Automatic Generator Start Controller with Metering, Load Current and Power Measurement, 96x96 DIN Size

EAOM-71 EAOM-71 SOFT

PC Communication Software for
Automatic Generator Start Controller with Programming and Remote Monitoring
Metering, Load Current and Power
Measurement, 96x96 DIN Size

- Automatic engine start / stop

- Automatic shutdown on fault condition
- LED status and fault indication
- Alternator voltage and frequency measurement and monitoring
- Battery voltage measurement and monitoring
- Simple push-button controlled operation
- Over / under speed warning and shutdown
- Remote start / stop input
- Three user configurable inputs
- Provides charge alternator excitation current
- Two configurable relay outputs
- Speed sensing from alternator frequency or magnetic pickup
- Preheat
- Fully programmable
- RS-232 communication port
- Standard modem communication

- Monitors
Alternator voltage and frequency Battery voltage
Battery charging Engine running time
Engine RPM Engine Power
Load current (1 phase)
- Controls
Engine fuel supply or engine stopping Preheat
Starter motor Alarm horn
Over / Under speed
- Fail Monitoring
Engine temperature Charging alternator
EAOM-71

Oil pressure Emergency stop

Over / Under speed Low battery voltage
Voltage fail Weak battery alarm

Instruction Manual. ENG EAOM-71 02 V00 07/07

ABOUT INSTRUCTION MANUAL

Instruction manual of EAOM-71 consists of two main sections. Explanation of these

sections are below. Also, there is another section which include technical specifications of the
device. All titles and page numbers in instruction manual are in “CONTENTS” section. User can
reach to any title with section number.

Installation:

In this section, physical dimensions of the device, panel mounting, electrical wiring,
physical and electrical installation of the device to the system are explained.

Operation and Parameters:

In this section, user interface of the device, how to access to the parameters, description
of the parameters are explained.

Also in these sections, there are warnings to prevent serious injury while doing the
physical and electrical mounting or using the device.

Explanation of the symbols which are used in these sections are given below.

c This symbol is used for safety warnings. User must pay attention to these
warnings.

a This symbol is used to determine the dangerous situations as a result of an electric

shock. User must pay attention to these warnings definitely.

This symbol is used to determine the important notes about functions and usage of
i the device.

Z This symbol is used for VDC

V This symbol is used for VAC

2
CONTENTS
1.PREFACE............................................................................................................................................ Page 6
1.1 GENERAL SPECIFICATIONS
1.2 WARRANTY
1.3 MAINTENANCE

2.INSTALLATION.................................................................................................................................... Page 8
2.1 GENERAL DESCRIPTION
2.2 DIMENSIONS
2.3 PANEL CUT-OUT
2.4 ENVIRONMENTAL RATINGS
2.5 PANEL MOUNTING
2.6 INSTALLATION FIXING SCREWS
2.7 REMOVING FROM THE PANEL
3.ELECTRICAL WIRINGS...................................................................................................................... Page 12
3.1 TERMINAL LAYOUT AND CONNECTION INSTRUCTIONS
3.2 ELECTRICAL WIRING DIAGRAM
3.2.1 SINGLE PHASE WIRING DIAGRAM
3.2.2 THREE PHASE WIRING DIAGRAM

4.RS-232 SERIAL INTERFACE, PROGRAMMING THE DEVICE OVER PC OR MODEM...................Page 16

4.1 CABLE CONNECTION BETWEEN RS-232 TERMINAL OF THE DEVICE AND PC
4.2 CABLE CONNECTION BETWEEN RS-232 TERMINAL OF THE DEVICE AND MODEM
4.3 PC INTERFACE
4.3.1 TECHNICAL SPECIFICATIONS
4.3.2 INSTALLATION INSTRUCTIONS
4.3.2.1 MINIMUM SYSTEM REQUIREMENTS
4.3.3 INSTALLING EAOM-71 SOFTWARE
4.3.4 USING OF EAOM-71 COMMUNICATION SOFTWARE
4.3.5 DESCRIPTION
4.3.6 OBSERVATION WINDOW
4.3.7 OPERATOR PARAMETERS WINDOW
4.3.8 TECHNICIAN PARAMETERS WINDOW
4.3.9 MAIN MENU
4.3.9.1 FILE
4.3.9.2 PROGRAMMING
4.2.9.3 SETTINGS
4.2.10 ENTERING TO THE OPERATOR PARAMETERS WINDOW
4.2.11 ENTERING TO THE TECHNICIAN PARAMETERS WINDOW
4.2.12 ENTERING TO THE ADJUSTMENT WINDOW
4.2.13 ENTERING TO THE LINEARISATION WINDOW
4.2.14 LOAD THE CONFIGURATION FILE FROM DISC
4.2.15 SAVE THE CONFIGURATION FILE TO THE DISC
4.2.16 UPLOAD
4.2.17 DOWNLOAD

5.PARAMETERS.....................................................................................................................................Page 23
5.1. PROGRAM FUNCTIONS
5.1.1 ALTERNATOR VOLTAGE
5.1.2 ALTERNATOR FREQUENCY
5.1.3 BATTERY VOLTAGE LOWER LIMIT
5.1.4 OVER CURRENT LIMIT
5.1.5 MAINTENANCE INDICATION
5.1.6 SPEED SENSING INPUT SELECTION
5.1.7 STOP / FUEL SOLENOID SELECTION
5.1.8 STOP MAGNET ENERGISING TIME
5.1.9 ENGINE STARTED SIGNALS
5.1.10 BATTERY VOLTAGE
5.1.11 CURRENT TRANSFORMER RATIO
5.1.12 ENGINE STARTING
5.1.13 OIL PRESSURE BY-PASS TIME
5.1.14 CONTROL ON DELAY
5.1.15 ENGINE COOLING TIME
5.1.16 CONFIGURABLE INPUTS
5.1.17 CONFIGURABLE OUTPUTS
3
 5.1.18 PRESSURE LOWER LIMIT
5.1.19 PRESSURE CONFIGURATION
5.1.20 TEMPERATURE UPPER LIMIT
5.1.21 TEMPERATURE CONFIGURATION
5.1.22 LEVEL LOWER LIMIT
5.1.23 LEVEL CONFIGURATION
5.1.24 OPERATOR PASSWORD
5.1.25 TECHNICIAN PASSWORD
5.2 CHANGING and SAVING OPERATOR PARAMETER VALUE
5.3 CHANGING and SAVING TECHNICIAN PARAMETER VALUE

6. COMMISSIONING.............................................................................................................................. Page 35

7. LAMP TEST.........................................................................................................................................Page 36
8. OPERATION....................................................................................................................................... Page 37
8.1 FRONT PANEL DESCRIPTION
8.2 DISPLAY MODE INDICATORS
8.3 STARTING THE ENGINE
8.4 STOPPING THE ENGINE

9. FAULT FINDING................................................................................................................................. Page 39

9.1 FAULT INDICATIONS
9.1.1 FAILED TO START LED
9.1.2 HIGH TEMPERATURE LED
9.1.3 LOW OIL PRESSURE LED
9.1.4 CHARGE GENERATOR FAILURE LED
9.1.5 OVER / UNDER SPEED LED
9.1.6 GENERATOR VOLTAGE FAILURE LED
9.1.7 SPARE-1, 2, 3
9.1.8 EMERGENCY STOP MESSAGE LED
9.1.9 LOW BATTERY VOLTAGE MESSAGE (bAT1)
9.1.10 WEAK BATTERY ALARM MESSAGE (bAT2)
9.1.11 ROUTINE MAINTENANCE DUE (SErV)
9.1.12 OVER CURRENT (ocr)

10.PROGRAMMABLE PARAMETERS.................................................................................................. Page 41

11.SPECIFICATIONS.............................................................................................................................. Page 43

4
EU DECLARATION OF CONFORMITY
Manufacturer Company Name : Emko Elektronik A.S.

Manufacturer Company Address: DOSAB, Karanfil Sokak, No:6, 16369 Bursa, Turkiye

The manufacturer hereby declares that the product conforms to the following
standards and conditions.

