATIONS B. L-S ........115...
  • Page 5 Figure 6-8. Configuration Editor—Discrete I/O Tab ..........77 Figure 6-9. Configuration Editor—Alarm/Shutdown Tab........80 Figure 6-10. Configuration Editor—Security Tab ..........82 Figure 6-11. Security Tab Set Password Pop-up..........83 Figure 6-12. Password Entry Prompt ..............83 Figure 6-13. Configuration Loading..............84 Figure 6-14. Direct Load of Configuration File .............84 Woodward...
  • Page 6 Figure 7-5. Service Tool—Manual Position Calibration selection ......93 Figure 7-6. Service Tool—Verify Position Calibration ..........94 Figure 7-7. Service Tool—Manual Position Calibration ........95 Figure 7-8. Service Tool—Manual Position Calibration Settings ......96 Figure 7-9. Service Tool—Auto Position Calibration..........97 Figure B-1. Bode Plot of L-Series Response ............ 119 Woodward...

  • Page 7: Regulatory Compliance

    2, Category 3 wiring methods as applicable, and in accordance with the authority having jurisdiction. Field wiring must be suitable for at least 105 °C. Connect ground terminal to earth ground. The actuator should be protected from exposure to sunlight and rain. Woodward...

  • Page 8: Electrostatic Discharge Awareness

    CAUTION—ELECTROSTATIC DISCHARGE To prevent damage to electronic components caused by improper handling, read and observe the precautions in Woodward manual 82715, Guide for Handling and Protection of Electronic Controls, Printed Circuit Boards, and Modules.

  • Page 9: Chapter 1. General Information

    Key environmental characteristics of these applications include extended industrial operating temperatures (–40 to +105 °C/–40 to +221 °F), industrial EMC requirements, electrical transients, and lower operating voltages (12/24 V). Woodward...

  • Page 10: Introduction

    The L-Series provides a building block approach to total engine management. The modular bi-directional actuator design easily attaches to fuel pumps, mixers, or throttle bodies. For information on Woodward throttle body applications, refer to manual 26249 (ITB and LC-50). Woodward also offers L-Series actuator versions for Position Control and Process Control, like Air/Fuel Ratio control, applications.

  • Page 11: Basic Control Options

    Programmable Features Control setup and tuning is accomplished through the use of a PC (personal computer), Woodward Service Tool software, and a programming harness. The features identified below are described in Chapters 2 and 4. Briefly, the programmable features include: •...

  • Page 12: Service Tool Software

    Calibrate the control for user stops In addition, the Service Tool can be configured to incorporate security to control access to and protect application settings where needed. Detailed descriptions of software features and installation are available in Chapters 4–7. Woodward...

  • Page 13: Chapter 2. Mechanical Installation

    Use of an external spring to return to minimum fuel is highly recommended. Failure to comply with this recommendation can cause personal injury and/or property damage. Use of a predicted min-fuel-shutdown procedure is highly recommended. Failure to comply with this recommendation can cause personal injury and/or property damage. Woodward...

  • Page 14: Unpacking

    Unpacking Be careful when unpacking the actuator. Check the unit for signs of damage, such as bent or dented panels, scratches, and loose or broken parts. Notify the shipper and Woodward if damage is found. Mechanical Installation Mounting Location NOTE To meet ATEX Hazardous Location requirements, the installer of the L-series must take responsibility for meeting Sub-Clause 26.3.3.1 of EN60079-15:2003...
  • Page 15 (Figure 2-3). In addition, six independent output shaft configurations are available (Figure 2-4). Consult Woodward applications engineering for the application appropriate seal and shaft configuration.

  • Page 16: Figure 2-1. Linkage Design Examples

    This non-linear linkage design essentially compensates the throttle body so the air/fuel flow looks linear from the control’s perspective. Woodward recommends that linkages use approximately 40 degrees of actuator shaft rotation, centered in the full 60-degree range.
  • Page 17 Minimizing the mass the actuator is required to support is essential in that excessive mass or vibration levels may damage the actuator’s rotor system and shorten the life of the actuator. Woodward...

  • Page 18: Figure 2-2. L-Series Outline Drawing

    L-Series Integrated Speed Control Manual 26250 Figure 2-2. L-Series Outline Drawing Woodward...

  • Page 19: Figure 2-3. L-Series Cover Types

    Manual 26250 L-Series Integrated Speed Control Figure 2-3. L-Series Cover Types Woodward...

