Allen-Bradley 1762-OB32T 32-Point Output Module

Allen‑Bradley 1762‑OB32T 32‑Point High‑Density Output Module

The 1762‑OB32T from Allen‑Bradley is a high‑density solid‑state output module designed for MicroLogix control systems. Specifically, it provides thirty‑two sourcing output channels organized into two isolated groups of sixteen channels each. Furthermore, this module delivers a nominal output voltage of 24V DC with a wide operating range of 10.2 to 26.4V DC. Therefore, it offers excellent flexibility for energizing indicating lights, sounding devices, solenoid actuators, and small DC motors. Additionally, the 1762‑OB32T can control AC loads when used with interposing relays.

Key Technical Specifications 1762‑OB32T

The 1762‑OB32T operates with an output voltage range of 10.2 to 26.4V DC and a nominal voltage of 24V DC. Moreover, it provides robust isolation with a rating of 1200V AC for 2 seconds or 1697V DC for 2 seconds, plus a working voltage of 75V DC based on IEC Class 2 reinforced insulation. Meanwhile, the signal delay times are specified at 0.5 ms for turn‑on and 4.0 ms for turn‑off with resistive loads. Besides these switching characteristics, the module features a maximum off‑state leakage current of 0.1 mA at 26.4V DC and an on‑state voltage drop of just 0.3V DC at 0.5 A.

Current Ratings and Thermal Performance 1762‑OB32T

The 1762‑OB32T delivers impressive current handling capabilities across multiple levels. For instance, each output point supports 0.5 A continuously at 60 °C (140 °F). Additionally, each output group handles 2.0 A continuously at the same temperature, while the entire module supports 4.0 A continuously at 60 °C (140 °F). Furthermore, the module can withstand a surge current of 2.0 A, repeatable every 2 seconds for a duration of 10 ms at 60 °C. Consequently, these ratings ensure reliable operation even with loads that experience periodic inrush currents. The minimum on‑state current is specified at 1 mA, which accommodates low‑current applications.

Installation and Mounting Guidelines

You can mount the 1762‑OB32T on a standard 35 mm DIN rail or directly onto a panel. First, ensure you maintain adequate clearance around the module for proper heat dissipation. Next, secure the module using the built‑in mounting clips. Additionally, this module requires installation inside an enclosure to prevent accidental contact and injury. Specifically, the enclosure must have flame‑retardant properties with a flame spread rating of 5VA, V2, V1, or V0 (or equivalent) if non‑metallic. Moreover, the enclosure interior must be accessible only with a tool, ensuring operator safety.

Environmental Ratings and Operating Conditions

The 1762‑OB32T is designed for use in Pollution Degree 2 industrial environments. Furthermore, it operates at altitudes up to 6562 feet (2000 meters) without derating, making it suitable for most factory installations. The module dissipates 3.4 Watts of heat, which should be factored into your panel cooling calculations. Additionally, it supports wire sizes of 22, 24, and 26 AWG, providing flexibility for different wiring schemes. Therefore, this module performs reliably across a wide range of industrial applications, from packaging lines to material handling systems.

Typical Applications

The 1762‑OB32T excels in high‑density output control scenarios. For instance, it is commonly used to drive indicator lamp panels in control rooms. Additionally, it can energize audible alarms such as horns and buzzers for machine warning systems. Furthermore, many system integrators choose this module for controlling solenoid banks in pneumatic and hydraulic systems. Meanwhile, its high channel count makes it ideal for applications where panel space is limited but many outputs are required. Consequently, the 1762‑OB32T helps you expand your MicroLogix system efficiently without adding multiple lower‑density modules.

Packaging List

• Allen‑Bradley 1762‑OB32T 32‑Point Output Module

• Removable terminal block (factory‑installed)

• Product documentation and installation guide

• DIN rail mounting clips (attached)

Shipping Information

We ship all orders via FedEx, UPS, or DHL to ensure fast and reliable delivery worldwide.

Frequently Asked Questions (FAQ)

1. Which controllers are compatible with the 1762‑OB32T?
This module works with MicroLogix 1100, 1200, and 1400 programmable controllers. However, always verify your controller's expansion capacity before installation.

2. How many output groups does the 1762‑OB32T have?
The module features two isolated output groups, each containing sixteen channels. Consequently, each group operates independently for enhanced system reliability.

3. What is the continuous current rating per channel on the 1762‑OB32T?
Each output point supports 0.5 A continuously at 60 °C (140 °F). Additionally, each group handles 2.0 A, and the entire module supports 4.0 A at the same temperature.

4. Can the 1762‑OB32T control AC loads directly?
No, this module provides DC sourcing outputs only. However, you can control AC loads by using interposing relays between the module outputs and the AC devices.

5. What is the surge current capability of the 1762‑OB32T?
The module handles a surge current of 2.0 A, repeatable every 2 seconds for 10 ms at 60 °C. Therefore, it accommodates loads with moderate inrush current characteristics.