Allen-Bradley 1756-IF16

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1756-IF16

Type

Analog input module

Application

I/O module

Used with

ControlLogix 1756 chassis

Inputs

16 single ended, 8 differential or 4 differential (high speed)

Input range

±10V 0…10V 0…5V 0…20 mA

Resolution

320 µV/count (15 bits + sign bipolar) @ ±10.25V 160 µV/count (16 bits) @ 0…10.25V 80 µV/count (16 bits) @ 0…5.125V 0.32 µA/count (16 bits) @ 0…20.5 mA

Current draw @ 5.1V

200 mA

Current draw @ 24V

35 mA

Total backplane power

1.86 W

Voltage and current ratings

Backplane: 5.1V DC, 200 mA max 24V DC, 35 mA max, Input Voltage Range: -10…+10V, Input Current Range: 0…20mA, Limited to 100VA

Power consumption

2.33 W

Power dissipation

Voltage: 1.86 W, Current: 3.53 W

Thermal dissipation

Voltage: 6.35 BTU/hr, Current: 12.06 BTU/hr

Open circuit detection time

Differential current or differential voltage: Positive full-scale reading within 5 s, Single-ended current or single-ended voltage: Even-numbered channels go to positive full scale reading within 5 s, odd-numbered channels go to negative full scale reading within 5 s

Overvoltage protection, max

Voltage: 30V DC, Current: 8V DC

Normal mode noise rejection

>80 dB @ 50/60 Hz

Common mode noise rejection

>100 dB @ 50/60 Hz

Channel bandwidth

15 Hz (-3 dB)

Calibrated accuracy 25 °C (77 °F)

Voltage: Better than 0.05% of range, Current: Better than 0.15% of range

Offset drift

45 µV/°C

Gain drift with temperature

Voltage: 15 ppm/°C, Current: 20 ppm/°C

Module error

Voltage: 0.1% of range, Current: 0.3% of range

Module input scan time, min

16 pt single-ended: 16…488 ms 8 pt differential: 8…244 ms 4 pt differential: 5…122 ms

Onboard data alarming

Yes

Data format

Integer mode (left justified, 2 s complement) IEEE 32-bit floating point

Module conversion method

Sigma-Delta

Isolation voltage

250V (continuous), Basic insulation type, Inputs-to-Backplane. No isolation between individual Inputs.

Module keying

Electronic, software configurable

Technical documents (1)

• Rockwell Automation technical data 1756-TD002

Key features

• Electronic keying, software configurable
• Onboard data alarming is available
• Integer or IEEE 32-bit floating point data
• 250V continuous isolation from inputs to backplane
• Open-style enclosure with 0 to 60 °C operation

About the Allen-Bradley 1756-IF16

The 1756-IF16 is a ControlLogix 16 point analog input module for current and voltage (36 pin). Input ranges are ±10V, 0 to 10V, 0 to 5V and 0 to 20 mA, with 16 bit resolution on the unipolar ranges and 15 bits plus sign on the bipolar range. Calibrated accuracy at 25 °C is better than 0.05% of range for voltage and 0.15% of range for current, with a channel bandwidth of 15 Hz (-3 dB). It is one slot wide.

What is the 1756-IF16 used for?

It reads current or voltage signals from field transmitters into a ControlLogix system, using Sigma-Delta conversion, and returns data in integer mode or as IEEE 32-bit floating point. It draws 200 mA at 5.1V and 35 mA at 24V from the backplane, with 250V continuous basic insulation between inputs and backplane.

Lifecycle and successor

Active (Rockwell Automation lifecycle status, checked 24 October 2026).

Before you order

What to photograph or confirm so the right unit is quoted.

Read the catalog number 1756-IF16, the series letter and the firmware revision from the label. Send us a photo of the label and we confirm the match before we quote.