Overview
The Allen-Bradley 1771-WN is a dedicated field wiring arm module designed to interface with PLC-5 series systems. With 40 terminals and support for up to 32 I/O points, this wiring arm provides organized, reliable terminal connections for 1771-series I/O modules. The thermoplastic construction with tin-plated contacts ensures stable signal integrity across industrial automation environments.
Key Features
- 40 field-wireable terminals for flexible I/O connectivity
- Supports up to 32 I/O points maximum
- Tin-plated contact surfaces for corrosion resistance
- Thermoplastic material construction for durability
- Typical AC signal delay of 29 ms (±8 ms); DC signal delay of 30 ms (±7 ms)
- CSA, KC, and UL certified for North American and international use
Technical Specifications
- Part Number: 1771-WN
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Product Type: PLC-5 Field Wiring Arm
- Terminal Count: 40 terminals
- Maximum I/O Support: 32 points
- Contact Material: Tin-plated
- Housing Material: Thermoplastic
- AC Signal Delay: 29 ms typical (±8 ms)
- DC Signal Delay: 30 ms typical (±7 ms)
- Weight: 0.37 lb (0.168 kg)
- Certifications: CSA, KC, UL
- Compatible Series: 1771 PLC-5 I/O modules
Typical Applications
- Industrial control cabinets and machinery control panels
- PLC-5 automation systems requiring modular I/O wiring
- General-purpose AC/DC signal interfacing in process equipment
- Retrofit and upgrade projects on existing PLC-5 installations
- Manufacturing systems requiring organized, reliable field wiring
Compatibility & Replacements
Compatible With
- Allen-Bradley PLC-5 series programmable logic controllers
- 1771-series input and output modules (OVN output modules, digital I/O cards)
- 1771 module front-panel mounting configurations
- Industrial automation systems using Bulletin 1771 I/O architecture
Replaces / Drop-In Replacement For
- OEM original 1771-WN units in PLC-5 systems requiring terminal arm renewal
- Verify compatibility with your system integrator before ordering
Works With
- 1771 I/O modules (input cards, output cards, analog modules with compatible terminal configs)
- PLC-5 discrete and analog control applications
- Field wiring using AWG 14 spade-lugged or clamped connections
- 24–220V AC/DC industrial control signals
