Rockwell Automation 1790-XXXX CompactBlock LDX I/O DeviceNet RTD and Thermocouple - Manual (Page 20)

20
Publication 1790-IN011B-EN-P - April 2003
4-Channel Input RTD Base Module Specification s
1790D-4R0, 1790D-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
Specifications continured on next page.