1771-WF | Allen-Bradley PLC-5 18-Terminal Field Wiring Arm

Product Overview

The 1771-WF is an 18-terminal field wiring arm engineered for the Allen-Bradley PLC-5 series. It provides a secure and efficient connection point between field devices and I/O modules, ensuring reliable signal transfer and minimal electrical resistance. This wiring arm is built with gold-plated contacts to improve conductivity and corrosion resistance, making it ideal for low-resistance industrial control applications. Its robust design and conformal coating make it suitable for use in harsh industrial environments.

Key Features

• Brand: Allen-Bradley

• Model: 1771-WF

• Product Type: Field Wiring Arm

• Series: PLC-5

• Number of I/O Channels: Supports up to 8 I/O connections

• Number of Terminals: 18 terminals

• Contact Plating: Gold for improved conductivity and corrosion protection

• Screw Torque: 7–9 lb·in for reliable terminal fastening

• Typical Application: Low-resistance analog and digital wiring interfaces

• External Power Requirement: None

• Typical AC Signal Delay (Off): 29 ±8 ms

• Typical DC Signal Delay (Off): 30 ±7 ms

• Coating: Conformal coating for enhanced environmental protection

• Compatible Wiring Arm: 1771-WN

• Weight: 0.11 kg (0.25 lbs)

Application Scenarios

The 1771-WF is designed for a range of industrial automation uses, including:

• Analog signal interfacing: Ideal for modules requiring low-resistance signal transmission

• PLC-5 control systems: Ensures stable and organized field wiring connections

• Panel assembly and maintenance: Allows quick disconnection and reconnection of field wiring

• High-reliability environments: Suitable for use in control rooms and plant-floor systems where signal integrity is essential

Performance and Design

• High Conductivity: Gold contacts provide superior signal quality and minimal voltage drop

• Durable Construction: Designed with industrial-grade materials and conformal coating for long operational life

• Ease of Maintenance: Plug-in terminal design simplifies wiring and reduces maintenance downtime

Compatibility

• System Integration: Works seamlessly with Allen-Bradley PLC-5 and 1771-series I/O modules

• Wiring Accessories: Designed for compatibility with the 1771-WN wiring arm

• Installation Environment: Suitable for analog, digital, and low-resistance applications

FAQs

Q: What is the main function of the 1771-WF wiring arm?
A: It serves as a terminal interface for connecting field wiring to Allen-Bradley PLC-5 I/O modules.

Q: How many terminals are provided on the 1771-WF?
A: The unit includes 18 terminals to accommodate a variety of wiring configurations.

Q: Does the 1771-WF require external power?
A: No, it is a passive component and operates without an external power source.

Q: Why are the contacts gold-plated?
A: Gold plating enhances conductivity, reduces contact resistance, and prevents oxidation or corrosion.

Q: What type of applications is this model best suited for?
A: It is primarily used in low-resistance signal wiring for analog and digital control systems.