DETCON -DETONATION CONTROLLER - OPERATING MANUAL - MOTORTECH

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DETCON -DETONATION CONTROLLER - OPERATING MANUAL - MOTORTECH
DetCon –Detonation Controller
                  Operating Manual

                       P/N 01.30.002 | Rev. 02/2019
DETCON -DETONATION CONTROLLER - OPERATING MANUAL - MOTORTECH
Original instructions

Copyright
© Copyright 2019 MOTORTECH GmbH. All rights reserved.
Distribution and reproduction of this publication or parts thereof, regardless of the specific
purpose and form, are not permissible without express written approval by MOTORTECH.
Information contained in this publication may be changed without prior notice.

Trademarks
MOTORTECH products and the MOTORTECH logo are registered and/or common law trademarks
of the MOTORTECH GmbH. All further trademarks and logos displayed or used in this publication
are the property of the respective entitled person.
DETCON -DETONATION CONTROLLER - OPERATING MANUAL - MOTORTECH
Table of Contents

1 General Information .................................................................................................... 6
1.1 What Is the Purpose of this Operating Manual? ......................................................... 6
1.2 Who Is this Operating Manual Targeted to? ............................................................... 6
1.3 Which Symbols Are Used in the Operating Manual? ................................................... 6
1.4 Which Abbreviations/Acronyms Are Used in the Operating Manual? ........................... 7

2 Safety Instructions ..................................................................................................... 9
2.1 General Safety Instructions ..................................................................................... 9
2.2 Electrostatic Discharge Hazards ............................................................................ 10
2.3 Special Safety Instructions for the Device ............................................................... 11
2.4 Proper Disposal .................................................................................................... 12

3 Intended Use ............................................................................................................. 13
3.1 Functional Description .......................................................................................... 13
3.2 Applications ......................................................................................................... 17
3.3 Application in hazardous areas ............................................................................. 17
3.3.1 USA, Canada ...................................................................................................... 17
3.3.2 European Union ................................................................................................. 18

4 Product Description ...................................................................................................20
4.1 Technical Data ...................................................................................................... 20
4.1.1 Certifications ..................................................................................................... 20
4.1.2 Mechanical Data ................................................................................................ 28
4.1.3 Warning Notices on the Device ............................................................................ 29
4.1.4 Product Identification - Labels on the Device ........................................................ 30
4.1.5 Electrical Data .................................................................................................... 31
4.1.6 Interfaces .......................................................................................................... 32
4.1.7 Technical Data of the Detonation Sensors ............................................................ 32
4.1.8 Technical Data of the Ignition Sensor Unit (ISU) ................................................... 34
4.1.9 Technical Data of the Camshaft Sensor ................................................................ 34
4.1.10 Requirements for External Equipment ................................................................ 35
4.1.11 Overview Drawings ........................................................................................... 35

5 Installation Instructions ............................................................................................. 41
5.1 Ground Connection / Protective Conductor Connection on ATEX Enclosure ................ 43
5.2 Lead bushings through the enclosure wall on the ATEX enclosure ............................ 45
5.3 Mounting the Detonation Sensors.......................................................................... 49
5.4 Mounting the Ignition Sensor Unit (ISU) ................................................................. 54
5.5 Mounting the Camshaft Sensor.............................................................................. 56

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Table of Contents

6 Wiring of the Device ................................................................................................... 57
6.1 Wiring of the Detonation Sensors .......................................................................... 57
6.2 Wiring for Ignition Controller with ASO Output ....................................................... 58
6.3 Wiring of the Ignition Sensor Unit (ISU) .................................................................. 60
6.4 Wiring of the Camshaft Sensor (for Diesel and Pilot Injection Engines Only) ............. 62
6.5 Wiring of the Binary Outputs ................................................................................. 64
6.6 Wiring of the Analog Outputs for Ignition Timing Reduction ..................................... 65
6.7 Wiring CAN Bus .................................................................................................... 66

7 Functions ................................................................................................................... 67
7.1 Ignition Timing Reduction ...................................................................................... 67
7.2 Load Reduction .................................................................................................... 67
7.3 Engine Stop ......................................................................................................... 67

8 DenEdit Settings ....................................................................................................... 68
8.1 DenEdit System Requirements ............................................................................... 68
8.2 Installation and First Steps in DenEdit ................................................................... 69
8.3 User Interface Overview ........................................................................................ 72
8.4 Menu Bar and Toolbar .......................................................................................... 73
8.5 Display Area of the Analog Output Signal and the Knocking Intensity....................... 74
8.6 Error and Status Displays ..................................................................................... 74
8.7 Tabs for Process Monitoring .................................................................................. 76
8.7.1 Tab: Actual Knocking Values ............................................................................... 76
8.7.2 Tab: Knocking History ........................................................................................ 77
8.8 Tabs for the Process Parameters ........................................................................... 77
8.8.1 Tab: Mode ......................................................................................................... 78
8.8.2 Tab: Knocking Params ....................................................................................... 79
8.8.3 Tab: Input Gains ................................................................................................ 80
8.8.4 Tab: Firing Sequence ......................................................................................... 80
8.8.5 Tab: Output Options .......................................................................................... 81
8.8.6 Tab: CAN Params............................................................................................... 82
8.9 Status Bar ........................................................................................................... 83

9 Operation ................................................................................................................. 84
9.1 Start-up ............................................................................................................... 84
9.2 Shutdown ............................................................................................................ 84

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10 Disturbances ............................................................................................................85

11 Maintenance............................................................................................................ 86
11.1 Spare Parts and Accessories ................................................................................. 86

12 Index .......................................................................................................................87

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DETCON -DETONATION CONTROLLER - OPERATING MANUAL - MOTORTECH
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.

