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

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

Product Introduction

The 1769-IA16 module gives you sixteen AC input channels for your CompactLogix system. Allen-Bradley designed this unit to read binary signals from field devices. You can connect switches, sensors, relays, and auxiliary contacts directly to this module. It works perfectly with both 1769 CompactLogix controllers and MicroLogix 1500 systems.

Furthermore, this input module operates on standard 100/120 VAC power. Its voltage range spans from 79 to 132 VAC, which handles typical line fluctuations. The operating frequency covers 47 to 63 Hz, making it suitable for most industrial power grids. Each channel delivers reliable performance with a fixed 20 ms delay for both on and off transitions.

Technical Specifications

Here are the complete electrical ratings for the 1769-IA16:

• Manufacturer: Allen-Bradley

• Part Number: 1769-IA16

• Product Line: CompactLogix

• Number of Inputs: 16 channels (single group, internally connected commons)

• Input Type: AC Digital Input

• Voltage Category: 100-120 VAC

• Operating Voltage Range: 79 to 132 VAC

• Input Frequency: 47 to 63 Hz

• On-State Voltage (min): 79 VAC

• Off-State Voltage (max): 20 VAC

• On-State Current (min): 5 mA at 74 VAC

• On-State Current (max): 12 mA at 120 VAC

• Off-State Current (max): 2.5 mA

• Maximum Inrush Current: 250 mA

• Input Impedance: 12 kOhm at 50 Hz / 10 kOhm at 60 Hz

• Input Delay (On): 20 ms

• Input Delay (Off): 20 ms

Additionally, the module draws 115 mA at 5.1V DC from the backplane. Its heat dissipation reaches 3.3 Watts, with thermal dissipation of just 2.7 BTU/hour. Total power consumption is 33.6 Watts, while power dissipation sits at 7.5 Watts.

Physical and Mechanical Specifications

The 1769-IA16 comes in a compact, rugged housing:

• Dimensions (HxWxD): 118 x 35 x 87 mm (4.65 x 1.38 x 3.43 in.)

• Height with mounting tabs: 138 mm (5.43 in.)

• Slot width: 1

• Weight: 0.61 lbs (280 grams)

• Enclosure Type: Open style

• Wire size: 22-14 AWG solid or 22-16 AWG stranded

• Wire type: Copper, 90°C (194°F) rated

• Terminal block: Removable with finger-safe covers

Environmental Ratings

The 1769-IA16 handles demanding industrial conditions with ease:

• Operating Temperature: 0 to 60°C (32 to 140°F)

• Storage Temperature: -40 to 85°C (-40 to 185°F)

• Relative Humidity: 5-95% noncondensing

• Vibration: 5 g at 10-500 Hz

• Operating Shock (DIN rail): 20 g

• Operating Shock (panel): 20 g

• Non-operating Shock (DIN rail): 30 g

• Non-operating Shock (panel): 40 g

Power Supply Distance and Compatibility

The 1769-IA16 has a power supply distance rating of 8 modules. This means you can install up to eight modules away from the power supply. For systems needing more than eight modules, you must add another power supply.

Compatible power supplies for the 1769-IA16 include:

• 1769-PA2

• 1769-PB2

• 1769-PA4

• 1769-PB4

This module works with two controller families:

• 1769 CompactLogix controllers

• MicroLogix 1500 controllers

Installation Guidelines

Follow these steps to install your 1769-IA16 module:

1. Power down the entire system before starting any installation.

2. Mount the module on a DIN rail or panel using the integrated tabs.

3. Slide the bus connector to engage with the adjacent module.

4. Secure the module by tightening the mounting screws (panel mount) or locking the DIN rail clip.

5. Insert the removable terminal block into the front of the module.

6. Connect your field wires following the terminal labels (22-14 AWG solid or 22-16 AWG stranded).

7. Apply power and verify communication with your controller.

Moreover, always observe the power supply distance rule. Do not place the 1769-IA16 beyond the 8-module limit without an additional power supply. The removable terminal block makes wiring changes simple and safe.

Special Features

The 1769-IA16 includes several notable design advantages:

• Electronic protection against overcurrent conditions

• Optically isolated digital and field circuits for noise immunity

• Patented bus connector for reliable backplane communication

• Finger-safe terminal covers for operator protection

• Removable terminal block for easy maintenance

Packaging List

Your shipment includes the following items:

• 1 x 1769-IA16 16-Channel AC Input Module

• 1 x Removable terminal block (installed)

• 1 x DIN rail mounting clip (attached)

• 2 x Panel mounting screws

Note: No certificates or warranty documents are included in the box.

Shipping Information

We ship all orders via FedEx, UPS, or DHL. Please allow 1-2 business days for processing.

Frequently Asked Questions (FAQ)

1. Can I use the 1769-IA16 with a MicroLogix 1500 controller?
Yes, the 1769-IA16 works perfectly with MicroLogix 1500 systems. Simply install it next to the base module or any adjacent module.

2. What happens if I exceed the 8-module power supply distance?
You will need an additional power supply for modules beyond the eighth position. Otherwise, the 1769-IA16 may not receive sufficient power.

3. Does this module support 220 VAC input?
No, the 1769-IA16 only accepts 79-132 VAC. For 220 VAC applications, please consider the 1769-IA8I or other high-voltage models.

4. How do I know if an input channel is working?
Each channel has a built-in LED indicator on the front panel. The LED lights up when the channel detects an on-state voltage above 79 VAC.

5. What wire size should I use for field connections?
Use 22-14 AWG solid copper wire or 22-16 AWG stranded copper wire. All wires must be rated for 90°C (194°F) minimum.