Product Name : Electrical control equipment for generating sets

Model Number : EAOM-71

Type Number : EAOM-71

Product Category : Electrical equipment for measurement, control and

laboratory use

Conforms to the following directives :

EMC : BS EN 50081-2, EMC Generic Emission Standard for industrial

equipment
BS EN 50082-2, EMC Generic Immunity Standard for industrial
equipment
Electrical Safety : EN 61010-1, Safety Requirements for electrical equipment for
measurement, control and laboratory use

5
1. PREFACE
These products provide control and protection in the operation of a generator set. The units allow
starting and stopping of the engine and indicates status and fault conditions. The unit monitors:
Engine temperature
Oil pressure
Charging alternator
Over / Under speed
Voltage fail
Emergency stop
Low battery voltage
Weak battery alarm
Alternator output (voltage and frequency)

It controls:
Engine fuel supply or engine stopping, via external solenoid
Starter motor via external relay
Automatic generator start and stop.
Alarm horn
Preheat (configurable relay feature)
Load transfer (configurable relay feature)

A four-digit, seven-segment display provides extensive monitoring of unit and alternator

parameters, including:
Alternator output voltage and frequency
Engine RPM
Battery voltage
Elapsed time
Battery charging
Load current (1 phase)
Temperature, pressure and fuel level from resistive senders
Engine running time
Engine Power
Error indication
Program parameters

The unit is extensively programmable with password protection on two levels. In the event that
the engine fails to start on the first attempt, the attempt will be repeated a programmed number of
times or until successful.
If a fault is detected, the unit shuts down the engine and indicates the failure by flashing an
appropriate fault LED.
Remote fuel, start and emergency stop inputs provide for remote control of the engine.

Three user-defined inputs are included that sound an external horn, flash indicators on the panel
and can be programmed to stop the engine.
Two extra outputs can be configured to act on an alarm, when the engine is running, when a load
can be transferred to the alternator or when engine preheating is required. The operational
parameters of the unit can be monitored and controlled from a PC via a built-in RS-232 port.

6
1.1 General Specifications

+BATTERY 12VZ/24VZ
SELECTION POWER
SUPPLY

BATTERY MICROCONTROLLER
VOLTAGE TRANSISTOR
SENSING OUTPUTS

LOAD
CURRENT
IL1
SENSING
COMMON &
CONDITIONING ANALOG
TO
N GENERATOR DIGITAL
GEN L1 VOLTAGE CONVERTER
SENSING
GEN L2 &
GEN L3 CONDITIONING
PRESSURE
TEMPERATURE ANALOGUE
LEVEL INPUTS
COMMON

FREQUENCY
SENSING
FROM
GENERATOR
VOLTAGE COUNTER
&
RS-232
FREQUENCY TIMER
COMM.
MAGNETIC SENSING
PICK-UP FROM
MAGNETIC
PICK-UP
FAILURE &
FAILURE STATUS
& INDICATORS
CONTROL
INPUTS

PUSH
BUTTONS

1.2 Warranty
EMKO Elektronik warrants that the equipment delivered is free from defects in material and
workmanship. This warranty is provided for a period of two years. The warranty period starts from
the delivery date. This warranty is in force if duty and responsibilities which are determined in
warranty document and instruction manual performs by the customer completely.

1.3 Maintenance
Repairs should only be performed by trained and specialized personnel. Cut power to the device
before accessing internal parts.
Do not clean the case with hydrocarbon-based solvents (Petrol, Trichlorethylene etc.). Use of
these solvents can reduce the mechanical reliability of the device. Use a cloth dampened in ethyl
alcohol or water to clean the external plastic case.

7
2. INSTALLATION

c
Before beginning installation of this product, please read the instruction
manual and warnings below carefully.

Carefully unpack the unit and check for damage to the unit or to the cables supplied.
Retain the packing in case of future need, e.g. returning the unit for calibration.
Check the contents, as follows:
• One EAOM-71 unit.
• Operating Manual.
• Screw fixings.
• RS-232 Cable.

Before commencing installation:

• Disconnect all electrical power to the machine.
• Make sure the machine cannot operate during installation.
• Follow all of the machine manufacturers' safety warnings.
• Read and follow all installation instructions.
A visual inspection of this product for possible damage occured during shipment is
recommended before installation. It is your responsibility to ensure that qualified
mechanical and electrical technicians install this product.

Be sure to use the rated power supply voltage to protect the unit against damage and to
prevent failure.

Keep the power off until all of the wiring is completed so that electric shock and trouble
with the unit can be prevented.

Never attempt to disassemble, modify or repair this unit. Tampering with the unit may
results in malfunction, electric shock or fire.

Do not use the unit in combustible or explosive gaseous atmospheres.

During the equipment is putted in hole on the metal panel while mechanical installation
some metal burrs can cause injury on hands, you must be careful.
Montage of the product on a system must be done with it’s own fixing screws. Do not do
the montage of the device with inappropriate fixing screws. Be sure that device will not fall
while doing the montage.
It is your responsibility if this equipment is used in a manner not specified in this
instruction manual.

Report any shortage or damage to your local sales office as soon as possible.

8
2.1 General Description

Front Panel
IP54 Protection
NEMA4X

Mounting holes

2.2 Dimensions
96mm

9mm 106mm 13mm

96mm

2.3 Panel Cut-Out

92mm

92mm
9
2.4 Environmental Ratings

Operating Conditions

Operating Temperature : -25°C to 70°C

Max. Operating Humidity : 90% Rh (non-condensing)

Altitude : Up to 2000m.

c
Forbidden Conditions:
Corrosive atmosphere
Explosive atmosphere
Home applications (The unit is only for industrial applications)

2.5 Panel Mounting

1. If fixing parts are on the unit firstly

unscrew the fixing screws in the fixings
1 parts to remove the fixings parts.
2. Insert the unit in the panel cut-out
from the front. Maximum panel
thickness is 7mm (0.28 inch)
3. Insert the fixings parts in the slotted
that is located on the right and left sides
of the unit and tighten the fixing screws
to secure the unit against the panel.

c
During installation into a metal
3 panel, care should be taken to
avoid injury from metal burrs
which might be present. The
2 equipment can loosen from
vibration and become dislodged if
installation parts are not properly
tightened. These precautions for
the safety of the person who does
the panel mounting.

Fixing part Fixing screw

10
2.6 Installation Fixing Screws

The unit is designed for panel mounting.Fixing is done

by two screw fixings
1. Insert the unit in the panel cut-out from the front side.
2. Insert the fixings through the mounting holes and
tighten the fixing screws to secure the unit against the
panel.

c
During mechanical installation, beware of
any sharp burrs on the metal panel
aperture. Ensure that the fixings are
properly tightened to prevent the fixings
becoming loose due to panel vibration.
Montage of the unit to a system must be
done with it’s own fixing screws. Do not do
the montage of the device with inappropriate fixing screws. Be sure that device will not
fall while doing the montage.
2.7 Removing from the Panel

c
Before starting to remove the
unit from panel, power off the
unit and the related system.

1. Loosen the screws on the fixing

parts on the left and right side of the
device.
2. Pull the fixing parts through the
2nd direction
3. Take off the fixing parts.
4. Pull the unit through the front side
of the panel
2
3
1

11
3. ELECTRICAL WIRINGS
3.1 Terminal Layout and Connection Instructions

20 21 22 23 24 25 26 27 28 29

GND
SGN
REM. START/STOP
LOW OIL PRES.

CONF. INPUT-1

CONF. INPUT-2

CONF. INPUT-3
CHARGE GEN.

HIGH TEMP.
Magnetic

D+ (W.L.)
Pickup

E. STOP
(Max. 10kHz)

- BAT

LEVEL SENDER
PRES. SENDER

TEMP. SENDER
GENERATOR VOLTAGE
MAXIMUM ~300V (Ph - N)

COMMON

COMMON

L1

L2

L3
IL1

N
10 11 12 13 14 15 16 17 18 19
BATTERY VOLTAGE
12Vdc (8-16Vdc)
12A

12A

5A

CONF. OUT-2 5A

CONF. OUT-1 5A
SELENOID
24Vdc (16-32Vdc)
START

HORN

+BAT
+BAT

-BAT
1 2 3 4 5 6 7 8 9

c
Ensure the position of "Power supply position switch" is in the correct position
according to the battery voltage (12 VZ or 24 VZ).

Only qualified personnel and trained technicians should work on this equipment. This
equipment contains internal circuits with voltage dangerous to human life. Do not open or
dismantle the product enclosure.
While installing the unit, battery voltage range must be controlled and appropriate battery
voltage must be applied to the unit. Controlling prevents damages in unit and system and
possible accidents as a result of incorrect battery voltage.
Switch on the battery voltage only after that all the electrical connections have been
completed.
External fuse is recommended.
In case of failure it is suggested to return the instrument to the manufacturer for repair.
You must ensure that the device is correctly configured for your application. Incorrect
configuration could result in damage to the process being controlled and/or personal injury. It is
your responsibility, as the installer, to ensure that the configuration is correct. Device parameters
has factory default values. These parameters must be set according to the system’s needs.
There is severe danger for human life in the case of unauthorized intervention.

