THOMSON MEC 310 - APLLICATION NOTES EXTERNAL I-O... User manual

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MEC 310
GENSET CONTROLLER
OPERATOR’S MANUAL
PM089 Rev 0 08/11/24

MEC 310 OPERATION MANUAL
PM089 Rev 0 08/11/24 Thomson Technology
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Table of Contents
1. ABOUT THIS DOCUMENT..............................................................................................................................2
GENERAL PURPOSE .....................................................................................................................................................2
INTENDED USERS ........................................................................................................................................................2
CONTENTS/OVERALL STRUCTURE...............................................................................................................................2
2. WARNINGS AND LEGAL INFORMATION..................................................................................................3
LEGAL INFORMATION AND RESPONSIBILITY ...............................................................................................................3
ELECTROSTATIC DISCHARGE AWARENESS ..................................................................................................................3
SAFETY ISSUES ...........................................................................................................................................................3
FACTORY SETTINGS ....................................................................................................................................................3
DEFINITIONS...............................................................................................................................................................3
Notes......................................................................................................................................................................3
Warnings................................................................................................................................................................3
3. PUSH-BUTTONS, LEDS AND DISPLAY........................................................................................................4
DIMENSIONS ...............................................................................................................................................................4
PUSH-BUTTON FUNCTIONS.........................................................................................................................................4
LED FUNCTIONS ........................................................................................................................................................6
DISPLAY FUNCTIONS ..................................................................................................................................................7
DISCLAIMER .............................................................................................................................................................8
4. BASIC OPERATION..........................................................................................................................................9
BASIC OPERATIONAL THEORY ...................................................................................................................................9
MANUAL OPERATION MODE ....................................................................................................................................10
AUTOMATIC OPERATION MODE ...............................................................................................................................10

MEC 310 OPERATION MANUAL
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1. About this document
General purpose
This document is the Operator’s Manual for THOMSON TECHNOLOGY’s generator controller MEC 310.
The document includes information about push-buttons, LEDs, display readings, icon list and basic
operational theory.
The general purpose is to give the operator important information to be used in the daily operation of the
unit.
Intended users
This Operator’s Manual is mainly intended for the daily user. On the basis of this document the operator
will be able to carry out simple day-to-day procedures.
Contents/overall structure
The document is divided into chapters, and in order to make the structure simple and easy to use, each
chapter will begin from the top of a new page.
Please make sure to read this manual before working with the MEC 310
controller and the gen-
set to be controlled. Failure to do this could result in
damage to the equipment or human injury.

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2. Warnings and legal information
Legal information and responsibility
THOMSON TECHNOLOGY takes no responsibility for installation or operation of the engine/generator set.
If there is any uncertainty regarding how to install or operate the engine controlled by the MEC 310, the
company responsible for the installation or the operation of the engine/generator set should be contacted.
Electrostatic discharge awareness
Sufficient care must be taken to protect the terminals against static discharges during the installation.
Once the unit is installed and connected, these precautions are no longer necessary.
Safety issues
Installing the MEC 310 controller implies work with dangerous currents and voltages. Therefore, authorized
personnel, who understand the risks involved in working with live electrical equipment, should only
undertake the installation.
Factory settings
The unit is delivered with certain factory settings. Given the fact that these settings are based on generic
values, they are not necessarily the correct settings for matching the individual engine. Therefore
precautions must be taken to ensure the suitability of the settings before running the engine. In some
cases protection settings may be disabled in an effort to allow the commissioning agent ease of initial
startup. As such all alarm/shutdown protection settings must be reviewed to ensure the engine generator
set is adequately protected against catastrophic failure.
Definitions
Throughout this document a number of notes and warnings will be presented. To ensure that these are
noticed, they will be highlighted in order to separate them from the general text.
Notes
Warnings
The notes provide general information, which will be helpful
for the reader to
bear in mind.
The warnings indicate a potentially dangerous situation, which could result in
death, personal injury or damaged equipment, if certain guidelines are not
followed.
Be aware of the hazardous live currents and voltages. Do not touch any AC
measurement inputs as this could lead to injury or death.
The controllers are not to be opened by unauthorized personnel.
If opened / warranty seals broken, the warranty will be void.

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3. Push-buttons, LEDs and Display
Dimensions
Front dimensions H x W 160 x 220 mm (6.30” x 8.66”)
Unit depth 54 mm (2.13 “)
Push-Button Functions
The push-buttons on the unit have the following functions:
RUN
:
Permits local
engine Start/Run.
Operation Mode
must be in MAN
to enable this
Push-button.
OFF
:
Stops the engine
immediately.
If the unit is running in
AUTO, the operation
mode will change to
MAN and the engine
will immediately stop.
AUTO
:
Automatic Operation
Mode selector.
Requires a Remote
Start Input to Initiate
Start/Run Sequence.
MAN
:
Manual Operation Mode
selector.
Requires RUN Push-button
be depressed to initiate
Start/Run Sequence
▲:
Normal Display: Scrolls
the display up once.
Program Menu:
Increases set point
value.
▼:
Normal display: Scrolls the
display down once.
Program Menu: Decreases
set point value.
ESC
:
Escape\Exit from Parameter
Menu, Alarm Lists or Event
Logs to the Normal Display.
TEST
:
Activates the programmed timed
test (i.e. timed based off load test).
LAMP TEST
:
Activates all LEDs for
3 seconds.
ENTER
:
Enters value or
acknowledges alarm.
:
Silences Local Horn and
resets horn relay output.
Hold for 2 seconds to
display alarm list.

