Allen-Bradley 1769-IA16 16-Channel AC Input Module

The Allen-Bradley 1769-IA16 is a reliable discrete AC input module. It belongs to the 1769 Compact I/O product family. This module works seamlessly with CompactLogix and MicroLogix 1500 controllers. You can use it to read status from switches, sensors, and auxiliary contacts. It handles standard 120V AC industrial signals with ease.

Technical Specifications of the 1769-IA16

The 1769-IA16 provides sixteen (16) AC input channels. All channels form a single group with internally connected commons. The voltage category is 100 to 120V AC. The operating voltage range spans 79 to 132V AC. Input frequency operates between 47 and 63 Hz. This covers most industrial power systems worldwide.

On-State and Off-State Characteristics

For the on-state, the 1769-IA16 requires a minimum voltage of 79V AC. The minimum on-state current is 5 mA at 74V AC. The maximum on-state current reaches 12 mA at 120V AC. For the off-state, the maximum voltage is 20V AC. The maximum off-state current is only 2.5 mA. The maximum inrush current is 250 mA.

Input Delay and Impedance Details

The 1769-IA16 has a fixed input delay of 20 ms for both on and off states. This predictable delay helps with timing-sensitive applications. The maximum input impedance is 12 kΩ at 50 Hz. At 60 Hz, the maximum impedance is 10 kΩ. These values ensure proper signal detection across different line frequencies.

Power and Environmental Ratings

This module draws 115 mA at 5.1V DC from the backplane. The heat dissipation is 3.3 Watts maximum. Thermal dissipation equals 2.7 BTU per hour. Power consumption reaches 33.6 Watts. The operating temperature ranges from 0°C to 60°C. Storage temperature spans -40°C to 85°C. The enclosure type is open style for panel mounting.

Compatibility and Installation Guidelines

The 1769-IA16 is compatible with 1769 CompactLogix controllers. It also works with MicroLogix 1500 systems. The power supply distance rating is 8 modules. Do not install this module more than 8 slots from the power supply. Compatible power supplies include 1769-PA2, 1769-PB2, 1769-PA4, and 1769-PB4. You can mount the module on a DIN rail or a panel. Use copper wire rated for 90°C. Solid wire size should be 22-14 AWG. Stranded wire size should be 22-16 AWG.

Module Dimensions and Weight

The 1769-IA16 measures 118 mm in height without tabs. Width is 35 mm. Depth is 87 mm. In inches, dimensions are 4.65 x 1.38 x 3.43 inches. Height increases to 138 mm (5.43 inches) with mounting tabs. The module weighs approximately 0.61 pounds or 280 grams. This compact size saves valuable panel space.

Package Contents

• One (1) Allen-Bradley 1769-IA16 discrete AC input module

• One (1) removable terminal block with finger-safe covers

• Product installation and wiring guide

Common FAQs for the 1769-IA16

1. What field devices can connect to the 1769-IA16?
The 1769-IA16 connects to AC switches, limit switches, proximity sensors, and auxiliary contacts. Any device that outputs 79-132V AC signals works with this module.

2. Does the 1769-IA16 have optically isolated channels?
Yes, the 1769-IA16 features optically isolated digital and field circuits. However, all 16 channels share a common internal connection. This forms a single group.

3. What happens if I exceed the power supply distance rating?
If you exceed 8 modules, the 1769-IA16 may not receive proper backplane power. You must add another power supply or create a new I/O bank for additional modules.

4. Can I use the 1769-IA16 with a MicroLogix 1500 base unit?
Yes, the 1769-IA16 works perfectly with MicroLogix 1500 controllers. Install it directly after the base module or next to any adjacent module.

5. What is the maximum inrush current for this module?
The 1769-IA16 has a maximum inrush current of 250 mA. This occurs briefly when the input channel first turns on. The steady-state current is much lower.

Why Choose the Allen-Bradley 1769-IA16?

This module delivers reliable AC input detection for industrial automation. Its 16 channels provide high density in a compact package. The 20 ms delay time offers consistent and predictable performance. Built-in optical isolation protects your controller from field noise. Order the 1769-IA16 today to expand your CompactLogix I/O system with AC inputs.