ES415.1 - User’s Guide 25
ETAS Hardware Description
4.3.7 Sensor Supply
Every sensor that can be switched to the ES415.1 has an individual sensor supply
voltage which can be set separately.
The cable connected to the sensor port of the ES415.1 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.
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 appli-
cation program, select one of the defined values between +5 V and +15 V or
enter or define any value within the value range.
Behavior for Rapid Prototyping Applications
The already existing sensor voltage is briefly interrupted at the start of the Rapid
Prototyping model on the ES910.3.
Electrical Isolation
The ground of the sensor supply voltage channels is connected with the ground
of the operating voltage of the module and protected with a fuse.
Overvoltage Protection
Each sensor supply output is protected against overvoltages. Exceeding the max-
imum value trips a fuse.
Fuses
If a sensor supply output (ground) is connected with the supply voltage (positive)
of the module, it trips a fuse.
Defective fuses cannot be replaced by the user. Please return defective modules
to ETAS. Notes about the process are available from the local ETAS sales and
service offices. The contact information is located in the chapter "ETAS Contact
Addresses" on page 108.
Overload
Upon exceeding the maximum output of a channel, the output voltage of this
channel is reduced.
Short-circuit Detection
In case of a short circuit of a sensor supply output (positive) to ground, the sensor
power supply automatically switches off this channel.
Information in the Application Program
In case of short circuits and tripped fuse, the application program receives ana-
lyzable channel-specific information.
The supply voltages of the sensors are not galvanically isolated towards the
operating voltage of the module.
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