Product Details
Product Overview
The Allen-Bradley 1756-OV32E provides high-density discrete output control for ControlLogix chassis-based systems. This module features 32 sinking outputs, categorized into two groups of 16, and operates within a 10–30V DC range. We supply this unit as 100% Brand New and Original. The "E" designation signifies integrated electronic fusing, which protects individual circuits against overcurrent conditions and short circuits without the need for manual fuse replacement, significantly reducing maintenance downtime in complex automated lines.
Technical Specifications
| Parameter | Specification Details |
| Number of Outputs | 32 (16 points per group) |
| Voltage Category | 12/24V DC Sink |
| Operating Voltage Range | 10–30V DC |
| Protection Type | Electronic Fusing |
| Max Current Per Point | 0.5 A @ 50 °C (0.35 A @ 60 °C) |
| Max Current Per Module | 16 A @ 50 °C (10 A @ 60 °C) |
| Output Delay Time (Off to On) | 75 µs nominal / 300 µs maximum |
| Output Delay Time (On to Off) | 230 µs nominal / 1 ms maximum |
| On-state Voltage Drop | 350 mV DC @ 0.5 A |
| Backplane Power | 2.04 Watts |
Engineering Advantages
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Integrated Electronic Protection: The 1756-OV32E monitors each output circuit for excessive current. If a fault occurs, the electronic fuse trips to protect the module’s internal circuitry. This eliminates the logistics and labor costs associated with stocking and replacing physical glass fuses.
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Rapid Fault Recovery: Once you clear the external fault, you can reset the electronic fuse through the controller software or by cycling power. This capability enables faster system restoration compared to traditional fused modules.
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High-Density Control: Managing 32 points in a single slot maximizes chassis real estate. This allows engineers to design smaller control enclosures or add more functionality to existing racks without requiring additional slots.
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Advanced Diagnostics: The module provides status indicators and software-accessible diagnostic data. Maintenance teams can pinpoint exactly which output group or circuit has tripped, drastically reducing the "mean time to repair" (MTTR) by eliminating manual circuit tracing.
FAQs
Q: What is the benefit of the "Sink" output configuration in the 1756-OV32E?
A: In a sinking configuration, the module provides a path to the negative common (ground) for the load. This is essential for interfacing with field devices that are pre-wired to a positive power source, allowing for flexible integration into diverse industrial wiring standards.
Q: Does this module require a specific terminal block?
A: Yes. Due to the high density of 32 points, you must use a 36-pin Removable Terminal Block (RTB), such as the 1756-TBNH or 1756-TBSH. Always verify your wiring requirements and current loads before selecting the appropriate RTB for your installation.
Q: Is this 1756-OV32E unit a refurbished or surplus item?
A: No. We guarantee this product is 100% Brand New and Original. It arrives in the original manufacturer's packaging with factory seals intact. This ensures the electronic fuses and internal semiconductors possess their full operational life and meet all factory performance ratings.
Q: How does ambient temperature affect the module's performance?
A: The module supports a maximum of 0.5 A per point at 50 °C (122 °F). If your cabinet temperature reaches 60 °C (140 °F), you must derate the current to 0.35 A per point to ensure thermal stability and prevent premature component failure.
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
Preventing Spurious Trips in Emergency Stop Systems: A Technical Guide
In industrial automation, the Emergency Stop (E-Stop) pushbutton is the ultimate safety line. However, relying on a single Normally-Closed (NC) contact can sometimes lead to unexpected spurious trips. As a control systems engineer, I have seen these nuisance trips halt entire production lines, causing significant downtime. Understanding why these components fail and how to implement robust architecture is essential for any reliable DCS or PLC-based safety system.
Sequencing Induction Motor Control with PLC Logic: Best Practices
In modern industrial automation, controlling a group of induction motors requires precision and safety. Uncontrolled simultaneous startup of multiple large motors often causes significant voltage dips, potentially triggering protective trips. Therefore, implementing a sequential startup and shutdown strategy is essential. This approach minimizes inrush current and ensures the system operates within established power constraints. A robust PLC program serves as the ideal engine for orchestrating these sequences.
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.