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                   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
 ASO           Auxiliary                                        Output of the MOTORTECH
               Synchroni-                                       ignition controllers for
               zation Output                                    synchronization with the
                                                                DetCon
 CAN           Controller Area         Bus for control          Asynchronous serial
 Bus           Network Bus             devices / networks       connection system for
                                                                networking control devices
 CE            Conformité              Conformity with EU       Mark based on EU legislation
               Européenne              directives               for certain products in
                                                                conjunction with product safety
 CSA           Canadian Standards                               Organization that defines
               Association                                      standards, inspects products
                                                                for safety compliance, and
                                                                issues pertinent certifications.
 DC            Direct Current
 DetCon        Detonation                                       Serves to prevent major engine
               Controller                                       damage that can be caused by
                                                                knocking combustion.
 EMI           Electromagnetic
               Interference
 EMC           Electromagnetic                                  Compatibility of electrical or
               Compatibility                                    electronic equipment items
                                                                with their surroundings
 HV            High Voltage
 ISU           Ignition Sensor Unit
 °KW           Crankshaft angle in                              Unit for the rotation angle of
               degrees                                          the crankshaft

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1 General Information

Abb.     Term                   Description   Explanation
LED      Light Emitting Diode                 Light emitting electronic semi-
                                              conductor
MIC      MOTORTECH Ignition
         Controller
USB      Universal Serial Bus                 Serial wiring system to connect
                                              a computer to external
                                              equipment

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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
                 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.

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.

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–    Avoid all activities that can impair the function of the equipment.
–    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. Pay attention to a
     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 enclosure of the device.

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2 Safety Instructions

2.3 Special Safety Instructions for the Device

               High voltage! Danger to life!
               There is danger to life while the engine is operating due to high voltage. The
               following safety instructions must therefore be observed when the engine is
               running:
               –   Do not touch the ignition sensor unit (ISU)
               –   Do not remove the ignition sensor unit (ISU)
               –   Do not loosen the wiring

               Risk of destruction due to electrostatic discharge!
               The DetCon detonation controller may only be installed in a switch cabinet
               by qualified personnel trained in the handling of ESD-endangered
               components, observing the ESD regulations. The ESD standard IEC 61340-5-
               1:2016 must be observed during installation. No warranty is given for
               damage due to electrostatic discharge.

               Operational safety
               The DetCon detonation controller requires high voltage ignition wires
               with integrated 5 kΩ resistance, as otherwise interference in the detonation
               sensor signals may be caused. Any other ignition wires must be replaced.

               Risk of damage
               The detonation sensor attachment screws must not be tightened too firmly,
               as otherwise the sensors will be damaged and no longer function
               properly.Observe the following information for sensor mounting:
               –   Torque: 20 Nm ± 5 Nm (14.8 ± 3.7 lb-ft) for mounting screws:
                   – made of cast iron: M8 x 25 mm (0.98"), Strength: 8.8
                   – made of aluminium: M8 x 30 mm (1.18"), strength: 8.8
               –   Torque: 15 Nm ± 5 Nm (11 lb-ft ±2.2 lb-ft) for M6 fixing screws, strength
                   10.9 with sleeve

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2 Safety Instructions

                 Operational safety
                 Please note that the detonation sensors must be mounted according to the
                 firing order of the cylinders. Refer to the pertinent section Wiring of the
                 Detonation Sensors on page 57.

                 Detonation detection
                 The DetCon detonation controller detects knocking as far as possible, but
                 not bindingly.

                 DetCon only usable in single ignition mode
                 V-engines can only use the DetCon detonation controller with single
                 ignition and not in double ignition mode.
                 The DetCon uses two time windows per cylinder to detect engine knocking.
                 These time windows are opened in single ignition mode based on the
                 ignition pulse. In double ignition mode it is not possible to correctly assign
                 the time windows to all cylinders.

2.4 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.

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3.1 Functional Description

                             Pos.    Designation
                                     Valve
                                     Spark plug
                                     Piston

                             Normal Combustion
                             The graphics    show the desired type of
                             combustion of the gas/air mixture in the
                             combustion chamber. The ignition spark
                             ignites the gas/air mixture. The flame front
                             spreads out evenly in the combustion
                             chamber with the specific laminar flame
                             speed of the gas/air mixture. The cylinder
                             pressure increases slightly during
                             combustion.

                             Knocking Combustion
                             Knocking combustion arises if the gas/air
                             mixture self-ignites before the actual flame
                             front, but after the ignition . This system
                             does not detect so-called early ignition.
                             The reason for this is an excessive increase
                             in pressure and temperature of the as yet
                             non-combusted mixture due to the pressure
                             and temperature fronts preceding the normal
                             flame front. The pressure and temperature
                             fronts arising from the self-ignition, in turn,
                             make further self-ignitions possible. High-
                             frequency pressure waves arise in the
                             combustion chamber, which are introduced
                             into the engine structure via the walls of the
                             combustion chamber and released as air-
                             borne noise into the environment. The
                             knocking becomes audible in this way .
                             Compared to normal combustion,
                             significantly higher peak pressures arise,
                             which may lead to major engine damage in
                             addition to the higher thermal load.

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Detonation Control System – Overview

 Pos. no      Description                    Pos. no      Description
              DetCon detonation controller                Wiring rail (ignition)

              Detonation sensor wiring                    PowerView3

              Detonation sensor                           ALL-IN-ONE

              Ignition controller                         Laptop

Detonation Controller
The task of the DetCon detonation controller is to avoid engine damage from knocking
combustion.
Vibration occurs in the engine compartment during the combustion process. These have a
frequency which is characteristic for the engine type. The DetCon measures the vibratory energy
within a narrow frequency range which is typical for the respective engine. The energy measured
is proportional to the knocking level.
Measurement is only carried out within operating cycles in which combustion is possible. This
increases the sensitivity of the measurement and minimizes its reaction to random noises. The
operating cycles are determined according to application and the ignition controller used via an
auxiliary synchronization output, an ignition sensor unit (ISU) or a camshaft sensor.

