Allen-Bradley 1756-IA8D AC Input Module

Series#: AllenBradley

Product Details

1756-IA8D Allen-Bradley ControlLogix AC Input Module – 8-point, 120V AC isolated input solution for robust industrial automation.
High-density 8-point design reduces panel space while maintaining individual channel isolation for noise immunity.
Supports 120V AC input voltage range (85-132V AC) with field-side isolation up to 2500V DC for harsh environments.
Compatible with all ControlLogix chassis (1756-A4, A7, A10, A13, A17) and redundant systems for mission-critical applications.
On-board LED diagnostics per channel for quick troubleshooting, reducing downtime in production lines.
Removable terminal block (RTB) design simplifies wiring and maintenance without disconnecting field wiring.
100% Genuine and New, rigorously inspected before international dispatch.

Specification

The Allen-Bradley 1756-IA8D is a high-performance 8-point AC input module designed for the ControlLogix platform, offering isolated inputs at 120V AC for reliable signal acquisition in factory automation, process control, and heavy machinery. This module ensures noise-free operation in electrically noisy environments with opto-isolation per channel, supporting up to 2500V DC of field-to-backplane isolation. Ideal for applications requiring discrete input monitoring from limit switches, pushbuttons, and proximity sensors, the 1756-IA8D integrates seamlessly into both standard and redundant ControlLogix systems, providing real-time status via LEDs and seamless communication with the controller over the backplane. Its rugged design complies with industrial standards for vibration, shock, and temperature extremes, making it a trusted choice for global manufacturing facilities.

Specification	Details
Product Name	ControlLogix AC Input Module
Model Number	1756-IA8D
Input Points	8 (isolated per channel)
Input Voltage Rating	120V AC (85-132V AC operational range)
Input Frequency	47-63 Hz
Input Current (per point)	Typical 10 mA Standard Models 120V AC
Off-State Voltage	Maximum 20V AC
On-State Current	Minimum 5 mA
Isolation Voltage	2500V DC (field to backplane), 1500V AC (channel to channel)
Backplane Current (5V DC)	175 mA
Backplane Current (24V DC)	0 mA (no 24V required)
Power Dissipation	2.5 W (maximum)
Thermal Dissipation	8.5 BTU/hr
Indicators	Green LED per channel for input status; module status LED (OK)
Terminal Type	Removable Terminal Block (RTB) with screw clamp connections
Wire Size	14-22 AWG (stranded or solid)
Operating Temperature	0°C to +60°C (32°F to 140°F)
Storage Temperature	-40°C to +85°C (-40°F to 185°F)
Relative Humidity	5% to 95% non-condensing
Vibration	5 g Standard Models 10-500 Hz (operating)
Shock	30 g (operating), 50 g (non-operating)
Certifications	UL, cUL, CE, ATEX (Zone 2), CSA, IECEx (when used with appropriate barriers)
Dimensions (H x W x D)	144 mm x 35 mm x 105 mm (5.67 in x 1.38 in x 4.13 in)
Weight	Approximately 0.25 kg (0.55 lb)
Compatible Chassis	1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 (all ControlLogix chassis)
Redundancy Support	Yes, compatible with redundant ControlLogix systems
Warranty	Standard 1-year warranty (extended options available)