PLM Manual for pdf
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1. PLM Professional Lambda Meter User s Manual MoTeC PLM User s Manual 2 Contents Meter Operation sssssssssssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnna D Introduction Sensor Placement CONNECHONS tocada id tada Lambda ici A das ack od Engine Tuning Operating Tips Analogue Output rot Initial Configurar aora aan War MU COS ci dead PLM Setup Software ssssssssssssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn D Display Output Table Setup Wa iaa Analogue QuU plUt cani ai E Other Setup Features APPENdICOS iia LO Appendix A Lambda to Air Fuel Ratio Table ocoociccnincnninncnmmemnmsmrrn 10 Appendix B PLM Wiring Details 0 ee seseeeeseeseeeseseneeeeseeeetereeneeenerateeeeteeaeaeenes Appendix C Sensor Wiring Details cceceeeeeeeeseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeteteeeeeneeeeees Appendix D PLM Warm up Codes Appendix D PLM Warm up Codes Appendix E PLM Diagnostic Codes e ceeeeseeeeseeeeeeeeeeeeeeeeeeeeteneeeteeeteeeeeeeeeeeeees Appendix F Glossary icono tinas Copyright 2001 MoTeC Australia Pty Ltd The information in this document is subject to change without notice No responsibility will be taken for the consequences of any inaccuracies occurring in this manual 25 May 2001 MoTeC PLM User s Manual 3 Meter Operation Introduction The MoTeC Professional Lambda Meter measures Lambda or Air Fuel Ratio over a wide range of mixtures2. with fast response time The display may be set to Show Lambda Air Fuel Ratio for Petrol Alcohol Gas Diesel or blend fuel or equivalence ratio The PLM provides an Isolated Analogue Output Voltage proportional to Lambda that may be connected to an Analogue Meter or other measurement instrument such as a Data Logger or dynamometer The PLM also supports a CAN data link to devices such as the Motec Dash Logger for transmission of sensor and diagnostic data Sensor Placement The sensor should be fitted to the exhaust system and the sensor tip protrude into the exhaust gas flow When fitted it should be tilted at an angle of between 10 and 90 degrees to the horizontal ie with the tip of the sensor pointing down This is to ensure that no condensed water builds up between the sensor case and the sensor ceramic It is recommended that where possible the sensor be placed at least 1m from the exhaust ports to avoid excessive heat and at least 1m from the open end of the exhaust system to avoid incorrect readings due to outside oxygen This is however not mandatory and where necessary for shorter exhaust systems the sensor should be placed closer to the engine Connections The PLM has two D 9 pin connectors The loom supplied with the PLM is fitted to the male connector This is for connection to the sensor and to a power supply The 2 pin DTM connector is connected to a 12V DC power supply The Power supply must provide current for
3. 1 Bosch LSU NTK UEGO Automatic using sensor s built in calibration resistor Manual Table Entry Known Oxygen Environment Calibration Constant Manual or Automatic using sensor s built in calibration resistor M18 x 1 5 0 7 to 32 0 0 to 22 Fuel dependant see lambda range 1 5 sensor specific 1 Max 8 Amp Bosch Digital PID NTK Constant Voltage NTK sensor requires at least 11V for proper operation of heater 0 5V DC Max User Programmable Floating 4 5 to 5 0 volts 2 x User Programmable as RPM or PLM Enable Operate CAN up to 1Mbit RS232 LCD 3 5 Digit 12 7mm Green LED Back Light Motorola 68HC908AZ60 8MHz MoTeC Code Memory Configuration Memory Connection Connectors Environment Temperature Range Case Dimensions WxHxD Weight PLM User s Manual 60K Flash 1K EEPROM Field updateable 2 x 9 Pin Dsub commonly called D9 10 to 70 Deg C 105x41x25 mm Excluding Connector 135grams MoTeC PLM User s Manual 10 Appendices Appendix A Lambda to Air Fuel Ratio Table Air Fuel Ratio MoTeC PLM User s Manual 11 Appendix B PLM Wiring Details Sensor Connector Male D9 6 Batery OV Power ICH E sp Auxiliary Connector Female D9 fo eNom d Fs Analog ea gt o rogue cu Wore 6 Notel Extension of Standard Sensor Loom The length of the standard loom supplied for connection of the PLM to a sensor is 2 5m Longer looms are avail
