{"product_id":"new-ewm-me-550-250-2-si-s-brake-module-half-wave-rectifier-reissmann","title":"EWM ME 550\/250-2 Si-S brake module - Half-wave rectifier REISSMANN","description":"\u003ch2\u003eEngineer's Quick Brief\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Voltage Industrial Compliance:\u003c\/strong\u003e Engineered to process elevated factory mains input from \u003cstrong\u003eAC 550V down to 250V\u003c\/strong\u003e, outputting clean half-wave DC power to heavy-duty electromagnetic motor brakes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSilicon-Grade Transient Shielding:\u003c\/strong\u003e Built-in \u003cstrong\u003eSi-S series semiconductor arrays\u003c\/strong\u003e offer advanced voltage surge protection, handling harsh inductive feedback during rapid industrial motor stoppage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Mode Quenching Capability:\u003c\/strong\u003e Natively supports standard slow-turn-off loops and extreme inductive arc-collapse speed braking circuits without breakdown.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Application Scenario:\u003c\/strong\u003e Optimized for heavy industrial gantry drives, automated shipboard cranes, marine hoisting winches, and massive induction motor control panels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 20px 0;\"\u003e\n\n\u003ch2\u003eSEO Introduction\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eEWM ME 550\/250-2 Si-S brake module\u003c\/strong\u003e, precision manufactured featuring proprietary \u003cstrong\u003eREISSMANN half-wave rectifier\u003c\/strong\u003e technology, is a robust industrial-grade \u003cstrong\u003emotor brake rectifier block\u003c\/strong\u003e. Purpose-built to handle harsh alternating current transients, this high-performance \u003cstrong\u003ehalf-wave brake rectifier module\u003c\/strong\u003e reliably converts inputs spanning \u003cstrong\u003eAC 250V to 550V\u003c\/strong\u003e into direct current (DC) fields required for industrial holding brakes. By incorporating heavy-duty silicon suppressors (Si-S), this \u003cstrong\u003emains brake ballast\u003c\/strong\u003e mitigates heat generation while maintaining strict holding torque profiles. It stands as an indispensable drop-in component for field maintenance engineers, automation experts, and marine engineering technicians seeking stable positioning cycles across modern automated machinery and high-inertia heavy conveyor assemblies.\u003c\/p\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 20px 0;\"\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n  \u003ctable style=\"width: 100%; border-collapse: collapse; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background-color: #16c8c8; color: #ffffff;\"\u003e\n        \u003cth style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eParameter Classification\u003c\/th\u003e\n        \u003cth style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eTechnical Descriptor\u003c\/th\u003e\n        \u003cth style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eEngineering Value \/ Tolerance\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n        \u003ctd rowspan=\"4\" style=\"padding: 12px; border: 1px solid #eeeeee; font-weight: bold; vertical-align: top;\"\u003eElectrical Limits\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eInput Voltage Range ($V_{in}$)\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eAC 250V - 550V (50\/60 Hz utility grids)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #fafafa;\"\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eRectification Topology\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eAsymmetric Single-Phase Half-Wave Loop\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eContinuous Load Current ($I_{N}$)\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003e[DATA_MISSING_TBD]\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #fafafa;\"\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003ePeak Impulse Voltage Suppressing\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eIntegrated Si-S High-Energy Varistor Matrix\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n        \u003ctd rowspan=\"3\" style=\"padding: 12px; border: 1px solid #eeeeee; font-weight: bold; vertical-align: top;\"\u003eMechanical Architecture\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eEnclosure Material\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eV-0 Grade Flame-Retardant Plastic Enclosed Case\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #fafafa;\"\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003ePhysical Dimensions\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003e[DATA_MISSING_TBD]\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eNumber of Channels\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003e1 Channel Output Loop\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #fafafa;\"\u003e\n        \u003ctd rowspan=\"2\" style=\"padding: 12px; border: 1px solid #eeeeee; font-weight: bold; vertical-align: top;\"\u003eEnvironmental\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eOperating Ambient Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003e[DATA_MISSING_TBD]\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eIngress Protection Level\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003e[DATA_MISSING_TBD]\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 20px 0;\"\u003e\n\n\u003ch2\u003eApplication Matrix\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n  \u003ctable style=\"width: 100%; border-collapse: collapse; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background-color: #16c8c8; color: #ffffff;\"\u003e\n        \u003cth style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eTarget Industry Cluster\u003c\/th\u003e\n        \u003cth style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eIntegrated Machinery Subsystem\u003c\/th\u003e\n        \u003cth style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003ePractical Field Value Realized\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee; font-weight: bold;\"\u003eMarine \u0026amp; Shipboard Automation\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eHeavy-duty deck winches, anchor windlass setups, and ship propulsion brake loops.