Motec LTCN User Manual

MoTeC LTC User Manual Contents Introduction ... 2 Installation ...

10 Configuration • Click OK. The configuration updates will be sent to the LTC, this may take several seconds LTC-N Unit Setup • To open the LTC

MoTeC Configuration 11 Note: Lambda sensors should not be left in the exhaust system of a running engine if they are not being controlled. A disa

12 Configuration When the Edit button is clicked under Output Table a table of Normalized Current appears. The standard Lambda values appear in the

MoTeC Configuration 13 address is hex 460, the slave devices must use CAN addresses in the range hex 461 to 46F. The Collect column on the main LT

14 Configuration Contaminated air will result in an incorrect calibration or a failure to calibrate. Wind should also be avoided as it can affect t

MoTeC Configuration 15 Calibrate the LTC-N Unit • Click Calibrate… to open the Gain Calibration window • Select one of t

16 Configuration Firmware Each version of the LTC Manager software includes a matching firmware version that must be sent to the LTC in order to ope

MoTeC Operation 17 Operation Monitoring LTCs The main LTC Manager window shows live readings, diagnostics and LTC state information for all connec

18 Operation • Choose a predefined stoichiometric AFR for one of various fuels OR Define a custom AFR by entering a stoichiometric point between 1.

MoTeC Operation 19 Diagnostics The Diagnostics column shows faults and diagnostic information for all connected LTCs. Diagnostic Description Hea

2 Introduction Introduction MoTeC LTCs (Lambda to CAN) monitor and control Wideband Lambda sensors and transmit Lambda readings and diagnostics on a

20 Operation Any LTC unit configured with a CAN address within the 15 CAN addresses following a Collect Master address will be shown as Slave (x). T

MoTeC Operation 21 • Click on an unused CAN row in the Communication Sections • Click Select button and choose a template o Select the matching

22 Operation o Enter 1 - PLM Receive for CAN 6 Data o Enter the LTC CAN address in decimal* for CAN 6 address. The address must match the CAN addr

MoTeC Operation 23 Example 2: LTC1 to LTC4 readings assigned to Lambda Cyl channels Assign Lambda measurements to a M84 channel For an M84 the Lam

24 Operation Lambda and Air Fuel Ratio Lambda gives a measure of the Air to Fuel Ratio (AFR) that is independent of the type of fuel being used. La

MoTeC Operation 25 Lambda Sensor Sensor Warm-up The internal heater in the Lambda sensor is powerful enough to allow accurate measurement when gas

26 Operation LTC Operating Tips If the engine misfires for any reason, including an over-rich mixture, the LTC may falsely read Lean. This is due to

MoTeC Appendices 27 Appendices Appendix A – Specifications Sensor Type • Bosch LSU 4.9 Lambda sensor (LTC4.9) • NTK LZA09 Lambda Sensor Power Su

28 Appendices Appendix B – Pinout Bosch LSU version (LTC 4.9) LTC Connector A LTCD Connector A and B Bosch LSU 4.9 sensor connector Mating connecto

MoTeC Appendices 29 NTK version (LTC-N) LTC-N Connector A NTK sensor connector Mating connector: supplied on sensor Pin No Wire Colour Descripti

MoTeC Introduction 3 Accessories • #57006 Bosch LSU 4.9 Lambda Sensor • #57007 NTK Lambda Sensor • #61059 MoTeC UTC - USB to CAN, used to commun

30 Appendices Appendix C – Dimensions

MoTeC Appendices 31

32 Appendices

MoTeC Appendices 33 Appendix D – Wiring Details To connect a single LTC unit, the Power/CAN Connector pins should be wired according to the followi

34 Appendices General CAN Bus Wiring Requirements The CAN bus should consist of a twisted pair trunk with 100R terminating resistors at each end.

MoTeC Appendices 35 CAN-LO CAN-HI 100R 100R CAN-LO CAN-HI CAN Device 500mm Max CAN-LO CAN-HI CAN Connector 500mm Max<< CAN Bus >> 5

36 Appendices Appendix E – LTC CAN Messages Messages 1 and 2 are transmitted by all LTC units. Messages 5 to 10 are only transmitted from an LTC un

MoTeC Appendices 37 Message 3 Byte Name Scaling 0 Compound ID = 2 N/A 1 Firmware Version Letter A B C 0 1 2 2:3 Firmware Version Number e.g.

38 Appendices 1 Reserved N/A 2:3 LTC10 Lambda Hi:Lo = x.xxxLa 4:5 LTC11 Lambda Hi:Lo = x.xxxLa 6:7 LTC12 Lambda Hi:Lo = x.xxxLa Message 9 By

MoTeC Appendices 39 Appendix F – Lambda to Air Fuel Ratio Table Lambda Air Fuel Ratio Petrol Alcohol LPG Diesel 0.70 10.3 4.5 10.9 10.2

4 Installation Installation LTC Installation The LTC can be mounted to a flat surface using the two mounting holes. The LTC should be mounted as far

MoTeC Installation 5 • Place the sensor at least 1 meter from the open end of the exhaust system to avoid incorrect readings due to outside oxygen

6 Installation LTC Manager Software Installation The LTC Manager software is required for configuration and calibration of LTC units. The software m

MoTeC Installation 7 Install LTC Manager Software • Go to the MoTeC website at www.motec.com and navigate to downloads > software > latest r

8 Configuration Configuration Introduction Note: LTC units come pre-configured to suit a single LTC or LTCD unit installation using the initial fact

MoTeC Configuration 9 LTC Unit Setup • To open the LTC Setup window, double click the row in the table containing the LTC or click the row and cli