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purpose and form, are not permissible without express written approval by MOTORTECH.
Information contained in this publication may be changed without prior notice.
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are the property of the respective entitled person.
Table of Contents
1 General Information .................................................................................................... 8
1.1 What Is the Purpose of this Operating Manual? ......................................................... 8
1.2 Who Is this Operating Manual Targeted to? ............................................................... 8
1.3 Which Symbols Are Used in the Operating Manual? ................................................... 8
1.4 Which Abbreviations/Acronyms Are Used in the Operating Manual? ........................... 9
11.2 Spare Parts and Accessories .............................................................................. 167
12 Index ..................................................................................................................... 168
Rev. 03/2019 7
1 General Information
Read through this operating manual carefully before use and become familiar with the product.
Installation and start-up should not be carried out before reading and understanding this
document. Keep this manual readily available so that you can reference it as needed.
1.1 What Is the Purpose of this Operating Manual?
This manual serves as an aid for the installation and operation of the product and supports the
technical staff with all operating and maintenance tasks to be performed. Furthermore, this
manual is aimed at preventing dangers to life and health of the user and third parties.
1.2 Who Is this Operating Manual Targeted to?
The operating manual provides a code of conduct for personnel tasked with the setup,
operation, maintenance, and repair of gas engines. A certain level of technical knowledge with
respect to the operation of gas engines and basic knowledge of electronic ignition systems are
necessary. Persons who are only authorized to operate the gas engine shall be trained by the
operating company and shall be expressly instructed concerning potential hazards.
1.3 Which Symbols Are Used in the Operating Manual?
The following symbols are used in this manual and must be observed:
Example
This symbol indicates examples, which point out necessary handling steps
and techniques. In addition, you receive additional information from the
examples, which will increase your knowledge.
Notice
This symbol indicates important notices for the user. Follow these. In
addition, this symbol is used for overviews that give you a summary of the
necessary work steps.
Warning
This symbol indicates warnings for possible risks of property damage or
risks to health. Read these warning notices carefully and take the
mentioned precautionary measures.
8 Rev. 03/2019
1 General Information
Danger
This symbol indicates warnings for danger to life, especially due to high
voltage. Read these warning notices carefully and take the mentioned
precautionary measures.
1.4 Which Abbreviations/Acronyms Are Used in the Operating Manual?
In the manual or the user interface, the following abbreviations / acronyms are used.
Abb. Term Description Explanation
ADV Advance Advanced with respect
to top dead center
ASO Auxiliary
Output for synchronizing the
Synchronization Output
ATDC After Top Dead Center
BTDC Before Top Dead Center
CAN bus Controller Area Network
bus
Bus for control
devices/networks
CE Conformité Européenne Conformity with EU
directives
CPU Central Processing Unit
°crankshaft Degree crankshaft Unit for the rotation angle of
CSA Canadian Standards
Organization that defines
Association
DC Direct Current
DetCon Detonation Control
Serves to prevent major
System
Indicates the direction for
timing
MIC5 and other controllers
Asynchronous serial
connection system for
linking control units
Mark based on EU
legislation for certain
products in conjunction with
product safety
the crankshaft
standards, inspects
products for safety
compliance, and issues
pertinent certifications.
engine damage that can be
caused by knocking
combustion.
Rev. 03/2019 9
1 General Information
Abb. Term Description Explanation
EMI Electromagnetic
EMC Electromagnetic
GPI General Purpose Input Multi-purpose input
GPO General Purpose Output Multi-purpose output
HV High Voltage
ISO International
LED Light Emitting Diode Light emitting electronic
MIC MOTORTECH Ignition
MICT MOTORTECH Integrated
MOSFET Metal Oxide
PG Panzergewinde Panzer screw thread Screw thread type for cable
POT Potentiometer Continuously adjustable
PWR Power Output/current
RET Retard Retarded with respect
RS485/
TIA485
TDC Top Dead Center
USB Universal Serial Bus Serial connection system to
Interference
Compatibility
Organization for
Standardization
Controller
Configuration Tool
Semiconductor
Field-Effect Transistor
Recommended Standard
485/
Telecommunications
Industry Association 485
Compatibility of electrical or
Software for the
Semiconductor component
to the top dead center
Industrial standard for a
electronic equipment items
with their surroundings
semiconductor
configuration of the MIC5
screw connections
potential divider
Indicates the direction for
timing
physical interface for
asynchronous serial data
transfer
link a computer to external
devices
10 Rev. 03/2019
2 Safety Instructions
2.1 General Safety Instructions
The following safety instructions must be followed in the area in which the device is operated:
High voltage! Danger to life!
