Overview

The 1756-IB16I is a high-performance DC digital input module from Rockwell Automation. It features 16 individually isolated inputs designed for industrial automation systems, ensuring precise monitoring and reliable signal acquisition. The module provides configurable filtering and fast response times, making it ideal for complex control environments.

It meets global safety and EMC standards, including UL, CE, IECEx, ATEX, and UKex certifications, supporting hazardous and demanding industrial applications. Reverse polarity protection and robust thermal and shock tolerances enhance operational reliability.

Key Features

• 16 isolated DC inputs compatible with 12/24V DC sink/source systems

• Operating voltage range: 10–30V DC, nominal 24V DC

• Input delay times:

• Off to On: 1 ms max + filter (user-selectable 0, 1, 2 ms)

• On to Off: 4 ms max + filter (user-selectable 0, 1, 2, 9, 18 ms)

• Current draw: 100 mA @ 5.1V, 3 mA @ 24V

• Backplane power: 0.58 W

• Max power dissipation: 5 W @ 60 °C (140 °F)

• Thermal dissipation: 17.05 BTU/hr

• Off-state voltage/current: max 5V / 1.5 mA

• On-state current: min 2 mA @ 10V DC, max 10 mA @ 30V DC

• Inrush current: max 250 mA peak (decays to <37% in 22 ms)

• Input impedance: max 3 kΩ @ 30V DC

• Cyclic update time: 200 µs – 750 ms, software-configurable

Mechanical & Wiring

• Removable terminal block housing: 1756-TBCH, 1756-TBS6H

• Slot width: 1

• Wire category: 1 (per Industrial Automation Wiring Guidelines)

• Module keying: Electronic, software-configurable

• Enclosure type: Open-style

• Temperature code: T4

Environmental Specifications

• Operating temperature: 0–60 °C (32–140 °F)

• Non-operating temperature: -40–85 °C (-40–185 °F)

• Humidity: 5–95% noncondensing

• Vibration & shock: 2 g @ 10–500 Hz; 30 g operating shock

• ESD immunity: 6 kV contact, 8 kV air discharge

• Radiated RF immunity: 3–10 V/m across 80–2700 MHz

• Surge & EFT protection: ±1 kV line-line, ±2 kV line-earth

Certifications

• cULus: UL Listed Industrial Control Equipment

• CE: EMC & LVD compliant

• ATEX / IECEx / UKex: Zone 2 hazardous locations

• FM: Approved for Class I Division 2

• RCM / KC / UKCA / Morocco: Regional industrial compliance