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The following diagram and the explanations below it illustrate the basic control process of the
system:

 Term used in diagram            Description
 Knocking Level                  Example of the progression of knocking energy
 IMMEDIATE STOP LIMIT            The maximum value at which the engine is stopped
 IGNITION REDUCTION LIMIT        The maximum value upon which an ignition timing reduction
                                 is performed
 ENGINE KNOCKING (binary         Signal on the binary output indicating knocking.
 output)
 LOAD REDUCTION (binary          Signal on the binary output effecting load reduction.
 output)
 TRIP (binary output)            Signal on the binary output indicating that the IMMEDIATE
                                 STOP LIMIT has been exceeded or that a faulty sensor has
                                 been detected.
 Timing Reduction (analog        Curve of the analog signal for timing reduction
 output)
 MAX. LEVEL OF ANALOG            Maximum value of the timing reduction
 OUTPUT
 Timing Reduction Gain           Speed of the timing reduction
 Decrease Ramp                   Speed of the timing reduction
 Delay after load reduction      Delay time following a load reduction

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3 Intended Use

The measured knocking energy (Knocking Level curve) is compared in every cycle with a preset
maximum value (IGNITION REDUCTION LIMIT). If this maximum value is reached, the binary
output ENGINE KNOCKING is activated. At the same time, the analog outputs change their values
(Timing Reduction curve). The rate at which the value of the signal changes is specified by the
setting Timing Reduction Gain. The analog signals are transmitted to the ignition controller, thus
adjusting the ignition timing. If this causes the knocking energy to fall below the maximum
value, the values at the analog outputs are also reduced. The rate of this reduction is adjusted
according to the preset value Decrease Ramp.
If the ignition timing can no longer be corrected via the analog outputs and the engine is still
knocking, the binary output for load reduction (LOAD REDUCTION) is activated. A master control
(e.g. ALL-IN-ONE) can control load reduction via this output.
LOAD REDUCTION is deactivated again if the engine knocking stops. However, the analog
outputs remain active for a further period which is set via the function Delay after load reduction.
This period must be longer than required for reaching full load.
The third binary output, i.e. TRIP, is activated when the knocking exceeds the maximum value
IMMEDIATE STOP LIMIT. This can be used as an emergency stop signal to force the engine to stop.

                 Checkbox Enable bad sensor detect
                 Activate the checkbox so that faulty knock sensors are indicated by the BAD
                 SENSOR status display. This function only detects sensors that supply
                 faulty signals. If there is a cable break or a sensor does not supply a signal
                 at all for any other reason, this is not indicated. If a faulty sensor is
                 detected, the binary output TRIP is also switched..

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3.2 Applications
The DetCon detonation controller can analyze two-stroke and four-stroke engines with up to 20
cylinders and up to a maximum 1 kHz ignition frequency. The device is available in two versions:
–   DetCon2 for two detonation sensors
–   DetCon20 for up to 20 detonation sensors

Both device types are available as a built-in device for a control cabinet or with a CSA certified
enclosure. The following manual applies to both device types. Any differences between the two
versions are clearly identified.
In order to define the time frame for potential knocking, the detonation controller must know the
ignition timing of the first cylinder in the firing sequence. Depending on the application and the
ignition controller used, this can be determined in different ways:
–   Gas engines:
    – MOTORTECH ignition controllers with auxiliary synchronization output ASO (e. g. MIC6)
         The ignition timing is determined via the signal on the ASO output. No other sensor is
         required.
    – Ignition controllers without ASO output:
         The ignition timing is determined using a signal from the ignition sensor unit (ISU)
         connected between the ignition output and the ignition coil of the first cylinder

–   Diesel and pilot injection engines:
    – The fuel injection timing is determined using the signal from an inductive camshaft
         sensor.

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.

3.3 Application in hazardous areas

3.3.1 USA, Canada
The DetCon detonation controller is certified by the CSA for use in a Class I, Division 2, Groups C
and D, T4 hazardous area in the USA and Canada. It is essential that you observe the
instructions of the CSA certificate 1401608 (LR 211392) (see Certification section).
The DetCon detonation controller can be supplied in a CSA-certified housing (P/N 43.00.102, P/N
43.00.202, P/N 43.00.120, P/N 43.00.220) or installed in an appropriately certified switch
cabinet and thus complies with the guidelines mentioned in the Certification section.

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3 Intended Use

3.3.2 European Union
The DetCon detonation controller in ATEX enclosure is certified according to ATEX directive
2014/34/EU for use in a potentially explosive atmosphere in the European Union:

      II 3G Ex ec IIA T4

 Labeling                  Description
                           Symbol for explosion protection, the product complies with ATEX
                           directive 2014/34/EU
 II                        Device group
                           II = Ex-areas with the exception of mines at risk of firedamp
 3G                        Equipment category
                           3 = Ex-hazard rare and short-term
                           Substance group
                           G = Gases
 Ex                        Explosion protection according to EN 60079-xx, (-0, -7 )
 ec                        Type of ignition protection
                           ec = Device protection through increased safety "e"
 IIA                       Subdivision into explosion groups:
                           II = Gases
                           A = Gases such as propane
 T4                        Temperature class
                           T4 = max. surface temperature ≤ +135 °C (+275 °F)
 X                         X = Special conditions must be observed when using the operating
                           resources

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Instructions for handling the DetCon20 detonation controller in hazardous areas

                 Danger of explosion!
                 Only use the detonation sensor approved by MOTORTECH and the required
                 number of blocking capacitor boards for operation in hazardous areas.

