Rockwell Automation 1790P-4R0 CompactBlock LDX I/O RTD/Resistance Input Module - Manual (Page 8)

Publication 1790-UM002A-EN-P
1-2 Overview
The module supports the following filter frequencies:
•
10 Hz
•
25 Hz
•
50 Hz
•
60 Hz
•
100 Hz
•
250 Hz
•
500 Hz
The module uses five input words for data and status bits. Module
configuration is stored in the module memory. Configuration for
1790D-(T)4R0 is done via RSNetWorx for DeviceNet™ programming
software. See Chapter 3, Module Data, Status, and Channel
Configuration, for details on module configuration. Configuration for
1790P-T4R0 is done via PROFIBUS configuration software. See Appendix
C for details.
RTD Compatibility
An RTD consists of a temperature-sensing element connected by two,
three, or four wires that provide input to the module. The following table
lists the RTD types that you can use with the module, including their
temperature range, effective resolution, and accuracy.
Table 1.1 RTD Specifications
RTD Type Temperature
Range Scaling
(Counts) Resolution* Accuracy**
(0 to 55°C)
100ohm Pt/
α
=0.00385 -200 to +850°C -2000 to +8500 0.1°C ±2.1°C
200ohm Pt/
α
=0.00385 -200 to +850°C -2000 to +8500 0.1°C ±2.1°C
500ohm Pt/
α
=0.00385 -200 to +650°C -2000 to +6500 0.1°C ±1.7°C
100ohm Pt/
α
=0.003916 -200 to +640°C -2000 to +6400 0.1°C ±1.68°C
200ohm Pt/
α
=0.003916 -200 to +640°C -2000 to +6400 0.1°C ±1.68°C
500ohm Pt/
α
=0.003916 -200 to +640°C -2000 to +6400 0.1°C ±1.68°C
100ohm Nickel -60 to 250°C -600 to 2500°C 0.1 °C ±0.62°C
120ohm Nickel -80 to 260°C -800 to 2600 0.1°C ±0.68°C
200ohm Nickel -60C to 250°C -600 to 2500 0.1°C ±1.62°C
500ohm Nickel -60 to 250°C -600 to 2500 0.1°C ±0.62°C
*Filter set for 10 Hz
3
**Module only