The Allen-Bradley 1734-OB8E, also cataloged as the 1734-OB8E POINT I/O Digital Output Module, operates as a dedicated hardware component for controlling 24 VDC discrete output signals within the Allen-Bradley POINT I/O system. The module provides eight electronically protected DC output channels through the POINTBus communication structure.

Model Identification

The 1734-OB8E is an 8-channel digital output module in the Allen-Bradley POINT I/O family. It provides a single output group containing eight sourcing DC output points with electronic protection functions for industrial control applications.

The module communicates through the POINTBus backplane interface and receives power from the POINT I/O adapter or terminal base assembly.

Hardware Specifications

POINT I/O Network Integration

The 1734-OB8E uses the Allen-Bradley POINT I/O architecture for distributed digital output control. The module exchanges output status data through the POINTBus communication interface and supports modular I/O density scaling within EtherNet/IP, ControlNet, DeviceNet, and other compatible POINT I/O adapter networks.

The POINT I/O platform uses deterministic industrial communication structures to maintain consistent data transfer between controllers, communication adapters, and field I/O modules.

Ordering Information

• 1 x Allen-Bradley 1734-OB8E POINT I/O 8 Point Digital Output Module
• 1 x Digital output module assembly
• 1 x Installation documentation reference

The POINT I/O terminal base, communication adapter, power supply, and mounting accessories are not included unless specified separately.

Field Installation Guidelines

Module Mounting

• Install the module on a compatible 1734 POINT I/O terminal base assembly.
• Verify correct module alignment before applying insertion force.
• Mount the assembly inside a suitable industrial enclosure.

Wiring Connection

• Use wiring suitable for the 10-28.8 VDC output range.
• Separate output wiring from high voltage AC conductors to reduce electrical interference.
• Confirm load current remains within the module output rating.

Protection and Grounding

• Verify the connected load does not exceed the specified surge current capability.
• Use appropriate cabinet grounding practices for the control system.
• Confirm the POINTBus power supply capacity before adding additional modules.

Frequently Asked Questions

• How many output channels are available on the 1734-OB8E?

The module provides eight digital DC output channels arranged as one group containing eight outputs.

• What output voltage range does the module support?

The 1734-OB8E supports a 10-28.8 VDC output signal range with a nominal 24 VDC operating voltage.

• Does the module include electronic protection?

Yes. The module includes electronic protection for its output channels.

• What is the POINTBus current requirement?

The module requires 75 mA POINTBus current from the POINT I/O backplane system.

• What is the maximum output current capability?

The module supports up to 3 A total output current per module according to the supplied specifications.

• Can the module handle temporary surge current?

Yes. The module supports 2 A surge current for 10 ms with repeat operation every 3 seconds.

• Which communication system does the module use?

The module communicates through the Allen-Bradley POINTBus interface within the POINT I/O platform.

• Is the 1734-OB8E hot-swappable?

Hot-swap operation is dependent on the installed POINT I/O adapter and system configuration. Follow the controller and adapter specifications before replacement.