                 P/N                     Description
                 43.20.001               Detonation sensor without sensor lead, two-pole
                 43.30.004-60            Detonation sensor lead, 18 m (59.06 ft)
                 43.20.029               Blocking capacitor board (ATEX)

                 Danger of explosion!
                 The USB interface may only be used in a non-hazardous atmosphere. There
                 is a danger of sparking.

                 Sealing of the enclosure to the enclosure cover
                 The enclosure is sealed against the enclosure cover by a foamed silicone
                 seal. The overlapping of the foam bead (start point/end point) of the seal
                 cannot be produced without any joints due to the material, but has no
                 influence on the specified IP protection class.

                 Use MOTORTECH detonation sensors
                 DetCon detonation controller systems are parameterized for operation with
                 MOTORTECH detonation sensors (piezoelectric acceleration transducers).
                 The use of other sensors entails a new calibration of the engine.

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4 Product Description

4.1 Technical Data

4.1.1 Certifications
The detonation controller of the DetCon series are certified as per the following regulations:

CSA
The DetCon detonation controllers can be supplied in a CSA certified enclosure.
The applied requirements are:
–    Class I, Div. 2, Group C,D; T4

–    CSA Std. C22.2 No. 0-10

–    CSA Std. C22.2 No. 142-M1987 (R 2004)

–    CSA Std. C22.2 No. 213-M1987 (R 2004)

–    ANSI/ISA 12.12.01, Ed. 1 (2007)

–    UL Std. No. 916, Ed. 3 (1998)

The corresponding directives are also met if the DetCon detonation controller is installed in a
correspondingly certified switch cabinet.

 P/N            Device                  Description
 43.00.002      DetCon2 Detonation      Two inputs, CSA, IP20, for mounting in a CSA-
                Controlle               certified control cabinet
 43.00.102      DetCon2 Detonation      Two inputs, IP 20, built into a CSA-certified
                Controller              enclosure, including ISU ignition sensor unit P/N
                                        43.20.002
 43.00.202      DetCon2 Detonation      Two inputs, IP 20, built into a CSA-certified
                Controller              enclosure
 43.00.020      DetCon20 Detonation     20 inputs, CSA, IP20, for mounting in a CSA-certified
                Controller              control cabinet
 43.00.120      DetCon20 Detonation     20 inputs, IP 20, built into a CSA-certified enclosure,
                Controller              including ISU Ignition sensor unit P/N 43.20.002
 43.00.220      DetCon20 Detonation     20 inputs, IP 20, built into a CSA-certified enclosure
                Controller

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CE
The DetCon detonation controllers P/N 43.00.002, P/N 43.00.020 and P/N 43.50.033 comply
with the following EU directives:
–   EMC Directive 2014/30/EU
    – EN 61000-6-1:2007
         Electromagnetic compatibility (EMC) - Part 6-1: Generic standards –
         Immunity to interference for residential, commercial and light-industrial environments
    – EN 61000-6-2:2005 + AC:2005
         Electromagnetic compatibility (EMC) – Part 6-2: Generic standards –
         Immunity for industrial environments
    – EN 61000-6-3:2007 + A1:2011 + AC:2012
         Electromagnetic compatibility (EMC) – Part 6-3: Generic standards –
         Emission for residential, commercial and light-industrial environments
    – EN 61000-6-4:2007 + A1:2011
         Electromagnetic compatibility (EMC) – Part 6-4: Generic standards –
         Emission for industrial environments

–   RoHS Directive 2011/65/EU
    – Other standards applied:
    – EN 61010-1:2010
         Safety requirements for electrical equipment for measurement, control, and laboratory
         use –
         Part 1: General requirements

 P/N             Device                        Description
 43.00.002       DetCon2 Detonation            Two inputs, CSA, IP20, in use without control
                 Controller                    cabinet only in non-hazardous areas
 43.00.020       DetCon20 Detonation           20 inputs, CSA, IP20, in use without control
                 Controller                    cabinet only in non-hazardous areas
 43.50.003       DetCon20 Detonation           20 inputs, IP20, exclusively for use in non-
                 Controller                    hazardous areas

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4 Product Description

The DetCon detonation controller can be supplied in an ATEX-certified enclosure (P/N 93.43.220)
and additionally complies with the following directive:
–    ATEX Directive 2014/34/EU
     – EN 60079-0:2012 + A11:2013
        Potentially explosive atmospheres – Part 0: Equipment – General requirements
     – EN 60079-7:2015 + A1:2018
        Potentially explosive atmospheres – Part 7: Equipment protection by increased safety "e

 P/N            Device                       Description
 93.43.220      DetCon20 Detonation          20 inputs, IP 20, built into an ATEX-certified
                Controller                   enclosure

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4.1.2 Mechanical Data
The DetCon has the following mechanical characteristics:

 Feature                          Value
 Dimensions of the electric unit DetCon2
 (incl. DIN rail clamps)         160 mm x 147 mm x 52 mm (6.3" x 7.36" x 2.05")
                                 (length x width x height)
                                  DetCon20
                                  160 mm x 187 mm x 52 mm (6.3" x 5.78" x 2.05")
                                  (length x width x height)
                                  Device in certified enclosure (CSA, ATEX)
                                  300 mm x 300 mm x 300 mm x 120 mm (11.81" x 11.81" x
                                  4.92")
                                  (length x width x height)
                                  For details, see chapter Overview Drawings on page 35
 Mounting for the electric unit   DIN rail mounting
 Weight                           DetCon2: 0.59 kg (1.30 lbs)
                                  DetCon20: 0.74 kg (1.63 lbs)
 Shape of device                  See chapter Overview Drawings on page 35
 Mechanical Environmental         Protection: IP 20
 Conditions
                                  Protection class in potentially hazardous areas ( enclosure
                                  variants): IP 66
 Climatic Environmental           DetCon without enclosure
 Conditions
                                  Ambient temperature: –10 °C to +60 °C (+14 °F to +140 °F)
                                  Storage temperature; –40 °C to +80 °C (–40 °F to +176 °F)
                                  Device in certified enclosure (CSA, ATEX)
                                  Ambient temperature: –10 °C to +60 °C (+14 °F to +140 °F)
                                  Storage temperature (CSA): –20 °C to +80 °C (–4 °F to +176
                                  °F)
                                  Storage temperature (ATEX): –30 °C to +80 °C (–22 °F to
                                  +176 °F)
                                  max. 95% humidity without condensation

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4.1.3 Warning Notices on the Device
The safety instructions on the device or on the enclosure are valid for the DetCon and all
connected components.

