38 GC250 Technical Manual
EAAM057608EN
5.7
The device is equipped with three inputs designed for the connection to resistive-type sensors
T.13, T.14, T.15
, and their common
T.12
.
In addition, two voltage analogue measure inputs are present, referring to GND:
T.09
in alternative to the use as D+ signal, it can be used as input for voltage analogue signals
0..32VDC; also see par. 5.5.1.
T.16
in alternative to the use as digital input, it can be used as input for voltage analogue
signals 0..10VDC; also see par. 5.8.2
5.7.1
T.13, T.14, T.15 - Resistive analogue inputs
The device is equipped with three inputs designed for the connection to resistive-type sensors
T.13
,
T.14
,
T.15
. There is also an input for the measurement of their common ground potential
T.12
.
The four values of the voltage measured on terminals, and their related value of sensors
resistance, are displayed on page S.07.
The inputs have a useful field of resistive measure between 0 and 1kohm with voltage to the
terminal
T.12
compared to GND equal to zero. It is by the way possible to measure values of
resistance up to 3kohm (always with voltage
T.12
=0V), but with a higher error of measure (see
the characteristics of care at par. 3)
The three inputs are between themselves electrically identical. Each input can be singularly
configured for the measure of the resistive signals; by default, the analogue measures are not
enabled.
ATTENTION!: we recommend in any case to observe the functions
provided for each single resistive input, according to the connection
diagram above, that is with:
T.13 Fuel level input (FL Fuel Level)
T.14 oil pressure input (OP Oil Pressure).
T.15 Coolant Temperature (CT Coolant Temperature)
