Product Summary
The Allen-Bradley 1762-OB32T is a high-density solid-state output module for MicroLogix controllers. It delivers 32 channels in two isolated groups of 16. This module provides a nominal 24VDC output and handles 0.5A per channel. It controls DC loads like solenoid valves and indicator lights.
Expert Technical Evaluation & Performance Review
Engineers require reliable control for demanding industrial applications. The 1762-OB32T delivers this with its robust solid-state design. It switches loads with a fast 0.5 ms turn-on delay. The turn-off delay for resistive loads is just 4.0 ms. This speed ensures precise actuation for high-speed machinery.
The module’s electrical isolation is a critical performance feature. It provides 1200V AC isolation for 2 seconds between groups. This protects the controller from damaging voltage transients. The working voltage is 75V DC per IEC Class 2 standards. This design prevents ground loops and enhances system stability.
Current handling capabilities define the module’s application scope. Each channel sources a continuous 0.5 A at 60 °C. Each group of 16 channels handles up to 2.0 A. The entire module supports a maximum of 4.0 A. This allows it to drive multiple small motors and actuators.
The 1762-OB32T also manages inrush currents effectively. It supports a surge current of 2.0 A for 10 milliseconds. This surge is repeatable every 2 seconds at 60 °C. This capability handles the start-up load of solenoid devices. It ensures reliable operation without nuisance fuse blowing.
Environmental tolerances confirm its suitability for harsh factories. It operates in Pollution Degree 2 environments without issues. It works at altitudes up to 6562 feet without derating. The module dissipates only 3.4 Watts of heat. This low heat output reduces thermal stress inside the control panel.
Product Procurement & Buyer Guide
Procurement teams must verify critical specifications before purchasing. The 1762-OB32T is a source output module for DC loads. It requires a 24V DC input power supply for operation. The operating voltage range is 10.2 to 26.4V DC. This wide range ensures stable operation with fluctuating power.
Installation requires specific wiring and mounting considerations. The module accepts wire sizes 22, 24, and 26 AWG. This flexibility simplifies integration with existing field wiring. You must mount it in a flame-retardant enclosure. The enclosure must have a 5VA, V2, V1, or V0 rating. This prevents fire spread and protects personnel.
This module solves key pain points for system designers. It offers 32 outputs in a single compact unit. This saves valuable space in the control cabinet. The two isolated groups allow mixing of different voltage circuits. This reduces the need for external isolation relays.
The part number for this module is 1762-OB32T. The manufacturer is Rockwell Automation under the Allen-Bradley brand. It belongs to the MicroLogix series of controllers. This compatibility ensures seamless integration with existing systems. The module’s UPC is 10612598849922 for easy inventory tracking.
Deep-Dive Technical FAQ
What is the minimum load current for the 1762-OB32T?
The minimum On-state current is 1 mA per channel. This ensures reliable switching for very light loads. You must verify your load meets this requirement.
What is the Off-state leakage current specification?
The maximum Off-state leakage current is 0.1 mA at 26.4V DC. This very low leakage prevents accidental activation of sensitive loads. It is critical for safety circuits and high-impedance devices.
Can this module switch AC loads directly?
No, this is a DC source output module. You must use interposing relays for AC loads. The module energizes the relay coil, and the relay switches the AC circuit. This protects the solid-state outputs from AC voltage stress.
What is the On-state voltage drop across the output?
The On-state voltage drop is 0.3V DC at 0.5 A. This low drop minimizes power loss and heat generation. It ensures maximum voltage reaches the connected load.
Logistics & Standard Packaging Details
- One (1) Allen-Bradley 1762-OB32T output module
- One (1) removable terminal block for wiring
- One (1) installation and user manual guide
- Express shipping is available via FedEx, UPS, and DHL.