  • Page 20: Figure 2-4A. L-Series Shaft Types

    L-Series Integrated Speed Control Manual 26250 Figure 2-4a. L-Series Shaft Types Woodward...

  • Page 21: Figure 2-4B. L-Series Shaft Types

    Manual 26250 L-Series Integrated Speed Control Figure 2-4b. L-Series Shaft Types Woodward...

  • Page 22: Figure 2-4C. L-Series Shaft Types

    L-Series Integrated Speed Control Manual 26250 Figure 2-4c. L-Series Shaft Types Woodward...

  • Page 23: Chapter 3. Electrical Installation

    • Installations with severe electromagnetic interference (EMI) may require additional shielding precautions. Contact Woodward for more information. Failure to provide shielding can produce future conditions which are difficult to diagnose. Proper shielding at the time of installation is required to assure satisfactory operation of the product.
  • Page 24 W12S-P012 Sockets 0462-201-16141 0462-201-16141 For convenience, Woodward part number 8928-396 is a kit that provides all the necessary Deutsch components. CAUTION—WIRING Due to the hazardous location listings associated with this product, proper wire type and wiring practices are critical to operation.

  • Page 25: Figure 3-1A. Typical L-Series Speed Control Application Wiring

    GROUND (PIN 3 OR PIN 5). USE WOODWARD KIT 8923-1061 TO CONNECT TO A COMPUTER FOR USE WITH THE SERVICE TOOL. SPEED INPUT IS ACCOMPLISHED BY USING EITHER THE MPU OR THE IGNITION INPUT. DO NOT CONNECT WIRES TO BOTH INPUTS SIMULTANEOUSLY.

  • Page 26: Description Of Electrical I/O

    L-Series actuator will not power-up and will remain at the minimum stop if attached to a throttle body with an internal return spring. Woodward recommends using a 6 A fuse on the power supply line feeding pin 1 of the L-Series actuator. Woodward...

  • Page 27: Figure 3-2. Correct And Incorrect Wiring To Power Supply

    Normally associated with connection to engine skid or vehicle frame. In the case of the L- Series, it also represents system ground. Protective Earth Ground. Normally used as a safety ground in high-voltage (> 42V) systems. (Not applicable to L-Series Controls) Woodward...

  • Page 28: Figure 3-3. Mpu Speed Sensing Input

    The input must be wired to the appropriate input and must be configured properly using the Service Tool prior to operation. See Woodward manual 82510, Magnetic Pickups and Proximity Switches for Electronic Controls, for information about MPUs and installation of the pickup unit.

  • Page 29: Figure 3-4. Proximity Probe Speed Sensing Input

    Figure 3-5. Ignition Speed Sensing Input WARNING—UNDETECTED FAULTS It is recommended that the actual engine speed be used to externally verify that the speed command matches the command signal sent. Failure to comply with this recommendation can result in undetected system faults. Woodward...

  • Page 30: Figure 3-6. Tps Output

    1.5 V, and it is available to power external relays for devices such as alarms or fuel shutoff solenoids. The circuit is protected internally against over- current and inductive spikes, so external clamping is not necessary. Woodward...

  • Page 31: Figure 3-7. Relay Driver Output

    Installation of a fuse on the power ground wire to pin 5 would provide protection to these pins but does not mean a fuse is not needed in the power connection. Pin 1 (B+) still needs protection against a short to ground. Woodward...
  • Page 32 Aux 2. When used as a service port, the analog and discrete functions will not work. Woodward recommends that the service port not be connected during normal use. It is intended for system setup and troubleshooting only.

  • Page 33: Figure 3-8. Typical Aux Input Usage

    RS-232 communications are available on the L-Series when used with an external transceiver connected to pins 4 and 6. Serial communications allow for the use of a service and configuration tool with the L-Series actuator. The simplest way to establish this interface is to use Woodward kit # 8923-1061. Woodward...
  • Page 34 These pins are for serial communication with the L-Series actuator. An external RS-232 transceiver is necessary to make communications possible with the Woodward L-Series Service Tool. A connectivity kit can be purchased from Woodward to accomplish this. Further instructions for using this connectivity kit are provided in Chapter 4.

  • Page 35: Figure 3-9. Ground Junction Point

    NOT AN INTERNAL CONNECTION TO CIRCUIT GROUND. Terminal pins 3 and 5 must be used for access to the circuit ground. This junction point is completely electrically isolated from the L-Series actuator’s electronics, and is solely for convenience during installation. Ground Junction Figure 3-9. Ground Junction Point Woodward...