 Variant          Information text
 ATEX and CSA     WARNING – EXPLOSION HAZARD – Substitution of components may
                  impair suitability for Class I, Division 2. Do not disconnect equipment
                  unless power has been switched off or the area is known to be non-
                  hazardous.
 All              WARNING! Read and understand the installation and operation manuals
                  prior to installing or making any adjustments.
 ATEX             EXPLOSION HAZARD – Do not open enclosure or disconnect while circuit
                  is live unless area is known to be non-hazardous. For wiring details
                  please refer to operation manual.
 ATEX             The device must be installed and operated only in an environment that
                  ensures a pollution degree 2 (or better) according to IEC/EN 60664-1.
 All              CAUTION – Do not pressure wash this ignition module. Damage to
                  electronic components may result.
 CSA              EXPLOSION HAZARD – Do not disconnect while circuit is live unless area
                  is known to be non-hazardous. For wiring details please refer to
                  operation manual

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4.1.4 Product Identification - Labels on the Device
On the device you will find the necessary numbers for a clear product identification:

Example:
DetCon in ATEX-certified enclosure

 Abbreviation       Description
 P/N                Part number of the device
 S/N                Serial number of the device
 2019               Year of construction of the device

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4.1.5 Electrical Data
The DetCon has the following electrical characteristics:

 Feature                              Value
 Rated current                        0.1 A to 0,3 A
 Power consumption                    0.1 A at 24 V
                                      0.1 A at 36 V
                                      0.3 A at 9 V
 Supply voltag                        9 V DC to 36 V DC
 ATEX: Protective conductor cross-    4 mm2 to 35 mm2 ( observe EN 60079-0:2014-06, 15.3)
 section

Electrical Data for Inputs and Outputs
The inputs and outputs have the following electrical data:

 Inputs and outputs             Values
 Ignition pulse input           Input resistance 220 /1 k
                                Max. input voltage:
                                24 V at a load resistance of 220 
                                36 V at a load resistance of 1 k
                                Max. frequency 800 Hz
 Detonation sensor input        Input resistance > 1 M
 4-20 mA output                 Max. voltage 30 V
                                Current accuracy ± 2%
 0-5 V output                   Max. current 2 mA
                                Voltage accuracy ± 2%
                                Auxiliary power 5 V DC required
 Binary outputs                 All three outputs share a single connection and are potential-
                                free (galvanically separated optocouplers).
                                Max. voltage 33 V
                                Max. current 50 mA

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4.1.6 Interfaces
USB Interface
– Compatible with USB 1.1
–    Connector B version
–    Transfer rate 1 MBit/s

                  Danger of explosion!
                  The USB interface may only be used in a non-hazardous atmosphere. There
                  is a danger of sparking.

CAN Bus Interface
– Galvanically isolated
–    Baud rate 250 kBd

4.1.7 Technical Data of the Detonation Sensors

                  Use MOTORTECH detonation sensors
                  DetCon detonation controller systems are parameterized for operation with
                  MOTORTECH detonation sensors (piezoelectric acceleration transducers).
                  The use of other sensors entails a new calibration of the engine.

                  Danger of explosion!
                  Only use the detonation sensor approved by MOTORTECH and the required
                  number of blocking capacitor boards for operation in hazardous areas.

                   P/N                   Description
                   43.20.001             Detonation sensor without sensor lead, two-pole
                   43.30.004-60          Detonation sensor lead, 18 m (59.06 ft)
                   43.20.029             Blocking capacitor board (ATEX)

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The MOTORTECH detonation sensors have the following technical data:

 Feature                   Value
 Sensor principle          Piezoelectric acceleration transducer
 Sensor type               MOTORTECH
 Frequency range           1 kHz to 20 kHz
 Resonance frequency       > 20 kHz
 Temperature range         –40 °C to +130 °C (–40 °F to +266 °F)
 Dimensions, Sensor        45 mm x 20 mm x 21 mm (1,77'' x 0,79'' x 0,83'')
                           (see Mounting the Knocking Sensors)
 Sensor mount              Torque: 20 Nm ± 5 Nm (14.8 lb-ft ± 3.7 lb-ft) for the following
                           fixing screws:
                           –   Cast iron: M8 x 25 mm (0.98"), strength 8.8
                           –   Aluminium: M8 x 30 mm (1.18") , Strength 8.8

                           Torque: 15 Nm ± 5 Nm (11 lb-ft ±2.2 lb-ft) for the following fixing
                           screws:
                           –   M6, strength 10.9 with sleeve for fixing to the cylinder head
                               screw.

