Allen-Bradley 1734-OB8E Digital Output Module

The Allen Bradley 1734 OB8E, also called 1734 OB8E or AB 1734-OB8E, is a digital output module. Engineers design it for industrial automation and machine control tasks.

This I/O Module is part of the POINT I/O system. It offers small, protected digital outputs for reliable and efficient operation. The 1734-OB8E Point I/O 8-Point Output Module combines performance, flexibility, and advanced diagnostics for enhanced productivity in distributed control environments.

1.General Description

The modulo 1734 OB8E has eight output channels. Each channel provides 24V DC. It also includes features to protect against overcurrent and short circuits. Its modular, space-saving design makes it ideal for use in process automation, machine control, and other industrial applications.

The Allen-Bradley 1734-OB8E POINT I/O is an 8 Point Digital Output Module. It offers strong and efficient digital DC output control. This makes it a popular choice for PLCs and machine control from Allen-Bradley.

2.How Much Power Does a 1734-OB8E Use?

Engineers designed the Allen-Bradley 1734-OB8E Ethernet-enabled Output Module for low power consumption and high efficiency. It typically draws 10 mA at 5 V DC and 95 mA at 24 V DC from the backplane.

Each of its eight sourcing outputs can supply up to 1 A per channel, with a maximum of 8 A per module. The outputs need a 24 V DC power supply. This power supply powers devices like relays, lamps, or actuators.

This efficient design reduces overall system load and enables multiple modules to operate in one network node. With its optimized power usage, the 1734-OB8E ensures reliable operation in compact or distributed I/O applications.

3.Are 1734 Modules Hot Swappable?

Yes, Allen-Bradley 1734 POINT I/O modules, including the 1734-OB8 and 1734-OB8E, are hot-swappable. This feature lets technicians add or remove modules while the system is still on. This avoids the need to shut down the entire system.

Hot swapping reduces downtime and improves flexibility during maintenance or expansion. Once you insert a new module, the POINT I/O system automatically detects and configures it. Always ensure that you disconnect field-side power before handling wiring for safety. This functionality makes Allen-Bradley 1734 modules ideal for continuous operation environments.

4.1734-OB8E vs 1734-OB8 – Difference Between 1734 OB8 and 1734 OB8E

The difference between 1734-OB8 and 1734-OB8E lies mainly in connectivity and protection. Both are POINT I/O digital output modules with eight 24V DC sourcing channels. However, the 1734-OB8E includes EtherNet/IP connectivity and electronic fusing, offering advanced diagnostics and output protection.

The 1734-OB8, by contrast, is a non-Ethernet module that requires a network adapter for communication. The OB8E allows for better real-time monitoring and fault detection. The OB8 is a more affordable choice for standard digital output control.

5.Technical Specifications of ab 1734 ob8e Digital Output Module

l Output Type: Digital DC Sourcing

l Number of Outputs: 8

l Output Voltage: 24V DC

l Output Current Rating: Up to 1A per output, maximum 3A per module

l POINTBus Current: 75 mA

l Power Dissipation: 2 Watts

l Thermal Dissipation: 6.8 BTU/hour

l Operating Temperature Range: -20 to 55°C

l 1734 OB8E Specifications: Designed for efficiency, compact form factor, and reliable digital control

l 1734 OB8E Weight: Lightweight for easy installation in control cabinets

6.Detailed Features of 1734 ob8e allen bradley Digital Output Module

l Electronically Protected Outputs: Safeguards against short circuits and overloads.

l Diagnostic Indicators: Provide real-time output signal status and fault detection.

l Easy Installation: Snap-in design enables quick setup on a DIN rail.

l Compact Modular Design: Saves space and simplifies system expansion.

l High Reliability: Engineered for industrial environments with consistent performance.

7.Applications of 1735-ob8e plcs/machine control from allen bradley

l The Allen-Bradley 1734-OB8E Output Module is ideal for:

l Industrial Automation Systems: Controlling relays, solenoids, and actuators.

l Process Control Systems: Managing continuous production equipment.

l Remote I/O Applications: Perfect for distributed and space-limited setups.

l Rockwell Automation Integration: Fully compatible with Rockwell’s Integrated Architecture for seamless system operation.

8.Installation Details for 1734-ob8e point i/o 8 point digital outp

l Mounting Base Installation:

 Attach the 1734-MB base securely to the DIN rail, ensuring alignment with adjacent modules.

l Module Insertion:

 Insert the Allen-Bradley 1734-OB8E into the mounting base and lock it in place. Verify the key switch position matches the module type.

l Wiring Connections:

 Connect field devices to the 1734-TB3S removable terminal block per wiring diagrams, ensuring secure and insulated connections.

l Power Up and Test:

 Power on the system and use diagnostic LEDs to verify output signal functionality and proper module operation.

9.Related Part Numbers for 1734-OB8E Digital Output Module

l 1734-MB: Mounting Base for POINT I/O modules

l 1734-TB3S: Removable Terminal Block with spring clamp

l 1734-RS2: Communication adapter compatible with POINT I/O modules

For more modules you are interested in, please refer to the following:

Allen-Bradley 1747-M13 EEPROM Module

Allen Bradley 1771-OG Output Module

Allen-Bradley 1794-IV16 Flex I/O Input Module Part No 96257672

Back to the top: Allen Bradley PLC