  • Page 36: Chapter 4. Description Of Operation

    The control provides a communications port which can be used as an RS-232 serial interface. The RS-232 port is the service port used by the L-Series Service Tool to configure and tune the L-Series system. Woodward...

  • Page 37: System Operation

    The user can choose all or none of the fuel limiter functions, speed setpoint modifiers, alarm/shutdown functions, security and logic functions depending on the application. The control I/O consists of input power, a speed input, 4 configurable aux inputs, a status output, and an actual position indication (see Figure 4-1). Woodward...

  • Page 38: Speed Control Functions

    A 0 to 5 Vdc analog input provides for remote speed setpoint control. A ±3 Vdc analog input provides for isochronous load-sharing and synchronizer control. Figure 4-2 provides a detailed overview of the setpoint modes and rates available. Woodward...

  • Page 39: Figure 4-2 Speed Setpoint Actions And Rates

    Manual 26250 L-Series Integrated Speed Control Figure 4-2 Speed Setpoint Actions and Rates Woodward...
  • Page 40 Start-up Select—When run speed is reached speed setpoint will ramp to Rated 1 or Rated 2 setpoint depending on the state of the Rated 1/Rated 2 discrete input. After run speed is reached the Rated 1/Rated 2 discrete input will have no effect until speed is below the stopping speed. Woodward...
  • Page 41 Up to a five-speed select can be used if the Raise and Lower commands are configured and used as position selectors. When using Raise or Lower selections, the control ramps the speed setpoint at the raise or lower rate settings. This option may be desirable if another rate is needed. Woodward...
  • Page 42 Droop is off at start-up, and is enabled at speeds above Idle. A user-definable discrete input, configured as Droop, can optionally be used to transfer between droop and isochronous control. Woodward...

  • Page 43: Figure 4-3. 5% Droop Example

    When the generator breaker is open, the analog input is used for synchronizing. When the generator breaker is closed, this analog input is used for isochronous load sharing within a generator system. An isochronous load sharing module/synchronizer must be connected to provide the isochronous load sharing/synchronizer functions. Woodward...

  • Page 44: Figure 4-4 Remote Speed Setpoint

    –3 V corresponds to the full bias percentage in a negative direction (assuming the input is not configured with the invert option). This analog input will be available to interface with Woodward’s standard Load Sharing Module. This auxiliary input acts directly on the L-Series speed reference and biases it by a programmable amount up to approximately ±7% in direct...

  • Page 45: Speed Control Dynamics

    Separate common gain settings are provided for each curve to shift all gain curve gains higher or lower. Idle/Rated Dynamics Curve is useful for non-linear fuel systems that tend to be less stable at reduced speed and load operation with optimum rated dynamic curve settings. Woodward...

  • Page 46: Figure 4-5. Dual Gain Settings

    The primary gain setting is restored once the control senses a return to steady-state operation (see Figure 4-5). Setting the gain ratio to 1 disables the function. Figure 4-5. Dual Gain Settings Woodward...

  • Page 47: Start Fuel Limiting

    The start sequence will work the same as with only one start fuel setting, but once engine speed is above the Start2 Speed setting, the fuel demand starts ramping to the SFL2 limit at the configured actuator ramp rate. Woodward...

  • Page 48: Runtime Fuel Limiting

    The fuel limits are restored once the Transient Fuel Limit time period expires. The transient fuel limit cannot be increased above 100 % fuel demand. The Transient Fuel Limit is not active below the Run Speed setting. Woodward...

  • Page 49: Figure 4-8. Boost (External) Fuel Limit Curve

    4-9. The engineering units for each breakpoint are in percent and rpm. Each speed entry must be equal to or higher than the previous entry. The limiter must be carefully set since excessive fuel limiting reduces load-carrying capability. The runtime fuel limiter is not active below the run speed setting. Woodward...

  • Page 50: Temperature Sensing

    117 °C down to zero current at 125 °C. At 125 °C, an OverTemp fault is annunciated. Depending on the current (actuator torque) and ambient operating temperatures, the unit may never reach a reduced level. Woodward...

  • Page 51: Control Modes

    Running Idle Indicates the speed setpoint is at the configured Idle speed setting. To leave this state, the rated command must be issued. Woodward...

