Allen-Bradley,1756-IH16I A
Allen-Bradley,1756-IH16I A
Allen-Bradley,1756-IH16I A
Allen-Bradley,1756-IH16I A
Allen-Bradley,1756-IH16I A
Allen-Bradley,1756-IH16I A
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1756-IH16I/A

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The 1756-IH16I/A is a digital input module designed for Allen-Bradley's ControlLogix platform to provide reliable signal acquisition for harsh industrial environments.
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Technical specifications for 1756-IH16I/A

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-IH16I/A
  • Product Family:
    ControlLogix
  • Product Type:
    digital input module
  • Temperature, operating:
    0…60 °C (32…140 °F)
  • Temperature, nonoperating:
    -40…85 °C (-40…185 °F)
  • Relative humidity:
    5…95% noncondensing
  • Vibration:
    2g @ 10…500 Hz
  • Shock, operating:
    30g
  • Shock, nonoperating:
    50g
  • Weight:
    0.2 kg
  • Estimated shipping dimensions:
    3.6x14.3x14.5cm
  • Tariff Code:
    85389091
  • 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 Diagnostics & Protection Safety & Compliance Applications

Features:

  • Individual Channel Isolation
  • High-Voltage DC Signal Support
  • Configurable Digital Input Filters
The Allen-Bradley 1756-IH16I/A provides 16 individually isolated channels, which prevents electrical noise or ground loops from affecting other circuits. This feature ensures that each input on the Allen-Bradley 1756-IH16I/A operates independently, enhancing system reliability in complex electrical environments.

Designed for 125V DC nominal systems, the Allen-Bradley 1756-IH16I/A supports a wide operating voltage range of 90V to 146V DC. This capability allows the Allen-Bradley 1756-IH16I/A to interface directly with high-voltage DC field devices such as circuit breakers and protection relays without additional signal conditioning.

The Allen-Bradley 1756-IH16I/A features user-selectable input filter times (off-to-on and on-to-off) to eliminate the effects of contact bounce and electrical transients. By adjusting these software-configurable filters, the Allen-Bradley 1756-IH16I/A can be optimized for specific response times or noise immunity requirements.

The 1756-IH16I/A Allen-Bradley ControlLogix DC Isolated input module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1756-IH16I/A ControlLogix DC Isolated input module Manuals,Datasheets,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-IH16I/A ControlLogix DC Isolated input module

General

  • Manufacturer Allen-Bradley
  • Model 1756-IH16I/A
  • Condition New Original ready stock
  • Product Family 1756-IB16IOSE,1756-IB32,1756-IC16,1756-IG16
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.
  • Individual Isolation: Offers 250V continuous isolation between each of the 16 inputs, protecting the module and backplane from field-side electrical noise and faults.
  • Signal Integrity: Includes user-selectable input filter times (e.g., 0, 1, or 2 ms for Off-to-On transitions) to debounced signals and reduce noise interference.
  • Visual Status: Features front-panel LED indicators for module health, communication status, and individual input point status.
  • Over-Voltage Handling: Designed with a maximum inrush current of 250 mA to withstand initial power surges during startup.
  • Global Certifications: Complies with UL, CE, CSA, RCM, and KC standards.
  • Hazardous Location Ratings: Some versions meet North American temperature code T4A and may be certified for specific ATEX/IECEx hazardous environments if marked accordingly.
  • Environmental Resilience: Tested for vibration and shock resistance according to IEC 60068-2-6 and 60068-2-27 standards, with an operating temperature range of 0–60 °C (32–140 °F).
  • Installation Requirements: Must be used within an enclosure accessible only by tools and with a compatible Removable Terminal Block (RTB) like the 1756-TBCH or 1756-TBS6H.
  • Power Distribution: Monitoring high-voltage DC status signals in substations or power plants.
  • Large-Scale Industrial Systems: High-speed digital signal detection for complex production automation.
  • Harsh Environments: Often used in systems requiring robust signal reliability where standard lower-voltage DC modules are insufficient.
Description
The 1756-IH16I/A is a high-performance digital input module designed for Allen-Bradley's ControlLogix platform, engineered to deliver reliable signal acquisition in demanding industrial environments. This module features 16 individually isolated inputs, providing superior electrical separation between channels to ensure signal integrity and system protection in high-voltage DC applications.

The 1756-IH16I/A module is classified under the 125V DC sink/source voltage category, making it versatile for both sinking and sourcing input configurations. The module operates within a robust 90…146V DC voltage range, accommodating variations in industrial power supplies while maintaining consistent performance. The nominal input voltage is rated at 125V DC, ensuring compatibility with standard industrial control voltages commonly found in heavy machinery, process automation, and power distribution systems.

Each of the 16 input channels on the 1756-IH16I/A is individually isolated, which prevents ground loop issues and protects the control system from electrical noise and transient voltage spikes. This individual isolation architecture enhances system reliability by ensuring that a fault on one channel does not propagate to other channels or back to the controller. The 1756-IH16I/A is specifically designed for applications requiring high-voltage DC input monitoring, such as motor status feedback, circuit breaker position indication, and power system monitoring where electrical isolation is critical for safety and equipment protection.
Revisions

Revision Part #

Also known as

1756-IH16I Ser A
1756-IH16I/A, Series A, Rev A
Alternative Names
17561H161 1756-1H16I 1756IH161 I756-IHI6I
Technical notes
The Allen-Bradley 1756-IH16I/A features 16 individually isolated 125V DC inputs with user-configurable filter times (0–18 ms) to enhance noise immunity and signal integrity. It supports a wide operating voltage range of 90–146V DC, provides 250V continuous isolation between channels and backplane, and is certified for hazardous locations (Class I, Division 2).
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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 type of module is the Allen-Bradley 1756-IH16I/A?
The 1756-IH16I/A is a sink/source digital input module featuring 16 individually isolated inputs, designed for the ControlLogix platform.
What hardware is required to connect the 1756-IH16I/A to a ControlLogix chassis?
The 1756-IH16I/A requires a 36-pin RTB (removable terminal block housing) of either the 1756-TBCH or 1756-TBS6H before it can be connected to a compatible chassis.
What status indicators does the 1756-IH16I/A provide?
The 1756-IH16I displays module health status, input status, and communication status for comprehensive system monitoring.
What is the operating voltage range of the 1756-IH16I/A?
The 1756-IH16I/A operates within a voltage range of 90 to 146 Volts DC, with a voltage category of 125 Volts DC.

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