Woodward EG-3P Installation And Operation Manual
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Summary of Contents for Woodward EG-3P
- Page 1 Product Manual 82560 (Revision R, 9/2018) Original Instructions EG-3P Actuator including EG-1P, EG-3P with compensation, EG-3P oil motor, and EG-3P oil pump Installation and Operation Manual...
- Page 2 Revisions—Changes in this publication since the last revision are indicated by a black line alongside the text. Woodward reserves the right to update any portion of this publication at any time. Information provided by Woodward is believed to be correct and reliable. However, no responsibility is assumed by Woodward unless otherwise expressly undertaken.
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Page 3: Table Of Contents
Figure 2-1. Recommended Actuator Output Shaft Travel Adjustment ....14 Figure 2-2. Actuator Test Circuit ................16 Figure 4-1a. Exploded View (EG-3P with Gear Pump) ........21 Figure 4-1b. Exploded View (EG-3P with Oil Motor) ..........22 Figure 4-2. Plug Location for Oil Pump ..............23 Figure 4-3. -
Page 4: Warnings And Notices
Start-up On- and off-highway Mobile Applications: Unless Woodward's control functions as the supervisory control, customer should install a system totally independent of the prime mover control system that... -
Page 5: Electrostatic Discharge Awareness
Do not touch the components or conductors on a printed circuit board with your hands or with conductive devices. 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 6: Regulatory Compliance
15.0024X Ex e IIC T4 Gb North American Compliance: These listings are limited only to those EG-3P actuators bearing the CSA or UL identification. CSA: CSA Certified for Class I, Division 2, Groups A, B, C, & D, T4 at 93 °C Ambient. - Page 7 Manual 82560 EG-3P Actuator When used in a Zone 2 Hazardous location, the enclosure in which the EG3P actuator is installed must provide a minimum IP54 level of protection against ingress of dust and moisture in accordance with EN 60079-15.
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Page 8: Chapter 1. General Information
EG-3P Actuator Manual 82560 Chapter 1. General Information 2301 Electric Governor The 2301 electric governor is one in which its actuator output (terminal) shaft position is directly proportional to the input signal from its electric control unit. It can be used in an isochronous (constant speed) mode for single engine operation or when paralleled with similar units on an isolated bus. -
Page 9: Eg-3P Actuator
The EG-3P has 4.5 ft-lb (6.1 J) of stalled work capacity, a useful work capacity of 3 ft-lb (4 J), and a maximum 42° output shaft travel. Torque rating is 6.0 lb-ft (8.1 Nm). - Page 10 (not furnished by Woodward). An EG-3P actuator can be furnished with or without a drive shaft. The drive shaft of a unit fitted with such a shaft can be driven by the prime mover or some other means to provide relative rotation between the pilot valve plunger and bushing and to rotate the oil pump gears.
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Page 11: Figure 1-1. Eg-3P Schematic
The pilot valve plunger is centered when its control land exactly covers the control port in the pilot valve bushing. The greater of two forces moves the pilot valve plunger up or down. When the forces are equal, the plunger does not move. Figure 1-1. EG-3P Schematic Woodward... -
Page 12: Eg-3P Actuator (With Compensation)
EG-3P Actuator (with Compensation) Description Many EG-3P actuators operate with oil supplied directly from the prime mover. Certain multi-viscosity motor oils require a compensation system within the actuator to provide needed stability. -
Page 13: Figure 1-2. Eg-3Pc Schematic
Manual 82560 EG-3P Actuator Figure 1-2. EG-3PC Schematic Buffer System With a fuel change, the new position taken by the loading piston changes the pressure of the compensation oil, temporarily. The new pressure causes a pressure difference across the compensation land and this assists in re-centering the plunger. -
Page 14: Figure 1-3. Needle Valve Location
EG-1 may be ordered from this manual as well as parts for the EG-3P and EG-3PC actuators. Needle Valve Adjustment The needle valve is factory set at two turns out from closed. If instability is experienced during operation with cold multi-viscosity oils the needle valve can be turned in until stability is obtained. -
Page 15: Figure 1-4. Parts For Compensation
Manual 82560 EG-3P Actuator Parts Six additional parts are added to the base for the EG-proportional-compensated actuator. The configuration of the base is also slightly changed. The additional parts are shown in Figure 1-4. A needle valve with O-ring is added to the case. -
Page 16: Chapter 2. Installation
EG-3P Actuator Manual 82560 Chapter 2. Installation Introduction Take care to mount the actuator “square” with the engine (or turbine) linkage. If the actuator is one driven by the engine or some other source, a gasket should be placed between the base and the base mounting pad. The gasket must not block the two drain holes adjacent to the centering pilot of the base (see Figure 4-3). -
Page 17: Factory Adjustments
Manual 82560 EG-3P Actuator Maximum work capacity over full governor travel of 42° is *. See Figure 2-1 for recommended governor output travel. In special applications, min and max prime mover stops may be outside the governor stops. *—See Table 1-1 for values. -
Page 18: Figure 2-2. Actuator Test Circuit
EG-3P Actuator Manual 82560 Pilot Valve Centering Refer to Figure 4-1b (oil motor model), for the item numbers used in the following information. Initial adjustment consists of physically centering the magnet (74) between the coils of the transducer (100) when the control land on the pilot valve plunger (81) is centered over the control port in the pilot valve bushing (26). - Page 19 Manual 82560 EG-3P Actuator Set the test switch to CENTER and adjust the potentiometer for 400 mA on the milliammeter. Set the test switch to OFF. Insert a 1/8 inch Allen wrench through the clearance hole in the center of the cover, and engage the adjustable spring seat.