  • Page 52: Fault Detection And Annunciation

    Each fault can also independently be set to change the state of the discrete output. The shutdown action performed is fault-dependent. Some faults are dedicated as alarms or shutdowns and cannot be configured—they are identified as such below. Each possible fault is described below. Woodward...
  • Page 53 Above 125 °C, the processor can fail in an unpredictable manner, so this fault is recommended as a shutdown. The Current Limiting based on temperature will effectively make the output "limp" by reducing the drive current to zero. Failure levels: >125 °C Persistence: 650 ms Hysteresis: 5 °C (<120 °C to clear) Woodward...
  • Page 54 Can be configured as an alarm or shutdown. If configured as a shutdown, the control will drive to Fail Direction (using position control) if this fault is detected. If configured as an alarm, the control will attempt to continue normal operation if this fault is detected. Woodward...
  • Page 55 Can be configured as an alarm or shutdown. If configured as a shutdown, the control will drive to Fail Direction (using position control) if this fault is detected. If configured as an alarm, the control will attempt to continue normal operation if this fault is detected. Woodward...

  • Page 56: Chapter 5. Service Tool

    L-Series through connector pins 4 and 6. An external RS-232 transceiver is necessary to make communications possible with the Woodward L-Series service tool. A connectivity kit (Woodward # 8923-1061) can be purchased from Woodward to accomplish this.

  • Page 57: Figure 5-2A. Programming Harness Connections

    In addition to the hardware, the following are the distributions of tool software needed to communicate with the control: • Woodward part number 9927-1222, L-Series Service Tool *—CAUTION—SERIAL PORT DAMAGE There is a potential for serial port damage when communicating with the L-Series control.

  • Page 58: Getting Started

    Manual 26250 Figure 5-2b. Programming Harness Wiring Getting Started Installation Procedure The Service Tool software can be downloaded and installed from the Woodward internet site (www.woodward.com/software). What to do Next After the software is installed, connect a serial communications cable between the RS-232 connections on the L-Series control and an unused serial port on your computer.

  • Page 59: Monitoring The Driver

    The software version is identified as the ‘Software Part Number’ on the Service Tool screen. The Service Tool and Control must be connected to view this information. Refer to this version information in any correspondence with Woodward. Service Tool Security Various levels of security are available to protect application settings.
  • Page 60 One or more shutdowns on the Shutdowns or Internal Shutdowns screen is active. Overview Parameters Screen To monitor the overview parameters, go to the Overview page on the main window. This screen dynamically populates based on the unit’s configuration. If a function is not programmed, then it will not appear. Woodward...

  • Page 61: Figure 5-3A. Service Tool-Overview Tab

    Manual 26250 L-Series Integrated Speed Control Figure 5-3a. Service Tool—Overview Tab Figure 5-3b. Service Tool—Overview Tab (5418-2193 software only) Woodward...
  • Page 62 The Shutdown and Alarm screens display the status of both active and logged fault conditions. The logged indications provide a history of events even after the unit has been power-cycled or run again. Indicates a logged alarm condition. Indicates an active alarm condition. Indicates a logged shutdown condition. Woodward...

  • Page 63: Figure 5-4. Service Tool-Alarms Tab

    To monitor the alarm conditions, go to the Alarms page on the main window. The values displayed on this screen dynamically change with the fault configuration. Refer to Chapter 4 for a complete listing and details of all the faults. Figure 5-4. Service Tool—Alarms Tab Woodward...

  • Page 64: Figure 5-5. Service Tool-Shutdowns Tab

    If a fault condition occurred but is no longer present, it will remain as a logged fault until cleared. The ‘Reset Logged Alarms and Shutdowns’ command will clear all logged faults. Figure 5-5. Service Tool—Shutdowns Tab Figure 5-6. Service Tool—Internal Shutdowns Tab Woodward...

  • Page 65: Figure 5-7. Service Tool-Simulated I/O Tab

    Service Tool. The Aux 3 & 4 Simulated Analog inputs simulate a fixed-value analog input signal, in percentage, and the discrete inputs can be simulated as closed (checked) and open (unchecked) using the Simulated Discrete Input checkboxes. Figure 5-7. Service Tool—Simulated I/O Tab Woodward...

  • Page 66: Figure 5-8. Service Tool-Identification Tab

    The Software Part Number identifies the embedded firmware part number and revision. The Serial Number is a Woodward tracking tool and is set at the factory. The Configuration Identifier displays the first 8 characters of the loaded configuration file, and the Date of Last Configuration Change can be used to track changes to product configuration settings.