                           If necessary, the material of the cylinder head screw on which
                           the sensor is mounted should also be taken into account

Blocking capacitor board for use in potentially explosive atmospheres
The blocking capacitor board serves as a safety barrier between the DetCon20 and the
Knock sensors, which makes the use of knock sensors in potentially explosive areas
is made possible.
The blocking capacitor board has the following technical data:

 Feature               Value
 Temperature range     –10 °C to +60 °C (+14 °F to +140 °F)
 Dimensions (mm)       40 mm x 47 mm x 12 mm (1.57" x 1.85" x 0.019 ")
 Flammability class    UL 94-V2
 Article number        P/N 43.20.029

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4.1.8 Technical Data of the Ignition Sensor Unit (ISU)
The ignition sensor unit has the following technical data:

 Feature                    Value
 Sensor principle           Signal transducer
 Sensor type                MOTORTECH
 Voltage                    90 V DC to 300 V DC
 supply
 Temperature range          –25 °C to +70 °C (–13 °F to +158 °F)
 Dimensions, Sensor         75.5 mm x 44.25 mm x 49 mm (2.97" x 1.74" x 1.93") incl. DIN
                            rail
                            (see Mounting the Ignition Sensor Unit (ISU) on page 53)
 Sensor mount               DIN rail mounting

4.1.9 Technical Data of the Camshaft Sensor
The camshaft sensor has the following technical data:

 Feature                    Value
 Sensor principle           active, inductive proximity switching sensor
 Sensor type                MOTORTECH
 Voltage                    15 to 34 V DC
 supply
 Temperature range          –25 °C to +85 °C (–13 °F to +185 °F)
 Dimensions, Sensor         M12 x 1 thread; length 60 mm (2.36") or 100 mm (3.94")
 Sensor mount               Nut M12 x 1

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4.1.10 Requirements for External Equipment
External equipment shall fulfill the input and output specifications of the DetCon.

4.1.11 Overview Drawings
DetCon2 – Dimensions

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DetCon2 – Ports/Connections and LEDs

For the functions of the individual ports/connections and LEDs, please refer to the table
following the drawings accompanying the DetCon20.

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DetCon20 – Dimensions

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DetCon20 – Ports/Connections and LEDs

 Labeling               Function
 LOAD RESISTANCE        Jumper which must be removed if no ignition sensor unit (ISU) is
                        used (when using a camshaft sensor or MOTORTECH ignition
                        controllers with ASO output)
 Sensor A-B (DetCon2)   Connections of the detonation sensors (A=white, B=brown,
 Sensor 1-20            S=shield) (see Wiring of the Detonation Sensors on page 57)
 (DetCon20)
 Timing1, Timing2,      Connections for the ignition sensor unit (ISU) or the camshaft
 Shield 0 V, +24 V      sensor (see Wiring of the Ignition Sensor Unit (ISU) on page 59 or
                        Wiring of the Camshaft Sensor (for Diesel and Pilot Injection Engines
                        Only) on page 62)
 IGNITION PULSE (LED)   This LED flashes when an ignition pulse is transmitted to the
                        DetCon.

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 Labeling                 Function
 KNOCKING SENSORS         The LEDs flash if knocking has been detected on the associated
 (LEDs)                   cylinders. If the checkbox Enable knock LED latch (switch ON/OFF to
                          reset) is activated in the Output options tab, the LEDs light up
                          permanently as soon as a knock has occurred, instead of flashing.
                          In this case the LEDs must also be reset manually (see Tab: Output
                          Options on page 81 )
 USB (LED)                This LED flashes when data is being transferred via the USB
                          connection.
 CAN TX and RX (LEDs)     These LEDs flash when data is being transferred via the CAN bus
                          (RX=data is being received, TX=data is being transmitted).
 POWER SUPPLY (LED)       This LED lights up if the supply voltage is available.
 BINARY OUTPUTS           These LEDs light up if the respective binary output (Engine
 (LEDs)                   Knocking, Trip, Load Reduction) has been activated.
 TIMING REDUCTION         This LED lights up if an ignition timing reduction has been executed
 ANALOG OUTPUTS           via one of the two analog outputs (0-5 V or 4-20 mA).
 (LED)
 USB                      Port for the data transmission to the PC.
 CAN (H, COM, L)          Port for communication via CAN bus with master control devices
                          (such as ALL-IN-ONE).
 9-36 V DC (pos., neg.,   Connection for the voltage supply
 ground)
 Common                   Reference potential for the binary outputs (+ or –)
 Engine Knocking, Trip,   Connections of the binary outputs
 Load Reduction
 0 V DC, 0-5 V DC,        Connections of the analog 0-5 V output (see Wiring of the Analog
 +5 V DC                  Outputs for Ignition Timing Reduction on page 64)
 4-20 mA-, 4-20 mA+       Connections of the analog 4-20 mA output (see Wiring of the Analog
                          Outputs for Ignition Timing Reduction on page 64)

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DetCon Model in Enclosure – Dimensions (CSA Certified)

DetCon variant in ATEX enclosure – Dimensions

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Unpack the equipment, taking care not to damage it, and ensure that the operating manual is
always stored with the equipment and is easily accessible. Check the contents for completeness
and verify that the device type meets your application requirements.

Scope of Supply
The supply scope of the device consists of the following components:
–    DetCon detonation controller
–    CD-ROM with software for configuring the device
–    USB interface lead for connecting the device to a PC/laptop
–    Operating Manual
–    additionally provided for the model with enclosure: screw set and screw joints

Installation locations where strong vibrations or ambient temperatures of below –40 °C (–40 °F)
or above +70 °C (+158 °F) are present are not permissible and result in the warranty being
voided.

                  Danger of explosion!
                  In order to prevent the connection terminals from falling out or loosening,
                  brackets must be mounted on the DetCon detonation controller in
                  potentially explosive areas which are screwed over the connection
                  terminals before commissioning and thus fix them in place. There is a
                  danger of sparking.

                  Danger of explosion!
                  The device may only be installed and operated in hazardous areas in an
                  environment that ensures pollution degree 2 (or better, danger of leakage
                  currents) according to IEC/EN 60664-1. There is a danger of sparking

                  Danger of explosion!
                  Do not disconnect connections as long as the circuit is active unless the
                  environment is classified as non-explosive. Refer to the operating
                  instructions for wiring instructions. There is a danger of sparking.