12
3.2 Electrical Wiring Diagram
3.2.1 Single Phase Wiring Diagram
GENERATOR LOAD
N N
L L

c
FUSE-5
3

19 18 17 16 10 11
GENERATOR VOLTAGE

c
12A
12A

5A

5A

5A
1
9 8 7 2 1 3 20 28 29 21 22 23 24 25 26 27 4 6 5 15 14 13 12

CONFIG.OUT1

CONFIG.OUT2
+BATTERY
+BATTERY

GND
SGN
-BATTERY

CHARGE GENERATOR
FUSE-1

FUSE-2

HORN
2

TEMPERATURE SENDER
CONFIGURABLE INPUT1

CONFIGURABLE INPUT2

CONFIGURABLE INPUT3
REMOTE START/STOP
HIGH TEMPERATURE

PRESSURE SENDER
LOW OIL PRESSURE

EMERGENCY STOP
Magnetic

SENDER COMMON
FUEL/
Pickup

LEVEL SENDER
40A

40A

START STOP
B+ (up to 10kHz)
RELAY RELAY
BATTERY

STARTER CHARGE
GEN. D+(W.L)

c
1
BATTERY NEGATIVE MUST BE GROUNDED
c
4

3.2.2 Three Phase Wiring Diagram

GENERATOR LOAD
N N
L1 L1
L2 L2
L3 L3

c
FUSE-3

FUSE-4

FUSE-5

3
19 18 17 16 10 11
GENERATOR VOLTAGE

c
12A

12A

5A

5A

5A

1
9 8 7 2 1 3 20 28 29 21 22 23 24 25 26 27 4 6 5 15 14 13 12
+BATTERY

GND
+BATTERY
-BATTERY

SGN

CONFIG.OUT1

CONFIG.OUT2
CHARGE GENERATOR
FUSE-1

FUSE-2

c
HORN

2
TEMPERATURE SENDER
CONFIGURABLE INPUT1

CONFIGURABLE INPUT2

CONFIGURABLE INPUT3
REMOTE START/STOP
HIGH TEMPERATURE

PRESSURE SENDER
LOW OIL PRESSURE

EMERGENCY STOP

Magnetic
SENDER COMMON

FUEL/
Pickup
LEVEL SENDER
40A

40A

START STOP
B+ (up to 10kHz)
RELAY RELAY
BATTERY

STARTER CHARGE
GEN. D+(W.L)

c BATTERY NEGATIVE MUST BE GROUNDED

c
4
1

All rear connectors are two-part removable and can be unplugged to facilitate fast and convenient connection. If remote start
operation is required, the installer should ensure sufficient visual and audible warning takes place before commanding the start
sequence.
FUSE-1 should meet the current required by horn and configurable output ( Max. 15 A. T)
FUSE-2 should meet the current required by solenoids ( Max.16 A. T)
FUSE-3, FUSE-4, FUSE-5 should be 1 A. T

c
1- Connect the unit as shown in the appropriate diagram above. Be sure to connect the battery supply the right way round and
battery negative should be grounded. The connectors can be unplugged from the rear of the unit to facilitate connection.
2- Screened cable must be used for connecting the Magnetic Pickup, ensuring that the screen is grounded at one end ONLY.
3- Seconder side of the current tranformer must be connected to the earth point on the engine body.
4- The senders common must be connected to the earth point on the engine body.

13
Table 3.1 shows the connections and recommended cable sizes. Table 3.2 describes the
functions of the connections.

Table 3.1 Unit wiring

Pin Description Cable Size Notes
(mm)
1 Output to start solenoid 2.5 Max. 12A@24 VZ
2 Positive battery supply input 2.5 Supply external solenoids.
3 Output to fuel solenoid 2.5 Max. 12A@24 VZ
4 Output to horn 2.5 Max. 5A@24 VZ
5 Configurable output-2 1.0 Max. 5A
6 Configurable output-1 1.0 Max. 5A
7 +Battery supply input 2.5 Feeds relay outputs
8 -Battery supply input 2.5 Supplies unit
9 Alternator neutral conductor to unit 2.5
L1 alternator current transformer
10 1.0
input
Alternator current transformer
11 1.0
common input
12 Pressure sender input 1.0
13 Temperature sender input 1.0
14 Fuel level sender input 1.0
15 Common input for senders 1.0
16 Alternator neutral conductor 2.5
17 Alternator voltage input (L1) 2.5
18 Alternator voltage input (L2) 2.5 3 phase only
19 Alternator voltage input (L3) 2.5 3 phase only
20 Input from charge generator 1.0
21 Input from oil pressure switch 1.0 Switch to 0 VZ(NC)
22 Input from high temperature switch 1.0 Switch to 0 VZ(NO)
23 Input from remote start/stop switch 1.0 Switch to 0 VZ(NO)
24 Input from emergency stop switch 1.0 Switch to 0 VZ(NC)
25 Configurable Input-1 1.0 Switch to 0 VZ(NO)
26 Configurable Input-2 1.0 Switch to 0 VZ(NO)
27 Configurable Input-3 1.0 Switch to 0 VZ(NO)
28
Input from magnetic pick-up 1.0
29

14
Table 3.2 Unit wiring description
Pin Function
1 Output to Start solenoid. Controls starter motor
2 Battery positive input. +12 VZ or +24 VZ. Feeds external solenoids
3 Output to Fuel/Stop solenoid. Controls fuel to engine or controls engine stopping
4 Output to horn.
5 Configurable output-2 Can be programmed to provide contact closures when:
6 Configurable output-1 alarm occurs, engine is running or load transfer is permitted
7 +Battery input. +12 VZ or +24 VZ. Feeds relay outputs.
8 -Battery supply to the unit
9 Alternator neutral conductor to the unit
10 L1 Alternator current transformer input Calculated total power value
11 L1 Alternator current transformer common input with measured L1 current value.
12 Pressure sender input. Used oil pressure value measuring
13 Temperature sender input. Used coolant system temperature value measuring
14 Level sender input. Used fuel tank value measuring
15 Pressure, temperature and level sender common connection pin
16 Alternator neutral conductor
17 L1 Voltage inputs from alternator. Unit can be programmed to use frequency of
18 L2 alternator output to detect when engine has started. Pins 18 and 19 not used on
19 L3 single phase applications.
Charge generator failure input. It can be used to detect when engine has started.
20 The EAOM-71 connection replaces the usual charge indicator lamp. It supplies
current to the rotor coil from the battery until the engine is running.
Input from Low Oil Pressure switch. The oil pressure switch must be the type that
21
closes when oil pressure is normal and opens on low oil pressure (failure
condition or engine stopped)
22 Input from temperature switch. Switch to 0 VZ. When engine temperature
exceeds thermostat setting.
23 Remote start/stop input. When the switch to 0 VZ the engine will start, when the
contact is opened the engine is stopped.
24 Emergency stop input. Normally closed. When switch is opened, engine will stop.
25 Configurable Failure Input-1.Normally open. When switch to 0 VZ, sounds the
horn and flashes indicator on panel. Can be programmed to stop the engine.
Configurable Failure Input-2.Normally open. When switch to 0 VZ, sounds the
26 horn and flashes indicator on panel. Can be programmed to stop the engine.
Configurable Failure Input-3.Normally open. When switch to 0 VZ, sounds the
27
horn and flashes indicator on panel. Can be programmed to stop the engine.
Input from magnetic pick-up. Unit can be programmed for number of teeth
28 detected on wheel.

15
4.RS-232 SERIAL INTERFACE, PROGRAMMING THE DEVICE OVER PC OR MODEM

4.1 Cable Connection Between RS-232 Terminal of the Device and PC

EAOM-71 PC
9 pin D connector 9 pin D connector
female male

White

Brown

Green

Standard communication cable

4.2 Cable Connection Between RS-232 Terminal of the Device and Modem

EAOM-71 MODEM
9 pin D connector 9 pin D connector
male female
Green

Yellow
White

Brown

MODEM communication cable

Note: For 9600 baud rate, cable length must be maximum 10 meters.

16
4.3 PC Interface
The PC interface kit comprises of a 9 pin D connector/FCC68(4 pin) connection lead with 2
meters of cable and the optional PC Software (Supplied on CD-ROM)

4.3.1 Technical Specifications

RS-232 non-isolated Serial interface

9600 Baud Rate
8 data bits, No Parity,1 Stop Bit
Maximum allowable cable length is 10 meters

4.3.2 Installation Instruction

4.3.2.1 Minimum System Requirements
Processor : 486 66MHZ
Operating Systems : Windows 95/98/XP, Windows NT, Windows 2000
Ram : 16 Mbyte
Monitor : 14’’ SVGA (640x480 resolution)
Fixed Disc Free Space : 5 Mbyte
Disc Drive : CD-ROM
Communication : An RS-232 communication port is needed to communicate with the
EAOM-71 unit
4.3.3 Installing EAOM-71 Software
Insert the software CD into the CD-ROM drive on the PC. CD will autostart, then select EAOM-71
Install.exe from the menu.

