Technical Specifications
| ITEM |
Specifications |
| Manufacturer | Allen-Bradley |
| Catalog Number |
1771-OW16 |
| Module Type |
Electromechanical Relay Contact Output Module |
| Number of Outputs |
16 Relay Outputs |
| Chassis Compatibility | 1771 I/O Chassis |
| Module Occupancy |
1 Slot |
| Output Type |
Mechanical Relay Contact |
| Switching Frequency |
1/3 Hz at maximum load |
| Contact Bounce Time |
4.0 ms maximum |
| Backplane Current | 1.3 A maximum |
| Status Indicators |
16 output status indicators |
Contact Information
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- Website:Https://www.plcexport.com/
- Sales Manager: Myrtle
-💬 Email: sales5@askplc.com
- 📱Phone (WhatsApp): +86-18950128464
Product Overview

The Allen-Bradley 1771-OW16 is an electromechanical relay contact output module designed for use with the 1771 I/O chassis platform. It provides 16 relay output channels for controlling external AC or DC field devices through isolated mechanical contacts.
The module supports both AC and DC switching applications, allowing users to interface PLC control signals with a wide range of industrial loads. Each output channel includes an individual status indicator, providing clear visibility of relay operation during system monitoring and troubleshooting.
Key Features
- 16-Point Relay Output Design
The 1771-OW16 provides 16 independent relay contact outputs, allowing a PLC system to control multiple external devices from a single I/O module.
- Individual Output Monitoring
Each relay output has a dedicated status indicator, enabling operators to quickly identify output conditions during commissioning and maintenance.
- Electrical Isolation Between Control and Field Circuits
Relay contacts provide separation between the PLC control system and external field devices, helping support different voltage interface requirements.
FAQ
What type of module is the Allen-Bradley 1771-OW16?
The 1771-OW16 is an electromechanical relay contact output module used with Allen-Bradley 1771 I/O systems. It provides 16 relay output points for controlling external devices.
Which chassis does the 1771-OW16 install into?
The module is designed for installation in an Allen-Bradley 1771 I/O chassis and requires one chassis slot.
Does the module provide output status indication?
Yes. The 1771-OW16 includes individual output status indicators that show the operating state of each relay output.
ABOUT US

PLC Export headquartered in Xiamen, Fujian, China, is a global supplier of industrial automation components. We specialize in hard-to-find and obsolete products from leading brands such as Allen-Bradley, Bently Nevada, ICS TRIPLEX, ABB, and more.
Our extensive stock covers rare legacy control modules no longer produced by manufacturers. Don't let missing obsolete parts stall your production line-send us your part numbers anytime, and we'll help you locate the exact component you need without delay.
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