Allen-Bradley 1734-OB2EP Digital DC Sourcing Output Module

Configured for digital DC load switching in POINT I/O backplane systems, the Allen-Bradley 1734-OB2EP (1734-OB2EP Digital DC Sourcing Output Module) provides direct electrical execution. The module features two electronically protected sourcing output channels operating at a nominal 24 VDC output level. Each channel sources positive voltage relative to the DC return, with the two outputs sharing a common non-isolated architecture.

Suffix Breakdown & Model Matrix

The supplied documentation identifies a single catalog number: 1734-OB2EP. No official suffix variants or ordering matrix information are provided in the available source material.

Hardware Specifications

EtherNet/IP and POINTBus Backplane Communication Characteristics

Within the POINT I/O architecture, the 1734-OB2EP exchanges output state data through the POINTBus backplane. The module's compact 2-point configuration supports I/O density scaling without requiring dedicated field wiring changes to adjacent modules. Firmware compatibility should always be verified against the installed POINT I/O adapter and controller revision before commissioning or replacement activities. The module draws 75 mA from the POINTBus while executing output commands received through the system's deterministic control network infrastructure.

Frequently Asked Questions

Q: Are the two output channels galvanically isolated from each other?
A: No. The two sourcing output channels share a common internal design and are not isolated from each other.

Q: What protection method is provided for the outputs?
A: The module incorporates electronic output protection intended to protect the output circuitry during fault conditions associated with the connected load.

Q: Can the module switch loads directly at 24 VDC?
A: Yes. The module provides a nominal output voltage of 24 VDC and operates across an output voltage range of 10 to 28.8 VDC, subject to system power supply and load requirements.

Field Installation Guidelines

• Verify that field supply voltage remains within the specified 10 to 28.8 VDC operating range before energizing loads.

• Install the module on a properly secured DIN rail according to POINT I/O system assembly practices.

• Route output wiring separately from high-energy motor and drive cables to minimize conducted electrical noise.

• Terminate DC return conductors according to the system wiring drawings and maintain consistent polarity throughout the installation.

• Confirm total connected load current does not exceed 2 A per output channel or 4 A per module.

• De-energize field circuits before wiring changes, module replacement, or maintenance activities.

• Ensure protective earth and panel grounding practices comply with site electrical standards.