1756-IF8I

Name: 1756-IF8I
Brand: ROCKWELL
SKU: 1756-IF8I

The Allen Bradley 1756-IF8I is an 8-point analog input module for ControlLogix systems, offering high-resolution 24-bit conversion and isolated channels. It supports both voltage and current signals, making it ideal for precise measurement applications in industrial automation.

Product Model1756-IF8I

Product ID108636

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Resolution ConversionThe 1756-IF8I boasts a superior 24-bit conversion resolution, ensuring precise measurements in various industrial applications.
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2. Isolated ChannelsEach of the 8 input channels is isolated, providing a safe and reliable connection to your system, reducing the risk of electrical interference or damage.
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3. Versatile Signal SupportThis module supports both voltage and current signals, allowing it to interface with a wide range of transmitters and sensors, making it highly versatile.
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4. Internal Loop PowerIn sourcing current mode, the channel provides loop power, simplifying the setup and reducing the need for external power sources.
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Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Input, current

True

Input, voltage

True

Input, resistor

False

Input, resistance thermometer

False

Input, thermocouple

False

Input signal, configurable

True

5. Enhanced Diagnostic CapabilitiesThe module includes overvoltage protection, data warnings, and process alerts, ensuring that any issues are quickly detected and addressed, minimizing downtime and improving overall system reliability.

Output, voltage

False

Output signal configurable

False

Analogue inputs configurable

True

Analogue outputs configurable

False

Type of electric connection

Screw-/spring clA connection

Channel bandwidth

Notch Filter configuration dependent

Module keying

Electronic, software configurable

Module error over full temperature range

0.1 %

Module conversion method

Sigma-Delta

Input range

-10...10V, 0â¦10V @ 0...5V, 0...20 mA

Data format

IEEE 32-bit floating point

Wire category

2 - on signal ports

Overvoltage protection

Â±30V DC maximum

Common mode noise rejection

120 dB @ 50/60 Hz

Normal mode noise rejection

80 dB @ 60 Hz

Module input scan time, min

1 ms

Voltage and current ratings

Backplane: 5.1V DC 200mA @ 24V DC 400 mA, Input voltage: -10V to +10V @ 0V to 10V @ 0V to 5V, Input current: 0 mA to 20 mA, Output current: 0 mA to 20 mA

Settling time

Notch Filter configuration dependent

Total backplane power

Voltage/Non-sourcing current mode: 4.6 W, Sourcing current mode: 10.6 W

Thermal dissipation

Voltage mode: 15.7 BTU/hr, Non-sourcing current mode: 17.4 BTU/hr, Sourcing current mode: 24.9 BTU/hr

Current draw

200mA @ 5.1V, Voltage/Non-sourcing current mode: 150mA @ 24V, Sourcing current mode: 400mA @ 24V (In sourcing current mode, the channel provides loop power.)

Inputs

Eight isolated channels - any combination of voltage or current mode

Power dissipation

Voltage mode: 4.6 W (15.7 BTU/hr), Non-sourcing current mode: 5.1 W (17.4 BTU/hr), Sourcing current mode: 7.3 W (24.9 BTU/hr)

Resolution

24 bit, Â±10.5V (1.49 Î¼V/count), 0...10.5V (1.49 Î¼V/count), 0...5.25V (1.49 Î¼V/count), 0...21 mA (2.99 nA/count)

Wire size

0.33...2.1 mm2 (22...14 AWG) solid or stranded shielded copper wire rated at 90 Â°C (194 Â°F), or greater, 1.2 mm (3/64 in.) insulation maximum

Calibrated accuracy

0.05% @ 25Â°C (77 Â°F)

Open circuit detection time

5 s

Suitable for safety functions

False

Onboard data alarming

True

Scaling to engineering units

True

Real-time channel sampling

True

Sourcing voltage, min

20V DC

Sourcing voltage, max

36V DC (open circuit)

Sourcing current, max

Current limited <45 mA (IN_x/I/SRC to RTN_x)

Surrounding air temperature, max

60 Â°C

North American temperature code

Emissions

IEC 61000-6-4

ESD immunity

6 kV contact discharges, 8 kV air discharges

EFT/B immunity

Â±4kV @ 5kHz on shielded signal ports

Relative humidity

5...95% noncondensing

Conducted RF immunity

10V rms with 1 kHz sine wave 80% AM from 150 kHz...80 MHz on shielded signal ports

Surge transient immunity

Â±2 kV line-earth (CM) on shielded signal ports

Operating temperature

0 to 60 Â°C

Radiated RF immunity

10 V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10 V/m with 200 Hz 50% pulse 100% AM @ 900 MHz, 10 V/m with 200 Hz 50% pulse 100% AM @ 1890 MHz, 3 V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz

Nonoperating temperature

-40 Â°C

RTB keying

User-defined mechanical

Vibration

2 G @ 10...500 Hz

Shock

Operating: 30 G, Non operating: 50 G

Slot width

1 None

Input impedance

Voltage mode: 1 G? approximately (powered), Voltage mode: 7500 ? approximately (unpowered), Current mode: 125 ? approximately

Isolation voltage

250V (continuous), reinforced insulation type, inputs to backplane, 250V (continuous), basic insulation type, input to input

IEC temperature code

Enclosure type rating

None (open-style)

Repairable

REPAIRABLE

Preferred Availability

true

Quick Turnaround

false

Dimension Height

5.588

Lead Time

Dimension Width

18.034

Dimension Length

23.622

Stock Status

STOCKED

Weight

0.365

Weight Unit