Product Overview

The Allen-Bradley 1734-OB8E provides high-density discrete output control in a compact POINT I/O form factor. This Series C module features eight sourcing 24V DC outputs, specifically designed for driving solenoids, actuators, and motor starters. Unlike standard modules, the "E" designation signifies Electronic Protection, allowing the module to detect and survive short-circuit conditions without damaging internal circuitry or requiring external fuses. We supply this unit as 100% Brand New and Original, ensuring your distributed control architecture benefits from the latest hardware revisions and diagnostic capabilities.

Technical Specifications

Engineering Advantages

• Self-Healing Electronic Protection: The 1734-OB8E monitors each channel for overcurrent and short-circuit events. If a fault occurs, the module automatically shuts down the affected channel to prevent hardware failure, then attempts to restart once the fault clears. This eliminates the need for manual fuse replacement in inaccessible remote enclosures.

• Space-Efficient Distributed Control: The narrow footprint of the POINT I/O system allows the 1734-OB8E to mount in tight terminal boxes or on machine-mounted skids. This proximity to field devices reduces long cable runs and minimizes electromagnetic interference (EMI).

• Granular Diagnostic Feedback: Individual channel status LEDs instantly identify failed field wiring or shorted actuators. This visual feedback, combined with backplane diagnostics, significantly reduces Mean Time to Repair (MTTR) by pinpointing the exact location of the electrical fault.

• High Current Sourcing Capability: Despite its small size, each point sources up to 1.0 Amp. This allows the module to drive larger industrial loads and pilot devices directly, often removing the requirement for intermediate interposing relays.

FAQs

What is the difference between the 1734-OB8 and the 1734-OB8E?

The 1734-OB8 is a standard sourcing output module without specialized diagnostics. The 1734-OB8E adds Electronic Protection. It can detect short circuits and overloads at the channel level, providing enhanced system protection and diagnostic messaging to the PLC that the standard version lacks.

Does the 1734-OB8E require a specific terminal base?

The module is compatible with standard POINT I/O terminal bases, such as the 1734-TB or 1734-TBS. The terminal base facilitates the field wiring and the connection to the POINTBus backplane.

Can I mix Series C modules with older Series A or B hardware?

Yes. Series C modules maintain backward compatibility with previous Series A and B terminal bases and adapters. However, ensure your controller's electronic keying settings in Studio 5000/RSLogix 5000 allow for the Series C revision to ensure seamless communication.

How do I reset a channel after a short circuit occurs?

The electronic protection is typically self-resetting once the overload condition is removed. In some software configurations, you may also toggle the output bit or send a reset command via the controller to clear the diagnostic latch.