  • Page 67: Chapter 6. Configuration

    The OEM can save configuration file specific data with the service tool by selecting Properties under the File menu pull down. This is a text field and can be used to store data such as: • Customer • Engine Type • Application Type • Notes Woodward...

  • Page 68: Configuration Parameters

    Figure 6-1. Configuration Selection Options Configuration Parameters There are 9 different screens that display the configuration settings in the L-Series speed control: Overview, Setpoint, Control, Modifiers, Fuel Limiting, Dynamics, Discrete I/O, Alarm/Shutdown, and Security. Woodward...

  • Page 69: Figure 6-2. Configuration Editor-Overview Tab

    Identification tab of the Service Tool. Engine Type Set to either 2-stroke or 4-stroke. Number of Cylinders Sets the number of cylinders. From the sample table below, select the value that corresponds to the number of crankshaft degrees between ignition pulses. Allowed values: 1—20 Woodward...
  • Page 70 Sets the position control PID’s proportional gain. Increased gain corresponds to increased PID output (higher proportional = faster response). This setting can also be dynamically adjusted using the PID Tuning screen. If unsure, a typical value would be 11.8 . Allowed values: 0–100% Woodward...

  • Page 71: Figure 6-3. Configuration Editor-Setpoint Tab

    (with the exception of the mode) can also be modified from the Edit Speed Settings selection under the Tools menu (refer to Chapter 7, Editing of Speed Settings). Figure 6-3. Configuration Editor—SETPOINT TAB Woodward...
  • Page 72 Setpoint ramp rate, in rpm/sec, when decreasing to a rated setpoint. Allowed values: 1–1000 rpm/s. Ramp Rate to Idle Setpoint ramp rate, in rpm/sec, when idle speed is selected. Only displayed if Idle is used. Allowed values: 1–1000 rpm/s. Woodward...

  • Page 73: Figure 6-4. Configuration Editor-Control Tab

    The L-Series speed settings must follow the following general order. Start Start Stop Rated Speed Speed Speed Speed Speed Overspeed Start Speed Hysteresis Normal Operating Speeds Starting the Engine The engine starting sequence will look like this, if no errors are detected: Woodward...
  • Page 74 Allowed values: 50% of Start Speed 1 to ‘Start Speed 1 Threshold’ in 8 rpm increments. Start Fuel 1 Specifies the maximum permitted shaft position when the governor state is ‘Start Fuel 1’. Typical value is the same as the full load actuator position. Allowed values: 0–100% Woodward...
  • Page 75 Below the Stop Speed Threshold, the control will not allow the engine to restart. Allowed values: Must be greater than ‘Start Speed Threshold’ and less than ‘Run Speed Threshold’, in 8 rpm increments. Woodward...
  • Page 76 Governing Error High speed range persistence, in seconds, prior to indicating a fault. Allowed values: 0–400 s Overspeed Threshold Specifies the speed level that will trigger an overspeed shutdown fault. Allowed values: 0–4080 rpm, but must be greater than Rated Woodward...

  • Page 77: Figure 6-5. Configuration Editor-Modifiers Tab

    Allowed values: 0% up to the ‘Full Load’ setting Full Load Sets the full load actuator position percentage for the droop function. Allowed values: From the ‘No Load’ setting up to 100% Woodward...
  • Page 78 Remote Speed Setpoint–biasing values are set to a specific speed range (1000 to 2000 rpm). Bias Limit Specifies the maximum desired speed band possible, as a percentage of Rated, possible with the Raise/Lower Adjust or Analog functions. Allowed values: 0–100% of speed setpoint Woodward...

  • Page 79: Figure 6-6A. Configuration Editor-Fuel Limiting Tab (5418-1680 And -2226 Software Versions)

    3% below the desired minimum speed setting when using AUX1. Aux 2–4 do not exhibit this limitation. Fuel Limiting Tab The fuel limiting tab provides run time and boost fuel limiting configuration settings. Figure 6-6a. Configuration Editor—Fuel Limiting Tab (5418-1680 and -2226 software versions) Woodward...

