Rockwell Automation Publication 1766-UM001O-EN-P - September 2021 145
Appendix A Specifications
Input Specifications – 1762-IF2OF2, 1762-IF4, 1762-IR4, 1762- IT4
Specification 1762-IF2OF2 1762-IF4 1762-IR4 1762-IT4
Number of inputs 2 differential (unipolar) 4 differential (bipolar) 4 4 input channels plus 1 CJC sensor
Update time (typical) 2.5 ms
130, 250, 290, 450, 530 ms
(selectable)
Input filter and configuration
dependent
NA
A/D converter type Successive approximation Successive approximation Delta-Sigma Delta-Sigma
Common mode voltage range
(1)
±27V ±27V NA ±10V
Common mode rejection
(2)
> 55 dB at 50 and 60 Hz > 55 dB at 50 and 60 Hz
>110 dB at 50 Hz (with 10 or 50 Hz
filter)
>110 dB at 60 Hz (with 10 or 60 Hz
filter)
>110 dB at 50 Hz (with 10 or 50 Hz
filter)
>110 dB at 60 Hz (with 10 or 60 Hz
filter)
Non-linearity (in percent full scale)
±0.12%
(3)
±0.12%
(2)
±0.05% NA
Typical overall accuracy
(4)
±0.55% full scale at -20…65 °C
(2)
±0.3% full scale at 25 °C
±0.32% full scale at -20…65 °C
(2)
±0.24% full scale at 25 °C
±0.5 °C (F °) for Pt 385 NA
Input impedance
Voltage Terminal: 200 KΩ
Current Terminal: 250 Ω
Voltage Terminal: 200 KΩ
Current Terminal: 275 Ω
>10 ΜΩ >10 ΜΩ
Current input protection ±32 mA ±32 mA NA NA
Voltage input protection ±30V ±30V NA NA
Channel diagnostics
Over or under range or open
circuit condition by bit reporting
for analog inputs.
Over or under range or open
circuit condition by bit reporting
for analog inputs.
Over or under range or open
circuit condition by bit reporting
for analog inputs.
Over or under range or open
circuit condition by bit reporting
for analog inputs.
(1) For proper operation, both the plus and minus input terminals must be within ±27V (±10V for 1762-IT4) of analog common.
(2) V
cm
= 1 V
pk-pk
AC
(3) Only applicable for Series B and Series C I/O modules.
(4) V
cm
= 0 (includes offset, gain, non-linearity and repeatability error terms)
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 [Auto-calibration 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 [Auto-calibration 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 Ω/°C (0.130 Ω/°F) for 3,000 Ω range
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