1756-OB16I Allen-Bradley ControlLogix 16-Point Isolated Output Module
Manufacturer: Allen-Bradley
Product No.: 1756-OB16I
Condition： In stock
Product Type: Output Module
Product Origin: USA
Payment: T/T, Western Union
Weight: 420g
Shipping port: Xiamen
Warranty: 12 months
Estimate delivery times: 12-26 days (International), 3-6 days (United States).
Return within 30 days of purchase. Duties & taxes are non-refundable.
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Module Architecture & Hardware Profile
Engineered by Rockwell Automation, the 1756-OB16I is a high-density digital output module built for the ControlLogix platform. It accommodates 16 individually isolated sink/source channels operating across a 10-30V DC range. Requiring a single chassis slot, it interfaces via compatible 36-pin Removable Terminal Blocks like the 1756-TBCH or 1756-TBS6H.
Technical Specifications & Electrical Parameters
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Model / Part Number | 1756-OB16I |
| Product Series | ControlLogix |
| Module Type | Isolated DC Discrete Output Module |
| Voltage Category | 12/24V DC Sink/Source (10-30V DC Operating) |
| Output Channels | 16 Individually Isolated Points |
| Current Rating | 2 A @ 30 °C / 1 A @ 60 °C per point |
| Backplane Draw | 350 mA @ 5.1V DC / 2.5 mA @ 24V DC |
| Isolation Rating | 250V Continuous (Outputs-to-Backplane) |
Fault Detection & Channel Diagnostics
The unit features 16 front-panel status indicators mapping directly to active output channels. Programmers can configure individual safe states—such as Hold Last State, On, or Off—triggered during CPU transition to Program or Faulted modes. While onboard circuit protection is minimal, external quick-acting fuses (such as SOC MQ2-4A) protect against high inrush events.
Global PLC Spare HUB Insight & Field Implementation
Global PLC Spare HUB field specialists emphasize that when driving inductive actuators like heavy solenoids or horns, installing external freewheeling diodes or surge suppression blocks is vital to prevent contact degradation. Ensuring proper linear derating calculations prevents thermal overload when ambient cabinet temperatures approach the 60 °C threshold.
Target Equipment & Industrial Applications
The 1756-OB16I excels in complex automation nodes requiring mixed potential voltages across independent circuits. Typical applications include high-speed packaging lines, automated material handling systems, municipal pumping infrastructure, and heavy manufacturing safety interlock panels.
Fulfillment, Shipping & Warranty Assurance
We dispatch all orders within 24 to 48 hours globally. Reliable logistics partners include FedEx, UPS, and DHL. Each 1756-OB16I module is fully backed by our standard 12-month replacement warranty.
Selection Guide & Engineering Checklist
Verify that your local or remote 1756 chassis has an available single slot and adequate 5V backplane power capacity. Confirm your wiring architecture aligns with either independent isolated voltage loops or a common bus configuration, and select matching 36-pin terminal blocks prior to system startup.
Frequently Asked Questions
Q: What is the purpose of channel-to-channel isolation on the 1756-OB16I?
A: It allows each of the 16 outputs to connect to completely separate external DC voltage sources without electrical cross-interference.
Q: How do I handle inductive loads safely with this module?
A: Always install an external surge suppression device or flyback diode across inductive loads to absorb high reverse voltage spikes during turn-off.
Q: Can the output states be customized during a controller fault condition?
A: Yes, you can configure individual points to hold their last state, turn explicitly on, or switch off when the processor enters a fault or program mode.
Q: What removable terminal blocks are compatible with this unit?
A: The module accepts standard 36-pin RTBs, specifically models 1756-TBCH and 1756-TBS6H.
Q: How does ambient temperature affect the module's current capacity?
A: Output current derates linearly from 2 Amps per point at 30 degrees Celsius down to 1 Amp per point at 60 degrees Celsius.
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Q: Are these parts 100% original and new?
A: Yes. Every component is guaranteed to be 100% original, brand-new, and factory-sealed. We also provide a 12-month comprehensive warranty for your peace of mind.
Q: How fast is the shipping to my country?
A: For in-stock items, we offer same-day dispatch. International express shipping (DHL/FedEx/UPS) typically delivers within 3–5 business days worldwide.
Q: Can I get a formal quotation with shipping costs?
A: Absolutely. Our sales team is ready to provide a detailed Proforma Invoice (PI) including the most competitive shipping rates for your location.
Q: Do you offer discounts for bulk orders?
A: We provide volume-based pricing for large projects or multiple-item orders. Please contact us to get our Best Price Guarantee.
12-Month Comprehensive Warranty
Every part supplied by Global PLC Spare Hub is covered by a 12-month warranty from the date of invoice.
- Coverage: Functional defects and hardware failures under normal operating conditions.
- Commitment: We provide immediate repair, replacement, or a full refund for any verified defective components to minimize your operational downtime.
Returns & Exchange Policy
We offer a 30-day return policy to ensure you receive the exact part your system requires.
- Eligibility: Returns are accepted for uninstalled items in their original, factory-sealed packaging.
- RMA Process: Please contact our support team to obtain a Return Merchandise Authorization (RMA) number before shipping.
- Fast Processing: Refunds or exchanges are processed within 3–5 business days after the returned item passes our technical inspection.
Need Technical Assistance?Not sure if this part is compatible with your system? [Consult our Engineers] before purchasing to ensure 100% compatibility.
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