<h2>Overview</h2>
<p>The <strong>Opto22 G4PB4R output module rack</strong> is a compact mounting solution designed for the G4 I/O family. <cite index=”1-1″>This rack compactly accommodates up to four G4 output modules and features channel-to-channel isolation between all field and control circuits.</cite> It is ideal for automation professionals requiring robust output management in space-constrained environments.</p>
<h2>Key Features</h2>
<ul>
<li><cite index=”1-1″>Accommodates up to four G4 output modules with channel-to-channel isolation</cite></li>
<li><cite index=”7-2,7-3″>I/O modules on this rack can have varied logic voltage, supporting 5 VDC, 15 VDC, and 24 VDC logic modules on the same rack</cite></li>
<li><cite index=”7-5,7-6″>Supports negative-true or positive-true logic on a point-by-point basis, with each point handling control signals differently</cite></li>
<li><cite index=”2-4,2-5″>Modules are inserted and removed easily and quickly without disturbing the field wiring, with threaded captive hold-down screws securely attaching them to the rack</cite></li>
<li><cite index=”2-6″>Barrier strips with screw terminals provide the field, control and mounting rack power connections</cite></li>
</ul>
<h2>Technical Specifications</h2>
<ul>
<li><strong>Model:</strong> G4PB4R</li>
<li><strong>Module Capacity:</strong> 4 channels (up to four G4 output modules)</li>
<li><strong>Supported Logic Voltages:</strong> 5 VDC, 15 VDC, 24 VDC</li>
<li><strong>Control Signal Types:</strong> Positive-true and negative-true</li>
<li><strong>Isolation:</strong> Channel-to-channel isolation between field and control circuits</li>
<li><strong>Connection Type:</strong> Barrier strips with screw terminals</li>
<li><strong>Module Installation:</strong> Tool-free insertion/removal with captive hold-down screws</li>
</ul>
<h2>Typical Applications</h2>
<p>The G4PB4R is suited for industrial automation environments requiring distributed output control. Common applications include:</p>
<ul>
<li>Factory automation and machine control systems</li>
<li>Process control and equipment triggering</li>
<li>SCADA and remote monitoring systems</li>
<li>OEM machine integration and retrofit applications</li>
</ul>
<h2>Compatibility & Replacements</h2>
<h3>Compatible With</h3>
<ul>
<li>Opto22 G4 Series I/O modules (output modules)</li>
<li>Opto22 SNAP PAC controllers</li>
<li>Opto22 groov EPIC edge controllers</li>
<li>Standard industrial PLC systems with parallel I/O connectivity</li>
</ul>
<h3>Replaces / Drop-In Replacement For</h3>
<p>The G4PB4R is the primary 4-channel output rack for the modern G4 I/O family. For legacy G1-based systems, the older PB4R model may apply, but verify compatibility with your system integrator before ordering.</p>
<h3>Works With</h3>
<ul>
<li>Opto22 PAC Control programming software</li>
<li>CODESYS industrial control software</li>
<li>Node-RED edge automation</li>
<li>Ignition Edge industrial edge platform</li>
<li>MQTT communications protocols</li>
</ul>