4. able from MoTeC by request It is not recommended that the loom is extended by using a standard serial cable These are unable to supply the current required by the sensor If an extension is made the wire must be at least 20 gauge Note 2 If using a power supply other than the vehicle battery start up current for the sensor is up to 5A though operating current is much lower than this 0 5 1 Amps depending on exhaust gas temperature Note 3 For connection to an ADL wire to pin 74 or 76 Can be spliced into an existing wire Note 4 For connection to an ADL wire to pin 73 or 75 Can be spliced into an existing wire Note 5 Connect the Positive wire to the positive input on the measuring device Note 6 Connect the Negative wire to the OV reference point on the measuring device MoTeC PLM User s Manual Appendix C Sensor Wiring Details Bosch LSU Sensor Sensor Pin Colour PLM pin 1 Red lpr 2 Black Vs 3 Yellow Sensor Common 4 White Heater 5 Grey Heater 6 Ip NTK Uego Sensor Sensor Pin Colour PLM pin 1 Orange 2 Heater 2 Yellow 7 Heater 3 Re 4 Sensor Common 5 N C 6 Red Vs 7 White Ip 8 Black Sensor Common 12 4 rae 6 Ip 5 Heater 12 4 Heater 3 Sensor OV 2 Vs lpr Sensor Common Ip Vs N C Sensor Common Re Heater Heater MoTeC PLM User s Manual 13 Appendix D PLM Warm up Codes C 6 Sensor Protection Shutdown C5 Use
5. both the Meter and the Sensor Heater Element This can be up to 5 Amps at start up The vehicle battery is usually the most convenient source of power The PLM can be connected to a PC for configuration by using the second female D 9 connector This connector also has pins for the CAN data bus digital inputs and analogue voltage output See Appendix B for a description of the PLM pinout Lambda Lambda gives a measure of Air Fuel Ratio that is independent of the type of fuel being used Lambda 1 0 corresponds to the stoichiometric ratio i e when there is no excess fuel and no excess air Lambda gt 1 0 gt Excess Air Lean Lambda lt 1 0 gt Excess Fuel Rich Lambda may be directly converted to Air Fuel Ratio for a specific fuel using a multiplication factor The PLM will display Air Fuel Ratio by loading the appropriate configuration into one of the output tables This is described below in the section PLM Setup Software Output Table setup A table to convert Lambda to Air Fuel Ratio for various fuels is given in Appendix A Engine Tuning The desired Air Fuel Ratio or Lambda is dependant on the tuning objective i e Power Economy or Emissions Normally at Full Load the Engine is tuned for maximum power and at light loads the engine is tuned for emissions or economy The following table gives a guide to the required Lambda values for different tuning objectives MoTeC PLM User s Manual 4 Note The exact requirement
6. can be used in most cases If the calibration value of the sensor is known then it can be entered by selecting the second choice Enter calibration value This value is engraved on LSU sensors supplied by MoTeC The other two methods are for advanced users and will not generally need to be used Heater Control This allows the heater voltage to be set when using an NTK sensor Again this is an option for advanced users and should be left at 10 5 volts default value by most users Display This screen allows the user to set the parameters for the lambda meter display screen The display update rate and filtering values are independent of the real values used for CAN and analogue voltage outputs Output to display The user can choose the output to display from one of the two output tables Decimal Places Selectable from 0 to 3 Normal use would be to 2 decimal places for lambda Update Rate Displayed value will update from 1 to 10 times a second Filter Time The data can be filtered so that it is more stable and easier to read This is independent of the update rate MoTeC PLM User s Manual 7 Backlight Intensity User definable from 0 to 100 Output Table Setup The Output Tables are used by the PLM to calculate the displayed value The PLM stores two tables that can be configured with different calibrations for displaying lambda air fuel ratio or equivalence ratio In addition to a lambda calibration the
