Woodward ECM3 Installation Manual
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Woodward ECM3 Installation Manual

Electronic fuel injection control
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Installation Manual
ECM3
Electronic Fuel Injection Control
for MHI Engines
Manual 26349
TP-6645

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Summary of Contents for Woodward ECM3

  • Page 1 Installation Manual ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 TP-6645...
  • Page 2 NOTE—provides other helpful information that does not fall under the warning or caution categories. 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

    Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines Contents ................. EGULATORY OMPLIANCE ..........LECTROSTATIC ISCHARGE WARENESS 1. G ............1 HAPTER ENERAL NFORMATION Introduction......................1 Input/Output Arrangement..................1 Control Specifications.....................2 2. I ................4 HAPTER NSTALLATION Introduction......................4 Unpacking the Shipping Carton................4 General Installation Notes and Warnings...............4...
  • Page 4 ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 Contents A. C ...........82 PPENDIX ONNECTOR NFORMATION Recommended Wire Size and Types..............83 Wire Gauge—AWG to Metric Comparison............84 B. C ..........85 PPENDIX OMMISSIONING ROCEDURE Control I/O Commissioning...................85 EFI Valve Commissioning ..................85 C.
  • Page 5 Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines Illustrations and Tables Figure 2-34. CAN cable cross-section ..............49 Figure 2-35. CAN System Wiring Example ............50 Figure 2-36. CAN-1 Wiring Diagram ..............52 Figure 2-37. CAN-2 and CAN-3 Wiring Diagram ..........53 Figure 3-1.
  • Page 6 ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 Illustrations and Tables Table 2-33. Serial Cable Requirements ...............46 Table 2-34. CAN Specification ................48 Table 2-35. Cable Specification ................49 Table 2-36. CAN-1 Wiring Limitations ..............52 Table 2-37. Engine CAN Connections ..............53 Table 3-1.

  • Page 7: Regulatory Compliance

    This product is certified as a component for use in other equipment. The final combination is subject to acceptance by CSA International or local inspection. The ECM3 is suitable for use in Class I, Division 2, Groups A, B, C, D per CSA for Canada and US or non-hazardous locations only.
  • Page 8 ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 WARNING Explosion Hazard—Do not remove covers or connect/disconnect electrical connectors unless power has been switched off or the area is known to be non- hazardous. Explosion Hazard—Substitution of components may impair suitability for Class I, Division 2.

  • Page 9: Electrostatic Discharge Awareness

    PCB from the control cabinet, place it in the antistatic protective bag. CAUTION 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. Woodward...
  • Page 10 ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 viii Woodward...

  • Page 11: Chapter 1. General Information

    CAN, for engines with more than 24 injection outputs to control. The ECM3 is designed to be installed directly on the engine. On engine mounting minimizes wiring cost by minimizing wiring length and the number of junctions.

  • Page 12: Control Specifications

    Electronic Unit Injector (EUI), Electronic Unit Pump (EUP), and Common Rail (CR). The primary purpose of the ECM3 is to control the timing and duration of up to 24 fuel injection devices on a “group 3” reciprocating engine. Group 3 engines include all reciprocating gas and diesel engines producing more than 500 kW per engine but less than 100 kW per cylinder.

  • Page 13: Figure 1-1. Ecm3 Outline Drawing

    Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines The ECM3 uses a patented automatic calibration procedure for all fuel injectors that it controls. The automatic calibration procedure runs continuously while the control is operational to compensate for electrical resistance changes over temperature and valve movement differences caused by pressure and wear out effects.

  • Page 14: Chapter 2. Installation

    The ECM3 was shipped from the factory in an anti-static, foam-lined, carton. This carton should always be used for transport of the ECM3 when it is not installed. Check for and remove all manuals, connectors, mounting screws, and other items before discarding (storing) the shipping box.

  • Page 15: On-Engine Mounting

    ECM3 and the mounting plate. To install the ECM3 using the vibration isolators, first install the isolators onto the ECM3. Then install the ECM3 with isolators onto the mounting plate. Attach a ground strap as described in the GROUNDING sections following.

  • Page 16: Temperature Specifications

    Wiring harnesses should have strain relief no further than 30 cm (12 inches) from the control. The ECM3 must be located so that no wire or cable (except those noted later) in the ECM3 harness exceeds 10 meters in total length.

