Allen-Bradley MicroLogix 1400 - Page 184

170 Rockwell Automation Publication 1766-UM001I-EN-P - June 2015
Appendix A Specifications
Input Specifications 1762-IR4
Specification 1762-IR4
Input types
·100 Ω Platinum 385
·200 Ω Platinum 385
·500 Ω Platinum 385
·1,000 Ω Platinum 385
·100 Ω Platinum 3916
·200 Ω Platinum 3916
·500 Ω Platinum 3916
·1,000 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...1,000 Ω
·0...3,000 Ω
Heat dissipation 1.5 Total Watts (The Watts per point, plus the minimum Watts, with all points enabled.)
Normal mode rejection ratio 70 dB minimum at 50 Hz with the 10 or 50 Hz filter selected
70 dB minimum at 60 Hz with the 10 or 60 Hz filter selected
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 150 Ω range
±0.5 Ω for 500 Ω range
±1.0 Ω for 1,000 Ω range
±1.5 Ω for 3,000 Ω range
Typical accuracy [Autocalibration enabled] at
0…55 ° C (32…131 °F)
(1)
±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 1,000 Ω range
±2.5 Ω for 3,000 Ω range
Accuracy drift at 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 (0.012 Ω/°F) for 150 Ω range
±0.023 Ω/°C (0.041 Ω/°F) for 500 Ω range
±0.043 Ω/°C (0.077 Ω/°F) for 1,000 Ω range
±0.07 2Ω/°C (0.130 Ω/°F) for 3,000 Ω range
Excitation current source 0.5 mA and 1.0 mA selectable per channel
Open-circuit detection time
(2)
6…1212 ms
Input channel configuration Via configuration software screen or the user program (by writing a unique bit pattern into the module’s
configuration file). Refer to your controller’s user manual to determine if user program configuration is
supported.
Calibration The module performs autocalibration on channel enable and on a configuration change between
channels. You can also program the module to calibrate every five minutes.