Discrete Control & Machine Automation Solution — Allen-Bradley 1769-OB16 | CompactLogix 1769 I/O Series
The Allen-Bradley 1769-OB16 is a 16-point 24 VDC sourcing digital output module designed for the CompactLogix 1769 I/O platform. It is the go-to choice for engineers who need reliable, high-density discrete output control in space-constrained panel environments. Whether you are switching solenoid valves on a packaging line or controlling indicator lamps across a conveyor system, the 1769-OB16 delivers deterministic, noise-immune switching performance in a compact form factor.
Where This Product Is Used
The 1769-OB16 is specified across a wide range of industrial automation applications:
- Packaging & Bottling Lines — Controls pneumatic solenoids, reject gates, and conveyor diverters with sub-millisecond response.
- Automotive Assembly — Drives actuators, clamps, and end-of-line test fixtures in high-cycle environments.
- Food & Beverage Processing — Switches pumps, agitators, and fill valves in washdown-adjacent control panels.
- Material Handling & Conveyors — Controls sorters, pushers, and divert mechanisms across multi-zone systems.
- Water & Wastewater Treatment — Operates motorized valves, blowers, and chemical dosing pumps.
- OEM Machine Builders — Integrated into standard machine architectures requiring a compact, scalable I/O backbone.
- Building Automation & HVAC — Controls damper actuators, fan starters, and lighting contactors.
Technical Specifications
| Parameter | Value |
|---|---|
| Catalog Number | 1769-OB16 |
| Series | CompactLogix 1769 I/O |
| Output Points | 16 (sourcing, DC) |
| Output Voltage | 10–28.8 VDC |
| Output Current (per point) | 0.5 A continuous |
| Output Current (per module) | 4 A max |
| Output Type | Transistor (sourcing / PNP) |
| ON-State Voltage Drop | ≤ 1 VDC |
| OFF-State Leakage Current | ≤ 1 mA |
| Response Time (OFF→ON) | ≤ 0.1 ms |
| Response Time (ON→OFF) | ≤ 2 ms |
| Backplane Current (5 VDC) | 120 mA |
| Backplane Current (24 VDC) | 0 mA |
| Operating Temperature | 0 to 60 °C (32 to 140 °F) |
| Storage Temperature | -40 to 85 °C |
| Relative Humidity | 5–95% non-condensing |
| Dimensions (H × W × D) | 90 × 35 × 87 mm |
| Weight | Approx. 180 g |
| Wiring | Removable terminal block (RTB) |
| Certifications | UL, CE, C-Tick, ATEX (Zone 2) |
Why Engineers Specify This Model
- High-density in a single slot — 16 outputs in a 35 mm wide module minimizes panel footprint without sacrificing I/O count.
- Sourcing (PNP) output topology — Compatible with the majority of 24 VDC field devices used in modern industrial automation.
- Fast switching response — ≤ 0.1 ms ON response supports high-speed machine cycles and precise timing sequences.
- Removable terminal block — Field wiring stays in place during module replacement, reducing maintenance downtime.
- Scalable architecture — Expands seamlessly with other 1769 I/O modules on CompactLogix L1x–L4x controllers.
- Proven field reliability — Widely deployed in millions of machines globally; extensive spare parts ecosystem.
Complete System Bill of Materials
A typical CompactLogix discrete output control system using the 1769-OB16 includes:
- Controller — 1769-L30ER / 1769-L33ER / 1769-L36ERM (CompactLogix 5370)
- Power Supply — 1769-PA2 (120/240 VAC) or 1769-PB2 (24 VDC)
- Digital Output Module — 1769-OB16 (this module)
- Digital Input Module — 1769-IQ16 (16-point 24 VDC sinking input)
- End Cap — 1769-ECR (right end cap, required)
- Programming Software — Studio 5000 Logix Designer v21+
- Communication Cable — 1756-CP3 or USB-to-serial adapter
- Field Wiring — 24 VDC solenoids, relays, indicators, or motor starters
Compliance & Industry Standards
- UL Listed (UL 508)
- CE Marked — EMC Directive 2014/30/EU & Low Voltage Directive 2014/35/EU
- C-Tick (RCM) — Australian/New Zealand EMC compliance
- ATEX Zone 2 — Suitable for use in potentially explosive atmospheres (gas group IIC)
- IEC 61131-2 — Programmable controller I/O interface standard
- RoHS Compliant
Quality Assurance & Sourcing
- Verified supply chain — All units sourced from authorized distributors or traceable secondary market channels.
- Pre-shipment inspection — Each module undergoes visual inspection, label verification, and functional continuity check.
- Authenticity guarantee — Counterfeit-free policy; documentation available on request.
- Warranty — 12-month replacement warranty against manufacturing defects.
- Packaging — Original or equivalent ESD-safe packaging with full labeling.
How to Source This Part
- Add to cart — Click “Add to Cart” or “Buy Now” for standard stock orders.
- Request a quote — Email [email protected] for bulk pricing, lead time confirmation, or urgent requirements.
- Provide your BOM — Send your full bill of materials for a consolidated quote on CompactLogix system components.
- Confirm shipping — We ship worldwide via DHL, FedEx, and UPS with full tracking and export documentation.
- Technical support — Our engineering team can assist with module selection, wiring diagrams, and Studio 5000 configuration guidance.
Application-Specific FAQ
Q: Can the 1769-OB16 drive inductive loads such as solenoid valves directly?
A: Yes. The transistor outputs are rated for inductive loads. For loads exceeding 0.5 A per point or with high inrush, use an interposing relay or ensure the load is within the module’s per-point and aggregate current ratings.
Q: Is the 1769-OB16 compatible with CompactLogix 5380 (5069) controllers?
A: No. The 1769-OB16 is part of the 1769 Compact I/O family and is only compatible with CompactLogix 5370 (1769-Lxx) controllers and MicroLogix 1500. The 5380 platform uses the 5069 Compact I/O series.
Q: How many 1769-OB16 modules can I connect to a single controller?
A: The maximum number of 1769 I/O modules per controller bank depends on the controller model. For example, the 1769-L30ER supports up to 16 modules total (local bank). Refer to the controller’s technical specifications for exact limits.
Q: What is the difference between 1769-OB16 and 1769-OB16P?
A: The 1769-OB16P includes protected outputs with diagnostics (short-circuit and overload detection), while the standard 1769-OB16 does not. The OB16P is preferred in applications where field wiring faults must be detected automatically.
Q: Can I replace the terminal block without removing the module?
A: Yes. The removable terminal block (RTB) can be disconnected and reconnected independently of the module, allowing field wiring to remain intact during module swap-out.
Q: Do you provide a datasheet or wiring diagram?
A: Yes. Contact [email protected] and our team will provide the Rockwell Automation publication 1769-IN058 installation instructions and relevant wiring diagrams.
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