PiXtend V2 -L- Hardware Manual
6.5.1.Analog Inputs
PiXtend V2 -L- has four analog inputs for voltage measurements (AI0 - AI3) in the ranges
0..5 V / 0..10 V and another two for current measurements (AI4 - AI5) in the range
0(4)..20 mA.
Applications
–
Read out industrial sensors with analog outputs
–
Detecting potentiometer positions (rotary control)
–
Current and voltage measurements in the laboratory and in experimental setups
–
Voltage monitoring of batteries (for example, in a robot)
–
Current measurement with an external shunt (voltage at the resistor)
–
Read out of PT100/1000 sensors (with external pre-amplifier)
–
Connect to the analog outputs of other control units
The inputs are robust and can withstand overvoltages of up to 30 V DC. The voltage
ranges can be easily modified and adapted to the conditions by means of jumpers.
The analog channels correspond to the standard for programmable logic controllers (IEC
61131-2) and are therefore suitable for a large number of professional sensors and
measuring devices.
Analog filter stages ensure low-noise measurements with the 10-bit analog-to-digital
converter.
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Figure 70: Terminal block - analog inputs
