Product Details
Product Overview
The Allen-Bradley 1734-OB4 serves as a high-efficiency discrete output interface within the POINT I/O distributed system architecture. This module provides four sourcing-type outputs to drive 24V DC field devices such as solenoids, contactors, and indicator lights. We supply this unit as 100% Brand New and Original, ensuring your automated lines benefit from factory-fresh electronic protection and the ultra-compact form factor characteristic of the POINT I/O series.
Technical Specifications
| Parameter | Specification Details |
| Number of Outputs | 4 Sourcing |
| Output Voltage | 24V DC (Nominal) |
| Output Current | 1.0 A per point (3.0 A max per module) |
| Electronic Protection | Integrated Overload and Short Circuit |
| POINTBus Current | 75 mA @ 5V DC |
| Power Dissipation | 1.2 Watts |
| Thermal Dissipation | 4.1 BTU/hr |
| Status Indicators | 4 Yellow (Output), 2 Red/Green (Module/Network) |
| Compatible Wiring Base | 1734-TB or 1734-TBS |
| Weight | 0.13 lbs (0.06 kg) |
Engineering Advantages
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Active Electronic Protection: The 1734-OB4 incorporates internal short-circuit and overload protection. This circuitry detects faults instantaneously and shuts down the affected channel to prevent hardware damage, eliminating the need for external fusing for each output.
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Granular Status Diagnostics: Six dedicated LED indicators provide rapid troubleshooting. Four yellow LEDs track individual output states, while two bi-color LEDs monitor module health and network connectivity, allowing maintenance teams to isolate faults without connecting a programming terminal.
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Space-Saving Vertical Orientation: The slim 12.5mm width maximizes DIN rail density. This design allows engineers to install high point counts in extremely narrow control cabinets, effectively solving the "space-premium" challenge in modern machine builds.
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Hot-Swap Support (RIUP): The module supports Removal and Insertion Under Power (RIUP) when used with the 1734-TB base. This allows for the replacement of modules without disrupting the communication or power of the remaining I/O on the rack, minimizing system downtime during maintenance.
FAQs
Q: What does "Sourcing Output" mean for my wiring configuration?
A: In a sourcing configuration, the 1734-OB4 supplies the +24V DC power to the load. You must connect the other side of your field device (solenoid, relay coil, etc.) to the DC common (ground).
Q: Is this 1734-OB4 unit a refurbished or surplus module?
A: No. We guarantee this unit is 100% Brand New and Original. It arrives in the original factory-sealed Allen-Bradley packaging. Using brand new modules is critical for output modules to ensure the internal power transistors have not been degraded by previous short-circuit events.
Q: Which terminal base should I use for this module?
A: You should mount the 1734-OB4 on a 1734-TB or 1734-TBS (spring clamp) wiring base assembly. The base remains permanently wired on the DIN rail, allowing the 1734-OB4 module to snap into place for easy installation and replacement.
Q: How does the electronic protection reset after a short circuit?
A: Once you remove the short circuit from the field wiring, you can reset the electronic protection by cycling the output point through the controller software or by cycling power to the module. This eliminates the manual labor associated with replacing blown physical fuses.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Mastering PLC Programming: Best Practices for Robust Industrial Automation
Writing clean PLC code requires discipline, especially regarding memory management. Avoid overusing SET and RESET instructions, as they often complicate debugging. If multiple rungs control the same bit, troubleshooting becomes a nightmare. Instead, focus on energizing a bit in only one location. If your logic requires complex conditions, use branches within a single rung. This approach keeps your code readable, maintainable, and significantly easier to audit during downtime.
PLC vs. HMI: Distinguishing the Brain from the Interface in Industrial Automation
In the realm of industrial automation, distinguishing between a Programmable Logic Controller (PLC) and a Human-Machine Interface (HMI) is fundamental. While both devices work in tandem, they serve distinct purposes. The PLC acts as the "brain" of the operation, executing logic, whereas the HMI serves as the "eyes," allowing operators to monitor and interact with the system. Understanding this synergy is essential for any professional designing robust factory automation solutions.
Selecting the Right Industrial Automation Solution for Modern Manufacturing
Choosing an effective industrial automation system starts with a thorough process audit. You must identify tasks that are repetitive, labor-intensive, or prone to human error. Not every process requires high-level automation; therefore, prioritize operations that directly impact throughput and quality. By scoping your needs accurately, you avoid over-investing in unnecessary technology. A balanced approach ensures that your capital expenditure aligns with measurable gains in operational efficiency.