Allen-Bradley 1734-OB4E Point I/O 4-Point Digital Output Module

Description

The 1734-OB4E is a 24V DC 4-channel sourcing digital output module designed for use within the Allen-Bradley POINT I/O system. The 1734-OB4E features 4 non-isolated, electronically protected outputs organized into a single group. Operating on a nominal 24V DC external power supply, the module provides short circuit and overload protection for connected field loads. The module interfaces across industrial networks using DeviceNet, PROFIBUS, ControlNet, or EtherNet/IP adapters, making it suitable for distributed I/O applications controlling field devices such as solenoids, relays, and indicators.

Features

• 4 non-isolated sourcing digital output channels in one group
• Electronically protected outputs for short circuit and overload conditions
• Keyswitch position 1 for mechanical keying on compatible terminal bases
• Logic-driven status indicators including 4 yellow output status LEDs, 4 red output fault LEDs, and 2 green/red module/network status LEDs
• Removable terminal block (RTB) support allowing module replacement without disturbing field wiring

Applications

• Distributed I/O processing on DeviceNet and PROFIBUS networks
• Control system expansion via EtherNet/IP and ControlNet adapters
• Switching 24V DC industrial loads including actuators, relays, and solenoids
• Class I Division 2, Zone 2 hazardous location installations

Technical Specifications

Connections/Interfaces

Installation Guidelines

• DIN Rail Grounding: Ground the module through the DIN rail to chassis ground using zinc-plated chromate-passivated steel DIN rail (Allen-Bradley part number 199-DR1; 46277-3; EN50022). Secure the DIN rail to the mounting surface approximately every 200 mm (7.8 in.) and use end-anchors properly.
• Enclosure Requirement: Mount the module inside a Pollution Degree 2 industrial enclosure that meets overvoltage Category II applications. Enclosures must require a tool for interior access.
• Keyswitch Setting: Set the orange keyswitch on the mounting base to position 1 by rotating clockwise with a bladed screwdriver prior to inserting the module.
• Module Insertion: Ensure the DIN rail locking screw is in the horizontal position before inserting the module straight down into the mounting base until it locks.
• Hazardous Area Safety: Remove power or ensure the area is nonhazardous before inserting or removing the module or connecting/disconnecting the removable terminal block (RTB) or wiring.
• Wiring Limits: Do not wire more than two conductors on any single terminal.

Compliance and Certifications

• c-UL-us (UL Listed Industrial Control Equipment File E65584; UL Listed for Class I Division 2 Group A,B,C,D Hazardous Locations File E194810)
• UK and CE (EMC Directive 2014/30/EU, EN 61326-1, EN 61000-6-2, EN 61000-6-4, EN 61131-2; RoHS Directive 2011/65/EU, EN IEC 63000)
• RCM (EN 61000-6-4)
• Ex (ATEX Directive 2014/34/EU, EN IEC 60079-0, EN IEC 60079-7, II 3G Ex nA IIC T4 Gc, DEMKO 04 ATEX 0330347X, UL22UKEX2478X)
• KC (Article 58-2 of Radio Waves Act, Clause 3)
• IECEx (IEC 60079-0, IEC 60079-7, Ex ec IIC T4 Gc, IECEx UL 20.0072X)
• Morocco (Arrêté ministériel nº 6404-15)
• CCC (CNCA-C23-01 CCC: 2020122309111607)