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RUN: Permits local engine start and run. Mode Selection must be in MAN to enable this push-button.
OFF: Stops the engine instantaneously. If the unit is in AUTO mode, the mode will change to MAN and
the engine will immediately stop.
Note: For Shutdown fault clearing the OFF button must 1st be depressed before pressing the
ENTER button. If the condition is still present the shutdown is acknowledged and will self–clear
when the field device or programming logic permits a return to the none-fail state.
AUTO: AUTO running mode selector.
MAN: Manual Operation Mode selector. Requires RUN Push-button be depressed to initiate Start/Run
Sequence
TEST: Initiates the test sequence selected for the push-button. Test type only programmable using
TPS300 utility software.
LAMP TEST: Lamp test. One push will illuminate all LEDs for 3 seconds.
ESC: Escape\Exit from Parameter Menu, Alarm Lists, Event Logs or Fault Banner to the Normal
Display. Hides pop-up messages.
: Resets horn relay. Extra function: Press and hold button 2 sec. to see alarm list.
▲: Normal display: Scrolls the display up once. Programming: Increases set point value.
▼: Normal display: Scrolls the display down once. Programming: Decreases set point value.
ENTER: Enters value/acknowledges alarm.

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LED Functions
The LEDs provide the following status:
Power: Power OK indicator.
Alarm LED: Flashing: Active, non-acknowledged alarm(s) present.
Steady: Active, acknowledged alarm(s) present.
Amber: Alarm only condition
Red: Shutdown condition present, alarm condition may be present but
shutdowns have higher precedent.
Additional alarm
Indication LEDs: Flashing: Active, non-acknowledged alarm(s) where output A or B is configured to
LED 1, 2, 3 or 4.
Steady: Active, acknowledged alarm(s) where output A or B is configured to LED
1, 2, 3 or 4.
Power LED
:
Power OK
Alarm LED
:
Flashing: Active, non-acknowledged alarm(s) present.
Steady: Active, acknowledged alarm(s) present.
Red = Shutdown / Amber = Alarm
Generator Voltage and Frequency OK
• Illuminates after Voltage & Frequency
are within limit for programmed delay
(channel 6221)
Running feedback present
(selectable in program)
• Oil Pressure
• Magnetic Pickup
• DC Charging Alternator
• AC Voltage
• AC Frequency
LED ON – Auto Mode selected
LED ON – Manual Mode selected
Additional alarm indication LEDs:
LED on when the configured alarm
or condition is present
(For more information, see relay
configuration in the “Installation and
Operators Manual”).

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Display Functions
The display indicates both analog readings and alarms messages. Illustrated below are examples:
Controller type, Hardware and Software Version.
Various analog values can be displayed, shown are:
Fuel Level, Oil Pressure, Water Temp. & RPM.
Others that can be displayed are: AC & DC voltage, AC
current, frequency, kW, kVA, kVAR & Power Factor
Service Timer 1 and 2.
Run hours.
Press ENTER to enter the list of active alarms.
Active alarm list. The alarm list pops up automatically,
when an alarm appears. When the arrow is present, more
alarms are active. Press ▲or▼to scroll through the list.
Exit the list by pressing ESC.
Press ENTER to gain access to the parameter setting
Menu.
Parameter example: D+ delay setting. Use ▲or ▼to
scroll through the settings list. If a change of settings is
necessary, press ENTER and enter the password. Then
use ▲or ▼to change values. Use ESC to leave
settings.
Min. value Actual value Max. value
MEC 310
HW 1.02
SW 1.20.5
Fuel level 80 %
Oil press 2.0 bar
Water 90°C
RPM
0
Alarm list
2 alarm(s)
2 alarm(s)
High Battery
Acknowledged
Parameter
D+ delay
0.0 s 10.0 s 100.0 s
1 0 d 0 h
2 0 d 0 h
Run hours 24 h

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Disclaimer
Disclaimer
The Product is delivered with certain factory setting. The factory settings are based on typical
values and not to be considered acceptable for the piece of equipment it is intended to operate
and protect. Thus precautions must be taken to confirm all settings to ensure these meet the
requirements of the equipment being put into service.
Thomson Technology takes no responsibility for the installation or operation of the engine-
generator set controls. If there is any doubt about how to install or operate the engine-generator
set controlled by this unit, the company responsible for the installation or the operation of the
equipment must be contacted.
To better understand the programming and methods of programming please refer to the
Installation and Operation manual.

