1746-IA8 SLC 500 Digital AC Input Module by Allen-Bradley

Product Overview

The Allen-Bradley 1746-IA8 is a digital AC input module. It belongs to the SLC 500 series. This module has 8 input channels. It works with voltages from 85 to 132 Volts AC. The module draws 50 milliamps from the backplane at 5 Volts DC. It uses a 1-slot design. The module weighs 0.23 kg. Its dimensions are 5 x 2 x 6 inches. This module is a key part of many control systems.

Application Scenarios

This module is for general-purpose input tasks. It reads AC signals from field devices. These devices include limit switches and push buttons. It works well in factory automation. It is also used in material handling systems. The module can handle machine control tasks. It provides reliable signal detection for your PLC.

Technical Specifications

The 1746-IA8 has a voltage rating of 100-120V AC. Its operating frequency is 47 to 63 Hz. The nominal input current is 12 mA at 120V AC. The off-state current is a maximum of 2 milliamps. The signal on delay is 35 milliseconds. The signal off delay is 45 milliseconds. The step response is 100 ms in and 2.5 ms out. The maximum inrush current is 0.8 A for 0.5 ms. The isolation voltage is 500V DC for communication. It is 1500V AC for the backplane. The thermal dissipation is 2.4 Watts maximum. The operating temperature range is 32 to 140 degrees Fahrenheit.

Installation & Maintenance Guide

Install this module into a single slot of the SLC 500 chassis. Use the 1746-HT or 1746-HCA I/O connection cables. Ensure the backplane power is off before insertion. Tighten the module screws to secure it. Keep the enclosure free of dust and debris. Check the module status display for proper operation. Do not exceed the specified voltage or current limits. The module has an open-style enclosure for heat dissipation.

Packing List

The package includes one Allen-Bradley 1746-IA8 module. It also includes a printed manual. The module is packed in anti-static material. Shipping is via FedEx, UPS, or DHL.