4.3.4 Using Of EAOM-71 Communication Software

Press the windows START button icon, then select EAOM-71 SW Þ EAOM-71 from the
program menu.
4.3.5 Description
EAOM-71 unit communicates with the PC using RS-232 communications. The PC software
allows the EAOM-71 unit’s parameters and status information to be displayed on the PC screen.
Operator and Technician parameters can be viewed. Parameters are password protected.
There are four windows in EAOM-71 PC SW: Observation Window, Operator Parameters
Window,Technician Parameters Window, Adjustment Window and Linearisation Window.

17
4.3.6 Observation Window
In this window the values listed below can be observed.

Measurement Values Failures Outputs

Generator Voltage Failed to Start Configurable Relay Output 1 & 2
Load Current Low / High Speed Solenoid Relay
Power Low Oil Pressure Start Relay
Engine Speed Over Current Horn Relay
Generator Frequency Generator Voltage Failure
Battery Voltage Charge Generator Failure
Maintenance Hour High Temperature
Running Time Routine Maintenance
Emergency Stop
Weak Battery
Battery Fail
Spare-1, 2, 3
Oil Pressure - Analog
High Temperature - Analog
Low Fuel Level - Analog

18
4.3.7 Operator Parameters Window
Operator parameters can be viewed and edited. Parameters are password protected. When the
operator password is entered, it is compared with operator password that is registered inside the
EAOM-71 unit.

4.3.8 Technician Parameters Window

All parameters can be viewed and edited in this window. Parameters are password protected.
When the technician password is entered, it is compared with technician password that is
registered inside the EAOM-71 unit.

4.3.9 MAIN MENU

4.3.9.1 FILE
This menu allows the user to save configuration files to the disc, read from disc and write to disc

Open :This menu allows the user to load the registered configuration files to the PC.
Save :This menu allows the user to save the parameters with a name defined by
user.
Print :This menu allows the user to print the parameters.
Printer Setup:This menu allows the user to select the printer that is connected to network or PC
and change the configuration of the printer.
Exit :Exit the program.

4.3.9.2 PROGRAMMING
This menu is active only when the Operator or Technician Parameters Window is open. Using this
menu allows the user to upload parameters from the EAOM-71 unit to the PC or download from
the PC to the EAOM-71 unit.

Download : With this menu user can load parameters from PC to EAOM-71 .
Upload : User can load the parameters stored on EAOM-71 unit to PC.

19
4.3.9.3 Settings
Communication Port Settings: With this menu, user can determine the serial port configurations
of the PC

4.3.10 Entering to the Operator Parameters Window

Click Operator Parameter tab. Enter the Operator Parameter password. If the password is
correct, operator parameters will be viewed.

20
4.3.11 Entering to the Technician Parameters Window
Click Technician Parameter tab. Enter the Technician Parameter password. If password is
correct, all parameters will be viewed.

4.3.12 Entering to the Adjustment Window

Click Adjustment tab. Enter the Technician Parameter password. If password is correct,
adjustment page will be viewed.

21
4.3.13 Entering to the Linearisation Window
Click Linearisation tab. Enter the Technician Parameter password. If password is correct,
linearisation page will be viewed.

4.3.14 Load the Configuration File From Disc

Click 'Open' in File menu. Choose configuration file which includes operator or technician
parameters on Open Dialog Box. When the user clicks the 'Open' button on the Open Dialog Box,
parameters will be transferred to PC window.
4.3.15 Save the Configuration File to the Disc
Click 'Save' in File menu. After choosing where to save the file, enter the file name. When the user
clicks the 'Save' button on Save Dialog Box, all parameters will be saved to the file.

4.3.16 Upload
Operator parameters, technician parameters and linearisation values can be uploaded with this
selection. For loading parameters from EAOM-71 unit to PC follow the steps below. Press
'Upload' in Program menu. While loading the parameters, the hour-glass cursor is displayed.
Please wait for the upload operation to complete, when the cursor returns to normal.

4.3.17 Download
Operator parameters, technician parameters and linearisation values can be downloaded with
this selection.For loading parameters from PC to EAOM-71 follow the steps below. Press
'Download' in Program menu. While loading the parameters, the hour-glass cursor is displayed.
Please wait for the download operation to complete, when the cursor returns to normal.

22
5. PARAMETERS
The unit is extensively programmable through the front panel and via PC software.

No Definition of Parameter Min Max Default Unit

P00 Alternator Voltage Lower Limit 60 600 300 VV
P01 Alternator Voltage Upper Limit 60 600 440 VV
P02 Speed Lower Limit 30.0 75.0 47.0 Hz
P03 Speed Upper Limit 30.0 75.0 53.0 Hz
P04 Battery Voltage Lower Limit 7.2 24.0 8.0 VZ
P05 Over Current Limit 1 9999 1000 A
P06 Periodic Maintenance Hour Set Value 0 9999 5000 Hour
P07 Periodic Maintenance Hour Reset Press ‘Silence Alarm’ button to reset
P08 Horn Duration (0 = Continuous) 0 999 60 Second
P09 Preheat Time 0 99 10 Second
P10 Single / Three Phase Selection 1/3 3
P11 Nominal Alternator Frequency 50.0/60.0 50.0 Hz
P12 Nominal Speed 500 5000 3000 RPM
P13 Tooth Number 1 1000 100
P14 Current Transformer Ratio 1 2000 500
0-Alternator Signal
P15 Speed Sensing Input Selection 0
1-Magnetic Pick-up
P16 Stop / Fuel Solenoid Selection Stop / Fuel Fuel
P17 Stop Magnet Energising Time 0 99 20 Second
Engine started signal 0=No, 1=Yes
P18.0 Charge Generator 0/1 1
P18 P18.1 Speed 0/1 0
P18.2 Alternator Voltage 0/1 1
P18.3 Oil Pressure 0/1 0
P19 Battery Voltage Weak Limit 6.0 14.4 7.0 VZ
P20 Battery Voltage Weak Control Time 1 99 3 Second
P21 Alternator voltage limit for crank disconnection 40 360 300 VV
P22 Speed Limit For Crank Disconnection 20.0 45.0 40.0 Hz
P23 Number Of Starting Attempts 1 10 3
P24 Starting Attempt Duration 5 99 5 Second
P25 Oil Pressure Bypass Time 0 99 30 Second
P26 Control On Delay 0 99 10 Second
P27 Alternator Voltage Fault Control Delay 0.0 10.0 5.0 Second
P28 Speed Fault Control Delay 0.0 10.0 5.0 Second
P29 Engine Cooling Time(0 = disable) 0 99 3 Minute
P30 Engine Running Time Reset Enter technician password to reset
time to ‘0’ (zero)
P31 Configurable Failure Input-1 0 2 0
0 - Only horn temporary
1 - Only horn permanent
2 - Engine stop
P32 Configurable Failure Input-2 0 2 0
0 - Only horn temporary
1 - Only horn permanent
2 - Engine stop

23
No Definition of Parameter Min Max Default Unit
P33 Configurable Failure Input-3 0 2 0
0 - Only horn temporary
1 - Only horn permanent
2 - Engine stop
P34 Observing Time of Configurable Failure Inputs
P34.0 - For Configurable Failure Input-1
0 - Observation Continuously 0 1 0
1 - Observation While Engine Running
P34.1 - For Configurable Failure Input-2
0 - Observation Continuously 0 1 0
1 - Observation While Engine Running
P34.2 - For Configurable Failure Input-3
0 - Observation Continuously 0 1 0
1 - Observation While Engine Running
P35 Configurable Output-1 0 15 0
0 - Alarm out
1 - Engine running
2 - Load transfer permit
3 - Preheat
4 - Over speed
5 - Over current
6 - Low fuel level
7 - High temperature
8 - Low oil pressure
9 - Maintenance due
10 - Failed to start
11 - Over / under speed
12 - Voltage failure
13 - Charging failure
14 - Low battery value
15 - Weak battery
P36 Configurable Output-2 0 15 0
0 - Alarm out
1 - Engine running
2 - Load permit
3 - Preheat
4 - Over speed
5 - Over current
6 - Low fuel level
7 - High temperature
8 - Low oil pressure
9 - Maintenance due
10 - Failed to start
11 - Over / under speed
12 - Voltage failure
13 - Charging failure
14 - Low battery value
15 - Weak battery

