Allen-Bradley 1769-IA16 Guide: Specs & Wiring
Allen-Bradley 1769-IA16 Overview
The Allen-Bradley 1769-IA16 is a discrete input module from the Compact I/O line, designed for use with CompactLogix and MicroLogix 1500 controllers. This module provides sixteen AC input channels, each operating at 100/120 VAC. It is a reliable choice for interfacing with field devices that operate in binary or ON/OFF mode, such as switches, auxiliary contacts, and sensors. Engineers value this module for its straightforward integration and robust performance in industrial environments.
Key Technical Specifications
The 1769-IA16 operates within a voltage range of 79 to 132 VAC, with a line frequency of 47 to 63 Hz. Each input channel has a 20 ms delay for both on and off states, ensuring stable signal detection. The module draws 115 mA at 5.1 VDC and dissipates a maximum of 3.3 W of heat. It features a maximum off-state voltage of 20 VAC and a maximum off-state current of 2.5 mA. During the on-state, the minimum voltage is 79 VAC, and the minimum current is 5 mA at 74 VAC.
Wiring and Installation
The 1769-IA16 includes a removable terminal block that provides connections to I/O sensors and actuators. This design simplifies wiring and maintenance. The module supports wire sizes from 22 to 14 AWG for solid wire and 22 to 16 AWG for stranded wire. It uses copper wire rated for 90 °C. The terminal block includes finger-safe covers for enhanced safety. You can mount the module on a DIN rail or panel, and its dimensions are 118 x 35 x 87 mm (4.65 x 1.38 x 3.43 in).
Compatibility and Power Requirements
This module is compatible with the 1769 CompactLogix chassis and MicroLogix 1500 controllers. In a CompactLogix system, the power supply distance rating is 8 modules. If you need more than 8 modules, you must install additional power supplies or use a separate I/O bank. Compatible power supplies include the 1769-PA2, 1769-PB2, 1769-PA4, and 1769-PB4. The module draws 1.4 A from the 24 V backplane supply.
Environmental and Physical Characteristics
The 1769-IA16 operates in temperatures from 0 to 60 °C (32 to 140 °F) and stores safely from -40 to 85 °C (-40 to 185 °F). It has an open-style enclosure rating, so it is suitable for use in control cabinets. The module weighs approximately 0.61 lb (280 g) and ships at 2 lb with packaging. Its compact design saves valuable panel space.
In summary, the Allen-Bradley 1769-IA16 offers a dependable solution for AC input sensing in industrial automation. Its clear specifications and straightforward installation make it a practical choice for engineers. For detailed wiring diagrams and setup instructions, consult the official Rockwell Automation documentation.