<h2>Overview</h2>
<p>The <strong>Rotolok ROT550 Rotospeed Switch</strong> is a precision proximity-based sensor designed for continuous shaft rotation monitoring in demanding industrial environments. <cite index="1-5,1-6">The Rotolok Rotospeed Switch can be used whenever and wherever shaft monitoring is required, and its compact design and trouble free operation makes it ideal for Rotary Airlock, Screw Conveyor and Bucket Elevator applications, for overspeed and underspeed detection.</antml:cite> This sensor replaces manual visual supervision with reliable electronic detection, providing critical process control and safety assurance in material handling, pneumatic conveying, and rotating equipment applications.</p>
<h2>Key Features</h2>
<ul>
<li></li>
<li><strong>Wide voltage compatibility:</strong> </li>
<li><strong>Switching output:</strong> </li>
<li></li>
<li><strong>Recommended protection:</strong> </li>
</ul>
<h2>Technical Specifications</h2>
<ul>
<li><strong>Operating Voltage (DC):</strong> 12–240V DC</li>
<li><strong>Operating Voltage (AC):<strong> 24–240V AC, 50/60 Hz</li>
<li><strong>Switch Output—Normally Closed:</strong> Volt drop 6V max</li>
<li><strong>Switch Output—Normally Open:</strong> Leakage current 1.6 mA max</li>
<li><strong>Housing Material:</strong> Cast aluminium, weatherproof</li>
<li><strong>Shaft Connection:</strong> M12 threaded tap, direct drive coupling</li>
<li><strong>Rotation Direction:</strong> Clockwise and anticlockwise</li>
<li><strong>Recommended Circuit Protection:</strong> 5A fuse</li>
<li><strong>Sensing Technology:</strong> Proximity-based with built-in switching device</li>
</ul>
<h2>Typical Applications</h2>
<ul>
<li>Rotary Airlocks and Rotary Valves—continuous monitoring and stall detection</li>
<li>Screw Conveyors—overspeed and underspeed protection</li>
<li>Bucket Elevators—shaft speed monitoring and emergency shutdown triggering</li>
<li>Belt Conveyors and Vee Drives—sophisticated overspeed/underspeed detection</li>
<li>Industrial Process Equipment—any rotating shaft requiring 24/7 speed verification</li>
</ul>
<h2>Compatibility & Replacements</h2>
<h3>Compatible With</h3>
<ul>
<li>Industrial PLCs and controllers accepting 12–240V DC or 24–240V AC input signals</li>
<li>Allen-Bradley, Siemens, Omron, Mitsubishi, and similar automation controllers</li>
<li>Standard 24V DC and 240V AC industrial control systems</li>
<li>Motor protection relays and safety interlocks</li>
</ul>
<h3>Replaces / Drop-In Replacement For</h3>
<p>Verify compatibility with your system integrator before ordering specific model replacements. The ROT550 is Rotolok’s standard shaft monitoring solution across their product line.</p>
<h3>Works With</h3>
<ul>
<li>Industrial control networks accepting discrete NO/NC digital inputs</li>
<li>Hardwired relay logic and safety systems</li>
<li>Variable frequency drives (VFDs) with speed feedback monitoring</li>
<li>Standard industrial electrical enclosures and DIN-rail mounted control equipment</li>
</ul>
