<h2>Overview</h2>
<p>The <strong>Giddings & Lewis 502-03840-23R1</strong> is a servo encoder module for the PiC900 programmable industrial control platform. This module interfaces with encoders and provides analog outputs to drive servo systems and other proportional control devices in manufacturing and automation applications. The unit is designed for integration into PiC900 modular control systems and is now discontinued by the manufacturer.</p>
<h2>Key Features</h2>
<ul>
<li>Three analog output channels with ±10V output capability</li>
<li>Encoder input support for quadrature-encoded position feedback</li>
<li>DC digital inputs for signal conditioning and control logic</li>
<li>Compact module form factor for PiC900 I/O chassis integration</li>
<li>Designed and manufactured in the USA</li>
<li>Operating temperature range to 55°C ambient</li>
</ul>
<h2>Technical Specifications</h2>
<p>The module provides precision encoder input and servo drive output for closed-loop motion control within PiC900 systems.</p>
<ul>
<li><strong>Analog Outputs:</strong> 3 channels, 10 mA maximum @ ±10V</li>
<li><strong>Output Voltage Range:</strong> ±11V</li>
<li><strong>Encoder Inputs:</strong> 2 channels, 2.5 to 7.0 VDC maximum</li>
<li><strong>Encoder Input Current:</strong> 2.5 mA minimum @ 2.5 VDC</li>
<li><strong>Quadrature Frequency:</strong> 250 kHz maximum</li>
<li><strong>Pulse Frequency:</strong> 500 kHz maximum</li>
<li><strong>DC Digital Inputs:</strong> 2 channels, 15 to 30 VDC</li>
<li><strong>DC Input Logic (typical):</strong> ON at 15 VDC, OFF at 5 VDC</li>
<li><strong>Ambient Operating Temperature:</strong> Up to 55°C</li>
<li><strong>Weight:</strong> 630 grams (1.40 lbs)</li>
</ul>
<h2>Typical Applications</h2>
<ul>
<li>Servo axis control and closed-loop positioning in CNC and machine tool systems</li>
<li>Multi-axis motion control for industrial automation and material handling</li>
<li>Proportional valve actuation and pilot pressure control in fluid power systems</li>
<li>Position feedback processing for high-speed encoder signals</li>
<li>Legacy Giddings & Lewis machine tool retrofits and upgrades</li>
</ul>
<h2>Compatibility & Replacements</h2>
<h3>Compatible With</h3>
<ul>
<li>PiC900 programmable control system chassis and modules</li>
<li>PiC900 CPU and I/O backplane systems</li>
<li>Giddings & Lewis machine tool platforms</li>
<li>Rotary encoder interfaces (incremental quadrature signals)</li>
</ul>
<h3>Replaces / Drop-In Replacement For</h3>
<p>Verify compatibility with your system integrator before ordering. This module is discontin</p>
<h3>Works With</h3>
<ul>
<li>PiC900 servo control firmware and motion logic</li>
<li>Rotary encoder signal processing (quadrature and pulse modes)</li>
<li>Analog servo drive command interfacing</li>
<li>Proportional control valve command generation</li>
</ul>
