Allen-Bradley 1771-WD Field Wiring Arm
The Allen-Bradley 1771-WD is a 12-terminal field wiring arm engineered for the 1771 I/O module system. It acts as a swing-away interface between field devices and I/O modules, enabling rapid replacement of hardware without requiring technicians to disconnect individual control wiring. Equipped with tin-plated screw terminals, the 1771-WD delivers reliable signal conductivity for general-purpose digital AC/DC isolated I/O configurations.
Modular Swing Arm Architecture
The 1771-WD mounts directly onto the pivot bar located at the bottom of the 1771 I/O chassis. When installing or servicing a control module, the arm pivots upward to latch securely into place or swings downward to release the module. This hinged design preserves field wiring layouts, reduces installation error, and minimizes system downtime during maintenance procedures.
Terminal Configuration & Mechanical Setup
The unit features 12 screw terminals with tin-plated contacting surfaces designed to secure solid or stranded field conductors. Recommended terminal tightening torque is 7-9 lb-in. To ensure proper closure of the protective front cover, wiring gauge selection should account for total wire harness bundle diameter across all 12 points.
| Parameter | Specification |
|---|---|
| Model | 1771-WD |
| Brand | Allen-Bradley |
| Product Type | Field Wiring Swing Arm |
| System Compatibility | 1771 I/O Chassis Platform |
| Number of Terminals | 12 |
| Terminal Plating | Tin-Plated |
| Supported I/O Points | Up to 8 Points (6-Isolated I/O Modules) |
| Terminal Screw Torque | 7-9 lb-in (0.8-1.0 N-m) |
| Weight | 0.07 kg |
Frequently Asked Questions
Q: How does the 1771-WD simplify module replacement in a 1771 rack?A: The 1771-WD mounts onto the chassis pivot bar and swings away from the module. This allows the associated I/O module to be removed and replaced without disconnecting field wiring from the terminal screws.
Q: What type of I/O modules typically use the 1771-WD wiring arm?A: The 1771-WD is primarily used with 1771-series general-purpose isolated 120V AC/DC I/O modules, such as the 1771-ID, 1771-OD, 1771-OR, and 1771-OW.
Allen-Bradley 1771-WD Field Wiring Arm
Allen-Bradley 1771-WD Field Wiring Arm
The Allen-Bradley 1771-WD is a 12-terminal field wiring arm engineered for the 1771 I/O module system. It acts as a swing-away interface between field devices and I/O modules, enabling rapid replacement of hardware without requiring technicians to disconnect individual control wiring. Equipped with tin-plated screw terminals, the 1771-WD delivers reliable signal conductivity for general-purpose digital AC/DC isolated I/O configurations.
Modular Swing Arm Architecture
The 1771-WD mounts directly onto the pivot bar located at the bottom of the 1771 I/O chassis. When installing or servicing a control module, the arm pivots upward to latch securely into place or swings downward to release the module. This hinged design preserves field wiring layouts, reduces installation error, and minimizes system downtime during maintenance procedures.
Terminal Configuration & Mechanical Setup
The unit features 12 screw terminals with tin-plated contacting surfaces designed to secure solid or stranded field conductors. Recommended terminal tightening torque is 7-9 lb-in. To ensure proper closure of the protective front cover, wiring gauge selection should account for total wire harness bundle diameter across all 12 points.
| Parameter | Specification |
|---|---|
| Model | 1771-WD |
| Brand | Allen-Bradley |
| Product Type | Field Wiring Swing Arm |
| System Compatibility | 1771 I/O Chassis Platform |
| Number of Terminals | 12 |
| Terminal Plating | Tin-Plated |
| Supported I/O Points | Up to 8 Points (6-Isolated I/O Modules) |
| Terminal Screw Torque | 7-9 lb-in (0.8-1.0 N-m) |
| Weight | 0.07 kg |
Frequently Asked Questions
Q: How does the 1771-WD simplify module replacement in a 1771 rack?A: The 1771-WD mounts onto the chassis pivot bar and swings away from the module. This allows the associated I/O module to be removed and replaced without disconnecting field wiring from the terminal screws.
Q: What type of I/O modules typically use the 1771-WD wiring arm?A: The 1771-WD is primarily used with 1771-series general-purpose isolated 120V AC/DC I/O modules, such as the 1771-ID, 1771-OD, 1771-OR, and 1771-OW.
