<h2>Overview</h2>
<p>The <strong>Bailey IEMMU01</strong> is a rear-mount module mounting unit designed for the ABB Infi 90 distributed control system. This unit serves as a robust platform for organizing and powering multiple system modules in industrial automation and process control applications.</p>
<h2>Key Features</h2>
<ul>
<li>Supports up to 12 module slots for distributed control architecture</li>
<li>Rear-mount configuration for compact panel integration</li>
<li>Input: 120/240VAC, 50/60Hz; outputs include +5VDC, ±15VDC, 24VDC</li>
<li>Sheet metal card chassis with printed circuit board backplane assembly</li>
<li>Open top and bottom structure for efficient air cooling over modules</li>
<li>Quick-change module installation with captive fasteners and card guides</li>
<li>Available with or without primary power distribution</li>
</ul>
<h2>Technical Specifications</h2>
<ul>
<li>Input Voltage: 120/240VAC, 50/60Hz</li>
<li>DC Outputs: +5VDC, ±15VDC, 24VDC</li>
<li>Module Slots: 12 slots (supports up to 12 modules or 10 modules with 2 power modules)</li>
<li>Mounting: Rear-mount with standard 483mm (19-inch) rack flanges</li>
<li>Dimensions: Approximately 2.2 cm × 12.4 cm × 12.6 cm</li>
<li>Weight: 1.5–3.0 kg (depending on configuration)</li>
<li>Backplane Connectors: P54, P58, P60 for signal and power distribution</li>
<li>I/O Expander Bus: Supported with transition board (required for IEMMU11/12/21/22 compatibility)</li>
</ul>
<h2>Typical Applications</h2>
<p>The IEMMU01 is commonly deployed in:</p>
<ul>
<li>Process automation and distributed control systems</li>
<li>Industrial DCS environments using Bailey Infi 90 architecture</li>
<li>Manufacturing and production facilities requiring modular control expansion</li>
<li>System integrations involving multiple I/O and communication modules</li>
<li>Retrofit and legacy system upgrades in industrial plants</li>
</ul>
<h2>Compatibility & Replacements</h2>
<h3>Compatible With</h3>
<ul>
<li>ABB Bailey Infi 90 OPEN system modules</li>
<li>BRC-100 Harmony Bridge Controller</li>
<li>I/O Expander Bus (with transition board)</li>
<li>19-inch standard rack mounting configuration</li>
<li>AC and DC Modular Power Systems</li>
</ul>
<h3>Replaces / Drop-In Replacement For</h3>
<ul>
<li>IEMMU02 (functionally equivalent alternative)</li>
<li>Legacy Elsag Bailey module mounting units in Infi 90 systems</li>
</ul>
<h3>Works With</h3>
<ul>
<li>Bailey Infi 90 system architecture and ecosystem</li>
<li>Harmony platform integration</li>
<li>Industrial backplane communication protocols specific to Bailey/ABB systems</li>
</ul>
