Product Details
Product Description
The Allen-Bradley 1756-IA32 is a 32-point AC input module designed for use with the ControlLogix platform, providing reliable digital signal interfacing for industrial control systems. This module accepts 120V AC input signals and offers high isolation integrity between input groups, making it ideal for applications requiring dependable AC signal monitoring in automation environments.
Technical Specifications
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Model Number: 1756-IA32
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Manufacturer: Allen-Bradley (Rockwell Automation)
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Product Series: ControlLogix
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Product Type: AC Input Module
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Input Points: 32 (organized as two groups of 16 channels each)
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Voltage Category: 120V AC, 50/60 Hz
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Nominal Input Voltage: 120V AC
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Operating Voltage Range: 74…132V AC, 47…63 Hz
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Maximum Power Dissipation: 6.1 W @ 60°C (140°F)
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Isolation Voltage:
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250V (continuous) — basic insulation, inputs to backplane
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125V (continuous) — basic insulation, between input groups
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No isolation between individual inputs within a group
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Signal Delay (On/Off): Typically 10–20 ms
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Backplane Current: 120 mA @ 5.1V DC, 3 mA @ 24V DC
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Input Thresholds:
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Off-State Voltage (max): 42V AC
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On-State Voltage (min): 74V AC
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On-State Current (nominal): 12 mA
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Operating Temperature: 0°C to +60°C (32°F to 140°F)
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Storage Temperature: -40°C to +85°C (-40°F to 185°F)
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Relative Humidity: 5–95% non-condensing
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Mounting: ControlLogix chassis
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Shipping Weight: 1.5 kg (3.3 lb)
Key Features
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High-density 32-point AC input design for compact control systems
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Dual-group isolation for improved safety and fault containment
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Supports 120V AC operation with wide frequency tolerance (47–63 Hz)
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Compatible with all standard ControlLogix chassis and power supplies
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Ideal for monitoring contactors, pushbuttons, and limit switches in industrial systems
Application Scenarios
The 1756-IA32 is widely used in process and discrete automation systems, where reliable AC signal interfacing is required. It is suitable for:
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Factory automation and machine control systems
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Power generation and distribution monitoring
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Material handling and packaging machinery
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HVAC and building control systems
FAQ
Q1: Can the 1756-IA32 be mixed with DC input modules in the same chassis?
A1: Yes. The ControlLogix platform supports mixed module types within a single chassis as long as power and grounding requirements are met.
Q2: What are the recommended terminal blocks for wiring?
A2: The module supports removable terminal blocks (RTBs) such as 1756-TBCH or 1756-TBNH, sold separately.
Q3: Does this module provide diagnostic feedback?
A3: The 1756-IA32 includes LED indicators for each channel to display input status during operation.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Redundant Automation Systems: Ensuring Continuous Uptime in Critical Control Infrastructure
System reliability directly determines operational profitability across high stakes process industries. Modern industrial automation platforms must eliminate single points of failure to prevent catastrophic shutdowns. Deploying fault tolerant architecture safeguards complex facilities against unexpected hardware glitches, network disruptions, and maintenance outages.
Understanding Types of Noise in Electronic Circuits and Control Systems
Signal integrity directly determines measurement accuracy and loop stability across industrial automation environments. Electronic noise introduces unwanted stochastic interference into analog loops, sensor feedback lines, and digital fieldbus networks. Understanding how intrinsic electronic noise and external electromagnetic interference manifest allows control engineers to optimize signal conditioning and shield sensitive instrumentation effectively.
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.