Product Details
Product Overview
The Allen-Bradley 1734-OW2 serves as a high-density, electromechanical relay output solution within the POINT I/O 1734 family. This module integrates two independent Form A (Normally Open) relays, allowing the control of various AC and DC loads in a distributed I/O architecture. We provide this component as 100% Brand New original factory stock. It bridges the gap between low-level PLC logic and high-power field devices like motor starters, solenoid valves, and indicators while minimizing panel space.
Technical Specifications
| Feature | Specification |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Line | POINT I/O 1734 |
| Outputs | 2 Normally Open (Form A) Relays |
| Contact Current Rating | 2.0 A per channel (Maximum) |
| Isolation Voltage | 250V (Continuous) |
| Backplane Current | 80 mA @ 5V DC |
| Power Dissipation | 0.5 W (Maximum) |
| Contact Life | ≥ 100,000 operations @ rated load |
| Switching Frequency | 1 operation per 3 seconds (0.3 Hz max) |
| Wire Size | 22–14 AWG (0.25–2.5 mm²) Copper |
| Operating Temperature | -20°C to 55°C (-4°F to 131°F) |
Engineering Advantages
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Optimized for Mixed Loads: The 1734-OW2 handles both AC and DC voltages up to 240V AC or 125V DC. This flexibility eliminates the need for separate interposing relays when controlling diverse field equipment, significantly reducing system complexity.
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Granular Scalability: The "POINT" architecture allows users to add precisely two relay points per module. This prevents the "over-provisioning" of I/O commonly seen with 8 or 16-point cards, lowering the overall cost-per-point in small-scale automation skids.
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Robust Galvanic Isolation: 250V continuous isolation protects the sensitive backplane electronics from field-side voltage spikes and electrical noise. This barrier ensures that a catastrophic failure on the load side does not propagate to the PLC processor.
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Rapid Maintenance Architecture: The module utilizes a "T-Base" terminal system (sold separately), which allows for "Removal and Insertion Under Power" (RIUP). Maintenance teams can swap a 1734-OW2 module without disturbing the field wiring or shutting down the entire I/O rack.
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Extreme Cold Start Capability: Unlike standard commercial electronics, the 1734-OW2 operates down to -20°C. This makes it suitable for unheated enclosures in outdoor applications or cold storage facilities.
FAQs
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Can I use the 1734-OW2 for high-speed switching applications?
No. The electromechanical design limits the switching frequency to 0.3 Hz (one operation every three seconds) at rated load. For high-speed PWM or rapid cycling, utilize a solid-state output module like the 1734-OB8.
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Does this module require a specific terminal base?
Yes. You must install the 1734-OW2 on a 1734-TB or 1734-TBS terminal base. The base provides the mechanical connection to the DIN rail and the electrical interface to the POINTBus.
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How do I verify the contact health?
The module includes a status LED for each output. If the LED illuminates but the field device does not activate, check the external fuse or the continuity of the electromechanical contact using a multimeter during a maintenance cycle.
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Is this a factory-sealed unit?
Absolutely. We ship only 100% Brand New units in original Allen-Bradley boxes with intact serial numbers and factory documentation to ensure E-E-A-T compliance for industrial procurement.
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 Wire Identification in Industrial Automation: The Power of Ferrules and Cross-Ferruling
Proper wire labeling forms the cornerstone of reliable control system installation and long-term maintenance. In complex industrial automation environments, technicians terminate thousands of conductor ends inside control panels, marshalling racks, and field junction boxes. Ferrules serve as individual tube-shaped sleeve markers slipped onto conductors before final termination. While technicians historically relied on pre-printed individual letter rings, modern control panel builders utilize automated ferrule printing machines. These thermal-transfer printers generate durable, single-sleeve heat-shrink tags directly matching approved wiring schematics, significantly accelerating cabinet assembly workflows.
Understanding Marshalling Cabinets in Industrial Automation and Control Systems
Marshalling cabinets serve as the crucial connection hub between field instruments and centralized processing units. In large DCS and PLC control system architectures, hundreds of multipair field cables run from local junction boxes to the central instrument equipment room. The marshalling cabinet houses field terminal blocks, surge arresters, intrinsic safety isolation barriers, and interposing relays. By segregating field field-wiring terminations from sensitive processor hardware, engineers protect expensive controller backplanes from high-voltage transients. Consequently, this modular separation dramatically streamlines maintenance workflows and simplifies system expansion.
Essential Best Practices for PLC Wiring and Installation in Industrial Automation
Successful control system deployment begins with thoroughly reviewing manufacturer technical documentation. Controllers from major brands like Allen-Bradley, Siemens, and Schneider Electric feature unique terminal layouts. Engineers must verify voltage requirements before connecting power cables to prevent catastrophic equipment damage. Standard line connections require strict adherence to regional electrical codes and proper wire color coding. Furthermore, panel builders should always establish a robust low-impedance ground connection using at least 16-AWG copper conductor tied directly to the main plant grounding grid.