  • Page 17: Electrical Connections

    ECM3. See Appendix A for mating connector usage instructions. The sealed connectors on the ECM3 are not designed for removal by hand. After input power is disconnected, the connectors can be removed using a 4 mm Allen head driver.
  • Page 18 Wiring for discrete signals must be done so that the signal wire and the return are always in the same cable bundle. They should never take different paths between the ECM3 and the sensor. This requirement is for signal integrity and EMI/EMC purposes.

  • Page 19: Grounding For Protection Against Electrical Shock

    Recommended Grounding Practices Providing a proper ground for the ECM3 is important. Improper connection of the ECM3 chassis to the ground plane may affect accuracy of I/O and immunity to noise. Differences in potential between the chassis and the ground reference result in an equalizing current flow.
  • Page 20 150 kHz so take care in choosing ground schemes. It may be beneficial for all additional shield terminations, except at the ECM3, to be ac coupled to earth through a capacitor or not connect to earth at all.

  • Page 21: Figure 2-3. I/O Isolation

    Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines Shield grounding can be a determinative process, specific applications and RF environments require different shield grounding schemes be followed. See Woodward application note 50532, Interference Control in Electronic Governing Systems, for more complete information.

  • Page 22: Ecm3 Wiring Diagrams

    ECM3 Wiring Diagrams Terminal Locations All connections are located on the top face of the ECM3. Signals are separated logically so that left and right banks of a Vee engine can be supplied by dedicated connectors thus simplifying the harness design. Power and I/O suitable for off-engine connection is provided on separate connectors.

  • Page 23: Figure 2-4. J1 Pin Out

    Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines Analog Inputs Analog Input 4 J1-70 Analog Input 23 J1-68 Analog Input 5 J1-69 Analog Input 24 J1-67 Analog Input 6 J1-53 Analog Input 25 J1-66 Analog Input 26 J1-65...

  • Page 24: Figure 2-5. J2 Pin Out

    ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 Power Outputs Transducer Power (+) J2-14, 15 Transducer Power (–) J2-24, 25 Digital Outputs Digital Output 7 J2-31 Digital Output Return J2-28 CAN Communications CAN 2 High J2-10 CAN 3 High...

  • Page 25: Figure 2-6. J3 Pin Out

    Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines Digital Outputs Digital Output 1 J3-70 Digital / PWM Output 5 J3-55 Digital Output 2 J3-69 Digital / PWM Output 5 Return J3-45 Digital Output 3 J3-68 Digital / PWM Output 6...

  • Page 26: Input Power

    CAUTION Input power must be applied to the ECM3 control up to 5 seconds prior to expected use. The control must have time to run its power up diagnostics to become operational. Failure of the diagnostics will disable control function.
  • Page 27 J, T, G, RK1, or RK5 fuses is required to meet the requirements for branch circuit protection. Do not connect more than one ECM3 to any one fuse. Use the largest wire size possible for the chosen connectors that also meets local code requirements.

  • Page 28: Figure 2-8. Input Power Wiring Diagram

    ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 The ECM3 input power wiring must be routed separately from all other wiring. Due to the large injection currents, these wires carry large amounts of noise that can interfere with sensitive equipment. If the wires must be routed together with other wires, shielding is recommended.

  • Page 29: Mpu And Proximity Sensor Inputs

    In GAP, speed input #1 is found in the ECM3 Chassis block as “SS_1”. Speed input #2 is found in the ECM3 Chassis block as “SS_2”. The third input which is intended for TDC or Phase is found in the ECM3 Chassis block as “SS_3”. Any of the GAP blocks “AI_MPU_ENG”, “TDC”, or “PHASE”...

  • Page 30: Figure 2-9. Duty Cycle

    Wiring for speed sensors must be shielded cable with wire size of 16 or 18 AWG. Smaller wire diameters may not provide a strong crimp at the ECM3 connector. Also, smaller wire diameters have been shown to be unreliable in on-engine wiring due to fatigue from vibration.

  • Page 31: Figure 2-10. Mpu Wiring Diagram

    If sharing of sensors is absolutely necessary, it is best to share proximity sensors rather than MPU sensors because the signal is not as heavily affected by the load applied within the ECM3. For best signal protection, shielding for speed sensors must be carried through from the sensor to the ECM3 without interruption.

  • Page 32: Figure 2-11. Mpu Signal Arm And Trigger

    The polarity of the MPU signals is important due to the way that the MPU input circuitry inside the ECM3 control functions. The rising and falling edges are used to “arm and trigger” the signal going to the CPU. The rising edge arms the event and the falling edge triggers the event.

