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Product Manual 03047 (Revision D, 3/2014) Original Instructions UG-8/UG-40 Governors 4–20 mA Speed Setting System for UG Governors Installation and Operation Manual...
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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.
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...
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.
Introduction This manual contains information on installation, operation, adjustment, and troubleshooting for the 4–20 mA speed setting system for UG-8/UG-40 governors. The manual does not describe the operation of the UG-8D/UG-40D (dial) governors. For complete operation of the UG dial governors, see manual 03040.
Selection of a location that will provide an operating temperature range of –40 to +85 °C (–40 to +185 °F). The control must NOT be mounted on the engine, but as close to the UG governor as possible. Try to avoid connections in excess of 10 m (33 ft). Woodward...
In installations with severe electromagnetic interference (EMI), additional precautions may be required, such as shielded wire run in conduit, double shielded wire, or other precautions. Contact Woodward for more information. Power Supply Connect the 24 volt power supply leads to terminals 1 and 2 of the control amplifier, positive to terminal 1, as shown in Figure 1-4.
(such as low oil pressure or high water temperature), 24 volts is supplied to terminal 8. The supply 24 Vdc should be used to feed terminal 8 (see Figure 1-4). Woodward...
Initial Setup section and follow the Control Adjustments and Starting Procedure sections. Where replacement items have been fitted in the UG governor assembly (such as new cover assembly, potentiometer, or stepper motor), begin with the Initial Setup section and continue through the end of the chapter. Woodward...
This pot modifies the speed setting for a given milliamp input signal. It is normally adjusted at the low speed end of the range. Set the input signal to 4 mA and adjust the IDLE SPEED pot for the desired minimum controlled speed. Woodward...
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Apply 24 Vdc to terminal 8. Rotate the MINOR ALARM pot until the speed of the engine is at the required level. Remove the 24 Vdc from terminal 8. The engine should now ramp up to the rated speed. Woodward...
UG governor as described below. Study the instructions and safety precautions in the engine manufacturer's manual and the Woodward UG Governor manual (number 03040). Remove the 24 Vdc from the control amplifier. Be prepared to make an emergency shutdown when starting the...
In operation, the driver compares the milliamp input signal with the voltage signal derived from the potentiometer and runs the stepper motor to the position in which the milliamp signal corresponds with the feedback signal. This results in a speed setting proportional to the milliamp signal. Figure 4-1. Cover Assembly Woodward...
A–E, B–E, C–E, and D–E of the governor. These should all be between 1.3 and 1.7 Ω. If not, the stepper motor or the stepper motor wires are broken. If no fault can be determined by the previous steps, return the control unit to Woodward for further investigation/repair. Woodward...
MINOR ALARM terminal 8 terminal 8. the rated speed. Stepper motor does not Motor roll pin is Contact Woodward. stop, and the speed disconnected from the setting cannot be changed coupling, or the roll pin is by the motor.
If the issue cannot be resolved, you can select a further course of action to pursue based on the available services listed in this chapter. OEM or Packager Support: Many Woodward controls and control devices are installed into the equipment system and programmed by an Original Equipment Manufacturer (OEM) or Equipment Packager at their factory.
Manual 03047 UG 4–20 mA Speed Setting System 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.
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.
UG 4–20 mA Speed Setting System 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...
UG 4–20 mA Speed Setting System Manual 03047 Revision History Changes in Revision D— Added overhaul interval information to Chapter 6 Changes in Revision C— Added fuse rating information for driver box (page 7) Woodward...
Manual 03047 UG 4–20 mA Speed Setting System Declarations Woodward...
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