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4. Basic Operation
Basic Operational Theory
These operation instructions are based on the assumption the controller has been previously
determined that the programming has been reviewed, modified and the controls and engine
generator set commissioned as acceptable for it’s intended use. It is also assumed the engine
generator set is ready to operate and all necessary house keeping has been completed such
as, checking oil and coolant levels, all mechanical and electrical fundamentals proven to be in
good working order.
Initial Power up and Fault Clearing
On initial power up of the controller it is probable that various alarms or shutdowns may be presented.
These will need to be cleared prior to placing the equipment into service or operation.
Fault alarms can only be cleared if the alarm message appears on the display, the field device causing
the fault has returned to the non-fail state or the associated alarm is programmed to be ignored during
initial start up (bypassed on start) and the ENTER push-button depressed. If the field device remains in
its fault state during the reset process and its fault condition is not programmed to be ignored during initial
start up pressing the ENTER push-button will only result in acknowledging the alarm.
Shutdown states require the OFF push-button be depressed prior to the ENTER push-button to
allow fault clearing. This ensures the engine generator set cannot unintentionally restart after the
fault is cleared if an automatic start is being requested.
Previously acknowledged alarms or shutdowns will clear automatically when its associate field
device returns to its non-fail state.
Shutdown conditions differ from Alarm conditions in that only one shutdown can exist at a time, 1st
shutdown in locks out subsequent shutdowns. If multiple shutdowns were permitted it would be
impossible to determine which state was the actual cause making troubleshooting a nearly impossible
task.
The controller provides a quick reference as to the alarm state level. The alarm LED on the controller can
change between an amber or red state. If both alarms and a shutdown are present the LED will be red
indicating the highest level of alarm, this being a shutdown condition. When there are only alarms
present, the alarm LED will be amber. Multiple alarms are permitted and will be displayed on the alarm
list with an up/down arrow advising to scroll through the list to view all. Only the displayed alarm can be
cleared, unviewed alarms cannot be cleared unless displayed or previously acknowledged.
A flashing alarm LED is an indication of a new alarm/shutdown, which is unacknowledged. Pressing the
ENTER push-button will acknowledge and/or clear the alarm if the associated field device or program
permits. If not permitted the alarm LED will change to a solid state, if multiple new alarms are present the
LED will continue to flash until all new alarms are acknowledged or cleared.
The Horn Silence push-button only silences the local controller horn and reset the horn relay
output, it will not acknowledge or clear alarm states. The MEC310 internal alarm horn must be
enabled using M-Logic if desired.
The Horn Silence push-button provides a secondary function, by holding this push-button for
greater than 2 seconds the alarm list is displayed.

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Manual Operation Mode
Pressing either the MAN or OFF push-buttons selects Manual Operation Mode.
In the Manual Operation Mode the remote start input is ignored, starting and stopping of the engine
generator can only be achieved with the RUN and OFF push-buttons on the left side of the controller.
Once a manual RUN is initiated the engine generator set will continue to operate until manually
requested to stop by pressing the OFF push-button (immediately stops without cooldown) or by
pressing the AUTO push-button (the cooldown sequence will be initiated prior to the engine
stopping), the fuel supply blocked/exhausted or a shutdown action resulting from a protection
setting.
With the Manual Operation mode selected, pressing the RUN push-button initiates the start sequence.
The start sequence is as follows:
1. Preheat delay is posted if programmed (also pre-start delay for preheat, prelube, etc…)
2. Initiate starter engagement and cranking of engine
3. Disengages engine automatically once the speed of the engine exceeds preprogrammed rises
above the crank disconnect setpoint in program. Additional crank and rest cycles are added if the
engine fails to start in its first attempt. Fail to Start shutdown protection is activated should the
engine not start after the programmed number of attempts has been exceeded.
4. All protection and alarm functions, which are bypassed when not running, are enabled after the
engine starts (generally within 10 – 20 seconds of the starter being disengaged).
5. Engine generator set continues to operate until requested to stop.
The stop sequence is as follows:
1. Press the OFF push-button. The engine generator stops immediately without a cooldown
sequence.
2. Press the AUTO push-button. The engine generator continues to operate and will initiate a
cooldown before stopping the engine generator set. The stop sequence is not initiated until the
remote start input is removed.
Automatic Operation Mode
Pressing the AUTO push-button selects Automatic Operation Mode.
The start sequence is as follows:
1. When a remote start contact is closed to a binary input configured for remote start the Preheat
delay is posted if programmed.
2. Initiate starter engagement and cranking of engine
3. Disengages engine automatically once the speed of the engine exceeds preprogrammed rises
above the crank disconnect setpoint in program. Additional crank and rest cycles are added if the
engine fails to start in its first attempt. Fail to Start shutdown protection is activated should the
engine not start after the programmed number of attempts has been exceeded.
4. All protection and alarm functions, which were bypassed when not running, are enabled after the
engine starts (generally within 10 – 20 seconds of the starter being disengaged).
5. The engine generator set will continue to operate until requested to stop.
The stop sequence is as follows:
1. When the remote start contact opens the engine generator set will continue to operate for it’s
programmed cooldown period and then stop.
THOMSON TECHNOLOGY reserves the right to change any of the above.