7. changes to the configuration The PLM need only be connected to a PC if the user wishes to change the display type the analogue output calibration or modify the configuration in some other way Warm up Codes Upon being powered up the PLM will display the current version of software for about one second It will then display a series of codes describing the warn up progress A description of these codes is given in Appendix D MoTeC PLM User s Manual 5 PLM Setup Software Introduction Computer Requirements The Personal Computer PC must be an IBM PC compatible running Windows95 98 ME NT4 or Windows2000 operating system Recommended Minimum specifications Pentium 90 16 MB RAM Serial Port The PLM connects to the PC with a standard serial communication cable This is also known as a straight though cable Installing PLM Setup Place the floppy disk in the A drive Click on the Windows Start button and select Run Type a setup exe Follow the setup program instructions To start the program after installation click on the Windows Start button and select Programs gt Motec gt PLM Setup gt PLM Setup 1 0 Mouse and Keyboard The PLM setup software may be operated using the keyboard or a mouse It is often easier and faster to use the keyboard on many Notebook laptop PC s Main Menu The main menu is used to access all of the functions of the PLM setup software Click the mouse on one of
8. onnecting to the PLM A PC can be connected to the PLM with a serial cable running directly from a PC serial port to the female D 9 connector on the PLM The serial port used can be selected from the Options Communications Port item from the main menu Sending and Retrieving Configurations The currently open configuration file can be sent to the PLM by selecting Online Send Configuration from the main menu When a configuration file is sent to the PLM any changes are automatically saved to the file The configuration can be retrieved from the PLM by selecting Online Get Configuration from the main menu Itis advisable to Get the initial configuration from the PLM and save this before making modifications Changing the Configuration Once an existing configuration file has been opened or a new one created the various parts of the configuration may be modified by choosing the appropriate items from the main menu The configuration setup items are accessed from the main menu item Setup Sensor Display Analogue Outputs Sensor Sensor Type The user can manually select the sensor used as Bosch LSU or NTK Uego Selecting Auto allows the PLM to determine the type of sensor being used Calibration Method There are several options available for choosing the calibration method of the sensor being used The default option for this is Use measured calibration value This allows the PLM to determine the sensor calibration and
9. r Stop C4 No Heater detected C 3 Warm Up C2 Control Initialization C 1 Checking Operation MoTeC PLM User s Manual 14 Appendix E PLM Diagnostic Codes These are the diagnostic error groups that are sent to the ADL via the CAN link Diagnostic Group 1 1 No Sensor 2 Sensor Hot 4 Sensor Cold 8 Sensor Faulty 16 Heater Drive Overload 32 Warm Up 64 Ref voltage out of range Diagnostic Group 2 These codes are the same as those displayed by the PLM 1 C 1 Checking Operation 2 C 2 Control Initialization 4 C 3 Warm Up 8 C 4 No heater detected 16 C 5 User Stop 32 C 6 Sensor Protection Shutdown MoTeC PLM User s Manual 15 Appendix F Glossary CAN Controller Area Network High speed serial data bus common in automotive applications Ip Sensor pump cell current Ipn Normalised Ip Vs Sense voltage
10. re are a number of pre defined calibrations for air fuel ratio for different fuels To display one of these the calibration must be loaded from the PC by clicking on the Load button and choosing the appropriate calibration from the list displayed Advanced users can generate their own calibration tables using the Ipn value measured by the meter These can be saved for re use Analogue Output The PLM is capable of generating an analogue voltage based on the measured lambda value This can be connected to another device such as an ECU data logger or dynamometer allowing it to read the measured lambda value The type of value to be generated can be selected from the drop down list This then appears in the Input column of the Calibration Table Calibration Table The calibration table allows users to set the voltage output that corresponds to the table input value The table takes the input value and translates it to an analogue voltage by way of the calibration table The output voltage can be in the range of 0 to 5 volts At least two pairs of values must be entered in the table so that a straight line may be derived between the two points The voltage is linearly interpolated between points in the table Once created tables can be saved and then used in other configurations Other Setup Features Digital Inputs The PLM has two digital inputs with two possible functions Input 1 can be used to read engine RPM and thi