  • Page 80: Figure 6-6B. Configuration Editor-Fuel Limiting Tab (5418-2193 Software Only)

    L-Series Integrated Speed Control Manual 26250 Figure 6-6b. Configuration Editor—Fuel Limiting Tab (5418-2193 software only) Figure 6-6c. Configuration Editor—Fuel Limiting Tab (5418-2193 software only) Woodward...
  • Page 81 Allowed values: 0–100% Transient Fuel Limit Sets the maximum actuator position during a transient where the fuel demand is above the Steady State Fuel Limit. Only displayed if the mode is set to Runtime Fuel Limiting with Transients. Allowed values: 0–100% Woodward...
  • Page 82 Allowed values: Each point [5] must be larger than the previous and less than the next value, in increments of 1.2 percent. Limit (%) Sets the maximum actuator positions [5] based on the boost analog input. Allowed values: 0–100% Woodward...

  • Page 83: Figure 6-7. Configuration Editor-Dynamics Tab

    Allowed values: 0–300 s Delay switch (between Dyn 1 and Dyn 2) The delay, in seconds, before the dynamics actually changes to the selected set (either from dynamics 1 to dynamics 2 or vice versa). Allowed values: 0–425 s Woodward...
  • Page 84 Gain Ratio Speed control PID gain ratio. When the speed error is greater than the window, the Gain is multiplied by the Gain Ratio. To disable the dual gain window, set the Gain Ratio to 1. Allowed values: 1–15 Woodward...

  • Page 85: Figure 6-8. Configuration Editor-Discrete I/O Tab

    Speed control PID common gain. This setting is a multiplier on the entire gain curve settings. A Common Gain setting of 1 provides no bias. Allowed values: 0–8 Discrete I/O Tab The Discrete I/O tab provides discrete input and discrete output configuration settings. Figure 6-8. Configuration Editor—Discrete I/O Tab Woodward...
  • Page 86 Select the desired input for this function. Droop Select the desired input for this function. Run Enable Select the desired input for this function. WARNING—FAULT PROTECTION It is recommended that all inputs be configured for the failsafe ‘Active Closed’ mode, to ensure maximum fault protection. Woodward...
  • Page 87 NOTE The selection for Loss of Speed Input is incorrectly shown/listed as Position Demand Failed. This will be corrected in the next Service Tool release. The ‘At Minimum Fuel Limit’ selection is only available in software version 5418-2193. Woodward...

  • Page 88: Figure 6-9. Configuration Editor-Alarm/Shutdown Tab

    Fault section in the manual (Chapter 4). • Temperature Sensor Failed • Supply Voltage Fault • Relay Fault • Over Temperature • Position Error • Governor Error High Speed • Governor Error Low Speed • At Minimum Fuel Limit (5418-2193 software only) Woodward...
  • Page 89 Position Error Maximum Sets the magnitude of the position error fault. Allowed values: 0–100% of stroke Position Error Delay Sets the delay that the position error must persist before indicating a position error fault. Allowed values: 0–10 s Woodward...

  • Page 90: Figure 6-10. Configuration Editor-Security Tab

    This is the minimum level of protection and is required in order to use any other security option. Configuration Load When checked, requires a password before a configuration can be loaded into the L-Series control (protects Load to Control execution). Woodward...

  • Page 91: Figure 6-11. Security Tab Set Password Pop-Up

    PID (protects Edit Position PID screen). Position Calibration When checked, requires a password before the position calibration mode can be entered (protects Manual and Automatic Position Calibration screens). Figure 6-11. Security Tab Set Password Pop-up Figure 6-12. Password Entry Prompt Woodward...

  • Page 92: Load Configuration File To Control

    If the control that is being downloaded to already contains a configuration with password protection enabled for configuration loads, that password is still required. This option is only available in Service Tool version 2.1 and newer. Woodward...

  • Page 93: Configuration Checks

    Dynamics modes has been detected. To use the Rated curve dynamics option for dynamics 2, the Rated curve or Idle/Rated curve option must be selected for dynamics 1. See the Dynamics tab. Woodward...
  • Page 94 Speed setpoint and Lower Speed discrete input is detected. To use the Speed Setpt Analog or Raise/Lower option, the Lower discrete input cannot be Always Off or Always On. See the Setpoint and Discrete I/O tabs. Woodward...
  • Page 95 3. Multiple functions configured for Aux3 input–This indication is provided to make sure the Aux3 input was configured as expected. 4. Multiple functions configured for Aux4 input–This indication is provided to make sure the Aux4 input was configured as expected. Woodward...

  • Page 96: Chapter 7. Setup And Tuning

    PID output. The Speed PID Dynamics screen (Figure 7-1) is opened by selecting ‘Edit Speed Dynamics’ under the ‘Tools’ menu. Pressing the Properties button pops open the Properties Window. From this window the user can adjust the trending window properties including the speed range, update rate and display range. Woodward...