\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eResists massive grid voltage drops commonly occurring on localized marine diesel generators.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #fafafa;\"\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee; font-weight: bold;\"\u003eHeavy Overhead Cranes\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eBridge crane hoisting drums and magnetic fail-safe caliper releases.\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eWithstands continuous back-EMF inductive spikes during vertical load positioning.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background-color: #f4fcfc;\"\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee; font-weight: bold;\"\u003eHigh-Power Inductive Motors\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eLarge industrial induction systems requiring immediate deceleration controls.\u003c\/td\u003e\n        \u003ctd style=\"padding: 12px; border: 1px solid #eeeeee;\"\u003eEnsures smooth, linear half-wave DC output to match standard industrial holding coil specs.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 20px 0;\"\u003e\n\n\u003cdiv id=\"koeed-tool-wrapper\" style=\"border: 1px solid #eeeeee; padding: 20px; background-color: #fafafa; border-radius: 4px;\"\u003e\n  \u003ch3 style=\"color: #16c8c8; margin-top: 0;\"\u003eREISSMANN ME 550\/250-2 Half-Wave Rectification Simulator\u003c\/h3\u003e\n  \u003cp style=\"margin-bottom: 15px;\"\u003eCalculate the theoretical nominal DC output voltage and safe structural configuration limits based on your plant's input line level.\u003c\/p\u003e\n  \n  \u003cdiv style=\"margin-bottom: 12px;\"\u003e\n    \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 4px;\"\u003eMains Voltage Supply (AC Line Input):\u003c\/label\u003e\n    \u003cinput type=\"number\" id=\"koeed-ac-input\" value=\"400\" min=\"200\" max=\"600\" style=\"padding: 6px; border: 1px solid #eeeeee; width: 100%; box-sizing: border-box;\" oninput=\"koeedCalc()\"\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"margin-bottom: 12px;\"\u003e\n    \u003clabel style=\"display: block; font-weight: bold; margin-bottom: 4px;\"\u003eBraking Loop Circuit Configuration:\u003c\/label\u003e\n    \u003cselect id=\"koeed-wiring-type\" style=\"padding: 6px; border: 1px solid #eeeeee; width: 100%; box-sizing: border-box;\" onchange=\"koeedCalc()\"\u003e\n      \u003coption value=\"ac\"\u003eAC Line Interruption (Delayed Quenching ~250ms)\u003c\/option\u003e\n      \u003coption value=\"dc\"\u003eDC Path Fast Interruption (Arc-Collapse Quenating ~30ms)\u003c\/option\u003e\n    \u003c\/select\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv id=\"koeed-voltage-warning\" style=\"display: none; background-color: #ffebeb; color: #cc0000; padding: 10px; margin-bottom: 15px; border-radius: 4px; font-weight: bold;\"\u003e\u003c\/div\u003e\n\n  \u003cdiv style=\"background-color: #ffffff; padding: 15px; border: 1px solid #eeeeee; border-radius: 4px;\"\u003e\n    \u003cdiv style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eCalculated Brake Coil Drive Voltage ($V_{dc}$):\u003c\/strong\u003e \u003cspan id=\"koeed-dc-output\" style=\"color: #16c8c8; font-weight: bold;\"\u003e180.0 V DC\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eEstimated Stopping Time Envelope:\u003c\/strong\u003e \u003cspan id=\"koeed-time-output\" style=\"color: #16c8c8; font-weight: bold;\"\u003e200 - 350 ms\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv\u003e\n\u003cstrong\u003eEngineering Setup Assessment:\u003c\/strong\u003e \u003cspan id=\"koeed-behavior-output\" style=\"color: #555555;\"\u003eStandard half-wave conversion. Coil field decays through rectifier blocking loop. Best suited for horizontal conveyor paths to avoid abrupt mechanical gear stress.\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cnoscript\u003e\n    \u003cdiv style=\"margin-top: 10px; color: #cc0000;\"\u003eAttention: JavaScript is disabled. Live calculations are offline until script permissions are granted.