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1756-IF8I Allen-Bradley
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1756-IF8I Allen-Bradley

$1,859.48 - $3,600.00
$3,600.00
$1,859.48 - $3,600.00
$3,600.00
Surplus - Tested (With Warranty)
Need a Specific Revision?
$3,600.00
4 in stock
New / Open-Box Surplus
Need a Specific Revision?
$1,859.48
2 in stock
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Product Details

Description · Specifications · Product Overview

Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.

Product Overview

The 1756-IF8I is an Allen-Bradley ControlLogix analog input module featuring eight isolated channels configurable for voltage or current (including sourcing current). The module performs Sigma-Delta conversion and delivers IEEE 32-bit floating-point data. It installs into a ControlLogix chassis to interface sensor outputs with a programmable controller for process monitoring or feedback control applications in industrial automation systems. The 1756-IF8I supports -10…10 V, 0…10 V, 0…5 V, and 0…20 mA input ranges.

Best Suited For

  • Distributed analog sensing in ControlLogix racks
  • Mixed voltage and current input configurations
  • Loop-powered sensor applications via sourcing current
  • Process variable monitoring in OEM panels
Channels
8 isolated
Input ranges
-10…10 V, 0…10 V, 0…5 V, 0…20 mA
Resolution
24-bit
Backplane power
4.6 W (non-sourcing)/10.6 W (sourcing)

Technical Specifications

I/O & Electrical

Input ranges
-10…10 V, 0…10 V, 0…5 V, 0…20 mA
Input impedance
Voltage mode: ~1 GΩ (powered), ~7.5 kΩ (unpowered); Current mode: ~125 Ω
Overvoltage protection
±30 V DC maximum
Resolution
24-bit; ±10.5 V (1.49 µV/count), 0…10.5 V (1.49 µV/count), 0…5.25 V (1.49 µV/count), 0…21 mA (2.99 nA/count)
Calibrated accuracy
0.05 % @ 25 °C
Scan time
≥ 1 ms (module input scan time, min)
Common-mode noise rejection
120 dB @ 50/60 Hz
Normal-mode noise rejection
80 dB @ 60 Hz

Communication & Power

Backplane current draw
200 mA @ 5.1 V; 150 mA @ 24 V (non-sourcing), 400 mA @ 24 V (sourcing)
Total backplane power
4.6 W (non-sourcing)/10.6 W (sourcing)
Power dissipation
4.6 W (voltage), 5.1 W (non-sourcing current), 7.3 W (sourcing current)
Thermal dissipation
15.7 BTU/hr (voltage), 17.4 BTU/hr (non-sourcing), 24.9 BTU/hr (sourcing)
Sourcing voltage range
20 V DC (min) to 36 V DC (open-circuit)
Max sourcing current
< 45 mA (IN_x/I/SRC to RTN_x)

Physical & Environmental

Operating temperature
0 to 60 °C
Non-operating temperature
-40 °C
Relative humidity
5…95 % non-condensing
Vibration (operating)
2 G @ 10…500 Hz
Shock
30 G (operating), 50 G (non-operating)
Enclosure type
Open-style (no enclosure rating)
Wire size
0.33…2.1 mm² (22…14 AWG) shielded copper; insulation max 1.2 mm

Certifications

China CCCAustralian RCMKorean KCATEXIECExABSEEC

Certified (as of May 19, 2026) under China CCC, Australian RCM, Korean KC, ATEX, IECEx, American Bureau of Shipping, Eurasian Economic Community.

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Rockwell Automation documentation

Access official manuals, datasheets, and lifecycle information for this part directly from Rockwell Automation.

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Must Read: Disclaimer

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