Rockwell Automation 1762-IR4 RTD/Resistance Input Module - Manual (Page 20)

20 MicroLogix 1200 RTD/Resistance Input Module
Publication 1762-IN014B-EN-P - July 2013
Input Specifications
Specification 1762-IR4
Input Types 100 Ω Platinum 385
200 Ω Platinum 385
500 Ω Platinum 385
1000 Ω Platinum 385
100 Ω Platinum 3916
200 Ω Platinum 3916
500 Ω Platinum 3916
1000 Ω Platinum 3916
10 Ω Copper 426
120 Ω Nickel 672
120 Ω Nickel 618
604 Ω Nickel-Iron 518
0…150 Ω
0…500 Ω
0…1000 Ω
0…3000 Ω
Converter Type Sigma-Delta
Resolution Input filter and configuration dependent.
Refer to the MicroLogix 1200 RTD/Resistance Input Module User
Manual, publication number
1762-UM003 , for more information.
Common Mode Rejection 110 dB minimum @ 50 Hz with the 10 or 50 Hz filter selected
110 dB minimum @ 60 Hz with the 10 or 60 Hz filter selected
Normal Mode Rejection Ratio 70 dB minimum @ 50 Hz with the 10 or 50 Hz filter selected
70 dB minimum @ 60 Hz with the 10 or 60 Hz filter selected
Non-linearity (in percent full-scale) ±0.05 %
Typical Accuracy
[Autocalibration Enabled] at 25 °C
(77 °F) Ambient with Module
Operating Temperature at 25 °C
(77 °F)
(1)
±0.5 °C (°F) for Pt 385
±0.4 °C (°F) for Pt 3916
±0.2 °C (°F) for Ni
±0.3 °C (°F) for NiFe
±0.6 °C (°F) for Cu ±0.15 Ω for 150Ω range
±0.5 Ω for 500Ω range
±1.0 Ω for 1000Ω range
±1.5 Ω for 3000Ω range
(1) Accuracy is dependent upon the Analog/Digital converter filter rate selection, excitation current selection, data format, and
input noise.
Specification 1762-IR4
Typical Accuracy
[Autocalibration
Enabled] @ 0…55 °C
(32…131 °F)
±0.9 °C (°F) for Pt 385
±0.8 °C (°F) for Pt 3916
±0.4 °C (°F) for Ni
±0.5 °C (°F) for NiFe
±1.1 °C (°F) for Cu ±0.25 Ω for 150 Ω range
±0.8 Ω for 500 Ω range
±1.5 Ω for 1000 Ω range
±2.5 Ω for 3000 Ω range
Accuracy Drift @
0…55 °C (32…131°F) ±0.026 °C/°C (0.026 °F/°F) for Pt 385
±0.023 °C/°C (0.023 °F/°F) for Pt 3916
±0.012 °C/°C (0.012 °F/°F) for Ni
±0.015 °C/°C (0.015 °F/°F) for NiFe
±0.032 °C/°C (0.032 °F/°F) for Cu ±0.007 Ω/°C (0.012Ω/°F) for 150Ω range
±0.023 Ω/°C (0.041Ω/°F) for 500Ω range
±0.043 Ω/°C (0.077Ω/°F) for 1000Ω range
±0.072 Ω/°C (0.130Ω/°F) for 3000Ω range
Repeatability (1) ±0.1 °C (±0.18 °F) for Ni and NiFe
±0.2 °C (±0.36 °F) for other RTD inputs
±0.04 Ω for 150Ω resistances
±0.2 Ω for other resistances
Excitation Current Source 0.5 mA and 1.0 mA selectable per channel
Open-Circuit Detection
Time
(2)
6…1212 ms
Channel Update Time Input filter and configuration dependent. Refer to the MicroLogix 1200
RTD/Resistance Input Module User Manual, publication number
1762-UM003 , for
more information.