Engine
Governing
Systems
Document: Technical Description
Version:
1
Status:
actual
Author:
bs
Date: 01-12-07
Approved: ro
Date: 01-12-07
File:
PC
EAM108
GAC to WOODWARD (8290)
Interface Module
GAC PIB4074 (March 2001)
HUEGLI TECH LTD
SWITZERLAND
Tel.:+41-62-916 50 30
Fax.+41-62-916 50 35
www.huegli-tech.com
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EAM108
GAC to WOODWARD (8290) INTERFACE MODULE
Introduction
The EAM 108 is an electronic interface module designed for use with the Woodward 8290
speed control. The typical application is where the GAC auto sync and load sharing system is
to be used with the 8290 engine speed control. The module accepts a nominal 5.0V DC
signal and provides a 1.5V DC signal output to the 8290 control. DC power for the module is
supplied from the 24V DC battery that powers the 8290 control.
Wiring
See Wiring Diagram.
Note: The common battery minus connection between the 8290, EAM 108, and the GAC
auto-sync and load sharing system should be as direct as possible electrically (minimum
voltage difference).
Specifications
Input impedance (Terminals D & A)
60K ohms
Output impedance (Terminals 11 & 12)
5.8K Ohms
Nominal output voltage (Terminals 11 & 12)
1.50V DC
Output voltage range (Terminals 11 & 12)
0-2.6V DC
Nominal input voltage (Terminals D & A)
5.0V DC
Transfer function
-1.9 volts/ volt
(without trim pot)
-1.1 volts/ volt (with trim pot)
Temperature range
-40° to +85°C
DC supply range (Terminals 1 & 12)
15 to 32V DC
DC supply current (Terminals 1 & 12)
20 mA
Trim Pot (Terminals A, B, & C)
use 5K trim potentiometer
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