While the engine is running, the area around the ignition system especially
holds the risk of danger due to high voltage. The following parts should
therefore not be touched or removed unless explicitly stated otherwise:
– Ignition coils and caps
– Wires of the high voltage circuit
– In- and output wiring of the ignition controller
– Pickups and their wiring
Danger to persons with pacemakers!
Electromagnetic impulses in the wiring of the ignition system may exceed
the permissible limits of pacemakers. Persons with pacemakers must
MOTORTECH equipment is manufactured as state of the art and therefore safe and reliable to
operate. Nevertheless the equipment can cause risks or damage can occur, if the following
instructions are not complied with:
– The gas engine must only be operated by trained and authorized personnel.
– Operate the equipment only within the parameters specified in the technical data.
– Use the equipment correctly and for its intended use only.
– Never apply force.
– For all work such as installation, conversion, adaptation, maintenance, and repair, all
equipment must be disconnected from the mains and secured against unintentional
reactivation.
– Perform only such maintenance and repair work as is described in this operating manual,
and follow the instructions given while working.
– Only use spare parts supplied by MOTORTECH for the maintenance of the device.
– Further work must only be performed by personnel authorized by MOTORTECH.
Non-compliance with the instructions will void any warranties for the proper function of the
equipment as well as the responsibility for the validity of the certifications.
– Safety devices must not be dismounted or disabled.
– Avoid all activities that can impair the function of the equipment.
therefore not be present in the vicinity of the ignition system being
operated. Mark the operating location of the ignition system with the
corresponding standardized warning symbol.
Rev. 03/2019 11
2 Safety Instructions
– Operate the equipment only while it is in proper condition.
– Investigate all changes detected while operating the gas engine or ignition system.
– Ensure compliance with all laws, directives, and regulations applicable to the operation of
your system, including such not expressly stated herein.
– If the system is not entirely tight and sealed, gas may escape and result in explosion hazard.
The inhalation of gas can also lead to death or severe health damages. Therefore, upon
completion of all assembly works, always check the system's tightness.
– Always ensure adequate ventilation of the engine compartment.
– Ensure a safe position at the gas engine.
– There is a risk of burning on hot surfaces. Allow the engine to cool down before starting any
work.
– Personal protective equipment (PPE), e.g. safety shoes and gloves, must be worn during all
work on the engine.
– Your behavior can reduce possible residual risks to a minimum. Observe responsible
handling of the gas engine and the gas-carrying system.
2.2 Electrostatic Discharge Hazards
Electronic equipment is sensitive to static electricity. To protect these components from damage
caused by static electricity, special precautions must be taken to minimize or prevent
electrostatic discharge.
Observe these safety precautions while you work with the equipment or in its vicinity.
– Before performing maintenance or repair work, ensure that the static electricity inherent to
your body is discharged.
– Do not wear clothing made from synthetic materials to prevent static electricity from
building up. Your clothing should therefore be made of cotton or cotton mix materials.
– Keep plastics such as vinyl and Styrofoam materials as far away from the control system, the
modules, and the work environment as possible.
– Do not remove the circuit boards from the housing of the device.
12 Rev. 03/2019
2 Safety Instructions
2.3 Information on Electric Isolation
If ground and earth potential are not properly isolated, the following problems as well as others
can occur:
– Electromagnetic interferences (e.g. ground loops)
– Signal corruption (e.g. of the analog voltage signal)
– Unwanted leakage currents
Therefore, earth potential and the negative pole of the power supply of all devices in the electric
assembly that provide the option, should be connected separately. If possible, the negative pole
of the power supply should only be connected to earth potential at one point in the entire
system.
Wiring Example
Device with
shielded wires
Device featuring
protection class II
Rev. 03/2019 13
2 Safety Instructions
Occurrence of ground loops
The devices shown in the following image do not feature the possibility to
connect the earth potential and the negative pole of the power supply
separated from each other. How ground loops are created.
A ground loop is a ground connection of an electric wiring assembly that is
closed as a loop. Due to impedance (resistance R > ) of the loop,
low-frequency interference currents can lead to an unwanted voltage drop
in the signal path.
Device 1 Device 2
Ground loop
2.4 Special Safety Instructions for the Device
Explosion hazard!
Never open the device (e.g. by removing covers or the service screw). If the
system is located in a hazardous area, there is a risk of explosion.
Explosion hazard!
The replacement of parts or assemblies can impair compliance with CSA
Class I, Division 2 (Group C, D), T4.
14 Rev. 03/2019
2 Safety Instructions
Explosion hazard!