24
No Definition of Parameter Min Max Default Unit
P37 Pressure Lower Limit 0.0 10.0 3.0
P38 Pressure Configuration 0 2 0
0 - Disable the analog input
1 - Pre-alarm
2 - Shut down
P39 Temperature Upper Limit 0 200 80
P40 Temperature Configuration 0 2 0
0 - Disable the analog input
1 - Pre-alarm
2 - Shut down
P41 Level Lower Limit 1 100 25
P42 Level Configuration 0 2 0
0 - Disable the analog input
1 - Pre-alarm
2 - Shut down
P43 Operator Password 0 9990 0
P44 Technician Password 0 9990 0

25
5.1 Program Functions

5.1.1 Alternator Voltage

P00 Alternator Voltage Lower Limit

P01 Alternator Voltage Upper Limit
P27 Alternator Voltage Fault Control Delay

A fault will be reported if the alternator output voltage goes outside the window defined by the
upper and lower limits for more than the time defined as the Alternator Voltage Fault Control
Delay (P27). The fault will only occur if the engine has been running for the period defined as the
Control on Delay (P26). This failure immediately stops the generating set without Engine Cooling
Time (P29)

5.1.2 Alternator Frequency

P02 Speed Lower Limit

P03 Speed Upper Limit
P28 Speed Fault Control Delay

A fault will be reported if the alternator output frequency goes outside the window defined by the
upper and lower limits for more than the time defined as the Alternator Speed Fault Control Delay
(P28). The fault will only occur after the engine has been running for the period defined as the
Control on Delay (P26). This failure immediately stops the generating set without Engine Cooling
Time (P29)
5.1.3 Battery Voltage Lower Limit (P04)
If the battery voltage drops below the defined Battery Voltage Lower Limit (P04), an alarm occurs
and “Low Battery Failure” LED illuminates.
5.1.4 Over Current Limit (P05)
An alarm occurs if the load current exceeds the load current limit for more than 5 seconds after the
period defined by the Control on Delay (P26). The message ocr (Over Current) appears on the
display.
5.1.5 Maintenance Indication
P06 Periodic Maintenance Hour Set Value
P07 Periodic Maintenance Hour Reset

To ensure reliability, the engine must be serviced at regular intervals. The unit can be set to
indicate when a service is due. Set Periodic Maintenance Hour Set Value (P06) to the number of
running hours between services. Use Periodic Maintenace Hour Reset (P07) to reset the hours
counter at each service. When the engine has run for the defined number of hours, the alarm LED
will flash and when the alarm display option is selected, the display will read the error message
bAEr.
5.1.6 Speed Sensing Input Selection (P15)
This parameter specifies the method to read generator frequency. The choice is between
alternator frequency and external magnetic pick-up. Frequency and speed is monitored so as to
detect when engine has started and if there is a generator frequency failure. See Sections 5.1.2
Alternator Frequency, 5.1.9 Engine started signals (P18) and 5.1.12 Engine Starting. Speed Limit
For Crank Disconnection (P22) should be set to the frequency that must be achieved at start-up.
When magnetic pick-up is using Tooth Number (P13) must be entered correctly. Nominal
Alternator Frequency (P11) and Nominal Speed (P12) are used to compute alternator RPM or
frequency. If Speed Sensing Input Selection (P15) is set to 0 (from Alternator Voltage), the unit
26
uses Nominal Alternator Frequency (P11) and Nominal Speed (P12) to calculate RPM from the
measured frequency of the alternator voltage. If Speed Sensing Input Selection is 1 (from
Magnetic pick-up), the unit uses Nominal Alternator Frequency (P11) and Nominal Speed (P12)
to calculate alternator output frequency from the measured RPM.

5.1.7 Stop / Fuel Solenoid Selection (P16)

This parameter allows the use of either a Stop solenoid or a Fuel solenoid. (See Section 5.1.12
Engine Starting.)

If Fuel Solenoid selected, the fuel solenoid will be energised while the engine is running and de-
energised to cut off the fuel and stop the engine.
If Stop Solenoid selected, the stop solenoid is normally de-energised and only energised to stop
the engine. The solenoid remains energised for the period defined as the Stop Magnet
Energising Time (P17). See Section 5.1.12 Engine Starting.

5.1.8 Stop Magnet Energising Time (P17)

This parameter sets the period for which the Stop solenoid is energised to stop the engine. It
applies only where parameter Stop / Fuel Solenoid Selection (P16) is set to Stop Solenoid. See
Section 5.1.7 Stop/Fuel Solenoid Selection (P16)

5.1.9 Engine Started Signals (P18)

The unit must de-energise the Start solenoid to disconnect the starter motor, once the engine is
running. Conversely, if the engine does not start after the pre-set start time, the unit will turn off the
starter motor and try again. Hence, the unit must be able to detect when the engine has started.
Four signals are available to provide engine running information as follows :
0. Charge Generator (P24.0 ); from charging generator energising coil current.
1. Engine speed, as selected by Speed Sensing Input Selection (P15) and Speed Limit for Crank
Disconnection (P22) (Section 5.1.6 Speed Sensing Input Selection (P15))
2. Alternator voltage as selected by parameters Alternator Voltage Limit for Crank Disconnection
(P21)
3. Oil pressure; it looks if oil pressure switch is closed.
Any or all of these signals can be selected for use. It is advisable to select at least two of them
–preferably 1. Engine speed, 2. Charging generator or Alternator voltage.
See Section 5.1.12 Engine Starting. If any of the selected signals appears, the unit assumes that
the engine has started.
5.1.10 Battery Voltage
Battery Voltage Weak Limit (P19)
Battery Voltage Weak Control Time (P20)

If the battery voltage drops below the level specified by the Battery Voltage Weak Limit (P19) for
more than the Battery Voltage Weak Control Time (P20) during engine cranking an alarm occurs.
The message Weak Battery is displayed on the LED display. Use the Reset Button to clear the
alarm indication.

5.1.11 Current Transformer Ratio (P14)

The current transformer input / output ratio can be entered into this parameter, allowing the
primary current value to be displayed.

27
5.1.12 Engine Starting
Number of Starting Attempts (P23)
Starting Attempt Duration (P24)

When the unit receives an Engine Start command from the front panel or via the remote start
input, the starting sequence commences. If the preheating output has been configured (see
section 5.1.17 Configurable Outputs), the display will show the HEAT message for the time period
set by Preheat Time (P09). The unit energises the start solenoid to drive the starter motor and
energises the Fuel solenoid (if selected – see Section 5.1.7 Stop/Fuel Solenoid selection (P16))
to provide fuel for the engine.
If the unit detects that the engine has started, it de-energises the starter motor. Engine start
signals are defined by parameter P18 – see Section 5.1.9 Engine started signals (P18). Starting
Attempt Duration (P24) defines the maximum period for which drive will be applied to the starter
motor. If the unit does not detect engine starting within this period, it cuts off the drive to the starter
motor and de-energises the fuel solenoid, if selected. It then makes a new attempt after a delay
equal to twice the defined Starting Attempt Duration (P24).
Number of Starting Attempts (P23) defines the number of unsuccessful tries that the unit will
make before abandoning the attempts. If all these attempts fail, further operations are locked out
and a Failed to Start indication is displayed. The unit remains locked until the reset button has
been pressed.

5.1.13 Oil Pressure By-Pass Time (P25)

This sets the delay before a Low Oil Pressure warning will be generated. The Low Oil Pressure
fault indicator will light if the oil pressure switch contact remains closed, while the engine is
running, after the period defined by parameter. This period begins when the EAOM-71 has
detected engine starting and has cut off the drive to the starter motor. This failure immediately
stops the generating set without Engine Cooling Time (P29).
5.1.14 Control On Delay (P26)
During the initial period after the engine has been started, there can be fluctuations in engine
speed and alternator output that could generate spurious fault indications. Control On Delay
(P26) defines a period during which any fault indications, except High Temperature, will be
ignored by the unit. This period begins when the EAOM-71 has detected engine starting and has
cut off the drive to the starter motor.

5.1.15 Engine Cooling Time (P29)

Engine Cooling Time (P29) defines the duration of the cooling-off period. When operating under
heavy load, the engine can get very hot and is only prevented from overheating by circulating
coolant. If the engine is stopped abruptly under these conditions, it can overheat as the coolant
flow is cut off. Where the unit controls the load, via one of the configurable outputs, it can ensure
that the engine continues to run after the load has been removed.