  • Page 97: Editing Of Configuration Settings

    Security tab in the Configuration Editor. The settings available are dependent on software version and configured options. The Modifiers tab is only available in Service Tool version 2.1 and newer. For details on the parameters that appear in this window, refer to Chapter 6. Woodward...

  • Page 98: Figure 7-2A. Edit Configuration Settings Menu (5418-2193 Software Only)

    L-Series Integrated Speed Control Manual 26250 Figure 7-2a. Edit Configuration Settings Menu (5418-2193 software only) Figure 7-2b. Speed Input Window (5418-1680 and -2226 software versions) Woodward...

  • Page 99: Tuning The Position Pid

    Use this command to create step changes for the PID and monitor the response using the displayed trend. Pressing the Properties button pops open the Properties Window (Figure 7-4). From this window the user can adjust the trending window properties including the update rate and display range. Woodward...

  • Page 100: Figure 7-3. Service Tool-Pid Tuning Window

    L-Series Integrated Speed Control Manual 26250 Figure 7-3. Service Tool—PID Tuning Window Figure 7-4. Service Tool—PID Tuning Properties Window Woodward...

  • Page 101: Position Calibration And Verification

    3. Select Direction. 4. Enter the pre-determined rotational travel limits values. 5. When completed, cycle the power on the L-Series. 6. It is recommended that a Position Verification be performed to confirm the calibration is correct. See Position Verification below. Woodward...

  • Page 102: Position Verification

    If the full factory position calibration range is not being used (the Manual or Automatic Calibration has been performed) and the minimum position direction is changed, the calibration must be run again for the Verify Position mode to work correctly. Figure 7-6. Service Tool—Verify Position Calibration Woodward...

  • Page 103: Figure 7-7. Service Tool-Manual Position Calibration

    To find the minimum and maximum soft stops use the verify position mode described above to position the valve and use the Full Travel Actual Position reading for minimum and maximum position values. NOTE After leaving this mode, power must be cycled for the new settings to take effect. Woodward...

  • Page 104: Figure 7-8. Service Tool-Manual Position Calibration Settings

    The control is now moving first to the ccw stop and then to the cw stop to get the physical minimum and maximum positions. NOTE After leaving this mode, power must be cycled for the new settings to take effect. Woodward...

  • Page 105: Figure 7-9. Service Tool-Auto Position Calibration

    Manual 26250 L-Series Integrated Speed Control Figure 7-9. Service Tool—Auto Position Calibration Woodward...

  • Page 106: Chapter 8. Troubleshooting

    For more detailed information about governor system failure modes and effects, contact Woodward for a copy of the system DFMEA. The troubleshooting scenarios listed below assume that the end user has a digital multimeter at his disposal for testing voltages and checking continuity, and assume that the application has been engineered and tested thoroughly.

  • Page 107: General System Troubleshooting Guide

    The following is a general troubleshooting guide for areas to check which may present potential difficulties. By making these checks appropriate to your engine/turbine before contacting Woodward for technical assistance, your system problems can be more quickly and accurately assessed.
  • Page 108 Incorrect mode of AUX inputs shorted or open Disconnect starter motor solenoid. Disconnect operation (speed, speed harness from governor. Check for correct bias function, dynamics) voltage level between AUX pin(s) under question and ground pin for known application modes. Woodward...
  • Page 109 The Raise input is also active and Set the lower input to the correct state. The the analog Raise Lower is engine will not lower the speed setpoint. configured. The control is in analog mode. Woodward...
  • Page 110 Verify harness setup and connections (see Chapter 4). The wrong communication port has Check that Service Tool is running. been selected. Verify the port setting is correct. Check fuse, wiring, and battery voltage. Connect the service tool by using the connect menu. Woodward...

  • Page 111: Troubleshooting Diagnostic Fault Flags

    Service Tool not Old version of Service Tool or file Re-install Service Tool, get the latest version communicating–‘Error corruption or bad install. from the Woodward web site message displayed on (www.woodward.com/software) PC when trying to connect Service Tool will not Cap Lock is on.
  • Page 112 Zero percent position will not set up the actuator correctly. 0% completely close the fuel valve. will close fuel valve. The linkage is moved or Fix or replace linkage. disconnected. The engine is not responding Check with the engine correctly. troubleshooting manual. Woodward...
  • Page 113 Check all mechanical linkages and stops. Verify Configuration errors settings. Position Sensor If the internal position Internal failure of position sensor. Return unit to Woodward. Failure sensor is outside the diagnostic limits. Internal Shutdown All internal shutdowns will The Control is defective.
  • Page 114 The software is disrupted by EMI or This is an abnormal situation. an internal component failure. Return the unit to Woodward. Overtemperature High internal temperature. Detection of high of temperature. Check ambient temperature around Control.

