1756-OF8IH

Name: 1756-OF8IH
Brand: ROCKWELL
SKU: 1756-OF8IH

The Allen Bradley 1756-OF8IH is an 8-point HART isolated analog output module for ControlLogix systems, providing high precision and reliability in industrial automation applications.

Product Model1756-OF8IH

Product ID107118

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Precision OutputThe 1756-OF8IH module delivers precise 4-20 mA outputs, ensuring accurate control and monitoring in industrial processes. Its HART capability enhances connectivity and data accessibility.
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2. Isolated Analog OutputsFeaturing 8 isolated analog output channels, this module ensures safe and reliable operation by preventing electrical noise and interference. This is particularly crucial in harsh industrial environments.
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3. HART CapabilityWith HART (Highway Addressable Remote Transducer) capability, the module provides additional connectivity for accessing module data. This feature enhances the module's functionality and integration capabilities.
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4. Industrial-Grade ReliabilityDesigned for the demanding requirements of industrial automation, the 1756-OF8IH module is built to withstand extreme temperatures and environmental conditions. It operates within a temperature range of 0 to 60°C, ensuring continuous performance.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Isolation

250V (continuous), Reinforced insulation type, outputs to backplane. Basic insulation type, output to output, and outputs to ground.

Number Of Channels

Output Signal

4-20mA

Input, current

Yes

Input, voltage

Yes

Input, resistor

5. Comprehensive CertificationThe module is certified for various international standards, including CE, CUL, KC, RCM, and UL. This ensures compliance with global safety and performance regulations, making it suitable for a wide range of industrial applications.

Input, resistance thermometer

Input, thermocouple

Input signal, configurable

Yes

Output, current

Output, voltage

Output signal configurable

Analogue inputs configurable

Yes

Analogue outputs configurable

Type of electric connection

Screw-/spring clA connection

Wire type

Copper

Output range

0...20mA @ 4...20mA

Load reactance

10 Î¼H maximum

Terminal block torque specifications

1756-TBCH: 0.5 Nm (4.4 in-lb)

Module keying

Electronic, software configurable

Offset drift

Â±3 ppm of full scale range/Â°C (72 nA/Â°C typical)

Output conversion method

R-Ladder DAC

Outputs

8 current

Open circuit detection

Current output only (output must be set >=0.1 mA)

Drive capability

50...750 ? with short circuit survival

Data format

IEEE 32-bit floating point

Wire category

2 - on signal ports

Overvoltage protection

Â±24V DC

Module error

0.3% @ 4...20mA

Gain drift with temperature

Â±4 ppm of full scale range/Â°C

Voltage and current ratings

Backplane: 220mA @ 5.1V DC, 360mA @ 24V DC, Output voltage range: 5...30V DC, Output current range: 0...20mA @ 4...20mA

Settling time

HART not enabled: <23 ms to 95% with resistive loads, HART enabled: <100 ms to 95% with resistive loads

Module scan time

Estimate 1 s if all channels are HART enabled, Pass through messages, handheld communications, sary masters, communication errors, or configuration changes can significantly increase the update time.

Current draw

400 mA (estimated) @ 24V @ 24V

Power dissipation

6.5 W nominal (maximum), (<6.4 W with 50 ? load on all channels), (<6.5 W with 250 ? load on all channels), (<6.7 W with 750 ? load on all channels)

Resolution

15 bit across 24 mA, 732 nA per bit

Wire size

Single wire connection (1756-TBCH): 0.33...2.1 mm2 (22...14 AWG) solid or stranded shielded copper wire, rated at 105 Â°C (221 Â°F) or greater, 1.2 mm (3/64 in.) insulation maximum, Single wire connection (1756-TBS6H): 0.33...2.1 mm2 (22...14 AWG) solid or

Calibrated accuracy

0.15% @ 4...20mA, 25 Â°C (77 Â°F)

Suitable for safety functions

Output short circuit protection

Current electronically limited to <=21 mA with no damage

Surrounding air temperature, max

60 Â°C

North American temperature code

T4A

Emissions

IEC 61000-6-4

ESD immunity

6 kV contact discharges, 8 kV air discharges

EFT/B immunity

Â±2kV @ 5kHz on signal ports

Relative humidity

5...95% noncondensing

Conducted RF immunity

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

Surge transient immunity

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

Operating temperature

0 Â°C <Ta <60 Â°C (32 Â°F <Ta <140 Â°F)

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

Calibration interval

12 mo typical

ATEX temperature code

IECEx temperature code

Isolation voltage

250V (continuous), Reinforced insulation type, outputs to backplane, Basic insulation type, output to output, and outputs to ground.

Enclosure type rating

None (open-style)

Repairable

REPAIRABLE

Preferred Availability

true

Quick Turnaround

false

Dimension Height

5.334

Lead Time

Dimension Width

18.542

Dimension Length

23.876

Stock Status

STOCKED

Weight

0.408

Weight Unit