Introduction

This manual contains information on installation, operation, adjustment, and troubleshooting for the 4–20 mA speed-setting system for UG-10 governors   (UG-10 MAS). The manual does not describe the operation of the UG-10D (dial) governors. For complete operation of the UG dial governors, see manual 03040.

Description

The speed-setting system consists of an electronic control amplifier which accepts the 4–20 mA signal and drives a stepper motor, which is mounted on the cover of the UGD (UG Dial) governor. This unit in turn rotates the speeder rod which sets the speed of the UGD governor. Chapter 4 contains a detailed description of operation. The control amplifier is housed in a small cast aluminum case (see Figure 1-2). The stepper motor and the feedback potentiometer are mounted in the aluminum cover which is part of the UGD governor (see Figures 1-1 and 1-2).

Applications

The speed setting system is designed around a UGD type of governor to enable its speed to be set from a remote location using a 4–20 mA current loop.

Its principal aim is to meet the need for remote control of engine speed in marine applications using milliamp signals instead of the more traditional pneumatic pressure signal. It can, however, be used in other situations where a UGD governor is applicable.

Some of the UG auxiliary functions (such as solenoid shutdown) can be incorporated. Please consult Woodward about new applications.

WOODWARD ug-10 governor f8526 653 RPM 676-1477

WOODWARD 8271-147 D SYS 8260-171 F serial number: 2237147

WOODWARD 5466-253 I/O

WOODWARD 5466-253 I/O

WOODWARD 5466-253 I/O

WOODWARD 5437-092