Do not disconnect any connectors while the system is live. If the system is
located in a hazardous area, there is a risk of explosion.
Explosion hazard!
Never remove the equipment while the unit is connected to a power source.
If the system is located in a hazardous area, there is a risk of explosion.
Explosion hazard!
Do not remove or replace the fuse while the equipment is live.
Risk of burning!
The surfaces of the system may heat up to high temperatures.
Operational safety!
All connector screws and screw joints must be adequately tightened. Refer
to the section Mechanical Data on page 19.
After the service cover on the device has been opened, e.g. to complete the
wiring, it must be refitted so that it is in the same alignment as it was prior
to opening. The USB connection must always be below the service screw. If
the mounting is rotated, maintaining the indicated protection classes, as
well as compliance with CSA-Class I, Division 2 (Group C, D) is impaired.
Rev. 03/2019 15
2 Safety Instructions
Operational safety
The correct operation of the device is only guaranteed if the device is
operated within the permissible supply voltage range. Therefore, use a
power supply according to the specifications in the operating instructions.
Risk of destruction!
Magnetic fields and heat occur when welding, which may damage or
destroy the MIC5. Therefore, pay attention to the following when welding:
– Disconnect all electrical connections to the MIC5 prior to welding.
– Protect the MIC5 against direct contact with the welding unit and
magnetic fields, sparks and liquid metal.
2.5 Proper Disposal
After the expiration of its service life, MOTORTECH equipment can be disposed of with other
commercial waste, or it may be returned to MOTORTECH. We will ensure its environmentally
friendly disposal.
16 Rev. 03/2019
3 Intended Use
3.1 Functional Description
The devices of the MIC5 series are microprocessor controlled ignition systems, that are
comprised of one 32 bit main processor (CPU) and an output board.
Please note that the manufacturer is not required to implement configurations of the ignition
controller for specific engines, and that devices may be delivered without pertinent
configuration.
The ignition controllers of the MIC5 series use information supplied by the pickups to precisely
determine the correct timing for the respective outputs. The timing is influenced by various
inputs made either automatically or manually. This can be implemented with manual
potentiometers, the analog input signals, a speed characteristic, or with a serial interface (USB,
CAN bus, RS485).
During operation, the ignition controllers continuously monitor the system status of all installed
pickups and the correct operation of the primary ignition circuit by checking the information
received.
Depending on the severity of an error that is detected, the device will shut down immediately or
warn the operator. A corresponding message can be viewed on a connected PC.
To protect the engine, the ignition controllers additionally have an adjustable overspeed
shut-off.
3.2 Applications
The ignition controllers of the MIC5 series are designed for specific 2- or 4-stroke gas engines.
From 1 to max. 20 ignition outputs are available. The ignition controllers supply the energy
required for the corresponding ignition coils of the gas engines and can supply signals for
peripheral equipment.
Any use other than the one described in the operating manual shall be considered improper use
and will result in the voiding of all warranties.
Rev. 03/2019 17
4 Product Description
4.1 Technical Data
4.1.1 Certifications
The ignition controllers of the MIC5 series are certified as per the following
directives/regulations:
CE
– EMC Directive 2014/30/EU
– EN 61326-1:2013 – Electrical equipment for measurement, control and laboratory use.
EMC requirements. General requirements
– EN 55011:2009 + A1:2010 – Industrial, scientific and medical equipment.
Radio-frequency disturbance characteristics. Limits and methods of measurement
– EN 61000-6-2:2005 + AC:2005 – Electromagnetic compatibility (EMC). Generic
The MIC5 has the following mechanical characteristics.
Feature Value
Dimensions MIC5:
360.3 mm x 240 mm x 114.5 mm (14.19" x 9.45" x 4.51")
(length x width x height)
MIC5-SE:
304 mm x 240 mm x 95.5 mm (11.97" x 9.45" x 3.76")
(length x width x height)
Weight MIC5:
8.2 kg (18.1 lbs)
MIC5-SE:
3.9 kg (8.5 lbs)
Shape of device See chapter Overview Drawings on page 27
Mechanical environmental
conditions
The housing is resistant to general atmospheric
contaminations.
Resistant to gas engine lubricants.
MIC5:
Protection class: I
Protection: IP65
MIC5-SE:
Protection class: I
Protection: IP54
The specified protection classes and types are only
guaranteed if all external wiring connections are made in
accordance with the connector specification, all covers and
seals are installed as intended and the following tightening
torques are observed:
– All M4 bolts: 0.8 Nm to 1 Nm (0.6 lb-ft to 0.7 lb-ft)
– PG screw joints: 4.5 Nm to 5 Nm (3.3 lb-ft to 3.6 lb-ft)
– Service screw: 2.5 Nm to 3 Nm (1.9 lb-ft to 2.2 lb-ft)
Always use a new seal when installing the service cover.