28
5.1.16 Configurable Inputs
Configurable Failure Input-1 (P31)
Configurable Failure Input-2 (P32)
Configurable Failure Input-3 (P33)

A contact closure to 0V on any of these inputs causes the horn to sound for the period
programmed by Horn Duration (P08) and lights the appropriate indicator on the panel. The unit
can be programmed to respond in one of three ways:
0. Indication is unlatched - the LED flashes only while the input is 0V. This indication is inhibited if
any other alarm condition is present.
1. Indication is latched. The LED flashes while the horn is sounding and then stays on until the
Reset Button is pressed.
2. This is the same as 1 but in addition the engine is stopped.
5.1.17 Configurable Outputs
Configurable Output-1 (P35)
Configurable Output-2 (P36)

When active, this output provides battery voltage (12VZ or 24VZ) and can be programmed in
one of sixteen different ways:

0. Alarm output. Active when any fault is reported. It can be used for either audible or visual
alert.
1. Engine running. Active while the engine is running
2. Load transfer permitted. This output is active while the alternator output voltage is between
Alternator Voltage Lower Limit (P00) and Alternator Voltage Upper Limit (P01). This output can be
used to control a contactor that transfers the load to the alternator once the generator set is up
and running.
3. Preheat function. On starting the output is active for time period defined in Preheat Time (P09)
prior to running the starter motor.
4. Over Speed
5. Over Current
6. Low Fuel Level
7. High Temperature
8. Low Oil Pressure
9. Maintenance Due
10. Failed to Start
11. Over / Under Speed
12. Voltage Failure
13. Charging Failure
14. Low Battery Voltage
15. Weak Battery
5.1.18 Pressure Lower Limit (P37)
The minimum oil pressure value, in “bar” units, can be entered into this parameter.

5.1.19 Pressure Configuration (P38)

This parameter defines the function of an alarm when the measured oil pressure value is lower
than the value of Pressure Lower Limit (P37). If the parameter value is “0” then analogue
pressure input is disabled. If the parameter value is “1” then it activates pre-alarm (warning). If
the parameter value is “2” then it activates the shutdown alarm.

29
5.1.20 Temperature Upper Limit (P39)
The maximum temperature value, in “°C” units, can be entered into this parameter.
5.1.21 Temperature Configuration (P40)
This parameter defines the function of an alarm when the measured temperature value is higher
than the value of Temperature Upper Limit (P39). If the parameter value is “0” then analogue
pressure input is disabled. If the parameter value is “1” then it activates pre-alarm (warning). If
the parameter value is “2” then it activates the shutdown alarm.

5.1.22 Level Lower Limit (P41)

The minimum fuel tank level value, in “%” units, can be entered into this parameter.
5.1.23 Level Configuration (P42)
This parameter defines the function of an alarm when the measured fuel tank level value is lower
than the value of Level Lower Limit (P41). If the parameter value is “0” then analogue pressure
input is disabled. If the parameter value is “1” then it activates pre-alarm (warning). If the
parameter value is “2” then it activates the shutdown alarm.

5.1.24 Operator Password (P43)

Use this option to change the Operator password. This password allows access to the
parameters from Alternator Voltage Lower Limit (P00) to Preheat Time (P09) and Operator
Password ( P43).

5.1.25 Technician Password (P44)

Use this option to change the Technician password. It allows access to the all parameters from
Alternator Voltage Lower Limit (P00) to Technician Password (P44).

30
5.2 Changing and Saving Operator Parameter Value

Operation Screen VL12/L1N POWER

When button is
VL23/L2N Hz./RPM pressed, all leds and digits
VL31/L3N
are energised, because
IL1 ~
~ ~
~~~ prog button is also used as
test button. Continue to
PROG press the prog buton for 5
RESET TEST seconds, Operator Menu
Entering screen is shown
and prog led lights on.

Operator Menu VL12/L1N POWER

When button is
Entering Screen VL23/L2N Hz./RPM pressed, operator
VL31/L3N
password entering screen
IL1 ~ ~
~~~~
is shown.
PROG
RESET TEST

Operator Password VL12/L1N POWER

Change the password with
Entering Screen VL23/L2N Hz./RPM and buttons
VL31/L3N
IL1 ~ ~
~~~~

PROG
RESET TEST

Operator Password VL12/L1N POWER

After entering the
Entering Screen VL23/L2N Hz./RPM password, push the
VL31/L3N
button for confirming the
IL1 ~ ~
~~~~
password and accessing to
the first parameters of
PROG operator parameters.
RESET TEST

Alternator Voltage
VL12/L1N
VL23/L2N
POWER
Hz./RPM
Lower Limit
VL31/L3N Parameter
IL1 ~ ~
~~~~

PROG
RESET TEST

NOTE : If no operation is performed for 20 seconds, the device exits from the
programming mode and turns to the main operation screen.

31
 VL12/L1N POWER
Alternator Voltage
VL23/L2N Hz./RPM
Lower Limit
VL31/L3N Parameter
IL1 ~ ~
~~~~

Press button for PROG

accessing to the RESET TEST
value

VL12/L1N POWER
Alternator Voltage
VL23/L2N Hz./RPM Lower Limit
VL31/L3N
Value
IL1 ~ ~
~~~~

Change the PROG

parameter with and RESET TEST
buttons

VL12/L1N POWER
Alternator Voltage
VL23/L2N Hz./RPM Lower Limit
VL31/L3N
IL1
Value
~
~ ~
~~~
Press button for
PROG saving the value
RESET TEST and accessing to the
parameter

VL12/L1N POWER
Alternator Voltage
VL23/L2N Hz./RPM Upper Limit
VL31/L3N
Parameter
IL1 ~ ~
~~~~

PROG
RESET TEST

NOTE : Other operator paramaters can be accessed as explained for

For exiting from programming mode, press

NOTE : If no operation is performed for 20 seconds, the device exits from the
programming mode and turns to the main operation screen.
32
5.3 Changing and Saving Technician Parameter Value

Operation Screen VL12/L1N POWER

When button is
VL23/L2N Hz./RPM pressed, all leds and digits
VL31/L3N
are energised, because
IL1 ~
~ ~
~~~ prog button is also used as
test button. Continue to
PROG press the prog buton for 5
RESET TEST seconds, Operator Menu
Entering screen is shown
and prog led lights on.

Operator Menu VL12/L1N POWER

When button is pressed
Entering Screen VL23/L2N Hz./RPM for 10 seconds, technician
VL31/L3N
menu entering screen is
IL1 ~ ~
~~~~
shown.
PROG
RESET TEST

Technician Menu VL12/L1N POWER

When button is
Entering Screen VL23/L2N Hz./RPM
pressed, technician
VL31/L3N password entering screen
IL1 ~
~ ~
~~~ is shown.

PROG
RESET TEST

Technician Password VL12/L1N POWER

Change the password with
Entering Screen VL23/L2N Hz./RPM and buttons
VL31/L3N
IL1 ~ ~
~~~~

PROG
RESET TEST

Technician Password VL12/L1N POWER

After entering the
Entering Screen VL23/L2N Hz./RPM password, press the
VL31/L3N
button for confirming the
IL1 ~ ~
~~~~
password and accessing to
the first parameters of
PROG technician parameters.
RESET TEST

NOTE : If no operation is performed for 20 seconds, the device exits from the
programming mode and turns to the main operation screen.

33
 VL12/L1N POWER
Alternator Voltage
VL23/L2N Hz./RPM Lower Limit
VL31/L3N Parameter
IL1 ~ ~
~~~~

Press button for PROG

accessing to the RESET TEST
value

VL12/L1N POWER
Alternator Voltage
VL23/L2N Hz./RPM Lower Limit
VL31/L3N
Value
IL1 ~ ~
~~~~

Change the PROG

parameter with and RESET TEST
buttons

VL12/L1N POWER
Alternator Voltage
VL23/L2N Hz./RPM Lower Limit
VL31/L3N
IL1
Value
~
~ ~
~~~
Press button for
PROG saving the value
RESET TEST and accessing to the
parameter

VL12/L1N POWER
Alternator Voltage
VL23/L2N Hz./RPM Upper Limit
VL31/L3N
Parameter
IL1 ~ ~
~~~~

PROG
RESET TEST

NOTE : Other technician paramaters can be accessed as explained for

For exiting from programming mode, press

NOTE : If no operation is performed for 20 seconds, the device exits from the
programming mode and turns to the main operation screen.
34
6. COMMISSIONING

c Beware of the high voltages connected to this unit.

