Allen-Bradley 1756-IB16 ControlLogix 16-Point DC Digital Input Module

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Manufacturer: Allen-Bradley
Product No.: 1756-IB16
Country of origin:United States
Product Type: Digital Input Module
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 300g
Dimensions: 140 mm x 145 mm x 35 mm (H x W x D)
Shipping port: Xiamen
Warranty: 12 months

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Description

Allen-Bradley 1756-IB16 is a ControlLogix digital input module designed to interface field signal devices with ControlLogix system controllers. The 1756-IB16 provides 16 sink input points operating within a voltage range of 10 to 31.2V DC (24V DC nominal). It features 250V continuous reinforced insulation from inputs to backplane and basic insulation between input groups. Designed for single-slot mounting, the module processes field signal states with software-configurable input delay filters and timestamping capabilities.

Features

16 digital input points configured in 2 groups of 8 points.
Operating voltage range of 10 to 31.2V DC with 24V DC nominal rating.
Software-configurable input delay times for Off-to-On and On-to-Off state transitions.
Time stamp of inputs precise to within +/-200 us.
Electronic, software-configurable module keying.
Removable Terminal Block (RTB) housing with user-defined mechanical keying.
Reverse polarity protection.

Applications

Digital field signal interface in ControlLogix PLC systems.
Industrial sensor, proximity switch, and limit switch monitoring.
Discrete state monitoring in factory automation and process control networks.
High-reliability DC input processing in hazardous locations.

Technical Specifications

Attribute	Specification
Manufacturer	Allen-Bradley / Rockwell Automation
Catalog Number	1756-IB16
Inputs	16 (8 points per group)
Voltage Category	12/24V DC sink
Operating Voltage Range	10...31.2V DC
Input Voltage, Nom	24V DC
Input Delay Time (Off to On)	Hardware delay: 290 us nom / 1 ms max + filter time User-selectable filter time: 0 ms, 1 ms, or 2 ms
Input Delay Time (On to Off)	Hardware delay: 700 us nom / 2 ms max + filter time User-selectable filter time: 0, 1, 2, 9, or 18 ms
Current Draw @ 5.1V	100 mA
Current Draw @ 24V	2 mA
Total Backplane Power	0.56 W
Power Dissipation, Max	5.1 W @ 60 degC (140 degF)
Thermal Dissipation	17.39 BTU/hr
Off-State Voltage, Max	5V
Off-State Current, Max	1.5 mA
On-State Current, Min	2 mA @ 10V DC
On-State Current, Max	10 mA @ 31.2V DC
Inrush Current, Max	250 mA peak (decaying to < 37% in 22 ms, without activation)
Input Impedance, Max	3.12 kohm @ 31.2V DC
Cyclic Update Time	200 us...750 ms
Change of State	Software configurable
Time Stamp of Inputs	+/-200 us
Isolation Voltage	250V (continuous), reinforced insulation type, inputs-to-backplane 250V (continuous), basic insulation type, input group-to-group No isolation between individual inputs
Module Keying	Electronic, software configurable
Removable Terminal Block Housing	1756-TBNH, 1756-TBSH
RTB Keying	User-defined mechanical
Slot Width	1
Wire Category	1
Terminal Block Torque Specs	1756-TBNH: 1.36 N-m (12 lb-in)
Enclosure Type	None (open-style)
Temperature Code	T3
Reverse Polarity Protection	Yes
Temperature, Operating	0...60 degC (32...140 degF)
Temperature, Nonoperating	-40...+85 degC (-40...+185 degF)
Relative Humidity	5...95% noncondensing
Conformal Coated	Yes
Corrosive Atmosphere	Severity Level G3 per ANSI/ISA 71.04-2013 Severity Level CX per IEC 60721-3-3:2019
Vibration	2 g @ 10...500 Hz
Shock, Operating	30 g
Shock, Nonoperating	50 g

Connections/Interfaces

Terminal Block Housing	Wire Size
1756-TBNH	Single wire connection: 0.33...2.1 mm2 (22...14 AWG) solid or stranded copper wire rated at 105 degC (221 degF), or greater, 1.2 mm (3/64 in.) insulation max. Do not wire more than one conductors on any terminal. Double wire connection: 0.33...1.3 mm2 (22...16 AWG) solid or stranded copper wire rated at 105 degC (221 degF), or greater, 1.2 mm (3/64 in.) insulation max. Do not wire more than two conductors on any terminal.
1756-TBSH	Single wire connection: 0.33...2.1 mm2 (22...14 AWG) solid or stranded shielded copper wire rated at 105 degC (221 degF), or greater, 1.2 mm (3/64 in.) insulation max.