\u003c\/div\u003e\n  \u003c\/noscript\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\nfunction koeedCalc() {\n  var acVal = parseFloat(document.getElementById('koeed-ac-input').value);\n  var wireType = document.getElementById('koeed-wiring-type').value;\n  var warningBox = document.getElementById('koeed-voltage-warning');\n  \n  if (isNaN(acVal)) return;\n\n  if (acVal \u003c 250 || acVal \u003e 550) {\n    warningBox.style.display = 'block';\n    warningBox.innerText = 'Operating Warning: Voltage value falls outside the absolute native boundaries of the ME 550\/250-2 designation (AC 250V - 550V). Thermal risk or latching fault probable.';\n  } else {\n    warningBox.style.display = 'none';\n  }\n\n  var dcVal = (acVal * 0.45).toFixed(1);\n  document.getElementById('koeed-dc-output').innerText = dcVal + ' V DC';\n  \n  var minTime, maxTime, infoDesc;\n  if (wireType === 'ac') {\n    minTime = 200; maxTime = 350;\n    infoDesc = 'Standard half-wave conversion. Coil field decays via the flyback loop inside the block. Best suited for horizontal conveyor paths to avoid harsh component wear.';\n  } else {\n    minTime = 25; maxTime = 50;\n    infoDesc = 'Fast response forced arc collapse. Highly critical configuration for vertical lifting platforms or hoist assemblies to neutralize gravitational slippage.';\n  }\n  \n  document.getElementById('koeed-time-output').innerText = minTime + ' - ' + maxTime + ' ms';\n  document.getElementById('koeed-behavior-output').innerText = infoDesc;\n}\n\u003c\/script\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 20px 0;\"\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat does the \"Si-S\" designation within the REISSMANN model nomenclature signify?\u003c\/h3\u003e\n\u003cp\u003eThe \"Si-S\" designation indicates that the module features integrated heavy-duty Silicon-grade Suppressor elements inside its encapsulation. These specialized components act as high-energy voltage clamps designed to redirect dangerous backward electromotive forces (back-EMF) when breaking highly inductive motor brake coils, preserving internal silicon layers from irreversible overvoltage punctures.\u003c\/p\u003e\n\n\u003ch3\u003eHow should the input terminals be measured to verify internal rectifier diode status?\u003c\/h3\u003e\n\u003cp\u003eWith all field input lines completely isolated, adjust your multimeter to its dedicated diode test function. Probe across the main input AC pins relative to the DC terminal rails. A proper healthy element displays a typical forward drop of 0.4V to 0.7V in one path and completely blocks current flow in reverse. An identical near-zero ohm or open-circuit read in both directions confirms a shorted module needing immediate swap-out.\u003c\/p\u003e\n\n\u003ch3\u003eWhy is a fast-break relay contact mandatory on the DC loop for hoisting operations?\u003c\/h3\u003e\n\u003cp\u003eIf only the AC supply lines are switched (AC side interruption), the internal diodes remain arranged as a continuous free-wheeling path across the brake coil. This causes the magnetic holding energy to decay slowly, creating a dangerous 200ms+ delay. Interrupting the DC loop directly forces instant arc-suppression, causing immediate mechanical clamping before a heavy suspended load drops.\u003c\/p\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #eeeeee; margin: 20px 0;\"\u003e\n\n\u003ch3\u003eCross-Reference Guide\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eEWM ME 550\/250-2 Si-S\u003c\/strong\u003e maintains specific electrical alignment with high-voltage industrial standards. In critical system down scenarios, it can be cross-evaluated with industrial heavy series \u003cstrong\u003ehalf-wave rectifier blocks\u003c\/strong\u003e featuring ratings matching 550V AC inputs. Commonly, it shares architectural application layouts with specific high-voltage variations of \u003cstrong\u003eEMOD MOTOREN RE 550\/250-2 Si-S\u003c\/strong\u003e modules or specialized \u003cstrong\u003eSANKI\u003c\/strong\u003e components designed for high-potential grid integration. Always confirm physical mounting dimension clearances and inductive current thresholds prior to executing terminal swaps.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"FAQPage\",\n      \"mainEntity\": [\n        {\n          \"@type\": \"Question\",\n          \"name\": \"What does the \\\"Si-S\\\" designation within the REISSMANN model nomenclature signify?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"The \\\"Si-S\\\" designation indicates integrated heavy-duty Silicon-grade Suppressor arrays inside the potting matrix. These act as surge limits to clamp massive inductive back-EMF spikes generated when switching large motor brake coils.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"How should the input terminals be measured to verify internal rectifier diode status?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Using a multimeter set to Diode Test, check across the AC inputs to the DC outputs. A sound internal diode gives a 0.4V to 0.7V drop in forward bias and infinite reading in reverse. Zero ohms or total open states indicate breakdown.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Why is a fast-break relay contact mandatory on the DC loop for hoisting operations?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Switching only the AC path keeps the module diodes intact as a free-wheeling route, delaying brake engagement by up to 350ms. Breaking the DC loop natively isolates the path, inducing immediate coil field collapse for safe vertical holding.\"\n          }\n        }\n      ]\n    },\n    {\n      \"@type\": \"WebApplication\",\n      \"name\": \"REISSMANN ME 550\/250-2 Half-Wave Rectification Simulator\",\n      \"applicationCategory\": \"IndustrialApplication\",\n      \"operatingSystem\": \"All\",\n      \"browserRequirements\": \"Requires JavaScript execution. Standard HTML5 web layout compliance.\"\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"REISSMANN","offers":[{"title":"Default Title","offer_id":44571715698873,"sku":"234952886471","price":48.69,"currency_code":"USD","in_stock":true}],"url":"https:\/\/koeed.com\/el\/products\/new-ewm-me-550-250-2-si-s-brake-module-half-wave-rectifier-reissmann","provider":"KOEED","version":"1.0","type":"link"}