  • Page 33: Figure 2-14. Proximity Sensor Wiring Diagram

    Connection to speed input #1 is shown. Speed inputs #2 and #3 are similar. Each input has a dedicated shield connection. Connections are made to J1. See Table 2-5 for pin out of both speed sensor inputs. The Woodward active proximity sensor is shown. The ECM3 supplied proximity power should always be used for signal isolation.

  • Page 34: General Purpose Analog Inputs

    Loop power must be provided from an external source. See transducer wiring below for typical wiring. Loop power should always be fused with a 100 mA (or smaller) fuse. This fuse prevents damage to the sensor or to the ECM3 due to wiring errors or shorts. Input type 4–20 mA Max.

  • Page 35: Figure 2-15. Current Input Wiring Diagram; Loop Powered

    The shield should be connected to the correct Analog Input shield pin on the ECM3. The shield may be connected to the sensor with an optional capacitor or left unconnected.
  • Page 36 In GAP, the three general-purpose analog inputs are provided as analog inputs #14, #15, and #16. Each is found in the ECM3 Chassis block. The GAP block “AN_IN” or the GAP block “AI_SYNC” should be used with these inputs. When used as voltage inputs, the “IN_TYPE”...

  • Page 37: Engine Sensor Analog Inputs

    (not battery ground). The sensor inputs should be used with three-wire ungrounded transducers powered by the ECM3. Use of ratiometric sensors or non-ratiometric sensors is supported. The power source from the ECM3 is a 5 Vdc source (typical for engine sensors).

  • Page 38: Figure 2-18. Engine Sensor Analog Input Wiring Diagram

    ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 Currently, all inputs of this type on the ECM3 have the same input impedance as shown in the table below. Connection Input Impedance Connecto 51.1 k Ω (±1%) AI_1 51.1 k Ω (±1%) AI_2 51.1 k Ω...
  • Page 39 Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines The power source on J1 is a different power source than the one on J2. Two supplies are provided both for capacity reasons and to provide failure mode “limp home” capability in case one of the power sources gets shorted in the wiring harness.

  • Page 40: Temperature Sensor Analog Inputs

    % of full scale typical ±2% of full scale worst case Temperature Drift Table 2-17. Temperature Input Specification Currently, all inputs of this type on the ECM3 have the same input impedance as shown in the table below. Connection Input Impedance Connecto 1 k Ω...

  • Page 41: Boolean And Pwm Inputs

    If shielding is used, the shield should be continuous and ungrounded along its length. There is no connection at the ECM3 for the shield. The shield should be connected to the ECM3 mounting plate at the ground strap location.

  • Page 42: Figure 2-20. Boolean Usage

    To understand the proper application of Boolean and PWM signals into the discrete inputs on the ECM3, it will help to understand how they are used. Since the input is a sinking input, the active condition is actually 0 volts as referenced to the return pin.

  • Page 43: Figure 2-22. Pwm Input Wiring Diagram

    ECM3. Like other signals on the ECM3, maximum wiring length is limited to less than 10 meters. All cabling should be 18 or 16 AWG for proper crimp strength at the ECM3 connector and for engine vibration durability.

  • Page 44: Boolean Inputs

    Max input voltage 32 Vdc Table 2-22. Sourcing Input Specification In GAP, discrete input #1 is found in the ECM3 Chassis block as “DI_1”. The GAP block “BOOL_IN” should always be used with this input. Sourcing Input Wiring Like other signals on the ECM3, maximum wiring length is limited to less than 10 meters.

  • Page 45: Figure 2-24. Sourcing Input Wiring Diagram

    28 Vdc Table 2-23. Sinking Input Specification In GAP, discrete input #2 is found in the ECM3 Chassis block as “DI_2”. Discrete input #3 is found as “DI_3” and so forth. The GAP block “BOOL_IN” should always be used with this input.

  • Page 46: Boolean And Pwm Outputs

    All outputs are individually optically isolated. However, all share a common power supply and return circuit. Each output uses a protected MOSFET that will protect the ECM3 if a short circuit is detected. The output will be retried periodically until the short circuit is removed, allowing the output to operate normally again.

  • Page 47: Figure 2-26. Pwm Output Wiring Diagram For L-Series, Fcv, Flo-Tech

    All Woodward ProAct™ Digital Plus actuators will require an external pull-up resistor at the terminals. Like other signals on the ECM3, maximum wiring length is limited to less than 10 meters. All cabling should be 18 or 16 AWG for proper crimp strength at the ECM3 connector and for engine vibration durability.

