{"product_id":"demag-rectifer-gf-26094384","title":"Demag GF Rectifier 26094384 Brake Control Module for Industrial Motors","description":"\u003c!-- SEO Introduction --\u003e\r\n\u003cdiv class=\"koeed-container\" style=\"font-family: 'Segoe UI', Arial, sans-serif; color: #333; line-height: 1.6;\"\u003e\r\n  \u003ch2 style=\"color: #0056b3; border-bottom: 2px solid #16c8c8; padding-bottom: 8px;\"\u003e\r\n    Demag Rectifier GF 26094384 | High-Performance Brake Control Module\r\n  \u003c\/h2\u003e\r\n  \u003cp\u003e\r\n    The \u003cstrong\u003eDemag GF 26094384 Brake Rectifier\u003c\/strong\u003e (also known as 26094384 Brake Control Unit) is a critical industrial power supply module designed for Demag Z-series motors. Engineered for high-duty cycle applications, the \u003cstrong\u003eGF 0.8A\u003c\/strong\u003e model is specifically optimized for pole-changing motors with parallel AC supply. By converting 220V-500V AC input into stable DC output, it ensures precise and reliable control of the motor brake system in crane and hoist automation.\r\n  \u003c\/p\u003e\r\n\r\n  \u003c!-- Technical Specifications --\u003e\r\n  \u003ch3 style=\"color: #0056b3;\"\u003eTechnical Specifications\u003c\/h3\u003e\r\n  \u003cdiv style=\"overflow-x: auto;\"\u003e\r\n    \u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 20px;\"\u003e\r\n      \u003cthead\u003e\r\n        \u003ctr style=\"background-color: #16c8c8; color: #fff;\"\u003e\r\n          \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eParameter\u003c\/th\u003e\r\n          \u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eValue\u003c\/th\u003e\r\n        \u003c\/tr\u003e\r\n      \u003c\/thead\u003e\r\n      \u003ctbody\u003e\r\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eDemag (Original Spare Part)\u003c\/td\u003e\r\n        \u003c\/tr\u003e\r\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd; font-weight: bold;\"\u003eModel \/ Type\u003c\/td\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eGF 26094384 \/ GF 0.8 A\u003c\/td\u003e\r\n        \u003c\/tr\u003e\r\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd; font-weight: bold;\"\u003eInput Voltage (AC)\u003c\/td\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e220 V ... 500 V AC\u003c\/td\u003e\r\n        \u003c\/tr\u003e\r\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd; font-weight: bold;\"\u003eMax. Continuous DC Current\u003c\/td\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e0.8 A\u003c\/td\u003e\r\n        \u003c\/tr\u003e\r\n        \u003ctr style=\"background-color: #f4fcfc;\"\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd; font-weight: bold;\"\u003eApplication Range\u003c\/td\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eZBF 63 - ZBF 100 Motors\u003c\/td\u003e\r\n        \u003c\/tr\u003e\r\n        \u003ctr style=\"background-color: #fafafa;\"\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd; font-weight: bold;\"\u003eNet Weight\u003c\/td\u003e\r\n          \u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eapprox. 0.11 kg\u003c\/td\u003e\r\n        \u003c\/tr\u003e\r\n      \u003c\/tbody\u003e\r\n    \u003c\/table\u003e\r\n  \u003c\/div\u003e\r\n\r\n  \u003c!-- Application \u0026 Reliability --\u003e\r\n  \u003ch3 style=\"color: #0056b3;\"\u003eApplication \u0026amp; Industrial Reliability\u003c\/h3\u003e\r\n  \u003cp\u003e\r\n    Unlike standard GE or GS units, the \u003cstrong\u003eGF Series Rectifier\u003c\/strong\u003e is built for complex automation environments. It is the preferred choice for \u003cstrong\u003epole-changing motors\u003c\/strong\u003e where the brake voltage must be synchronized with varying motor speeds. Its modular design allows for easy integration into existing Demag hoist control panels. The internal varistors provide robust overvoltage protection at the switching contacts, preventing inductive spikes from damaging your PLC or motor windings.\r\n  \u003c\/p\u003e\r\n\r\n  \u003c!