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Allen-Bradley 1756-IH16I
by Allen-Bradley
Read verified buyer reviews ↓OverviewThe Allen-Bradley 1756-IH16I is a robust digital isolated input module specifically crafted for integration within ControlLogix systems. This module features 16 individually isolated inputs, providing exceptional flexibility in signal management and enhanced protection against electrical disturbances. Operating reliably across a 90-146V DC range, it supports both sink and source configurations, making it a highly adaptable solution for demanding industrial automation environments. Its advanced design ensures superior signal clarity, significantly reducing noise and boosting system safety, which is paramount in critical high-voltage industrial control applications.Key Features 16 Independent Isolated Inputs: Maximizes signal integrity and offers superior protection against channel-to-channel interference. 125V DC Sink/Source Category: Provides extensive compatibility for diverse industrial power requirements. Broad Operating Voltage Range (90-146V DC): Guarantees stable and reliable input signal processing across varying DC power conditions. Optimized for 125V DC Input: Perfectly suited for high-voltage industrial control systems, ensuring precise operation. Low Off-State Voltage (Max 20V DC): Minimizes the risk of false triggering, enhancing operational accuracy and system stability. Efficient Power Consumption: Engineered for optimized power usage, contributing to overall system efficiency. Technical Specifications Model: 1756-IH16I Series: ControlLogix Input Type: Digital Isolated Input Number of Inputs: 16 Individually Isolated Channels Voltage Range: 90-146V DC Nominal Voltage: 125V DC Sink/Source Configuration: Both Supported Connector Type: ControlLogix Backplane Mounting: ControlLogix Chassis Operating Temperature: -25°C to 60°C (-13°F to 140°F) Power Dissipation, Max: 5W @ 60°C (140°F) Current Draw @ 5.1V: 125mA Current Draw @ 24V: 3mA On-State Current Range: Min 1mA @ 90V DC, Max 3mA @ 146V DC Inrush Current, Max: 250mA Applications High-Voltage Industrial Control Systems: Ensures secure and accurate signal input processing in demanding environments. Power Plants & Utility Control: An ideal solution for reliable 125V DC monitoring and precise control applications. Manufacturing & Automation Processes: Provides essential accurate high-voltage signal detection crucial for complex automated lines. Material Handling & Logistics Systems: Guarantees reliable and isolated input for critical operational safety and efficiency. Critical Infrastructure Monitoring: Enhances the safety, stability, and responsiveness of vital control infrastructure. Oil & Gas Industry: Essential for monitoring and controlling high-voltage inputs in hazardous and remote locations. Why Choose? Unmatched Signal Integrity: With 16 individually isolated inputs, crosstalk and signal interference are virtually eliminated, guaranteeing precise data acquisition. Exceptional Versatility: The ability to support both sink and source configurations, coupled with a broad voltage range, makes it adaptable to nearly any high-voltage application. Optimized for Industrial Demands: Specifically designed for 125V DC nominal inputs, this module excels in challenging industrial environments requiring high-voltage control. Reliable and Efficient Operation: Its thoughtful design minimizes power dissipation while delivering consistently stable performance, leading to long-term operational savings. Seamless ControlLogix Integration: Enjoy effortless compatibility and rapid deployment within existing or new ControlLogix PLC systems for enhanced automation. Enhanced Safety Features: Individual isolation per input drastically improves system safety by preventing dangerous electrical interference and short circuits. Order NowElevate your industrial control systems with the superior performance and reliability of the Allen-Bradley 1756-IH16I ControlLogix Isolated Input Module.FAQWhat systems is the Allen-Bradley 1756-IH16I compatible with?This module is engineered for seamless integration within ControlLogix systems.How many inputs does the 1756-IH16I module feature?It includes 16 individually isolated digital inputs.What is the operating voltage range for this module?The module operates reliably within a 90-146V DC range, with a nominal voltage of 125V DC.Does it support both sink and source configurations?Yes, the Allen-Bradley 1756-IH16I expertly accommodates both sink and source configurations.What are the primary benefits of individually isolated inputs?Individually isolated inputs maximize signal integrity, offer superior protection against channel-to-channel interference, and enhance overall system safety.
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Allen-Bradley 1756-IH16I
Overview
This is a genuine Allen-Bradley component from the ControlLogix family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.
Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.
Key Features
- Genuine Allen-Bradley catalog part
- Tested before shipment
- Backed by PalmPartsSolution warranty
- Cross-reference and revision assistance available
- Compatible with the broader Allen-Bradley automation ecosystem
- Engineered to integrate inside ControlLogix installations
Compatibility
When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:
- Input/output voltage and current rating
- Communication protocol and network role
- Mounting form factor and footprint
- Operating temperature, humidity, and IP rating
- Required certifications (UL, CE, ATEX, marine, etc.)
Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.
Replacement Information
Three ways to source this part through PalmPartsSolution:
- Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- Engineered migration — current-generation Allen-Bradley platform with documented conversion notes for the ControlLogix family
Contact our engineering team if you need help choosing between these tracks.
Technical Specifications
- Model: 1756-IH16I
- Series: ControlLogix
- Input Type: Digital Isolated Input
- Number of Inputs: 16 Individually Isolated Channels
- Voltage Range: 90-146V DC
- Nominal Voltage: 125V DC
- Sink/Source Configuration: Both Supported
- Connector Type: ControlLogix Backplane
- Mounting: ControlLogix Chassis
- Operating Temperature: -25°C to 60°C (-13°F to 140°F)
- Power Dissipation, Max: 5W @ 60°C (140°F)
- Current Draw @ 5.1V: 125mA
- Current Draw @ 24V: 3mA
- On-State Current Range: Min 1mA @ 90V DC, Max 3mA @ 146V DC
- Inrush Current, Max: 250mA
Applications
- High-Voltage Industrial Control Systems: Ensures secure and accurate signal input processing in demanding environments.
- Power Plants & Utility Control: An ideal solution for reliable 125V DC monitoring and precise control applications.
- Manufacturing & Automation Processes: Provides essential accurate high-voltage signal detection crucial for complex automated lines.
- Material Handling & Logistics Systems: Guarantees reliable and isolated input for critical operational safety and efficiency.
- Critical Infrastructure Monitoring: Enhances the safety, stability, and responsiveness of vital control infrastructure.
- Oil & Gas Industry: Essential for monitoring and controlling high-voltage inputs in hazardous and remote locations.
Why Choose the 1756-IH16I?
- Unmatched Signal Integrity: With 16 individually isolated inputs, crosstalk and signal interference are virtually eliminated, guaranteeing precise data acquisition.
- Exceptional Versatility: The ability to support both sink and source configurations, coupled with a broad voltage range, makes it adaptable to nearly any high-voltage application.
- Optimized for Industrial Demands: Specifically designed for 125V DC nominal inputs, this module excels in challenging industrial environments requiring high-voltage control.
- Reliable and Efficient Operation: Its thoughtful design minimizes power dissipation while delivering consistently stable performance, leading to long-term operational savings.
- Seamless ControlLogix Integration: Enjoy effortless compatibility and rapid deployment within existing or new ControlLogix PLC systems for enhanced automation.
- Enhanced Safety Features: Individual isolation per input drastically improves system safety by preventing dangerous electrical interference and short circuits.
Availability & Shipping
- ▸In stock: 1756-IH16I ready for immediate dispatch from our Florida warehouse.
- ▸Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
- ▸Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
- ▸Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
- ▸Buy with confidence: Every 1756-IH16I ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Allen-Bradley
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New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.
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Independent Supplier Notice
PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.
Product Condition & Firmware
All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.