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             ATEX Protection!
             Some versions of the ATEX-certified DetCon20 have an external ATEX
             protection connected to the CAN bus and the inputs. This external ATEX
             protection must not be removed in order to prevent possible flying sparks.
             If you do not see this protection externally, it is installed internally.

             Risk of Destruction!
             When mounting the device, it must be ensured that no vibrations occur
             during operation and that temperatures are not exceeded. Otherwise
             electronic components can be destroyed. Please read the section
             Mechanical data.

             Use of wire end sleeves
             When connecting the cables to the DetCon detonation controller, use wire
             end sleeves to protect the stripped ends.

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5.1 Ground Connection / Protective Conductor Connection on ATEX Enclosure
The external protective conductor connection is located on the outside of the DetCon20
detonation controller enclosure.

                 Requirements EN 60439-1:2014-06, 15.3 to be observed!
                 The external protective conductor must always be connected.

1.   Connect the external protective conductor to the corresponding connection as shown in the
     following figure.

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 Pos. no       Description
               Blind rivet nut for M8
               Enclosure
               Washer ISO 7092-8.4
               External protective conductor: Minimum cross section is 4 mm2,
               Observe EN 60079-0:2014-06, 15.3!
               Ring lead lugs DIN 46234, nominal cross section > 2.5 mm2-35 mm2
               Tubular lead lugs DIN 46235, nominal cross section 10 mm2 - 35 mm2
               Spring washer DIN 127-B8
               Hexagon nut ISO 4017-M8x20

                 Protective conductor connections of the ATEX enclosure
                 All protective conductor connections of the ATEX enclosure are designed in
                 M 8.

                 Connection of external protective conductor
                 The external protective conductor is connected with the enclosed stainless
                 steel screws, nuts, washers and lock washers. The external protective
                 conductor must be provided with a commercially available lead lug of
                 suitable cross-section and ring diameter. The lead lugs selected must
                 comply with one of the following standards:
                 –   DIN 46234 for lead lug
                 –   DIN 46235 for tubular lead lugs

The cross-section for the protective conductor must be dimensioned as follows:

 Cross section of phase      Minimum cross section of corresponding
 conductor S [mm2]           protective conductor Sp [mm2]
 S  16                      S
 16 < S  35                 16
 S > 35                      0.5 x S

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                 Observe requirements EN 60439-0
                 –   The protective conductor connection parts are designed for a minimum
                     cross-section of 4 mm2.
                 –   When installing the external protective conductor connection, care
                     must be taken to ensure that the conductors are secured against
                     twisting and loosening. This is achieved by professionally and firmly
                     laying the protective conductors close to the enclosure body.
                 –   Applying a torque of 10 Nm to the screw connection ensures sufficient
                     contact pressure in conjunction with the enclosed spring washer.
                 –   The choice of materials for the protective conductor connection is such
                     that electrochemical corrosion is not to be expected. Protective
                     conductors must be adequately protected against mechanical,
                     electrodynamic and thermodynamic influences and forces.
                 –   Mechanical connections of protective conductors must be accessible
                     for inspection and testing.

5.2 Lead bushings through the enclosure wall on the ATEX enclosure
In order to be able to connect the DetCon-detonation controller to other devices, the leads must
be conducted through openings in the enclosure wall. This is possible in the form of screw
connections.

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Maximum number of lead bushings
The maximum number of lead bushings depends on their size.
The maximum number for each side of the enclosure is selected according to the following table
so that the side walls are not weakened and the stability of the enclosure is not impaired.

 Screw size Side A        Side B        Side C       Side D
 M 12        33           31            33           33
 M 16        19           17            29           29
 M 20        16           14            16           16
 M 25        13           11            13           13
 M 32        4            2             9            9
 M 40        3            1             3            3
 M 50        2            1             2            2

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               Type examination certificate
               All lead bushings and cable bushings must have a separate EC type
               examination certificate.
               Dummy plugs used require a separate EC type examination certificate.

               Operational safety
               All lead bushings must be mounted with a metal locknut.
               When using lead bushings with strain relief and bending protection, the
               number of possible standard lead glands is reduced.
               Mixed fitting of lead bushings is possible. Areas for intrinsically safe
               circuits must be marked separately.
               Unused openings for lead bushings must be closed with blind plugs made
               of cold impact resistant plastic or metal.
               The lead bushings must be mounted in such a way that independent
               loosening is prevented and permanent sealing of the lead and lead entry
               points can be guaranteed. Lead ties are used for lead fixing.
               The spacing of the lead bushings must be selected so that a torque wrench
               can be used to tighten the lead bushings and cap nuts. .

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Tightening torques
The tightening torques must be observed when installing the cable bushings. If no specific
information is available, the following values must be used.

Size       Tightening torque   Tightening torque of      Tightening torque of Core-
           of connecting piece cap nuts [Nm (lb-ft)]     locknut [Nm (lb-ft)] perforated-
           [Nm (lb-ft)]                                                       diameter
                                                                              [mm]

           Brass    Polyamide Brass         Polyamide    Brass     Polyamide

M 12x1.5 2.5        2.5          2.0        2.0          2.5       2.5          12.5
         (1.8)      (1.8)        (1.48)     (1.48)       (1.8)     (1.8)
M 16x1.5 4.0        4.0          2.5        2.5          4.0       4.0          16.5
         (2.95)     (2.95)       (1.8)      (1.8)        (2.95)    (2.95)
M 20x1.5 4.0        4.0          2.5        3.5          4.0       4.0          20.5
         (2.95)     (2.95)       (1.8)      (2.58)       (2.95)    (2.95)
M 25x1.5 7.5        7.5          12.0       5.0          7.5       7.5          25.5
         (5.53)     (5.53)       (8.85)     (3.69)       (5.53)    (5.53)
M 32x1.5 7.5        7.5          12.0       12.0         7.5       7.5          32.5
         (5.53)     (5.53)       (8.85)     (8.85)       (5.53)    (5.53)
M 40x1.5 7.5        7.5          12.0       12.0         7.5       7.5          40.5
         (5.53)     (5.53)       (8.85)     (8.85)       (5.53)    (5.53)
M 50x1.5 7.5        7.5          12.0       12.0         7.5       7.5          50.5
         (5.53)     (5.53)       (8.85)     (8.85)       (5.53)    (5.53)

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5.3 Mounting the Detonation Sensors
               Danger of explosion!
               Only use the detonation sensor approved by MOTORTECH and the required
               number of blocking capacitor boards for operation in hazardous areas.

