Rockwell Automation 1790-TXXXX CompactBlock LDX I/O Profibus Analog, RTD and Thermocouple - Manual (Page 26)

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Publication 1790-IN010B-EN-P - April 2003
4-Channel Input RTD Base Block Specifications
1790P-T4R0
Inputs per module 4 channel, RTD/Resistance Input
Input Range 1-625
Sensors Supported Sensor Type Degree Counts Resolution
Resistance 100m Ω 1 to 625 Ω 10 to 6250 100mΩ
Resistance 10m Ω 1 to 327 Ω 100 to
32700
10m Ω
100ohm Pt/ α =0.00385 -200 to
+850°C -2000 to
+8500 0.1°C
200ohm Pt/ α =0.00385 -200 to
+850°C -2000 to
+8500 0.1°C
500ohm Pt/ α =0.00385 -200 to
+650°C -2000 to
+6500 0.1°C
100ohm Pt/ α =0.003916 -200 to
+640°C
-2000 to
+6400 0.1°C
200ohm Pt/ α =0.003916 -200 to
+640°C
-2000 to
+6400 0.1°C
500ohm Pt/ α =0.003916 -200 to
+640°C
-2000 to
+6400 0.1°C
100ohm Nickel -60 to
250°C -600 to
2500 0.1°C
120ohm Nickel -80 to
260°C -800 to
2600 0.1°C
200ohm Nickel -60 to
250°C -600 to
2500 0.1°C
500ohm Nickel -60 to
250°C -600 to
2500 0.1°C
Resolution 16 bits across 625ohms, 0.1°C/bit or 0.1°F/bit (RTD Sensors)
20bit Sigma-Delta modulation converter
Data Format 16 bit Integer (2’s compliment)
Module Scan Time 8ms/channel @ Notch Filter = 60Hz
Overall accuracy 0.2% Full scale @0°C-60°C
Settable Notch Filter 10Hz (default), 25Hz, 50Hz, 60Hz, 100Hz, 250Hz, 500Hz
Open Wire Detection Out of range, open wiring
Excitation Current 1mA
Input Impedance 5M ohm