Publication 1762-UM001D-EN-P - March 2004
Specifications A-15
Table A.21 Input Specifications 1762-IR4
Specification 1762-IR4
Input Types • 100Ω Platinum 385
• 200Ω Platinum 385
• 500Ω Platinum 385
• 1000Ω Platinum 385
• 100Ω Platinum 3916
• 200Ω Platinum 3916
• 500Ω Platinum 3916
• 1000Ω Platinum 3916
• 10Ω Copper 426
• 120Ω Nickel 672
• 120Ω Nickel 618
• 604Ω Nickel-Iron 518
• 0 to 150Ω
• 0 to 500Ω
• 0 to 1000Ω
• 0 to 3000Ω
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
±0.15Ω for 150Ω range
±0.5Ω for 500Ω range
±1.0Ω for 1000Ω range
±1.5Ω for 3000Ω range
Typical Accuracy [Autocalibration
Enabled] at 0 to 55° C (+32 to +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
±0.25Ω for 150Ω range
±0.8Ω for 500Ω range
±1.5Ω for 1000Ω range
±2.5Ω for 3000Ω range
Accuracy Drift at 0 to 55° C (+32 to
+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
±0.007Ω/°C (0.012Ω/°F) for 150Ω range
±0.023Ω/°C (0.041Ω/°F) for 500Ω range
±0.043Ω/°C (0.077Ω/°F) for 1000Ω range
±0.072Ω/°C (0.130Ω/°F) for 3000Ω range
Excitation Current Source 0.5 mA and 1.0 mA selectable per channel
Open-Circuit Detection Time
(2)
6 to 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.
Maximum Overload at Input Terminals ±35V dc continuous
Cable Impedance Max. 25Ω ( Operating with >25Ω will reduce accuracy.)
Power Supply Distance Rating 6 (The module may not be more than 6 modules away from the system power supply.)
Channel to Channel Isolation ±10V dc
(1) Accuracy is dependent upon the Analog/Digital converter filter rate selection, excitation current selection, data format, and input noise.
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