  • Page 115: Electrical Troubleshooting Guide

    If the L-Series control has any alarm or shutdown conditions, refer to Chapter 4 for details on the exact cause of the condition. The Service Tool must be used to determine the cause of any shutdown or alarm condition. Woodward...
  • Page 116 • Check that Service Tool is running. Verify the Port setting is correct. • Follow on-screen error messages. Re-install software as needed. The latest version of software is available for download from the Woodward web site (www.woodward.com/software). Woodward...

  • Page 117: Chapter 9. Service Options

    There are no serviceable parts on the L-Series. The following factory options are available for servicing Woodward equipment, based on the standard Woodward Product and Service Warranty (5-01-1205) that is in effect at the time the product is purchased from Woodward or the service is performed: •...

  • Page 118: Returning Equipment For Repair

    Returning Equipment for Repair If a control (or any part of an electronic control) is to be returned to Woodward for repair, please contact Woodward in advance to obtain a Return Authorization Number. When shipping the item(s), attach a tag with the following information: •...

  • Page 119: Replacement Parts

    To expedite the repair process, contact Woodward in advance to obtain a Return Authorization Number, and arrange for issue of a purchase order for the item(s) to be repaired. No work can be started until a purchase order is received.

  • Page 120: Engineering Services

    L-Series Integrated Speed Control Manual 26250 Engineering Services Woodward Industrial Controls Engineering Services offers the following after- sales support for Woodward products. For these services, you can contact us by telephone, by email, or through the Woodward website. • Technical Support •...

  • Page 121: Technical Assistance

    Type of Fuel (gas, gaseous, steam, etc) Rating Application Control/Governor Information Please list all Woodward governors, actuators, and electronic controls in your system: Woodward Part Number and Revision Letter Control Description or Governor Type Serial Number Woodward Part Number and Revision Letter...

  • Page 122: Appendix A. Acronyms/Abbreviations

    Isoch isochronous integrated throttle body L-Series Woodward electronic engine governor that contains both a rotary actuator and a control circuit board magnetic pick up original equipment manufacturer pulse-width modulated revolutions per minute RS-232...

  • Page 123: Appendix B. L-Series Control Specifications

    NOTE The specifications above are for naturally aspirated engines. Turbo-diesel applications can vary in the amount of load that can be picked-up within these specifications. Contact Woodward or consult ISO3046-4 and/or ISO8528-5 with questions about turbo specifications. Recovery Time 3 seconds...
  • Page 124 ±1.3% of full scale over the temperature range of –40 to +125 °C, including drift I/O Latency 6.5 ms Calibration Method 2-point linear software calibration Out of Range Signal none Overvoltage Protection Input protected against 32 Vdc steady state Woodward...
  • Page 125 Input Threshold (AUX 1) > 3.1 Vdc = “ON”; < 0.8 Vdc = “OFF” Input Thresholds (AUX 2-4) > 2 Vdc = “ON”; < 0.8 Vdc = “OFF” Input Impedance Aux 1: 10 kΩ; Aux 2,3,4: 499 kΩ Woodward...
  • Page 126 Software Execution Rates Software Routine Nominal Software Execution Rate Position Control Algorithms 1.6 ms Speed Input & Control Algorithms 6.5 ms Analog Input Logic 6.5 ms Serial Port background task Discrete Inputs 6.5 ms Discrete Output 6.5 ms Diagnostics 6.5 ms Woodward...

  • Page 127: Figure B-1. Bode Plot Of L-Series Response

    Manual 26250 L-Series Integrated Speed Control Figure B-1. Bode Plot of L-Series Response Woodward...

  • Page 128: Declarations

    Declarations...
  • Page 130 Phone +1 (970) 482-5811 • Fax +1 (970) 498-3058 Email and Website—www.woodward.com Woodward has company-owned plants, subsidiaries, and branches, as well as authorized distributors and other authorized service and sales facilities throughout the world. Complete address / phone / fax / email information for all locations is available on our website.

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