
Product Overview
The Allen-Bradley 1771-OW16 Electromechanical Relay Contact Output Module is designed to provide robust AC/DC relay output control in industrial automation systems. It allows PLCs and DCS systems to control electromechanical devices such as motors, solenoids, lamps, and relays, ensuring safe, reliable, and isolated switching of output circuits.
Its modular plug-in design fits perfectly into the 1771 I/O chassis, enabling organized, scalable, and maintainable relay output systems.
Technical Specifications
| Parameter |
Details |
| Manufacturer |
Allen-Bradley |
| Model |
1771-OW16 |
| Product Type |
Electromechanical Relay Contact Output Module |
| Function |
Controls AC/DC devices via relay contacts |
| Compatible Systems |
Allen-Bradley 1771 I/O chassis, PLCs, DCS, SCADA systems |
| Output Type |
Electromechanical relay contacts |
| Output Channels |
16 relay contacts |
| Voltage/Current Range |
Typically AC/DC 120–240 V, configurable per system design |
| Mounting Type |
Chassis-mounted (1771 I/O rack) |
| Dimensions |
165 × 51 × 89 mm |
| Weight |
0.51 kg |
| Operating Environment |
Industrial automation, process control, manufacturing systems |
| Slots Required |
Standard 1771 I/O module slot |
| Installation |
Plug-in into 1771 I/O chassis |
Function and Working Principle
The 1771-OW16 operates by:
- Receiving control signals from PLC or DCS systems
- Switching AC or DC loads via electromechanical relay contacts
- Providing electrical isolation between control signals and load circuits
- Supporting modular replacement or expansion without downtime
This ensures safe, reliable, and versatile relay output control for industrial processes.
Role in Industrial Automation
The 1771-OW16 serves as a critical relay output interface:
- Controls AC/DC-powered devices such as motors, solenoids, lamps, and relays
- Converts PLC/DCS digital commands into isolated electromechanical relay switching
- Maintains organized terminal wiring for easier maintenance and troubleshooting
- Supports modular system expansion within the 1771 I/O chassis
- Enhances system safety, reliability, and operational efficiency
It is ideal for industrial automation, manufacturing, and process control systems where robust relay outputs are required.
Industrial Applications
The 1771-OW16 is commonly used in:
- AC/DC motor, solenoid, and lamp control
- PLC/DCS-controlled industrial automation systems
- SCADA systems requiring isolated relay outputs
- Industrial environments where robust electromechanical switching is needed
- Applications requiring modular, maintainable relay output modules
Its industrial-grade construction ensures long-term reliability.
Installation and System Integration
Installation steps:
- Insert the module into a standard 1771 I/O chassis slot
- Connect AC/DC loads to relay terminals
- Verify correct wiring and load voltage/current ratings
- Configure PLC or DCS to control relay output channels
- Maintain access for inspection, maintenance, and expansion
Proper installation ensures safe and dependable relay output operation.
Compatible System Components
The 1771-OW16 integrates with:
- Allen-Bradley 1771 I/O chassis
- PLC controllers and DCS systems
- AC/DC-powered devices: motors, solenoids, lamps, relays
- SCADA systems for monitoring and control
- Other 1771 I/O modules for modular system expansion
This creates a reliable and scalable relay output network.
Recommended Alternative Models
| Model |
Type |
Key Feature |
Application |
| Allen-Bradley 1771-OW8 |
Electromechanical Relay Output |
8-channel relay output |
Smaller AC/DC load applications |
| Allen-Bradley 1771-OMD |
AC Output Module |
Digital AC outputs |
PLC/DCS systems |
| Allen-Bradley 1771-OBD |
DC Output Module |
High-current DC switching |
Industrial automation |
| Siemens SM 1232 |
Relay Output Module |
Modular relay outputs |
PLC control panels |
| ABB AO810 |
Electromechanical Relay Output |
AC/DC device control |
Process control systems |
Key Advantages
- Provides robust electromechanical relay output control for AC/DC devices
- Modular design for easy installation, maintenance, and expansion
- Organized terminals for efficient wiring and troubleshooting
- Electrical isolation ensures safety between control and load circuits
- Compatible with Allen-Bradley 1771 I/O chassis and PLC systems
- Supports scalable relay output networks in industrial automation
Technical FAQs
What type of outputs does it provide?
Electromechanical relay contacts for AC/DC devices such as motors, solenoids, and lamps.
How is it mounted?
Plug-in module for Allen-Bradley 1771 I/O chassis.
Is it suitable for industrial environments?
Yes, designed for durable operation in demanding industrial conditions.
Can it work with other 1771 modules?
Yes, fully compatible within the 1771 I/O chassis system.
Conclusion
The Allen-Bradley 1771-OW16 Electromechanical Relay Contact Output Module is a robust, reliable, and modular solution for AC/DC device control. Its relay output capability, safe operation, and compatibility with the 1771 I/O chassis make it essential for PLC, DCS, and SCADA systems requiring dependable electromechanical switching in industrial automation.