  • Page 48: Figure 2-27. Pwm Output Wiring Diagram For Proact Digital Plus

    ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 ECM-3 J3-55 Actuator DO #5 ProAct J3-45 Dig + Common PWM reference (required) Figure 2-27. PWM Output Wiring Diagram for ProAct Digital Plus ECM-3 Actuator J3-55 DO #5 controlled electronic...

  • Page 49: Fuel Injection Outputs

    (LED or incandescent) or a relay coil. The output cannot be synchronized to engine position (crank angle). Like other signals on the ECM3, maximum wiring length is limited to less than 10 meters. All cabling should be 18 or 16 AWG for proper crimp strength at the ECM3 connector and for engine vibration durability.

  • Page 50: Figure 2-30. Fuel Injection Group Design

    Each injection group supports 3 fuel injectors. One injector of an injection group can be used at a time. See below graphic for an understanding of how injector outputs are combined in an injection group. The external connections to the ECM3 are marked as a box with a star inside. +Inj Common...
  • Page 51 J1 – 36 Table 2-29. Fuel Injection Connections Like other signals on the ECM3, maximum wiring length is limited to less than 10 meters. All cabling should be 18 or 16 AWG for proper crimp strength at the ECM3 connector and for engine vibration durability.

  • Page 52: Serial Communication Ports

    Figure 2-31. Fuel Injection Output Wiring Diagram Serial Communication Ports There are two serial ports on the ECM3. They may both be used simultaneously and may both be configured independently. Performance of any one port will depend on how many ports are in use and the port traffic.
  • Page 53 15 m (50 ft) with a total capacitance less than 2500 pF and a data rate not exceeding 56 kbps. The ECM3 serial port may be configured for data rates up to 115200 bps. Wiring length should be limited to 10 meters.

  • Page 54: Figure 2-32. Rs-232 Wiring Diagram

    The RS-232 serial cable must be disconnected when not in use or when the ECM3 is used at full operating temperature. This is also critical for on engine applications. Failure to disconnect the cable can result in damage to the RS- 232 transceiver inside the ECM3.
  • Page 55 Woodward ServLink, Modbus RTU, Modbus ASCII Table 2-32. RS-485 Specification In GAP, the RS-485 port is found in the ECM3 Chassis block as “COMM_2”. One of the GAP blocks “SIO_PORT” or “MOD_PORT” should be used with this port. Use “SIO_PORT” for Woodward ServLink (service tool) application. Use “MOD_PORT”...
  • Page 56 (RS-232 networks are short enough that termination is not required.) Woodward has provided, built-in, network termination resistors for the RS-485 serial port to ease network setup and configuration. The resistor network used is a special design intended to provide maximum noise immunity.

  • Page 57: Can Communication Ports

    Port 1 is electrically isolated from all other circuits in the ECM3. It may be used for on-engine or off-engine communications. Isolation used on this port is SELV rated with respect to product safety requirements.
  • Page 58 It is suitable for use with CAN2 and CAN3 on the ECM3. It can also be used with CAN1 (the isolated port) if an extra wire is used for CAN common. Raychem makes a compatible cable as do many other manufacturers.

  • Page 59: Figure 2-34. Can Cable Cross-Section

    Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines The basic cable requirements are listed below. When selecting other cables, be sure they meet these requirements. 120 Ω ±10% at 1 MHz Data pair impedance Cable capacitance 12 pF/ft at 1kHz (nominal)

  • Page 60: Figure 2-35. Can System Wiring Example

    The next best alternative is to use a very short drop line from the trunk into the ECM3. Special ‘T’ connectors (Tap in the diagram above) are available from multiple manufacturers to ease the wiring harness manufacture.
  • Page 61 Typically the direct shield grounding location does not have to be at a unit connector, it can be any convenient place in the system. The ECM3 has been constructed so that the CAN port #1 shield connection is ac coupled to chassis ground, chassis ground must be tied directly to earth ground.

  • Page 62: Figure 2-36. Can-1 Wiring Diagram

    ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 Wiring length restrictions depend on the baud rate used. Table 2-36 is appropriate for CANopen, at the 4 supported baud rates. The “Trunk” is the length between the two units that are at the physical ends of the network. The “Cumulative Drop”...

