ETAS
Hardware Description
ES413.1 - User’s Guide
24
4.3.4
Sensor Supply
Every sensor that can be switched to the ES413.1 has an individual sensor sup
-
ply voltage which can be set separately.
The integrated integrated sensor connection cable transfers both the sensor
supply voltage and the sensor output voltage for the sensor. Additional cables
or an additional external power supply for the sensor supply voltage are not
required.
Fig. 4
-
5
Sensor Supply for a Sensor Channel
The sensor supply voltage is generated from the module operating voltage in
every sensor channel. The sensor supply voltage can be modified in steps. The
user can switch off the sensor supply voltage of each sensor channel in the
application program or select one of the defined values b5 V and
+15 V.
With a short-circuit of the sensor supply output against ground, the sensor
power supply of this channel is automatically switched off. Every sensor supply
output is protected against overvoltage. A fuse blows if the maximum value is
exceeded. When a short-circuit occurs and a fuse blows, the application pro
-
gram receives channel-specific information which can be evaluated.
TIP
The supply voltages of the sensors are not galvanically isolated from the
operating voltage of the module.
Fuse Blown1
Of f , 5 … +15 V
Adjust able
Power
Supply
D/A
Convert er
Sense-GND
DAC
3.3 V
/FUSECH1