Allen-Bradley 1734-OW4 | POINT I/O Relay Output Module

Overview

The Allen-Bradley 1734-OW4 is a discrete POINT I/O relay output module designed for industrial automation. It features four normally open (N.O.) SPST relay contacts, supporting 5–30 VDC, 120 VAC, and 250 VAC voltages. This compact module integrates seamlessly into distributed I/O architectures, providing reliable control for machinery and process applications.

Electrical and Communication

The 1734-OW4 requires 80 mA POINTBus current and supports a power dissipation of 0.5 W with a thermal dissipation of 1.7 BTU/hr. The output transition delay from ON to OFF is 26 ms, and the initial contact resistance measures 30 mΩ. It communicates with compatible POINT I/O adapters, including Ethernet, ControlNet, and ProfiBus, allowing integration with ControlLogix, CompactLogix, and other automation controllers.

Mechanical Design and Mounting

This module mounts securely on a DIN rail and connects to terminal bases such as 1734-TB, 1734-TBS, 1734-TOP, or 1734-TOPS. It is an open-style enclosure module designed for compact installations, enabling flexible layout within control cabinets.

Environmental Specifications

The 1734-OW4 operates in temperatures from -20°C to 55°C (-4°F to 131°F) and stores safely at -40°C to 85°C (-40°F to 185°F). It supports a relative humidity range of 5–95%, non-condensing, ensuring reliable performance under various industrial conditions.

Technical Specifications

Key Features

• Provides four N.O. SPST relay outputs for flexible discrete control.

• Supports 5–30 VDC and 120–250 VAC operational voltages.

• Compact DIN rail mountable design for distributed I/O systems.

• Works with ControlLogix, CompactLogix, and any POINT I/O communication adapter.

• Low power dissipation (0.5 W) and fast ON→OFF response of 26 ms.

• Operates in a wide temperature range with high environmental tolerance.