1. Check that the unit is correctly wired and that the wiring is of a standard and rating compatible
with the system.
2. Check that the correct fuses are fitted.
3. Program the unit as detailed in Section 5. Parameters.
4. Take temporary steps to prevent the engine from starting - for example, disable the fuel
solenoid.
5. After a visual inspection to ensure it is safe to proceed, connect the battery supply.
6. Press the Power On button (7).
7. Press the Engine Start Button (6).
8. Check that the engine start sequence commences. The starter motor should run for the
Starting Attempt Duration (P24) for the Number of Starting Attempts (P23).
9. Check that the Failed to Start LED flashes.
10. Press the Power Off Button (8).
11. Restore the engine to operational state (reconnect the fuel solenoid).
12. Press the Power On Button (7)
13. Press the Engine Start Button (6).
14. Check the start sequence as follows:
The starter motor runs
The engine starts
The starter motor disengages once the engine is running
If not check that the engine is fully operational (fuel available etc.) And check the wiring to
the unit. Check the programmable parameters.
15. Check that the engine runs up to its operating speed. If not and an alarm is present, check that
the alarm is valid and then check the input wiring.
16. Press the Engine Stop Button (5). The engine should stop. Allow time for the engine to come
to rest.
17. Operate the remote start switch (if fitted) and check that the engine starts.

35
7. LAMP TEST
When button is pressed, all leds and digits are energised.

EAOM - 71
VL12/L1N POWER
VL23/L2N Hz./RPM
VL31/L3N
IL1 ~ ~
~~~~

FAILED TO START RPM SPEED FAILURE SPARE - 1

~
~ ~
~~~
HIGH TEMPERATURE VV VOLTAGE FAILURE SPARE - 2
LOW OIL PRESSURE CHARGING FAIL SPARE - 3

PROG
TEST

RESET

STOP START

36
8. OPERATION
8.1 Front Panel Description

1 12

3 11
4
10

5 6 7 8

Number Comment
Multi Function Display. This is used for displaying the electrical measurements
1 during normal operation and editing / inspecting programming parameters in
programming mode.
2 Failure Indicators. Detailed information available in Section 9 Fault Finding.
3 Green LED lights to indicate that alternator output is available and within the
parameters set by Alternator Voltage Lower Limit (P00) and Alternator Voltage
Upper Limit (P01).
Green LED lights to indicate that engine is running, as indicated by the signals
4 selected by program parameter Engine Started Signals (P18).
Engine Stop button. Stops the engine. A red LED in the corner shows that the
5 button has been pressed.
Engine Start button. Starts the engine. A green LED in the corner shows that the
6
button has been pressed.
Power On. Turns on the unit. A green LED in the corner of the button shows that
7 the unit is on.
8 Power Off. Turns off the unit and stops the engine if it is running. In the Off state
the unit consumes no current from the battery.
Up/Reset. Restores unit operation after it has latched in a fault condition. The
9 Increment (up arrow) function is used in Programming mode as detailed in
Section 5 Parameters.
Down/Silence Alarm. Silences the audible alarm. The Decrement (down arrow)
10
button is used in Programming mode as detailed in Section 5 Parameters.
Prog/Test. Lights all the LEDs and segments on the panel so that you can see if
11 any is not working. Holding the button pressed for ten seconds puts the unit into
programming mode.
The Display Scroll Button is used for rotating between measurement screen in
12 normal operation and between programming parameters in programming mode.

