MoTeC PLM User Manual

Page 15

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MoTeC

PLM Setup Software

15

heater at a sustained voltage above 10.5 volts will reduce the sensor
lifetime.

Sensor Timeout:

The option to ignore sensor errors is only recommended for very
specialised applications where extreme changes in lambda may cause a
short loss of sensor control. Enabling this option will disable the default
PLM behaviour of shutting down the sensor for a timeout period when
control is lost. This timeout is to protect the sensor as loss of control can
indicate a wiring fault.

Setup | Display

Output Tables:

The Output Table Setup dialog is displayed when the Output Tables
button is clicked. 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, there are a number of pre-defined
calibrations for air fuel ratio for different fuels. To display one of these, the
calibration must be loaded 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
(normalised sensor pump cell current) value measured by the meter.
These user calibrations can be saved for re-use by clicking the ‘Save As’
button.

Output to Display:

The default PLM display value can be selected as the result from one of
the two tables that are specified under the Output Tables setup.

Display Decimals Table 1 / Table 2:

This is the number of decimals used to display the values from Table 1
and Table 2 in the Output Tables setup. The display decimals are
specified for both tables as the PLM can be configured to swap the
display between the two tables using a digital input.

Normal use would be to 2 decimal places for lambda.

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