Rockwell Automation Allen-Bradley 1746-OW16 Digital Output Module — Reliable Power Switching for Industrial Control

Industrial automation relies on precision, timing, and durability. When systems depend on accurate output control, every relay, every signal, and every connection must perform flawlessly. The Rockwell Automation Allen-Bradley 1746-OW16 digital output module delivers that reliability. It ensures consistent switching performance for various field devices and forms a vital part of the SLC 500 control platform. Because of its efficiency and design flexibility, engineers around the world choose the 1746-OW16 to handle high-current output loads safely and effectively.

Introduction to the Allen-Bradley 1746-OW16

The 1746-OW16 output module offers 16 individually isolated relay-type outputs that switch both AC and DC voltages. Each channel operates independently, giving you maximum control over connected devices. The module suits applications that require switching solenoids, lamps, relays, contactors, or other loads that need a true mechanical contact.

Since the module belongs to the SLC 500 family, it integrates easily with the same chassis, processors, and communication modules. Therefore, you can expand your control system without redesigning the architecture.

Solid Design and Construction

Rockwell Automation builds the 1746-OW16 with industrial-grade materials that handle harsh environments. The rugged housing resists vibration, dust, and electrical noise, ensuring long service life. Furthermore, the module includes LED status indicators for each output point. These LEDs help you confirm output activity instantly, simplifying diagnostics and maintenance.

Through this thoughtful design, technicians gain clear feedback and better control. Because the module combines durability with usability, it remains one of the most dependable components in the SLC 500 series.

Technical Specifications

A closer look at the specifications reveals why the 1746-OW16 delivers such reliable performance:

Outputs: 16 points (relay type)
Operating Voltage Range: 5…265 V AC or 5…125 V DC
Current Rating per Output: 2 A maximum at 30 V DC or 2 A at 120 V AC
Backplane Current Draw: 0.14 A at 5 V DC
Isolation Voltage: 1500 V AC between outputs and system
Response Time: 10 ms typical for turn-on and turn-off
Operating Temperature: 0 °C to 60 °C
Mounting: Standard SLC 500 chassis slot

Because of these specifications, the module handles high inrush currents while maintaining long contact life. Engineers trust its consistent switching behavior even under frequent cycling.

Seamless Integration with the SLC 500 System

When you use the 1746-OW16, integration feels effortless. Simply insert the module into an open SLC chassis slot and secure it in place. The backplane connector aligns automatically, ensuring reliable data and power transfer.

The terminal block provides clear labeling for wiring, so connections to field devices become straightforward. You can attach solenoids, indicator lights, or contactors directly without additional interface hardware. Moreover, the module communicates instantly with the controller processor, allowing real-time output response.

Because everything fits within the same SLC architecture, expansion and maintenance take minimal effort.

Application Examples

The versatility of the Allen-Bradley 1746-OW16 allows it to serve in many industries:

Manufacturing and Assembly Lines – The module drives actuators, solenoid valves, and signal lamps to coordinate motion and assembly sequences.
Material Handling Systems – It controls conveyors, diverters, and alarms for precise flow management.
Building and Infrastructure Automation – Engineers use it to switch lighting circuits, pumps, and HVAC components efficiently.
Energy and Utility Plants – It triggers relays and contactors for load control and system protection.
Process Control Systems – It handles alarms, control valves, and mechanical interlocks in chemical or water treatment facilities.

In every scenario, the 1746-OW16 provides the responsiveness and reliability that modern automation demands.

Easy Installation Steps

Installing the 1746-OW16 takes only a few minutes. First, switch off the chassis power supply to ensure safety. Then, align the module with the slot guide rails and slide it firmly until it locks into position. Once seated, connect field wires to the removable terminal block following the wiring diagram.

Because each output channel uses a relay contact, always verify that your loads match the voltage and current ratings. After wiring, re-energize the system and observe the LED indicators to confirm correct operation.

With these simple steps, the module starts working immediately without complicated configuration.

Performance and Efficiency Advantages

The 1746-OW16 stands out because of its reliable mechanical switching and wide voltage range. Unlike solid-state modules, its relay contacts isolate outputs completely, ensuring safe operation for both AC and DC circuits.

Additionally, the module’s strong design helps it handle high surge currents that occur when inductive loads start or stop. Because it uses independent channels, one circuit never affects another. Engineers appreciate this isolation when designing mixed-voltage systems.

Through this combination of control and protection, the 1746-OW16 ensures stable operation and reduces the risk of costly downtime.

Maintenance and Troubleshooting

Routine maintenance becomes simpler with the 1746-OW16. Each output’s LED indicator provides immediate feedback. When an output activates, the LED lights up, confirming that the module sends power to the field device. If the light fails to turn on, technicians can check wiring or load connections quickly.

When replacement becomes necessary, the removable terminal block allows module exchange without rewiring. This feature saves time and eliminates unnecessary shutdowns. Because the module’s relay contacts have a long mechanical life, replacement rarely becomes frequent.

Key Benefits of the 1746-OW16

Flexibility: Works with both AC and DC loads.
High Reliability: Relay outputs handle high surge currents safely.
Ease of Use: Clear labeling, LED indicators, and removable terminal blocks simplify installation.
Compact Design: Fits standard SLC 500 racks efficiently.
Durability: Industrial-grade materials extend service life even in demanding environments.

Through these strengths, engineers improve system performance and reduce maintenance costs.

Comparing the 1746-OW16 with Other Modules

When comparing to solid-state output modules, the 1746-OW16 offers true contact isolation, eliminating leakage current issues that sometimes occur in transistor outputs. While solid-state options switch faster, they cannot match the flexibility of mechanical relays for mixed-voltage applications. Therefore, the 1746-OW16 remains the best choice for systems requiring dependable electromechanical control.

Choosing Reliable Supply Partners

To guarantee authentic Rockwell Automation products, engineers trust authorized suppliers. Wuhan Yuli Automation Technology Co., Ltd provides genuine Allen-Bradley modules including the 1746-OW16, 1746-IB32, and many others. The company offers professional support, technical consultation, and fast global delivery.

Visit www.ayingo.com to explore a complete range of Rockwell Automation PLC modules, variable-frequency drives, and industrial control solutions. With reliable supply and expert service, Wuhan Yuli Automation Technology Co., Ltd ensures your automation system operates efficiently and safely.

Enhancing System Performance with Rockwell Automation

Because Rockwell Automation continues to innovate, engineers gain more control over modern production processes. The Allen-Bradley 1746-OW16 demonstrates this commitment to quality. Its durable construction, easy integration, and precise output control allow manufacturers to improve productivity, reduce downtime, and extend equipment life.

When combined with other SLC 500 modules, the 1746-OW16 forms part of a complete automation ecosystem that delivers stable, predictable results. Every output action becomes immediate and accurate, driving performance across your facility.

Conclusion

In conclusion, the Rockwell Automation Allen-Bradley 1746-OW16 digital output module gives engineers the perfect balance between versatility, reliability, and simplicity. Because it controls both AC and DC loads with ease, it suits nearly every industrial application. Its relay outputs provide true electrical isolation, ensuring safety and efficiency at every point.

Choose Rockwell Automation for dependable quality. Choose Wuhan Yuli Automation Technology Co., Ltd for trusted supply and professional service. Together, they bring precision, performance, and reliability to every automation project.