Parker iqan-mc3, Руководство пользователя

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35
Reference voltage, VREF
7 I/O functionality
Instruction book, IQAN-MC3
Reference voltage, VREF
The IQAN-MC3 is internally equipped with voltage regulators to generate the
reference voltage
VREF . The standard 5V reference voltage will feed different kinds of
sensors. There is a VREF connection in both the C2 connector, and the C3 connector.
Having multiple VREF supplies allows you to distribute power to the sensors in the
vehicle according to installation zones or some other configuration.
VREF positions.
N
OTICE
It is strongly recommended to use the module’s -VREF and +VREF to all sensors and
potentiometers that are connected to the module inputs. This will reduce bad
measurement based on potential fault (i.e. different ground points for other supplies in
relation to the MC3 ground, -BAT).
Maximum load for the VREF supply, see Appendix A, on page 46
IQAN-MC3
+VREF
-VREF