-- Koeed B2B Tool: Voltage Output Simulator --\u003e\r\n  \u003cdiv class=\"koeed-tool\" style=\"border: 1px dashed #16c8c8; padding: 20px; background: #fff; margin: 20px 0;\"\u003e\r\n    \u003ch3 style=\"margin-top: 0; color: #16c8c8;\"\u003eKoeed FAE Tool: Brake Voltage Estimator\u003c\/h3\u003e\r\n    \u003cp style=\"font-size: 0.9em; color: #666;\"\u003eEstimate DC output based on your industrial AC supply (assuming full-wave rectification).\u003c\/p\u003e\r\n    \u003clabel\u003eInput AC Voltage: \u003cspan id=\"v_val\"\u003e380\u003c\/span\u003eV\u003c\/label\u003e\u003cbr\u003e\r\n    \u003cinput type=\"range\" id=\"ac_input\" min=\"220\" max=\"500\" value=\"380\" style=\"width: 100%; cursor: pointer; accent-color: #16c8c8;\"\u003e\r\n    \u003cdiv style=\"margin-top: 15px; padding: 10px; background: #f4fcfc; border-left: 5px solid #16c8c8;\"\u003e\r\n      \u003cstrong\u003eEstimated DC Output: \u003c\/strong\u003e \u003cspan id=\"dc_output\" style=\"font-size: 1.2em; color: #0056b3; font-weight: bold;\"\u003e171\u003c\/span\u003e V DC\r\n    \u003c\/div\u003e\r\n    \u003cp id=\"safety_note\" style=\"font-size: 0.8em; color: #d9534f; margin-top: 5px;\"\u003e\u003c\/p\u003e\r\n\r\n    \u003cscript\u003e\r\n      const slider = document.getElementById('ac_input');\r\n      const vVal = document.getElementById('v_val');\r\n      const dcOut = document.getElementById('dc_output');\r\n      const safetyNote = document.getElementById('safety_note');\r\n\r\n      slider.oninput = function() {\r\n        const ac = this.value;\r\n        vVal.innerHTML = ac;\r\n        \/\/ Typical Demag half-wave\/bridge logic estimation (approx 0.45 for half-wave in typical GF circuits)\r\n        const dc = (ac * 0.45).toFixed(1); \r\n        dcOut.innerHTML = dc;\r\n        \r\n        if(ac \u003e 460) {\r\n          safetyNote.innerHTML = \"⚠️ Warning: High voltage input. Ensure insulation class matches ZBF motor specs.\";\r\n        } else {\r\n          safetyNote.innerHTML = \"\";\r\n        }\r\n      }\r\n    \u003c\/script\u003e\r\n  \u003c\/div\u003e\r\n\r\n  \u003c!-- Troubleshooting FAQ --\u003e\r\n  \u003ch3 style=\"color: #0056b3;\"\u003eField Service \u0026amp; Troubleshooting FAQ\u003c\/h3\u003e\r\n  \u003cdiv style=\"margin-bottom: 10px;\"\u003e\r\n    \u003cstrong\u003eQ1: The brake does not release even when voltage is applied.\u003c\/strong\u003e\u003cbr\u003e\r\n    \u003cem\u003eFAE Suggestion:\u003c\/em\u003e Measure the DC output at terminals 3 and 4. If DC is 0V but AC input is present, the internal bridge diode is likely failed due to a short-circuited brake coil. Check coil resistance before replacing the rectifier.\r\n  \u003c\/div\u003e\r\n  \u003cdiv style=\"margin-bottom: 10px;\"\u003e\r\n    \u003cstrong\u003eQ2: Can I replace a GF series with a GE series for a pole-changing motor?\u003c\/strong\u003e\u003cbr\u003e\r\n    \u003cem\u003eFAE Suggestion:\u003c\/em\u003e \u003cstrong\u003eNo.\u003c\/strong\u003e GF rectifiers are designed for specific parallel AC supply behaviors. GE units may cause inconsistent braking or delayed release when the motor switches poles.\r\n  \u003c\/div\u003e\r\n  \u003cdiv style=\"margin-bottom: 10px;\"\u003e\r\n    \u003cstrong\u003eQ3: How to achieve faster braking response?\u003c\/strong\u003e\u003cbr\u003e\r\n    \u003cem\u003eFAE Suggestion:\u003c\/em\u003e For \"Fast Braking\" (DC-side switching), an additional contactor must be used to interrupt the DC circuit between the rectifier and the coil. Ensure a varistor is installed across the DC contact to prevent arcing.\r\n  \u003c\/div\u003e\r\n\u003c\/div\u003e","brand":"KOEED","offers":[{"title":"Default Title","offer_id":45135637315769,"sku":null,"price":59.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8476\/7929\/files\/001_1.jpg?v=1751358875","url":"https:\/\/koeed.com\/sv\/products\/demag-rectifer-gf-26094384","provider":"KOEED","version":"1.0","type":"link"}