37
 8.2 Display Mode Indicators
VL12/L1N POWER
VL23/L2N Hz./RPM
VL31/L3N
IL1 ~ ~
~~~~

Four-digit, seven-segment LED display. This displays the selected parameter from the list
alongside. Use the button to select which parameter is to be displayed, as indicated by the
adjacent LEDs. The button selects the parameter in sequence, as follows. Note that line
voltage readings are prefixed by ‘L’ while phase-neutral readings are prefixed by ‘n’.
• Alternator voltage L1-L2, prefix L
• Alternator voltage L1-N, prefix n
• Alternator voltage L2-L3, prefix L
• Alternator voltage L2-N, prefix n
• Alternator voltage L3-L1, prefix L
• Alternator voltage L3-N, prefix n
• Alternator L1 current
• Alternator power output (VA) into load. This is the sum of voltage (L/N) x current for all
phases.
• Alternator frequency (Hz)
• Alternator RPM, as measured by alternator frequency or magnetic pick-up as selected by
Speed Sensing Input Selection (P15)
• Oil pressure
• Temperature
• Fuel level
• Battery Voltage (VBAT)
• Engine running time in hours-since last reset via Engine Running Time Reset (P30). This is
a six-digit number. The first three (high) digits are shown in the first display - prefixed H- and
the second (low) in the second display - prefixed L.
• The alarm LED will flash continually if the unit detects any fault. When the display select
button is pressed so as to select this option, the display will show the cause of the fault
indication. If more than one error condition is present, repeated pressing of the button will
show each in turn. Possible error messages are:
EStP - Emergency Stop
bAT1 - Low Battery Voltage
bAT2 - Weak Battery Alarm
ocr – Over Current Failure
SErv-Routine maintenance due
8.3 Starting the Engine
1. Press the Power On button.
EAOM -7
2. Press the Engine Start button on the panel or the remote Start button. The engine should start.
The sequence is as follows:
The starter motor runs
The engine starts
Once the engine is running,
The starter motor disengages.
The green Engine (3) and Alternator Leds (4) light.
The alarm indicators remain off.

8.4 Stopping the Engine

Press the Engine Stop button. The engine will stop and all indicators on the unit will go off.

38
9. FAULT FINDING
Warning: Beware of the high voltages connected to this unit.
Indicators on the central section of the panel will flash if a fault is detected. If a fault is indicated,
proceed as follows:
1. Find and fix the fault.
2. Press the Reset button to enable a restart.
3. Press the Engine Start button
In addition to the indicators on the centre panel, the Alarm LED will flash in the event of a fault. To
discover the fault being reported by the Alarm LED, press repeatedly until the Alarm option has
been selected. The display will indicate the fault condition, as follows:

9.1 Fault indications

9.1.1 Failed to Start LED
This LED flashes if the engine has not started after the programmed Number of Starting Attempts
(P23). The unit must be reset, by pressing the Failure Reset (9) button, before a fresh attempt can
be made.
9.1.2 High Temperature LED
This LED flashes if the thermostatic switch on the engine indicates high temperature. If this fault
occurs, the EAOM-71 will stop the engine without any Engine Cooling Time (P29).

9.1.3 Low Oil Pressure LED

This LED flashes if the Oil Pressure Switch on the engine indicates low oil pressure while the
engine is running. To obtain this indication, the engine must have been running for at least the
period specified by the Oil Pressure By-Pass Time (P25). If this fault occurs, the EAOM-71 will
stop the engine without any Engine Cooling Time (P29).
9.1.4 Charge Generator Failure LED
This LED flashes and the horn sounds if the output from the battery charge generator fails after
the engine has started. The fault will not be indicated if it occurs within the period defined by the
Control On Delay (P26) after the engine has started. This failure will not shut down the engine.
9.1.5 Over / Under Speed LED
This LED flashes if the alternator speed goes outside the values defined by the Speed Lower
Limit (P02) and Speed Higher Limit (P03) parameters. For a fault to be indicated, the speed must
be outside these limits for longer than the period defined by the Speed Fault Control Delay
parameter (P28). Alternator speed is measured either by measuring alternator output frequency
or by monitoring an external magnetic pick-up as selected by program parameter Speed Sensing
Input Selection (P15). This failure immediately stops the generating set without Engine Cooling
Time (P29).
9.1.6 Generator Voltage Failure LED
This LED flashes if the generator output fails to reach the values specified by the Alternator
Voltage Lower Limit parameter (P00) within the period defined by the Control on Delay parameter
P26. This failure immediately stops the generating set without Engine Cooling Time (P29).
9.1.7 Spare-1, 2, 3
Spare inputs 1, 2 and 3. These show the states of the Spare inputs on pins 25, 26, 27. The
indications may be either latched or momentary.

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9.1.8 Emergency Stop Message LED
The remote Emergency Stop button has been pressed and has shut down the engine. Press
Reset to remove the indication and restore unit operation.

9.1.9 Low Battery Voltage Message (bAT1)

The LED switches on when the battery voltage falls below the value specified by the Battery
Voltage Lower Limit (P04). The EAOM-71 measures battery voltage at the EAOM-71 terminals.
This failure is indicated with an error messages in EAOM-71. When this failure occurs in EAOM-
71, the led with exclamation mark starts to flash and user can see the error messages with the
Scroll button .
9.1.10 Weak Battery Alarm Message (bAT2)
This message appears if, during engine cranking, the battery voltage drops below the value
specified by the Battery Voltage Weak Limit (P19) for longer than the period specified by the
Battery Voltage Weak Control Time (P20). The message is reset by Reset Button.

9.1.11 Routine Maintenance Due (SErV)

The interval (hours run) between routine maintenance, set by program parameter Periodic
Maintenance Hour Set Value (P06), has expired. On completion of the required engine
maintenance, reset the maintenance timer using Periodic Maintenance Hour Reset ( P07).
9.1.12 Over Current (ocr)
This message will appear on the display if the alternator current exceeds the value programmed
into the Over Current Limit (P05) for more than 5 seconds after the period defined by the Control
On Delay (P26) parameter.
This fault de-activates the configurable outputs P35.2 and P36.2 (Load Transfer Permit). Thus
removing any alternator load controlled by these outputs. The engine will continue to run.

Symptom Possible Remedy

Check all the wiring of the unit.
Unit is inoperative. Check the Z supply. (measure voltage between pins 7 and 8)
Check the Z fuse.
Low oil pressure fault Check engine oil level and pressure.
after engine has started Check oil pressure switch and wiring.
High engine Check engine temperature and cooling systems.
temperature fault after Check switch and wiring.
engine has started
Check fuel solenoid and wiring, fuel and battery.
Failed to start fault. Reset the EAOM-71 and restart the engine.
Engine failed to start Check solenoid transistor output activated,
after Number of Starting (Fuel Solenoid if selected)
Attempts (P23) Check the signals that the EAOM-71 is using to determine if the
engine has started. Refer to the engine manual.
Check wiring to starter solenoid.
Starter motor Check battery supply.
Inoperative. Check battery supply is present on the Start output (Pin1) of the
EAOM-71.

c
Isolate the equipment from the electricity supply during mechanical and
electrical maintenance. When this is not possible, the equipment must be in
the “STOP” position.
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10. PROGRAMMABLE PARAMETERS
The unit is extensively programmable through the front panel and via PC software.

No Definition of Parameter Min Max Default Unit

P00 Alternator Voltage Lower Limit 60 600 VV
P01 Alternator Voltage Upper Limit 60 600 VV
P02 Speed Lower Limit 30.0 75.0 Hz
P03 Speed Upper Limit 30.0 75.0 Hz
P04 Battery Voltage Lower Limit 7.2 24.0 VZ
P05 Over Current Limit 1 9999 A
P06 Periodic Maintenance Hour Set Value 0 9999 Hour
P07 Periodic Maintenance Hour Reset Press ‘Silence Alarm’ button to reset
P08 Horn Duration (0 = Continuous) 0 999 Second
P09 Preheat Time 0 99 Second
P10 Single / Three Phase Selection 1/3
P11 Nominal Alternator Frequency 50.0/60.0 Hz
P12 Nominal Speed 500 5000 RPM
P13 Tooth Number 1 1000
P14 Current Transformer Ratio 1 2000
0-Alternator
Signal
P15 Speed Sensing Input Selection 1-Magnetic
Pick-up
P16 Stop / Fuel Solenoid Selection Stop / Fuel
P17 Stop Magnet Energising Time 0 99 Second
Engine started signal 0=No, 1=Yes
P18.0 Charge Generator 0/1
P18 P18.1 Speed 0/1
P18.2 Alternator Voltage 0/1
P18.3 Oil Pressure 0/1
P19 Battery Voltage Weak Limit 6.0 14.4 VZ
P20 Battery Voltage Weak Control Time 1 99 Second
P21 Alternator voltage limit for crank disconnection 40 360 VV
P22 Speed Limit For Crank Disconnection 20.0 45.0 Hz
P23 Number Of Starting Attempts 1 10
P24 Starting Attempt Duration 5 99 Second
P25 Oil Pressure Bypass Time 0 99 Second
P26 Control On Delay 0 99 Second
P27 Alternator Voltage Fault Control Delay 0.0 10.0 Second
P28 Speed Fault Control Delay 0.0 10.0 Second
P29 Engine Cooling Time(0 = disable) 0 99 Minute
P30 Engine Running Time Reset Enter technician password to reset
time to ‘0’ (zero)
P31 Configurable Failure Input-1 0 3
P32 Configurable Failure Input-2 0 3
P33 Configurable Failure Input-3 0 3

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No Definition of Parameter Min Max Default Unit
P34 Observing Time of Configurable Failure Inputs
P34.0 - For Configurable Failure Input-1
0 - Observation Continuously 0 1
1 - Observation While Engine Running
P34.1 - For Configurable Failure Input-2
0 - Observation Continuously 0 1
1 - Observation While Engine Running
P34.2 - For Configurable Failure Input-3
0 - Observation Continuously 0 1
1 - Observation While Engine Running
P35 Configurable Output-1 0 13
P36 Configurable Output-2 0 13
P37 Pressure Lower Limit 0.0 10.0
P38 Pressure Configuration 0 2
P39 Temperature Upper Limit 0 200
P40 Temperature Configuration 0 2
P41 Level Lower Limit 1 100
P42 Level Configuration 0 2
P43 Operator Password 0 9990
P44 Technician Password 0 9990

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11. SPECIFICATIONS
Equipment Use : Electrical control equipment for generating sets
Housing& Mounting : 96mmx96mmx92mm(excl. 13mm clips)
Panel Cut-Out : 92 mm x 92 mm
Protection : NEMA 4X (IP54 at front panel, IP20 at rear side).
Weight : Approximately 0.7 Kg.
Environmental Ratings : Standard, indoor at an altitude of less than 2000 meters with
non-condensing humidity.
Operating/Storage Temperature : -25 oC to +70 oC / -40 oC to +85 oC
Operating/Storage Humidity : 90 % max. (None condensing)
Installation Overvoltage Category : II appliances, portable equipment
Pollution Degree : II, normal office or workplace, none conductive pollution
Mode of Operation : Continuous
EMC : EN-61000-6-4, EMC generic emission standard for industrial
equipment
EN-61000-6-2, EMC generic immunity standard for industrial
equipment
Electrical Safety : EN-61010-1, safety requirements for electrical equipment for
measurement, control and laboratory use
Supply Voltage(Z) : 12VZ(8.0VZ to 16.0VZ) or 24.0VZ (16.0VZ to 32.0VZ)
switch selectable
Supply Voltage Measurement : 8.0-40.0VZ. Accuracy : 1%, Resolution : 0.1VZ
Operating Current : Max. 350mA (@12VZ), Max. 400mA (@24VZ)
Generator Voltage Measurement : Single phase, 2 wire 35 to 300VL-N V Accuracy : 1%FS,
Resolution : 1VV
Generator Current : 0 to 5 AV, CT operated (The CT ratio is programmable)
Engine Speed : 0.25% of full scale, 35-10.000Hz magnetic pickup
Power Calculating : Single phase = V1 (L/N)xI1
Three phase = (V1xI1)+(V2xI2)+(V3xI3)
Measurement Accuracy : Volts: 1% Frequency: 0.25% Ampere: 1%
Cranking Dropouts : Battery voltage can be 0VZ for max. 100msn during cranking
(battery voltage should be at least nominal voltage before
cranking)
Generator Speed Measurement : From alternator or magnetic pickup
Alternator Frequency Range :10-110 Hz. (@35-300VL-NZ)
Magnetic Pickup Freq. Range : 35 Hz - 10 kHz (@3-35 Volts peak)
Charge Generator Excitation :12 VZ or 24 VZ, 200 mA, max 3W (BU SATIR YOKTU OLMALI MI?)
Communication Interface : RS-232 serial communication
Contact Sensing Input : Emergency stop (NC), Oil pressure switch (NC), Temperature switch
(NO), Remote start/stop input (NO), Configurable input 1 (NO),
Configurable input 2 (NO), Configurable Input 3 (NO)
Outputs : Start Relay Output 12A (@12/24VZ), Fuel Relay Output 12A
(@12/24VZ), Horn Relay Output 5A (@12/24VZ), Configurable
Relay Output 1. 5A(@12/24VZ), Configurable Relay Output 2. 5A
(@12/24VZ)
Display (4digit,7segment led display) : Generator L1–L2 Voltage, Generator L1–N Voltage, Generator L2
–L3 Voltage, Generator L2 – N Voltage, Generator L3 – L1 Voltage,
Generator L3 – N Voltage, Generator Frequency Hz, Generator
Current (IL1, IL2, IL3), Engine Speed RPM, Battery Voltage Z,
Engine Running Hours, Failure Information
Failure Indicators : Engine Start, High Engine Temperature, Low Oil Pressure, Over /
Under Speed, Generator Voltage Fail, Charge Generator Fail, User
Configurable Input1, User Configurable Input2, User Configurable
Input3
Status Indicators : Power On, Engine Start, Engine Stop, Engine Running, Program,
Generator is ready to take the load
Information Alarms : Emergency stop, Low battery voltage, Weak battery alarm, Routine
Maintenance due
Approvals : GOST-R,

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