Analog I/O module Allen-Bradley model 1756-OF8I

Technical specifications

Lifecycle Status

Active

Repair Options Available

Yes

Display

Module Health, In Calibration,Mode, Input, Fault and,Communication Status

Isolation

250V (continuous), reinforced,insulation type, outputs to,backplane. 250V (continuous),basic insulation type, output,to output

Special Features

Per Point Isolation

Analogue inputs configurable

true

Analogue outputs configurable

false

Calibrated accuracy

0.05% @ 25°C (77 °F)

Conducted RF immunity

10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz

Current draw

200mA @ 5.1V, Voltage or current mode with 250 Ω loads = 220mA @ 24V, Current mode with 500 Ω loads = 275mA @ 24V, Current mode with 750 Ω loads = 340mA @ 24V, Current mode with 1000 Ω loads = 385mA @ 24V

Data format

IEEE 32-bit floating point

Drive capability

Current output = 0...1000 Ω, Voltage output =>1000 Ω

EFT/B immunity

±4kV @ 5kHz on signal ports

Emissions

IEC 61000-6-4

Enclosure type rating

None (open-style)

ESD immunity

6 kV contact discharges, 8 kV air discharges

Input, current

true

Input, resistance thermometer

false

Input, resistor

false

Number of Inputs and Type

Eight isolated channels - any combination of voltage or current mode

Input signal, configurable

true

Input, thermocouple

false

Input, voltage

true

Isolation voltage

250V (continuous), reinforced insulation type, outputs to backplane, 250V (continuous), basic insulation type, output to output

Module conversion method

R-Ladder DAC, monotonicity with no missing codes

Module error over full temperature range

0.1 %

Module keying

Electronic, software configurable

Module scan time

1 ms minimum

Nonoperating temperature

-40 °C

North American temperature code

T4

Open circuit detection

Current output = Yes

Operating temperature

0 to 60 °C

Output, current

false

Output impedance

46 Ω (Current output)

Output range

-10…10V, 0…10V, 0…5V, 0…20 Ma

Output signal configurable

false

Documents / datasheets

Source reviewed: 2026-10-24

Description

Analog I/O module Allen-Bradley part number 1756-OF8I; Current draw: 200mA @ 5.1V, Voltage or current mode with 250 Ω loads = 220mA @ 24V, Current mode with 500 Ω loads = 275mA @ 24V, Current mode with 750 Ω loads = 340mA @ 24V, Current mode with 1000 Ω loads = 385mA @ 24V; Input, current: true; Input signal, configurable: true. Technical specifications, condition and supply feasibility are checked before ordering.