  • Page 63: Figure 2-37. Can-2 And Can-3 Wiring Diagram

    Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines Both CAN port #2 and CAN port #3 have identical circuit designs. Only the pin out for CAN port #2 is shown. The pin out for CAN port #3 is similar except with different terminal numbers for CAN high and low signals.

  • Page 64: Chapter 3. Serial Communications

    Chapter 3. Serial Communications Modbus Communication The ECM3 can communicate with plant distributed control systems (DCS) and/or CRT-based operator control panels through Modbus communication ports. These ports support communications using ASCII or RTU MODBUS transmission protocols. Modbus uses a master/slave protocol. This protocol determines how a communication network’s master and slave devices establish...

  • Page 65: Figure 3-2. Modbus Frame Definition

    The ECM3 can directly communicate with a DCS or other Modbus supporting device on a single communications link, or through a multi-dropped network. If multi-dropping is used, up to 246 devices (ECM3 or other devices) can be connected to one Master device on a single network.

  • Page 66: Port Adjustments

    Table 3-3. Modbus Error Codes Port Adjustments Before the ECM3 will communicate with another device, the communication parameters must be verified. These values are set in the GAP™ program, and the GAP programmer may also make these values tunable if desired.

  • Page 67: Chapter 4. Programming And Service Tools

    Two program download and service tools are available for the ECM3 control. The Woodward Toolkit is the primary service software. The alternate service software is the Woodward Watch Window system. Both software tools run on a PC that is connected to the control with a RS-232 serial cable. When Watch Window is...

  • Page 68: Connecting The Ecm3 To A Pc

    ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 Connecting the ECM3 to a PC Connection of a generic PC to the ECM3 is required in order to load application software and view/tune within that software application. Figure 4-1 shows the connection details.
  • Page 69 Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines Step 2 – Connecting to the ECM3 Make sure that all other programs or devices that may access your computer’s communication port are shut down. Select Connect from the Communication menu in Toolkit. The user must select the COM port (unless the correct port is configured as the default in the Options…...
  • Page 70 Manual 26349 Downloading the GAP Application Code The ECM3 may be shipped from the factory with a default GAP program. If no application is loaded or a new application needs to be loaded, the application can be downloaded by selecting the option Load Application from the File menu. This will start the Load Application Wizard.
  • Page 71 A warning screen will ask that the user make sure the prime mover is shut down before downloading. When the warning screen has been addressed by clicking Next >, the application file (SCP) to load into the ECM3 must be selected.
  • Page 72 Using Toolkit Here are brief instructions for using the Toolkit to view and tune the variables for your ECM3. These instructions are meant to be introductory. Full on-line help is available in Toolkit. There are three basic types of control parameters within Toolkit. These are: •...

  • Page 73: Watch Window Software Instructions

    Save Values from the Device menu. A configurable parameter is a special type of parameter that is changed but not used until the next reboot. When the ECM3 is rebooted, the new value will take effect.
  • Page 74 ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 Create the Network Definition File Make sure that all other programs that may access your computer’s communication port are shut down and you know which comm port the control is located on.
  • Page 75 Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines In the ServLink window there will be another dialog window entitled “your filename.NET”. Unless the user has given the control a serial number (or name) with the SLSN.EXE program, this name will display as “<unidentified>”.
  • Page 76 Manual 26349 Downloading the GAP Application Code The ECM3 may be shipped from the factory with a default GAP program. In order to download a new GAP-generated application program it is necessary to use the Watch Window Professional service tool. The following steps are required for this program downloading process.
  • Page 77 Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines Once the Load Application selection has been made, the Inspector window will close and a new window will appear. In this new window the user enters the name of the file that is to be downloaded into the control. Once the filename is correct, click on the Open button.

  • Page 78: Using Watch Window

    Start the ServLink server and open a new file. Select the proper COM port for your PC, verify that POINT TO POINT communications mode is selected, and verify that the baud rate matches the baud rate of the ECM3 control. See the on-line help file if you have been changing the port settings of your control.

  • Page 79: Chapter 5. Speed And Position Sensing

    ECM3 Electronic Fuel Injection Control for MHI Engines Chapter 5. Speed and Position Sensing The ECM3 has a total of 3 inputs that can be used for speed sensing for a variety of purposes. The following sections will explain the options. Speed Sensing for Fuel Injection The fuel injection algorithms need to know the engine speed and position relative to a known reference.

  • Page 80: Figure 5-2. Pattern 1

    ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 The second sensor is used to pick up a single tooth (or pin) that represents TDC for cylinder #1. The sensor does not need to be located exactly at the TDC point.