Standard single seal inserts
for PG screw joints
Rev. 03/2019 19
Suitable for a cable with a diameter of 6 mm to 13 mm.
4 Product Description
Feature Value
Multiple seal inserts for PG
screw joints
Climatic environmental
conditions
4.1.3 Warning Notices on the Device
Validity of warning notices on device
The warning notices on the device are valid for the MIC5 and all components
connected to it.
Warning notice on the device German translation French translation
WARNING! Read and
understand the installation
and operating manual prior to
installing or making any
adjustments.
EXPLOSION HAZARD! Do not
disconnect while circuit is
live unless area is known to
be non-hazardous. For wiring
details refer to the operating
manual.
CAUTION! Do not pressure
wash this ignition module.
Damage to electronic
components may result.
Suitable for up to three cables, each with a diameter of
6 mm to 7 mm.
Housing surface temperature: –40 °C to +60 °C (–40 °F to
+140 °F)
Max. 85 % humidity without condensation up to 2,000 m
(6,562') above sea level
WARNUNG! Lesen und
verstehen Sie die
Installations- und
Betriebsanleitung vor der
Installation und bevor
ATTENTION! Avant d’installer
ou d’effectuer une
modification, lisez et
comprenez le manuel
d’utilisation et d’installation.
Einstellungen vorgenommen
werden.
EXPLOSIONSGEFAHR! Keine
Verbindungen lösen, solange
der Stromkreis aktiv ist,
außer das Umfeld wird als
nicht explosionsgefährdet
eingestuft. Hinweise zur
Verkabelung finden Sie in der
Betriebsanleitung
ACHTUNG! Die
Zündsteuerungseinheit nicht
mit Hochdruck reinigen. Es
könnte zu Schäden an den
elektronischen Bauteilen
RISQUE D‘EXPLOSION! Ne
débranchez pas lorsque le
circuit est sous tension sauf
si la zone est connue pour
être non dangereuse. Pour
plus de détails de câblage,
veuillez consulter le manuel
d´utilisation.
ATTENTION ! Ne pas laver
cette boîte de contrôle en
utilisant un jet sous pression.
Les composants électriques
peuvent être endommagés.
führen.
20 Rev. 03/2019
4 Product Description
4.1.4 Product Identification – Labeling on the Device
The necessary numbers for unique product identification are on the device:
– Part number of the ignition controller (P/N)
– Arrangement number of the ignition controller (A/N)
– Serial number of the ignition controller (S/N)
Example MIC5
4.1.5 Electrical Data
The MIC5 has the following electrical characteristics.
Feature Value
Power consumption MIC5:
Power supply Nominal voltage: 24 V DC
Required current MIC5:
max. 240 W at 24 V
MIC5-SE:
max. 88 W at 24 V
MIC5:
Operating voltage: 16.8 V DC to 32 V DC
MIC5-SE:
Operating voltage: 10 V DC to 32 V DC
current max. 14 A.
MIC5-SE:
current max. 7 A.
An estimation of the power requirements can be found after this
table.
Rev. 03/2019 21
4 Product Description
Feature Value
Number of outputs MIC5:
Firing Angles The size of the firing angle depends on the max. overspeed. The
Ignition frequency MIC5:
20 outputs
MIC5-SE:
8 outputs
smallest firing angle per output bank can be calculated using the
following formula:
With full energy output (all 20 ignition outputs with 500 mJ), an
ignition frequency of 300 Hz as continuous load is possible. With
less ignition energy or in case of a brief overload, 360 Hz is
possible. The maximum output load of 180 W must not be
exceeded.
MIC5-SE:
With full energy output (all 8 ignition outputs with 500 mJ), an
ignition frequency of 120 Hz as continuous load is possible. With
less ignition energy or in case of a brief overload, 150 Hz is
possible. The maximum output load of 75 W must not be
exceeded.