                P/N                    Description
                43.20.001              Detonation sensor without sensor lead, two-pole
                43.30.004-60           Detonation sensor lead, 18 m (59.06 ft)
                43.20.029              Blocking capacitor board (ATEX)

               Use MOTORTECH detonation sensors
               DetCon detonation controller systems are parameterized for operation with
               MOTORTECH detonation sensors (piezoelectric acceleration transducers).
               The use of other sensors entails a new calibration of the engine.

               Observe the instructions of the engine manufacturer
               The following mounting instructions are for orientation only. In any case,
               observe the instructions of the respective engine manufacturer for the
               installation of detonation sensors and the installation of detonation
               controllers.

Dimensions of the Sensor

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Dimensions of the Required Bore

An M6 screw can also be used as an alternative to M8 screw for the mounting of the detonation
sensor. In this case, however, an adapter sleeve must be used in the sensor to close in the
resultant hollow space, thus ensuring optimal signal transmission.

Mounting
In order to ensure the best functioning of the DetCon detonation controller, it is mandatory to
install the sensors as follows:
–    There must be a direct connection to the engine block.
–    Installations without a direct connection to the engine block (e. g. with sealings) are
     unsuitable.
–    Only the metal surface of the sensor may rest on the engine.
–    Do not use washers, spring washers, or toothed washers.
–    The knocking sensors may not come into contact with liquids (e. g. oil, coolant, water) over a
     longer period of time

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                 Risk of Destruction!
                 The fastening screws of the knock sensors must not be tightened too much,
                 otherwise the sensors will be damaged and will no longer function properly.
                 Observe the following information for sensor mounting:
                 –    Torque: 20 Nm ± 5 Nm (14.8 ± 3.7 lb-ft) for mounting screws:
                      – made of cast iron: M8 x 25 mm (0.98"), Strength: 8.8
                      – aluminium: M8 x 30 mm (1.18"), strength: 8.8
                 –    Torque: 15 Nm ± 5 Nm (11 lb-ft ±2.2 lb-ft) for M6 fixing screws, strength
                      10.9 with sleeve .

The torque for mounting in the case of mounting with M8 screws (strength 8.8) is 20 Nm ±5 Nm
(14.8 lb-ft ±3.7 lb-ft) and with M6 screws (strength 12.9) with sleeve 15 Nm ±3 Nm (11 lb-ft ±
2,2 lb-ft).
Also, lay the sensor cables in such a way that no resonance vibrations can occur on the cable.
Otherwise, there is a risk of breakage.
The required mounting of the knocking sensors may vary depending on the engine type used.
The following locations are, in principle, possible for fitting the knocking sensors taking into
account the aforementioned specifications
–   On the engine block
    For mounting on the engine block use screws of the type M 8x30-8.8 (AL-engine block) or
    M 8x25-8.8 (CI-engine block).

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–    On the cylinder head screws
     Especially when it comes to engine conversions, it has proven to be worthwhile to attach the
     knocking sensors on cylinder head screws or -bolts.
     Drill an M6-hole with a maximum depth of 12 mm (0.47") in the cylinder head screw and fix
     the detonation sensor with a screw of type M 6x25-10.9 and an adapter sleeve to fill the
     hollow space

–    On the nuts of the cylinder head studs

Contact the engine manufacturer if you are not sure whether the cylinder head screw is suitable
for the installation.

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Mounting the blocking capacitor board for use in hazardous areas
A blocking capacitor board has four outputs. If all 20 possible knock sensor inputs are used with
a DetCon20, then five blocking capacitor boards are required.
One blocking capacitor board is used for each of the four knock sensors required.
1.   Plug the required blocking capacitor boards into the connectors (marked red in the figure)
     for the knock sensors on the DetCon20.
2. The wiring of the knock sensors has to be done as described above, with the difference that
   you now use the connector plug on the blocking capacitor board.

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5.4 Mounting the Ignition Sensor Unit (ISU)
The ignition sensor unit is mounted on a DIN rail on the engine in direct proximity to the ignition
coil of the first cylinder in the firing order, which is equipped with a detonation sensor or in the
vicinity of the ignition controller.
For information on wiring connections, please refer to section Wiring of the Ignition Sensor Unit
(ISU) on page 59.
For diesel and pilot injection engines, a camshaft sensor is used instead of an ignition sensor
unit (ISU). Refer to the section Mounting the Camshaft Sensor on page 55. No ignition sensor
unit is needed when using a MOTORTECH ignition sensor unit with ASO (e. g. MIC6) output
either. You can find information in the section Wiring for Ignition Controller with ASO Output on
page 58.

                  Mounting on the engine
                  The ignition sensor unit is fully sealed and therefore resistant to vibrations.
                  When mounting on the engine or in an environment in which vibrations
                  arise, only the connector must be secured e.g. by means of a cable tie.

                  Please note that the contacts of the connector are bare and must be
                  protected against moisture and contamination. If the engine should be in
                  such a location, the ignition sensor unit can be, for example, mounted in a
                  junction box or housed in a control cabinet.

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