Terminal Block Housing

Wire Size

1756-TBNH

Single wire connection: 0.33...2.1 mm2 (22...14 AWG) solid or stranded copper wire rated at 105 degC (221 degF), or greater, 1.2 mm (3/64 in.) insulation max. Do not wire more than one conductors on any terminal.

Double wire connection: 0.33...1.3 mm2 (22...16 AWG) solid or stranded copper wire rated at 105 degC (221 degF), or greater, 1.2 mm (3/64 in.) insulation max. Do not wire more than two conductors on any terminal.

1756-TBSH

Single wire connection: 0.33...2.1 mm2 (22...14 AWG) solid or stranded shielded copper wire rated at 105 degC (221 degF), or greater, 1.2 mm (3/64 in.) insulation max.

Installation Guidelines

Chassis Alignment: Insert the module into any available slot of a ControlLogix chassis, ensuring full connection with the backplane logic board.
Mechanical Keying: Preset mechanical keying tabs on the 1756-TBNH or 1756-TBSH Removable Terminal Block to align with the module slots to prevent mis-wiring during module replacement.
Field Wiring Torque: Secure signal conductor wire terminations to the terminal block screws applying a specified torque of 1.36 N-m (12 lb-in).
Wiring Separation: Follow Category 1 conductor routing guidelines to ensure proper spacing between high-voltage lines and signal conductors.

Compliance and Certifications

cULus: UL Listed Industrial Control Equipment, certified for US and Canada (UL File E65584); UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations (UL File E194810).
CE: Compliant with European Union 2014/30/EU EMC Directive (EN 61326-1, EN 61000-6-2, EN 61000-6-4, EN 61131-2) and 2014/35/EU LVD Directive (EN 61131-2).
RCM: Australian Radiocommunications Act, compliant with EN 61000-6-4.
Ex: European Union 2014/34/EU ATEX Directive, compliant with EN IEC 60079-0, EN IEC 60079-7; II 3 G Ex ec IIC T3 Gc; UL22ATEX2820X.
IECEx: IECEx System, compliant with IEC 60079-0, IEC 60079-7; II 3 G Ex ec IIC T3 Gc; IECEx UL 22.0065X.
UKEx: Schedule 1 of UKEX Regulation 2016 No. 1107; Zone 2 classification according to UKEX Regulation 2016 No. 1107; UL22UKEX2602X.
FM: FM Approved Equipment for use in Class I Division 2 Group A,B,C,D Hazardous Locations.
KC: Korean Registration of Broadcasting and Communications Equipment, Article 58-2 Clause 3.
UKCA: Compliant with 2016 No. 1091 (EMC), 2016 No. 1101 (Safety), 2016 No. 1107 (Ex), and 2012 No. 3032 (RoHS).
Morocco: Compliant with Arrete ministeriel n 6404-15 (15 octobre 2015) and n 6404-15 (16 juillet 2015).
CCC: CCC 2020122309111998, CNCA-C23-01 Explosion-Proof Electrical Products.

Key Features:

#ControlLogix #Digital Input Module

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

What is the operating voltage category for the device?

The device operates on a 12/24V DC sink voltage category with an allowable operating voltage range from 10 to 31.2V DC.

How many input points and groups are available on the module?

The module features 16 digital input points divided into 2 isolated groups of 8 points each.

What are the terminal block options for field wiring?

Field wiring uses removable terminal block housings, specifically the 1756-TBNH or 1756-TBSH models.

What level of electrical isolation does the device provide?

The device provides 250V continuous reinforced insulation between inputs and backplane, and 250V continuous basic insulation between input groups, with no isolation between individual inputs within a group.

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Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Color pattern	Greyish White
Country of origin	United States
Power source	DC Power

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Allen-Bradley 1756-IB16 ControlLogix 16-Point DC Digital Input Module