The Allen Bradley 1771-WN is a PLC-5 series detachable field wiring arm designed for the 1771 I/O platform. It provides a dependable connection point between field wiring and compatible I/O modules, enabling faster installation, simplified maintenance, and cleaner cabinet organization in industrial automation systems.
Engineered for demanding factory environments, the 1771-WN allows technicians to replace I/O modules without removing field-side wiring, helping minimize downtime and improve long-term serviceability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Catalog Number | 1771-WN |
| Module Type | Detachable Wiring Arm |
| System Family | PLC-5 / 1771 I/O |
| Function | Field wiring termination interface |
| Compatible Modules | Selected 1771 analog, relay, and digital I/O modules |
| Terminal Type | Screw-clamp terminals |
| Wiring Access | Front-access terminal layout |
| Connection Method | Swing-arm detachable connection |
| Mounting Style | Direct attachment to I/O module |
| Wiring Capacity | Standard industrial control wiring |
| Maintenance Support | Allows module replacement without rewiring |
| Construction Material | Industrial-grade molded thermoplastic |
| Backplane Interface | Through installed I/O module |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Weight | ~0.15 kg |
| Dimensions (L×W×H) | 166 mm × 36 mm × 131 mm |
Functional Overview
The 1771-WN is designed to simplify and stabilize field wiring management within PLC-5 systems. By acting as a removable wiring interface, it improves maintenance efficiency while protecting field wiring integrity during service procedures.
Main functions include:
- Secure field signal termination
- Fast replacement of installed I/O modules
- Organized wiring inside industrial cabinets
- Reduced maintenance and troubleshooting time
- Reliable long-term electrical connectivity
Its detachable swing-arm design is especially valuable in large automation systems where downtime reduction is critical.
Recommended Related Modules
| Model | Function |
|---|---|
| 1771-OW16 | Relay output module |
| 1771-OFE2 | Analog current output module |
| 1771-IFE | Analog input module |
| 1771-IR | RTD input module |
| 1771-IAD | AC input module |
| 1771-A4B | 16-slot I/O chassis |
Popular Allen Bradley PLC-5 Modules
| Model | Function |
|---|---|
| 1785-L40B | PLC-5 processor |
| 1771-SN | Remote I/O scanner module |
| 1771-DMC | Communication module |
| 1771-ALX | Local I/O adapter module |
| 1771-P6S | Power supply module |
