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LCU-One CAN + Analog

AiM LCU-One CAN + Analog User Manual ver 1.05

LCU-ONE CAN + Analog
User Manual
LCU ONE-CAN+Analog
User manual Release 1.05
INDEX
1 – LCU-ONE CAN + Analog description ..................................................................... 2
2 – LCU-ONE mounting ................................................................................................. 3
3 – LCU-ONE power ....................................................................................................... 3
4 – Lambda probe mounting ......................................................................................... 4
5 – LCU-ONE connection .............................................................................................. 5
5.1 – Analog Connection ....................................................................................................................... 5
5.2 – CAN Connection ............................................................................................................................ 6
6 – LCU-ONE Configuration .......................................................................................... 8
6.1 – LCU-ONE standard analogue configuration............................................................................... 8
6.2 – LCU-ONE Analog custom configuration ................................................................................... 11
6.2.1 – Preliminary operation ............................................................................................................. 12
6.2.2 – Lambda controller Configuration ........................................................................................... 12
6.2.3 – The keyboard ......................................................................................................................... 15
6.2.4 – Informative panels ................................................................................................................. 16
6.2.5 – The analog output graph ........................................................................................................ 17
6.2.6 – Online values from Lambda controller. .................................................................................. 18
6.3 – LCU-ONE CAN configuration ..................................................................................................... 19
7 – Data visualisation on MXL/EVO3 .......................................................................... 25
7.1 – Data visualisation on MXL ......................................................................................................... 25
7.2 – Data visualisation on EVO3 ....................................................................................................... 25
8 – Data analysis with Race Studio Analysis ............................................................ 26
Appendix – Part numbers and technical drawings ................................................... 27
“A” – Part number of LCU-ONE CAN+Analog complete kit ............................................................. 27
“B” – Spare parts ................................................................................................................................. 27
“C” – Technical drawings .................................................................................................................... 28
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LCU ONE-CAN+Analog
User manual Release 1.05
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1 – LCU-ONE CAN + Analog description
LCU-ONE CAN+Analog (from here onward LCU-ONE) is a lambda controller for wide
band BOSCH LSU 4.9 lambda probe. It fits petrol and diesel engines as well as alcohol based fuel engines. It is intended to check lambda probe proper working as well as to transmit Air/Fuel Ratio values or Lambda values both through the CAN bus or through a serial RS232 bus.
Lambda value is defined as the ratio between instant AFR and Stoichiometric AFR, to say:
LAMBDA = (A/F)/(A/F) Stoichiometric
where:
A = incoming part of air; F = parts of petrol the carburetor injects into the engine; A Stoichiometric / F Stoichiometric = parts of air needed to burn Stoichiometric F;
For gasoline i.e. it needs 14,57 parts of air to completely burn a part of gasoline, obtaining Lambda value=1 read by the probe.
LCU-ONE controller can detect lambda values in a range of 0.65 to 1.6 (free air). It is reminded that a lambda value lower than 1 means a rich mixture while a
lambda value higher than 1 means a lean mixture.
Wide band Lambda probe needs to be heated to work properly and not being poisoned
with exhausted gas; LCU-ONE precisely manages the probe heater so to keep
temperature values in the optimum working range.
If using the CAN bus, LCU-ONE supplies information about the probe temperature and
a diagnostic highlighting improper functioning situations of the same probe (probe not connected, GND short circuit, power short circuit).
Lambda value is supplied through a 0-5 Volts analog output configurable through
Lambda Configurator, the software properly developed by AIM to configure its analog
controllers.
On the other hand Lambda/AFR value, as well as probe temperature and diagnostics, comes through the CAN bus.
Lambda probe used with LCU-ONE becomes very hot (around 700-800 °C, 1291­1472 °F); it is thereby necessary AVOIDING:
touching it placing it in contact with flammable stuff or fuel.
Warning:
disrespect of those precautions, can cause shocks, burnings or explosions.
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LCU ONE-CAN+Analog
User manual Release 1.05
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2 – LCU-ONE mounting
Install LCU-ONE in a flat location and far from heat sources. Install it steady using the
lateral fixing holes.
Arrange the wiring in the engine compartment or in the cockpit paying attention not to let them pass close to heat sources.
If using the CAN bus, remember that CAN cable needs to be terminated with an appropriate resistance. This is why the kit includes the terminator inserted in the Deutsch connector plug.
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3 – LCU-ONE power
To work properly, LCU-ONE needs an external power (between 10 and 15 volts).
It manages the probe heater, that needs 15-20 watt power.
Ensure that LCU-ONE is powered by the vehicle master switch so to avoid it absorbing power from the battery when the engine is off.
To power LCU-ONE follow this scheme: GND cable (black): connect it to vehicle GND (battery negative pole suggested). power cable (red): connect it to an external 12 volt power source through the vehicle master switch and protected with an (at least) 5 ampere fuse.
