Allen-Bradley 1756-IB16I ControlLogix Isolated Discrete DC Input Module

SKU 1756-IB16I

In stock

12-month warranty
Free returns within 30 days

Manufacturer: Allen-Bradley
Product No.: 1756-IB16I
Country of origin:United States
Product Type: Discrete DC Input Module
Payment: T/T, Western Union
Weight: 350g
Dimensions: 14.5 x 11.2 x 3.5 cm
Shipping port: Xiamen
Warranty: 12 months

Description

The Allen-Bradley 1756-IB16I is a 16-point isolated discrete DC input module designed for the ControlLogix platform. This single-slot module interfaces with binary sensors such as pushbuttons, limit switches, and auxiliary contacts, routing real-world field signals directly to the controller backplane. Engineered for high-noise industrial environments, the module features channel-to-channel optical isolation, protecting internal controller components from transient voltage spikes and ground loops originating in heavy-duty sensor networks.

Installed directly into any slot of a ControlLogix chassis except the primary controller slot, the 1756-IB16I supports deployment in local, distributed, and remote I/O architectures. Field wiring terminates via a compatible Removable Terminal Block (RTB), allowing technicians to disconnect and replace the module chassis-side without disturbing external sensor connections. Configurable input filter times enable users to fine-tune noise rejection and response latency based on specific application demands.

Features

16 individually isolated input channels operating on a nominal 24VDC source
User-selectable input filter times for balancing noise rejection and signal response speed
Removable Terminal Block (RTB) interface supporting screw-clamp or spring-clamp connections
Backplane power consumption of 100mA at 5.1VDC and 3mA at 24VDC
Status indicators providing visual verification of individual channel states and module health

Applications

Interfacing discrete field devices such as limit switches, photoelectric sensors, and pushbuttons
Monitoring safety circuit auxiliary contacts and machine interlocks in automated assembly lines
Acquiring binary status signals from motor starters, contactors, and pneumatic solenoid valves
Providing isolated digital telemetry inputs in distributed ControlLogix remote rack architectures

Technical Specifications

Parameter	Specification
Brand	Allen-Bradley
Module Type	Isolated Discrete DC Input Module
Product Family	ControlLogix (1756)
Inputs per Module	16 isolated
Voltage Category	24VDC Sink/Source
Operating Voltage Range	10 to 30VDC
Nominal Input Voltage	24VDC
Off-State Voltage	5VDC max
Off-State Current	1.5mA max
On-State Current	2mA min at 10VDC / 10mA max at 30VDC
Backplane Current Draw	100mA at 5.1VDC; 3mA at 24VDC
Total Backplane Power	0.58W
Power Dissipation	5.0W max at 60 degC
Thermal Dissipation	17.05 BTU/hr
Slot Width	1 single slot
Wire Size	0.33 to 2.1 mm2 (22 to 14 AWG) solid or stranded
Isolation Voltage	250V reinforced insulation (continuous), tested at 1350V AC for 2s
Operating Temperature	0 to 60 degC (32 to 140 degF)
Country of Origin	United States

Compliance and Certifications

UL Listed Industrial Control Equipment
CE Compliant for European Union Directives
CSA Certified for Canadian Standards
C-Tick compliant for Australian market
Hazardous Location Approval: Class I, Division 2, Groups A, B, C, D

FAQ

What is the primary function of the Allen-Bradley 1756-IB16I?

The 1756-IB16I is a 16-point isolated discrete DC input module for the ControlLogix platform, used to interface 24VDC binary field devices like pushbuttons, limit switches, and sensors with the PLC controller.

Does the 1756-IB16I require a Removable Terminal Block?

Yes, this module requires a compatible Removable Terminal Block (RTB) such as a 1756-TBCH or 1756-TBNH to terminate field wiring, allowing module replacement without disconnecting field cables.

What is the channel isolation rating for this module?

The 1756-IB16I provides channel-to-channel optical and galvanic isolation, rated at 250V reinforced continuous insulation voltage tested to 1350V AC for 2 seconds.

How much backplane current does the 1756-IB16I consume?

The module draws 100mA from the 5.1VDC backplane power rail and 3mA from the 24VDC backplane power rail, resulting in a total backplane power dissipation of 0.58W.

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

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

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

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