1769-IQ32T Allen-Bradley 24VDC 32-Point High-Density DI Module

Product Overview

The Allen-Bradley 1769-IQ32T is a high-density digital input module designed for CompactLogix and MicroLogix 1500 systems. Providing 32 discrete 24V DC input channels in a single compact width, this module is an essential solution for applications requiring extensive I/O capacity within limited panel space. It features four isolated groups of eight inputs each, allowing for versatile field device integration. The module comes equipped with a 40-pin 1746-N3 connector, ensuring clean, professional wiring and simplified maintenance for high-point-count automation projects.

Technical Configuration

The 1769-IQ32T is engineered for flexible system architecture and robust performance:

• Channel Density: 32 digital inputs grouped into 4 isolated sets for signal separation.
• Input Voltage: Operates at a nominal 24V DC (range of 10-30V DC).
• Wiring Versatility: Supports both sinking and sourcing configurations to match various sensor types.
• Hardware Interface: Utilizes a high-density 40-pin connector (included) for secure field terminations.
• System Integration: Compatible with 1769 Compact I/O bus, supporting up to 8 modules depending on the power supply.

Technical Specifications

Installation Guide

The 1769-IQ32T can be mounted on a standard DIN rail or directly to a panel. Use the integrated bus lever to securely lock the module into the Compact I/O backplane.

Wiring Best Practices

For sinking configurations, connect the DC common to the COM terminal; for sourcing, connect V+ to the COM terminal. Due to the high-density 40-pin connector, we recommend using 22-16 AWG stranded wire for optimal flexibility. Ensure that terminal labels are correctly applied to the 1746-N3 connector for easy identification during future troubleshooting. To maintain the 60°C temperature rating, verify that the module is within the power supply distance rating (typically 8 modules).

Engineering Advantages

With a net weight of 0.28 kg, the 1769-IQ32T offers significant space savings without compromising electrical isolation. By grouping 32 inputs into four isolated banks, engineers can mix different power sources or signal grounds within a single module, reducing the overall number of modules required. The inclusion of the 40-pin connector protector and write-on labels streamlines the commissioning process, while the IP20 rated housing ensures durability within a standard industrial enclosure.

Technical FAQs

Q1: Can I use this module with a MicroLogix 1500 controller?
A1: Yes, the 1769-IQ32T is fully compatible as an expansion I/O module for the MicroLogix 1500 platform.

Q2: Does this module require a separate power supply?
A2: No, it draws its 5V and 24V DC bus power from the 1769-PA2/PB2 or PA4/PB4 power supply via the backplane, though field-side power for the inputs must be provided.

Q3: What happens if the temperature exceeds 60°C?
A3: The input voltage range derates at high temperatures. Always ensure adequate ventilation and clearance as specified in the Compact I/O user manual.