Allen-Bradley 1756-IB16ISOE/A
Allen-Bradley 1756-IB16ISOE/A
Allen-Bradley 1756-IB16ISOE/A
Allen-Bradley 1756-IB16ISOE/A
Allen-Bradley 1756-IB16ISOE/A
Allen-Bradley 1756-IB16ISOE/A
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1756-IB16ISOE/A

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The 1756-IB16ISOE/A is a ControlLogix 16-point 10-55V DC sequence of events input module with isolated channels, 6 kV ESD immunity, and hazardous location certifications including ATEX Zone 2.
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Technical specifications for 1756-IB16ISOE/A

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-IB16ISOE/A
  • Product Family:
    ControlLogix
  • Product Type:
    ControlLogix Sequence of Events Input Module
  • Inputs:
    16 isolated DC inputs
  • Voltage Range:
    10-55V DC
  • Operating Temperature:
    0°C to 60°C
  • ESD Immunity:
    6 kV contact, 8 kV air
  • EFT/B Immunity:
    ±4 kV at 5 kHz on signal ports
  • Surge Immunity:
    ±1 kV DM, ±2 kV CM on signal ports
  • Radiated RF Immunity:
    10V/m (80-2000 MHz), 3V/m (2000-2700 MHz)
  • Hazardous Locations:
    Class I Div 2, ATEX Zone 2, IECEx, UKEx
  • Key Benefit:
    Solves precise timestamping of digital events—SOE capability records input changes with high accuracy for fault diagnosis and root cause analysis, with isolated channels preventing ground loops.
  • Weight:
    0.2 kg
  • Estimated shipping dimensions:
    3.5x14.2x14.5cm
  • Tariff Code:
    8517795000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Application Certification Standards Compatibility

Features:

  • 16 isolated DC inputs with sequence of events (SOE) recording for precise timestamping of state changes.
  • High immunity ratings: 6 kV ESD, 10V/m radiated RF, ±4 kV EFT/B, and ±2 kV surge on signal ports.
  • Multiple hazardous location certifications: Class I Div 2, ATEX Zone 2, IECEx, UKEx, and CCC.
The 1756-IB16ISOE/A captures input state changes with high-accuracy timestamps. Use it for sequence of events analysis in power plants, substations, and process facilities. Identify the exact order of events during faults—no more guessing which happened first.

ESD, EFT, surge, and radiated RF immunity mean this module keeps working where others fail. Install it near VFDs, contactors, and high-power equipment. The 10-55V wide range accommodates both 24V and 48V field devices.

Class I Div 2 for North America, ATEX Zone 2 for Europe, IECEx for international, CCC for China. The 1756-IB16ISOE/A simplifies global machine builds. The conformal-coated version (ISOEK) adds moisture protection for harsh environments.

The 1756-IB16ISOE/A Allen-Bradley I/O Modules may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

Allen-Bradley 1756-IB16ISOE/A I/O Modules Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1756-IB16ISOE/A I/O Modules Specs

General

  • Manufacturer Allen-Bradley
  • Model 1756-IB16ISOE/A
  • Condition New Original ready stock
  • Product Family 1756-IB16ISOEK/A,1756-IB16I,1756-IB16
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Post-Trip Analysis: Used to analyze the triggering sequence of various sensors (with microsecond accuracy) during tripping in power systems (such as substations) or large chemical plants to identify the root cause of the accident.
  • High-Speed ​​Monitoring and Alarming: Monitors the switching status of critical equipment (such as turbines and compressors) and uses the data for safety interlocking and alarm functions.
  • Distributed Control System (DCS) Integration: Used as part of the ControlLogix platform for complex production automation and digitalization operations.
  • UL/cUL Certification: Listed in UL file E65584, applicable to hazardous locations in Class I Division 2 (Groups A, B, C, D).
  • IECEx/ATEX Certification: IECEx certified, supporting explosion-proof applications in specific hazardous areas.
  • Classification Society Certification: American Bureau of Shipping (ABS) certified, applicable to ships and offshore installations.
  • Marine Mutual Recognition: Supports applications in marine automation control, monitoring, and safety functions.
  • Hardware Platform: Must be installed in a ControlLogix rack (Chassis) and powered by a 1756 series power supply.
  • Connectivity Components: Removable Terminal Blocks (RTBs) need to be ordered separately; 1756-TBCH or 1756-TBS6H are recommended.
  • Software Environment: Supports configuration and programming using Studio 5000 Logix Designer (formerly RSLogix 5000).
  • Producer/Consumer Technology: Supports the Producer/Consumer data exchange mode of the Logix architecture, allowing input status to be shared across multiple controllers for high system interoperability.
Description
The 1756-IB16ISOE/A is a high-performance digital input module for ControlLogix systems, specifically designed for sequence of events (SOE) recording. It provides 16 isolated DC inputs with a voltage range of 10-55V, making it suitable for industrial applications requiring precise timestamping of state changes. 

For harsh industrial environments, the 1756-IB16ISOE/A offers exceptional immunity: 6 kV contact and 8 kV air ESD protection, 10V/m radiated RF immunity from 80-2000 MHz, and ±4 kV EFT/B immunity on signal ports. It operates from 0°C to 60°C and withstands 30g operating shock and 2g vibration at 10-500 Hz.

The 1756-IB16ISOE/A carries extensive certifications including cULus for US and Canada, ATEX Zone 2, IECEx, UKEx, CCC, and KC. It meets European Union EMC and LVD directives, UKCA requirements, and Moroccan regulations. 

This input module solves the pain point of capturing time-stamped digital events in safety-critical applications. The 1756-IB16ISOE/A’s sequence of events capability records input changes with high accuracy, enabling precise fault diagnosis and root cause analysis. 
Revisions

Revision Part #

Also known as

1756-IB16ISOE Ser A
1756-IB16ISOE/A, Series A, Rev A
Alternative Names
1756-IB16I 1756-IB16 1756-IB32 1756-IB32I
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the purpose of the sequence of events (SOE) feature?
It captures exact timestamps of input state changes, enabling precise fault diagnosis and root cause analysis in critical processes.
What hazardous location certifications does the 1756-IB16ISOE/A carry?
cULus Class I Division 2, ATEX Zone 2, IECEx, UKEx, and CCC explosion-proof certification.
What is the difference between 1756-IB16ISOE and 1756-IB16ISOEK?
The ISOEK version has conformal coating for added protection against moisture and corrosive environments.
What are the ESD immunity ratings for this module?
6 kV contact discharges and 8 kV air discharges per IEC 61000-4-2.