Description of I/O extension modules
105542_en_05 PHOENIX CONTACT 91 / 198
7.2 RAD-PT100-4-IFS - extension module with four
temperature inputs
The RAD-PT100-4-IFS analog I/O extension module has four Pt100 inputs for temperatures
from -50°C ... +250°C. Pt100 inputs T1 ... T4 can be mapped to analog outputs
I1/U1 ... I4/U4 of the RAD-AO4-IFS extension module. All inputs are electrically isolated
from one another, from the supply voltage, and from the remaining electronics.
Pt100 resistance temperature detectors can be connected to the RAD-PT100-4-IFS
I/O extension module. The temperature detectors change their resistance according to the
temperature. The RAD-PT100-4-IFS acquires the Pt100 input signals. The inputs signals
are mapped to proportional, analog voltage or current signals of the RAD-AO4-IFS output
module.
Example: at a temperature of -50°C at the Pt100 input, a current of 0 mA or a voltage of 0 V
is issued at the output module. At a temperature of 250°C at the Pt100 input, a current of
20 mA or a voltage of 10 V is issued at the output.
Table 7-3 Pt100 input
Pt100 input Analog output
-50°C 0 mA or 0 V
+250°C 20 mA or 10 V
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