Industrial Automation Solution – Allen-Bradley 1756-OA16 | ControlLogix Discrete Output Module
Where This Product Is Used
The Allen-Bradley 1756-OA16 is a 16-point, 120V AC discrete output module designed for the ControlLogix platform. It is widely deployed across demanding industrial environments where reliable AC load switching is critical:
- Automotive Manufacturing – Controls solenoid valves, motor starters, and conveyor actuators on high-throughput assembly lines.
- Food & Beverage Processing – Drives contactors and pilot lights in hygienic, washdown-adjacent control panels.
- Water & Wastewater Treatment – Switches pump starters and valve actuators in remote pump stations and SCADA-integrated facilities.
- Oil & Gas Upstream/Midstream – Interfaces with field devices in wellhead automation and pipeline control cabinets.
- Pharmaceutical & Life Sciences – Provides validated discrete control in GMP-compliant batch processing systems.
- Material Handling & Logistics – Activates sorters, diverters, and conveyor drives in distribution center automation.
- Power Generation & Utilities – Controls breaker coils and auxiliary relays in substation automation panels.
Technical Specifications
| Part Number | 1756-OA16 |
| Series | ControlLogix |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Module Type | Discrete Output |
| Number of Outputs | 16 Points |
| Output Voltage Range | 74–132V AC (47–63 Hz) |
| Output Current per Point | 1A continuous (2A surge for 43ms) |
| Module Current Draw (Backplane) | 125 mA @ 5V DC; 2 mA @ 24V DC |
| Isolation | Group isolated (8 points per group) |
| Backplane Communication | ControlLogix backplane (1756 chassis) |
| Wiring Type | Removable terminal block (RTB) |
| Operating Temperature | 0–60°C (32–140°F) |
| Storage Temperature | -40–85°C (-40–185°F) |
| Relative Humidity | 5–95% non-condensing |
| Weight | Approx. 300 g |
| Dimensions (H × W × D) | 94.0 × 44.5 × 99.1 mm |
| Certifications | UL, CE, CSA, C-Tick |
Why Engineers Specify This Model
- Native ControlLogix Integration – Plug-and-play compatibility with all 1756 chassis sizes (4, 7, 10, 13, 17-slot); no external interface required.
- Group Isolation Architecture – 8-point group isolation limits fault propagation and simplifies field wiring for mixed-voltage loads.
- High Surge Tolerance – 2A surge capacity per point handles inrush from inductive loads (contactors, solenoids) without nuisance tripping.
- Removable Terminal Block (RTB) – Enables module hot-swap and panel rewiring without disturbing field wiring, reducing MTTR.
- Proven Field Reliability – Widely specified in Rockwell-standard machine designs; extensive installed base ensures long-term spare availability.
- Studio 5000 / RSLogix 5000 Native – Full Add-On Profile (AOP) support for rapid commissioning and diagnostics.
Complete System Bill of Materials
A typical ControlLogix discrete output node using the 1756-OA16 requires the following components:
- 1756-OA16 – Discrete Output Module (this item)
- 1756-Lxx – ControlLogix Controller (e.g., 1756-L73, 1756-L85E)
- 1756-A7 / 1756-A10 / 1756-A17 – ControlLogix Chassis (7, 10, or 17-slot)
- 1756-PA72 / 1756-PB72 – ControlLogix Power Supply (120/240V AC or 18–32V DC)
- 1756-TBCH / 1756-TBS6H – Removable Terminal Block (cage clamp or screw)
- 1756-EN2T / 1756-EN3TR – EtherNet/IP Communication Module (if network I/O required)
- 1756-RM2 – Redundancy Module (for high-availability architectures)
Contact Konmask for complete system quotations and compatibility verification.
Compliance & Industry Standards
- UL Listed – UL 508 (Industrial Control Equipment)
- CE Marked – EN 61131-2 (Programmable Controllers), EMC Directive 2014/30/EU
- CSA Certified – C22.2 No. 142 (Process Control Equipment)
- RoHS Compliant – Directive 2011/65/EU
- ATEX / IECEx – Not rated for Zone 0/1; consult Rockwell for hazardous-location variants
- ISA-S5.1 – Compatible with standard P&ID instrumentation symbology for documentation
Quality Assurance & Sourcing
Konmask.com sources the 1756-OA16 through verified industrial distribution channels. Every unit offered is subject to the following quality controls:
- Authenticity Verification – Physical inspection of labeling, firmware revision, and date codes against Rockwell Automation factory standards.
- Functional Pre-Check – Backplane communication and output continuity verified prior to shipment where applicable.
- Traceability Documentation – Chain-of-custody records available on request for regulated industries (pharma, nuclear, defense).
- Packaging Integrity – ESD-safe packaging with humidity indicators; original Rockwell packaging preserved where available.
- Warranty – 12-month operational warranty against manufacturing defects; DOA replacement within 7 business days.
How to Source This Part
- Confirm Revision – Specify Series A, B, or C if your application requires a specific firmware revision. Contact us if unsure.
- Check Chassis Compatibility – Verify your 1756 chassis slot count and power supply capacity before ordering.
- Request a Quote – Email support@konmask.com or call +0086 19859288691 for volume pricing, lead times, and availability.
- Place Order – Add to cart directly or submit a purchase order (PO) for B2B procurement. Net-30 terms available for qualified accounts.
- Expedited Shipping – DHL Express, FedEx International Priority, and sea freight options available. Typical dispatch: 1–3 business days.
Application-Specific FAQ
Q: Can the 1756-OA16 control 240V AC loads?
A: No. The 1756-OA16 is rated for 74–132V AC. For 240V AC loads, specify the 1756-OA16I (individually isolated, 132–265V AC) or 1756-OB16I for DC applications.
Q: Is the 1756-OA16 compatible with the ControlLogix 5580 (1756-L8x) controllers?
A: Yes. The module is fully compatible with all ControlLogix generations including 5550, 5560, 5570, and 5580 controllers in any 1756 chassis.
Q: Can I mix 1756-OA16 modules with input modules in the same chassis?
A: Yes. ControlLogix chassis support any mix of I/O, communication, and controller modules in any slot.
Q: What is the maximum number of 1756-OA16 modules per chassis?
A: Limited by chassis slot count and power supply capacity. A 1756-PA72 (10A @ 5V DC) can typically support 6–8 output modules depending on total current draw.
Q: Do you supply the Removable Terminal Block (RTB) with the module?
A: RTBs are sold separately (1756-TBCH or 1756-TBS6H). Please specify when ordering if you require the RTB to be included.
Q: Can Konmask provide a Certificate of Conformance (CoC)?
A: Yes. CoC documentation is available upon request for all orders. Please indicate your requirement at time of purchase.
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Contact: support@konmask.com | +0086 19859288691