  • Page 81: Figure 5-4. Pattern 2

    The primary group is the group that will be used by default. If any one sensor in the primary group fails, the ECM3 will switch over to the backup sensor group. Again, either of the above patterns may be used for the backup group.
  • Page 82 ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 If a three-sensor system is to be used, the speed sensor should be located on the crankshaft flywheel. This provides the largest sensing wheel with the most teeth and no gear train movement to affect the speed accuracy. A minimum of 60 teeth is required on the flywheel to maintain the desired fuel injection accuracy.
  • Page 83 Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines Phase Camshaft Gear Speed Crankshaft Flywheel 60+ teeth Figure 5-5. Pattern 8 Many varieties of two-sensor system are possible. In all cases, speed is measured from a sensor located on the crankshaft flywheel. This provides the largest sensing wheel with the most teeth and no gear train movement to affect the speed accuracy.
  • Page 84 ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 TDC & Phase Camshaft Gear Speed Crankshaft Flywheel 60+ teeth Figure 5-6. Pattern 3 Phase Missing tooth for TDC Camshaft Gear Speed & Crankshaft Gear 60+ teeth Figure 5-7. Pattern 6...
  • Page 85 Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines Phase Missing tooth for TDC Camshaft Gear Speed & Crankshaft Gear 60+ teeth Figure 5-8. Pattern 7 TDC & Phase Camshaft Gear Speed Crankshaft Flywheel 60+ teeth Figure 5-9. Pattern 9 If a single-sensor system is to be used, a gear wheel on the camshaft is the only choice.
  • Page 86 The primary group is the group that will be used by default. If any one sensor in the primary group fails, the ECM3 will switch over to the backup sensor group. Again, any of the above patterns may be used for the backup group given the limitation of 3 total sensor inputs.

  • Page 87: Chapter 6. Service Options

    Product Service Options 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 88: 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 89: 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 90: Engineering Services

    ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 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 91: 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 92: Appendix A. Connector Information

    However, for service and convenience, Woodward also carries an ECM3 connector kit that contains all of the mating terminal blocks used on the ECM3. A single kit provides all the necessary parts for the ECM3. Contents of the kit include: •...

  • Page 93: Recommended Wire Size And Types

    Polyolefin Insulated and has a medium size insulation thickness. SXL is Special Purpose, Cross Linked Polyolefin Insulated and has a very thick insulation layer. Each type has different characteristics. In relation to the connector on the ECM3, the important characteristic difference between these cable types is the insulation thickness.

  • Page 94: Wire Gauge-Awg To Metric Comparison

    Table A-2 is intended as a guide for determining the wire size that will fit into the ECM3 connector(s). The wire size must also be evaluated for the maximum current rating for each connection. Most places in this manual refer to various AWG sizes as being equal to common metric sizes.

  • Page 95: Appendix B. Commissioning Procedure

    Verify that each input point is connected to the correct device by using current or voltage injection in place of the devices for analog and digital inputs. Communications networks will require special communications equipment to validate. EFI Valve Commissioning Refer to Woodward Application Note 51275, In-Pulse™ II and ECM3 Engine Commissioning Procedure . Woodward...

  • Page 96: Appendix C. Proximity Sensors

    Stainless steel Sensor is sealed and potted internally making it oil and moisture resistant. Transient voltage protection for CE and marine spec levels provided internally The connector on the sensor mates with Woodward part number 1631-002 (MS3106A-10SL-3S). PIN A (+VDC)

  • Page 97: Metric Proximity Sensor

    Manual 26349 ECM3 Electronic Fuel Injection Control for MHI Engines Metric Proximity Sensor Woodward part number: 1689-1056 Figure C-2. Metric Proximity Sensor SAE Proximity Sensor Woodward part number: 1689-1058 Figure C-3. SAE Proximity Sensor Woodward...
  • Page 98 ECM3 Electronic Fuel Injection Control for MHI Engines Manual 26349 Woodward...

  • Page 99: Ecm3 Control Specifications

    ECM3 Control Specifications Input Power Voltage 18 – 32 Vdc (24 Vdc nominal) Power Consumption Application-specific Speed Signal Inputs Speed Input Voltage Magnetic Pickup: 1.4–70.0 V peak-to-peak Proximity Switch: 5–28 Vdc Speed Input Frequency 10 Hz to 10 kHz Proximity Input Duty Cycle 10–90% to 10 kHz...
  • Page 100 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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