Allen Bradley 1746-ITB16 SLC 500 Input Module

The 1746-ITB16 is a high-speed digital input module belonging to Allen-Bradley’s SLC™ series 

(product series: Bul. 1746 / 1747), categorized under SLC™ Digital I/O Modules for Compact PLC 

Systems. It is designed as a 16-channel DC sinking input module, supporting 10–30 V DC input 

signals and functioning as a source load type. With 16 input points per common, it is optimized 

for high-speed response scenarios, making it suitable for industrial control systems requiring 

rapid digital signal acquisition.

The module offers flexible system expansion capabilities, compatible with a wide range of 

replacement power supplies, chassis, communication modules, and I/O accessories. It can be 

paired with the EtherNet I/P Adapter (1747-AENTR) to convert existing systems to distributed I/O 

configurations. Users can also select analog and digital I/O cards to modify and expand system 

functions as needed. It receives continued support from NHP and Rockwell Automation, 

including lifecycle management strategies. Note that the provided product image is 

representative, and the actual product may vary based on configuration selections.

Core Specifications: 16 digital input channels, DC sinking input type (source load), 10–30 V DC 

input range, compatible with 12/24 V DC signals, high-speed response performance, 16 input 

points per common.

Temperature Adaptability: Operating temperature range 0–60 °C (minimum 0 °C, maximum 60 

°C); storage temperature range -40–85 °C (minimum -40 °C, maximum 85 °C).

Humidity Resistance: Maximum relative humidity of 95% RH (specific non-condensing 

requirement not explicitly stated, consistent with typical industrial module standards).

Certifications & Documentation: Equipped with IECEx Certificate, Supplier Declaration of 

Conformity, Installation Guide, User Manual, Manufacturer Datasheet, and Manufacturer 

Catalogue & Product Selection documents for compliance and deployment reference.

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