<h2>Overview</h2>
<p>The Allen-Bradley 1771-WI thermocouple wiring arm is a purpose-built field interconnect device for the PLC-5 1771 I/O chassis family. <strong>Designed specifically for thermocouple and millivolt input modules</strong>, the 1771-WI provides 18 terminal connection points that accommodate up to 8 I/O modules within a single chassis. This non-fused wiring arm integrates directly into the 1771 I/O backplane, eliminating the need for external junction boxes or additional wiring harnesses.</p>
<h2>Key Features</h2>
<ul>
<li>18 terminal connection points for flexible module configuration</li>
<li>Supports up to 8 thermocouple/millivolt I/O modules per chassis</li>
<li>Gold conformal coating and 14-gauge stranded wire for corrosion resistance</li>
<li>Non-fused design for simplified maintenance and troubleshooting</li>
<li>Direct replacement for legacy PLC-5 systems requiring thermocouple connectivity</li>
<li>Compact form factor mounts to the bottom of 1771 I/O chassis</li>
</ul>
<h2>Technical Specifications</h2>
<ul>
<li><strong>Terminal Count:</strong> 18</li>
<li><strong>Maximum I/O Modules:</strong> 8</li>
<li><strong>Wire Gauge:</strong> 14 AWG stranded</li>
<li><strong>Insulation Thickness:</strong> 3/64 inches</li>
<li><strong>Protective Coating:</strong> Gold conformal coating</li>
<li><strong>Field Screw Torque:</strong> 7–9 lb·in</li>
<li><strong>Weight:</strong> 0.1 kg (0.22 lbs)</li>
<li><strong>External Power Required:</strong> None</li>
<li><strong>Fusing:</strong> Non-fused</li>
</ul>
<h2>Typical Applications</h2>
<ul>
<li>Temperature monitoring in process control systems</li>
<li>High-resolution thermocouple signal conditioning for PLC-5 platforms</li>
<li>Industrial furnace and oven temperature measurement</li>
<li>Precision millivolt signal acquisition in analytical equipment</li>
<li>Legacy automation system retrofit and modernization</li>
</ul>
<h2>Compatibility & Replacements</h2>
<h3>Compatible With</h3>
<ul>
<li>Allen-Bradley 1771-IXE high-resolution thermocouple I/O module</li>
<li>Allen-Bradley 1771-IY millivolt input modules</li>
<li>PLC-5 model 1771 I/O chassis (all series)</li>
<li>Thermocouple types E, J, K, T, R, and S</li>
<li>±100 millivolt analog inputs</li>
</ul>
<h3>Replaces / Drop-In Replacement For</h3>
<ul>
<li>Original equipment thermocouple wiring arms in 1771 I/O systems</li>
<li>Direct replacement for worn or damaged field wiring interconnects</li>
</ul>
<h3>Works With</h3>
<ul>
<li>Allen-Bradley PLC-5 ladder logic controllers</li>
<li>RSLogix 5 programming software</li>
<li>1771 I/O chassis backplane wiring</li>
<li>Standard thermocouple extension wires and connectors</li>
</ul>