In case power cable needs to be extended, use cables whose section is at least 1,34 mm².
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LCU ONE-CAN+Analog
User manual Release 1.05
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4 – Lambda probe mounting
Install LCU-ONE in a flat location and far from heat sources; install it steady using the
supplied bracket. Arrange the wiring so to avoid it passing close to heat sources.
BOSCH LSU 4.9 Lambda probe is to be installed on the vehicle exhaust pipe using a specific adaptor supplied with the kit and is to be welded on the same pipe. The probe should be sufficiently near to the engine.
Probe working temperature should not exceed 900°C (1652°F) and the same probe should not be exposed to the free flame coming from the exhaust system.
Probe installation angle should be of at least 10° to avoid liquid stuff to come in contact with the probe, polluting it.
Once the probe is installed, pay attention not to let the cable pass near to excessively heated sources (the exhaust pipe for example).
Bosch LSU 4.9 probe auto-calibrates (no calibration is thereby required to the user).
Do not use solvents or additives to clean the probe connector. It is suggested to remove the probe when cleaning the vehicle so to avoid polluting it with detergents.
Never switch the vehicle on with Lambda probe installed and not connected to a
correctly working LCU-ONE controller: a probe not heated and exposed to exhaust gas
would be irremediably damaged.
N.B. BOSCH LSU 4.9 Lambda probe has been designed and developed to be
used with unleaded or diesel engine. It can be used with other kind of engines
too but its duration needs to be verified by the user with specific tests.
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5 – LCU-ONE connection
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5.1 – Analog Connection
LCU ONE-CAN+Analog
User manual Release 1.05
Refer to the image above to make an LCU-ONE analog connection. Extensions labelled as “3” and “4” are to be used to interface LCU-ONE with AIM
loggers, while extension labelled as “5” is to be used for serial programming.
Refer to this tutorial appendix for items part numbers and connectors pinout.
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5.2 – CAN Connection
LCU ONE-CAN+Analog
User manual Release 1.05
In case of a CAN connection with only one LCU-ONE, follow the scheme shown above.
Use extensions labelled as “1” and “2” to make CAN connections with AIM loggers that support it. It is reminded to use the proper cap indicated in the figure above (“CAN termination”) to terminate CAN line.
It is suggested to insert a 5 A fuse for each controller in series between external battery
and LCU-ONE to protect the system.
Refer to this tutorial appendix to know items part number and connectors pinout.
LCU-ONE, like the logger, needs to be powered by the vehicle master switch. As far as the connections with the loggers are concerned refer to each logger
user manuals.
Warning: connect LCU-ONE to AIM loggers OFF
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LCU ONE-CAN+Analog
User manual Release 1.05
In case of more than one LCU-ONE, the scheme to be followed is the one indicated
above. It is suggested to insert a 10 A fuse for each controller in series between the external battery and Lambda controller to protect the system. It is recommended to use the proper cap indicated in the previous figure (“CAN termination”) to terminate the CAN line.
Refer to this tutorial appendix to know each item part number.
LCU-ONE, like the logger, needs to be powered by the vehicle master switch.
As far as connections with the loggers are concerned, refer to the related user manuals.
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LCU ONE-CAN+Analog
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6 – LCU-ONE Configuration
To work properly LCU-ONE needs to be configured for both the CAN part and the analog part. In case Race Studio 2 software is available it is possible to use it to completely configure LCU-ONE. In case the only analog configuration is needed, follow
this instruction.
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6.1 – LCU-ONE standard analogue configuration
LCU-ONE analogue part can be configured both through Race Studio Configuration
software and using the dedicated Lambda configurator software. Configuration through Race Studio Configuration (standard configuration) is only
possible if calibration curve points 1.95=0.65 e 4.8=1.6 have not been modified. To use Race Studio Configurazione follow this procedure:
run the software; press “AIM system manager” button on the left vertical keyboard;
select the logger LCU-ONE is connected to;
activate channels layer; select the analogue channel to set the probe on; double click on type of sensor column corresponding to that channel and select “AIM Lambda LCU-ONE (0.65 – 1.6 Lambda)”, as shown here below and click out of the cell to confirm the choice.
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LCU ONE-CAN+Analog
User manual Release 1.05
Set the probe configuration panel that appears bottom on the left of channel layer, highlighted in the figure here below.
Activate the drop down menu pressing the button green circled in the figure here above and select the type of fuel used by the vehicle.
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LCU ONE-CAN+Analog
User manual Release 1.05
In case the used fuel is not included in the database (and only in case its
Stoichiometric value is known) press “Add custom value” button and the window here
below appears.
Fill in the new value and its legend. Press “Add new item to” button and then “Save” button. The fuel is now available in the drop down menu: select it.
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