- Page 20 The shaft-driven EG-3P actuator (most often used) requires about 3/4 volt to move the terminal shaft from the minimum stop. Six or seven volts are required to move the terminal shaft to maximum stop. Some EG-3P actuators require less voltage for full travel.
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Page 21: Chapter 3. Troubleshooting
Manual 82560 EG-3P Actuator Chapter 3. Troubleshooting This chapter gives instructions for checking actuator and prime mover operation. See appropriate manual for troubleshooting your 2301 governor system. Check the load to be sure that speed changes are not the result of unusual load variations. -
Page 22: Chapter 4. Replacement Parts
EG-3P Actuator Manual 82560 Chapter 4. Replacement Parts When requesting additional information concerning governor operation or when ordering parts, the following information must accompany the request: Governor serial number (shown on nameplate) Manual number (this is manual 82560) ... -
Page 23: Figure 4-1A. Exploded View (Eg-3P With Gear Pump)
Manual 82560 EG-3P Actuator Figure 4-1a. Exploded View (EG-3P with Gear Pump) Woodward... -
Page 24: Figure 4-1B. Exploded View (Eg-3P With Oil Motor)
EG-3P Actuator Manual 82560 Figure 4-1b. Exploded View (EG-3P with Oil Motor) Woodward... -
Page 25: Figure 4-2. Plug Location For Oil Pump
Manual 82560 EG-3P Actuator Figure 4-2. Plug Location for Oil Pump Woodward... -
Page 26: Figure 4-3. Outline Drawing (Eg-3P With Gear Pump)
EG-3P Actuator Manual 82560 Figure 4-3. Outline Drawing (EG-3P with Gear Pump) Woodward... -
Page 27: Figure 4-4. Outline Drawing (Eg-3P With Oil Motor)
Manual 82560 EG-3P Actuator Figure 4-4. Outline Drawing (EG-3P with Oil Motor) Woodward... -
Page 28: Figure 4-5. Outline Drawing (Eg-3P With Oil Pump)
EG-3P Actuator Manual 82560 Figure 4-5. Outline Drawing (EG-3P with Oil Pump) Woodward... -
Page 29: Chapter 5. Product Support And Service Options
A current list of Woodward Business Partners is available at www.woodward.com/directory. Product Service Options Depending on the type of product, the following options for servicing Woodward products may be available through your local Full-Service Distributor or the OEM or Packager of the equipment system. -
Page 30: Returning Equipment For Repair
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 31: Engineering Services
Field Service engineering on-site support is available, depending on the product and location, from one of our Full-Service Distributors. The field engineers are experienced both on Woodward products as well as on much of the non- Woodward equipment with which our products interface. -
Page 32: Technical Assistance
Manual 82560 Technical Assistance If you need to contact technical assistance, you will need to provide the following information. Please write it down here before contacting the Engine OEM, the Packager, a Woodward Business Partner, or the Woodward factory: General... -
Page 33: Appendix . Protractor
Manual 82560 EG-3P Actuator Appendix. Protractor Woodward... -
Page 34: Revision History
EG-3P Actuator Manual 82560 Revision History Changes in Revision R— Updated Regulatory Compliance information Added Declaration of Conformity and Declaration of Incorporation Changes in Revision P— Revision advanced to coordinate with new installation sheet. Changes in Revision N—... -
Page 35: Declarations
Manual 82560 EG-3P Actuator Declarations Woodward... - Page 36 EG-3P Actuator Manual 82560 Woodward...
- Page 37 Manual 82560 EG-3P Actuator THIS PAGE INTENTIONALLY LEFT BLANK Woodward...
- Page 38 82560R Please reference publication ËB82560è:èRµ ¹ µ ¸ µ ¹ Î PO Box 1519, Fort Collins CO 80522-1519, USA 1041 Woodward Way, Fort Collins CO 80524, USA Phone +1 (970) 482-5811 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.