11. s value is then transmitted on the CAN data stream The other function is to use an input to switch the unit on off The operate condition to enable the PLM can be based on either input This way the PLM can be set to operate only when measuring RPM or when a switch is set CAN Messages The PLM is pre configured to send CAN data to a MoTeC ADL See Appendix B for details of wiring the PLM to an ADL The data to be transmitted can be the value from either output table 1 or 2 Users should only change the Address or Compound ID when connecting to a CAN device other than the ADL Dash Manager Setup Under Inputs Communications click on one of the blank CAN inputs Then select template PLM 1 CAN ID 460 The channels available are then listed under Received Channels 1 Normalised sensor pump cell current MoTeC PLM User s Manual 8 Specifications Meter Power Supply Input Voltage Range 7 to 16Volts Input current Protection Load Dump Clamp Sensors Sensors Compatible Types Calibration Methods Type Detection Sensor Thread Measurements Lambda 02 AIF Ratio Accuracy Sensor Heater Outputs Current Control Output Analogue Output Type Common Mode Range Inputs Digital Communications Serial Display Type Digit Height Lighting Processor CPU Speed 60mA Typical backlight off 110mA Typical backlight on Plus sensor heater current Reverse polarity protected Max 40V at 100 Amp 100msec
12. s for a specific engine and fuel must be found by experimentation Note On Turbo Engines extra fuel may be desirable to reduce exhaust temperatures and help avoid knock Operating Tips If the Engine misfires for any reason including an over rich mixture the Meter may falsely read Lean This is due to excess air being present in the exhaust gasses which is caused by incomplete combustion when the engine misfires Engines with high overlap camshafts running at low speed may pump air through the engine resulting in a false lean reading therefore the meter may need to read leaner than would otherwise be expected Analogue Output The Analogue Output provides a voltage proportional to Lambda The default configuration is set for O 5 V to correspond to 0 5 to 1 5 Lambda This scaling can be changed by using the PLM Setup software Details are given in the section Configuration Analogue Output below For correct operation Aout MUST be connected to the ground reference on the monitoring system Initial Configuration The PLM is initially programmed with a configuration that will allow it to operate as a stand alone device It will automatically detect the sensor type and display the lambda reading This configuration will also transmit data to an ADL when the CAN bus pins are connected to the ADL as described in Appendix B The analogue output is initially configured with a 0 5 V output corresponding to 0 5 to 1 5 Lambda Making
13. the menu items or press the Alt key together with the underlined letter Eg press Alt S for the Setup menu When the PLM Setup software is started a configuration file needs to loaded before changes can be made This can be from a file on disk or from the PLM itself Configurations The PLM configuration determines exactly how it operates The initial configuration will display Lambda when the PLM is powered and connected to a sensor Changes can be made to the configuration to alter various aspects of the PLM This includes the display parameter eg to A F ratio modifying the scaling of the analogue output sensor type backlight intensity etc Standard configuration templates for most common preferences are included Configuration Files The configuration files are stored on the PC hard disk and can be modified before being sent to the PLM A new configuration can be created by selecting File New from the main menu After a configuration has been created or modified it should be saved with a meaningful name by selecting File Save from the main menu Opening an Existing File Before an existing configuration can be modified or sent to the PLM it must first be opened To open a configuration file select File Open from the main menu and select the desired file Note that the most recently used files appear at the bottom of the File menu which is often the easiest way to open a recently used file MoTeC PLM User s Manual 6 C
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