2-stroke engine:
4-stroke engine:
Output connector MIC5:
35-pole military connector
MIC5-SE:
17-pole military connector
22 Rev. 03/2019
4 Product Description
Estimation of Current Requirements
These current values are based on a nominal speed of 1800 rpm and 500 mJ energy
MIC5:
Outputs Voltage Required current Voltage Required current
10 24 V 5 A 16 V* 7 A
16 24 V 7 A 16 V* 11 A
20 24 V 9 A 16 V* 14 A
* Nominal voltage 24 V DC
MIC5-SE:
Outputs Voltage Required current
8 24 V 4 A
Electrical Data for Inputs and Outputs
The inputs and outputs of the ignition controller have the following electrical data:
Inputs and outputs Values
Analog current input Current range: 0 mA to 20 mA (adjustable in MICT)
Input impedance: 27 || 1 µF
Analog voltage input Voltage range: 0 mA to 10 mA (adjustable in MICT)
Input impedance: 12.4 k || 200 nF
Auxiliary analog input
supply voltage
Binary input (Start/Stop) Wiring
Binary input (schedule A/B) Wiring
5 V to 24 V/50 mA depending on the configuration in the MICT
Input current: max. 20 mA
Ignition stop: 0 V to 0.8 V (low level)
Ignition release: 2.8 V to 32 V (high level)
Input current: max. 20 mA
Schedule A: 0 V to 0.8 V (low level)
Schedule B: 2.8 V to 32 V (high level)
Rev. 03/2019 23
4 Product Description
Inputs and outputs Values
Binary input (GPI, general
purpose input)
Go/NoGo and GPO outputs One GPO (General Purpose Output) and one Go/NoGo output
Signal LED Six LEDs are used as status indicators.
ASO output TTL level (5 V)
Pickup input Impedance: 10 k
Ignition coil outputs Output voltage: max. 250 V
Wiring
Input current: max. 20 mA
Low level: 0 V to 0.8 V
High level: 2.8 V to 32 V
(Function dependent on the configuration in MICT, see
Inputs/Outputs – Inputs on page 110)
Implementation as optical MOSFET relay
Maximum switching voltage: 32 V DC
Peak/steady current: max. 100 mA DC
Output power: max. 2.5 W
Internal resistance: 58 Ω to 60 Ω
Activation delay: 0.5 ms / max. 100 mA load
Deactivation delay: 0.2 ms / max. 100 mA load
If a short is found at the output, a safety circuit, which makes
the output highly resistive, is found at the output, so that the
current sets itself at 50 mA to 60 mA.
max. current: ± 10 mA
The voltage supply for active pickup can be set using the
MICT from 5 V to 24 V.
Max. frequency for the pickups: 10 kHz
The formula for determining the frequency of the pickups can
be found in the note following this table.
For a pickup output impedance of 120 to 10 k, the pickups
connected to the MIC5 may not have a higher voltage than
±40 V and the connected power may not exceed 1 W.
Output energy in normal operation: max. 500 mJ (depending
on the ignition coils used)
Output energy in the start-up phase: max. 630 mJ (MIC5),
max. 600 mJ (MIC5-SE)
24 Rev. 03/2019
4 Product Description
Frequency of the pickups
The frequency of the pickup is calculated as per the following formula.
4.1.6 Interfaces
Depending on the device version, the following interfaces are available:
USB Interface
– Compatible with USB 2.0
– The Connector B version is only suitable for temporary data exchange and not for a
permanent connection.
– Max. wire length 5 m (16.4')
CAN Bus Interface
– Classical Extended Frame Format (CAN 2.0B)
– As per ISO 11898 standard, 50 kbit/s to 1 Mbit/s
– Transient-proof (automotive classification)
– Max. 110 participants
– Max. wire length 250 m (820') depending on the transfer rate
RS485 Interface
– According to TIA-485-A (03/2003)
– Max. 32 participants
– Max. data transfer rate 9.6 kbit/s to 115.2 kbit/s
– Max. wire length 100 m (328') depending on the transfer rate
Pay attention to the wiring diagrams
Depending on the device version, certain signals or interfaces described in
these instructions may not be available. You are also always to pay
attention to the wiring diagrams enclosed with the input and output cable
harnesses.
Rev. 03/2019 25
4 Product Description
4.1.7 Requirements for External Equipment
External equipment shall fulfill the input and output specifications of the MIC5.
26 Rev. 03/2019
4 Product Description
4.1.8 Overview Drawings
Standard Version of MIC5 with Service Cover
Devices without a service cover have an input connector at the front of the device.
Rev. 03/2019 27
4 Product Description
28 Rev. 03/2019
4 Product Description
MIC5-SE
Rev. 03/2019 29
4 Product Description
4.1.9 LEDs and Connections
LEDs on the MIC5
Labeling Function
Status LED flashes green when the device is running with no errors. If an error
occurs, the LED is red, for a warning it is yellow.
Firing LED lights up when the ignition is active (exception: during the self test).
Pickup 1 to 3 Flashing LEDs indicate activity of the pickups.
GPO LED is on when the GPO is activated.
Connections and Functions under the Service Cover
30 Rev. 03/2019
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