13 in stock
Allen-Bradley 1756-IA8D ControlLogix Digital AC Input Module
Allen-Bradley 1756-IA8D ControlLogix Digital AC Input Module
Brand/Manufacturer: Allen-Bradley
Order Number: 1756-IA8D
Type: Digital Input Modules
Country of Origin: USA
Condition: Original Brand
Lead Time: Available in stock
Payment Term: 100% TT In Advance
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Description
The Allen-Bradley 1756-IA8D is a ControlLogix digital AC input module designed for industrial automation architectures. Featuring 8 diagnostic input points operating across a 79-132 VAC range, this open-style chassis-mount module delivers advanced point-level diagnostics and reliable signal processing for 120V AC applications. It utilizes a 20-pin removable terminal block to ensure secure field-side connections and seamless system integration within harsh operational environments.
Functional Overview and Diagnostics
The 1756-IA8D module provides eight diagnostic input points configured in two groups of four points each. The integrated field-side diagnostics monitor channel-level conditions, including open-wire faults and loss of power, ensuring enhanced visibility and rapid troubleshooting during operational anomalies.
Electrical and Timing Specifications
This module operates on a nominal 120V AC input voltage with an operating range of 79 to 132 VAC at 47 to 63 Hz. It features user-selectable input filter times of 1 ms or 2 ms for off-to-on transitions, and 9 ms or 18 ms for on-to-off transitions, allowing users to tune noise immunity and response speed.
Installation and Chassis Mounting
Designed for standard ControlLogix chassis mounting, the unit requires an open-style enclosure layout with proper thermal consideration for a maximum power dissipation of 4.5 W at 60 deg C. It interfaces with field wiring via compatible 20-pin removable terminal blocks such as the 1756-TBNH or 1756-TBSH.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 1756-IA8D |
| Brand | Allen-Bradley (Rockwell Automation) |
| Module Type | Digital AC Input Module with Diagnostics |
| Number of Inputs | 8 points (4 points per group) |
| Voltage Category | 120V AC |
| Operating Voltage Range | 79-132 VAC, 47-63 Hz |
| Backplane Power Consumption | 0.58 W |
| Power Dissipation, Max | 4.5 W at 60 deg C |
| Terminals | 20 Pin (Removable Terminal Block) |
| Enclosure Type | Open Style |
| Mounting Type | Chassis Mount |
| Weight | 0.50 lbs |
Frequently Asked Questions
Q: What RTB types are compatible with the 1756-IA8D module? A: The module accommodates standard 20-pin removable terminal blocks, specifically the 1756-TBNH and 1756-TBSH housing variants, to secure field-side wiring.
Q: How do the diagnostic functions detect faults? A: Point-level diagnostics monitor conditions like open wires and loss of power, transmitting status data back to the ControlLogix processor for active alarm generation and quick troubleshooting.
Q: Can this module operate in hazardous industrial locations? A: Yes, it carries cULus certification for Class I, Division 2 hazardous locations, alongside CE, RCM, and marine compliance standards when installed per specifications.
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Testimonials
Fast Delivery, Excellent Quality
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.
- Sarah Johnson
Reliable Partner for Original Parts
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.
- David Smith
Professional Service with After-Sales Support"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."
- Emily Brown
Trusted Source for Industrial Automation Spares
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson
We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.
- Michael Anderson