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Allen-Bradley 1756-OB16DK Digital Output Module

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Allen-Bradley 1756-OB16DK

by Allen-Bradley

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OverviewThe Allen-Bradley 1756-OB16DK is a high-performance 16-point DC output module meticulously engineered for demanding ControlLogix systems. This robust module stands out with its 19–30V DC sourcing capabilities, integrated point-level diagnostics, and a durable conformal coating, making it an indispensable asset for industrial applications operating in challenging environmental conditions. Designed for precision and reliability, the 1756-OB16DK ensures seamless control and real-time monitoring of your critical processes. Each of the 16 channels is capable of delivering up to 1.0 A, providing ample power for high-demand field devices. The standout feature of field-side diagnostics significantly simplifies troubleshooting by pinpointing issues such as open circuits, shorts, and overloads at the individual channel level, thereby minimizing downtime and enhancing operational efficiency. Furthermore, the conformal coating offers superior protection against common industrial adversaries including dust, moisture, and corrosive substances, extending the module's lifespan and ensuring sustained performance in environments where standard modules would fail. Ideal for industries requiring advanced fault detection, environmental resilience, and precise output control, the Allen-Bradley 1756-OB16DK integrates effortlessly into your existing ControlLogix architecture, proving to be a wise investment for optimizing your automation infrastructure.Key Features 16 Sourcing DC Outputs: Delivers reliable 19–30V DC operation for a wide range of industrial devices. Integrated Field-Side Diagnostics: Advanced point-level fault detection for open circuits, shorts, and overloads, ensuring rapid troubleshooting and increased uptime. High-Current Output per Channel: Each channel provides up to 1.0 A, confidently driving robust field devices. Conformal Coating: Provides superior protection against dust, humidity, and corrosive agents, ideal for challenging industrial environments. Channel Status and Fault LEDs: Clear visual indicators for immediate monitoring of output status and fault conditions. Hot-Swappable Design: Enables module replacement without system shutdown, enhancing maintainability and operational continuity. Studio 5000 Integration: Full compatibility with Rockwell Software Studio 5000 for seamless programming, configuration, and monitoring. Technical Specifications Catalog Number: 1756-OB16DK Number of Outputs: 16 sourcing channels Voltage Range: 19–30V DC Output Current per Channel: 1.0 A max Total Current per Module: 8.0 A max Protection: Field-side diagnostics with conformal coating Isolation Voltage: 250V continuous Backplane Current: Approximately 180 mA @ 5.1V DC Compatible Terminal Blocks: 1756-TBCH or 1756-TBS6H (sold separately) Connector: 36-pin RTB (Removable Terminal Block, sold separately) Operating Temperature: 0°C to +60°C Mounting: ControlLogix chassis Applications Harsh Industrial Environments: The conformal coating makes it perfect for applications exposed to moisture, dust, and corrosive chemicals. Predictive Maintenance Strategies: Real-time, point-level diagnostics facilitate proactive identification of issues, reducing potential failures. Material Handling and Machine Automation: Ensures reliable control for conveyor systems, robotic cells, and automated machinery. OEM Systems Requiring Robust Output Modules: Provides a durable and high-performing solution for original equipment manufacturers. Process Control and Discrete Manufacturing: Offers precise and dependable output control for complex manufacturing processes. Why ChooseExperience unparalleled reliability with intelligent fault detection on each individual output channel, drastically reducing troubleshooting time and enhancing system uptime. The conformal coating provides a critical layer of protection, ensuring prolonged operational life and consistent performance even in the most demanding industrial settings.Order NowOptimize your industrial automation infrastructure today. Add the Allen-Bradley 1756-OB16DK to your system for superior control, diagnostics, and environmental resilience.FAQWhat is the primary function of the 1756-OB16DK?The 1756-OB16DK is a 16-point DC output module designed for ControlLogix systems, providing reliable sourcing for industrial devices with integrated diagnostics.How does the conformal coating benefit industrial applications?The conformal coating offers superior protection against environmental elements like dust, moisture, and corrosive substances, extending the module's lifespan in harsh conditions.Can I replace this module without shutting down my system?Yes, its hot-swappable design allows for module replacement without interrupting system operation, ensuring continuous productivity.What kind of diagnostics does the module offer?It provides integrated field-side diagnostics for individual channels, detecting issues such as open circuits, shorts, and overloads to simplify troubleshooting.What is the output current capability per channel?Each channel is capable of delivering up to 1.0 A, providing ample power for high-demand field devices.

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PRODUCT DETAILS

Allen-Bradley 1756-OB16DK

Overview

This is a genuine Allen-Bradley component from the ControlLogix family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem
  • Engineered to integrate inside ControlLogix installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes for the ControlLogix family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Catalog Number: 1756-OB16DK
  • Number of Outputs: 16 sourcing channels
  • Voltage Range: 19–30V DC
  • Output Current per Channel: 1.0 A max
  • Total Current per Module: 8.0 A max
  • Protection: Field-side diagnostics with conformal coating
  • Isolation Voltage: 250V continuous
  • Backplane Current: Approximately 180 mA @ 5.1V DC
  • Compatible Terminal Blocks: 1756-TBCH or 1756-TBS6H (sold separately)
  • Connector: 36-pin RTB (Removable Terminal Block, sold separately)
  • Operating Temperature: 0°C to +60°C
  • Mounting: ControlLogix chassis

Applications

  • Harsh Industrial Environments: The conformal coating makes it perfect for applications exposed to moisture, dust, and corrosive chemicals.
  • Predictive Maintenance Strategies: Real-time, point-level diagnostics facilitate proactive identification of issues, reducing potential failures.
  • Material Handling and Machine Automation: Ensures reliable control for conveyor systems, robotic cells, and automated machinery.
  • OEM Systems Requiring Robust Output Modules: Provides a durable and high-performing solution for original equipment manufacturers.
  • Process Control and Discrete Manufacturing: Offers precise and dependable output control for complex manufacturing processes.

Why Choose the 1756-OB16DK?

Experience unparalleled reliability with intelligent fault detection on each individual output channel, drastically reducing troubleshooting time and enhancing system uptime. The conformal coating provides a critical layer of protection, ensuring prolonged operational life and consistent performance even in the most demanding industrial settings.

Availability & Shipping

  • In stock: 1756-OB16DK ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 1756-OB16DK ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The 1756-OB16DK is a 16-point DC output module designed for ControlLogix systems, providing reliable sourcing for industrial devices with integrated diagnostics.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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