{"id":11538,"date":"2026-06-02T09:25:06","date_gmt":"2026-06-02T09:25:06","guid":{"rendered":"https:\/\/www.kscranegroup.com\/?post_type=posts&#038;p=11538"},"modified":"2026-06-02T09:25:13","modified_gmt":"2026-06-02T09:25:13","slug":"overhead-crane-electrical-system-failures-causes-troubleshooting-repair-guide","status":"publish","type":"posts","link":"https:\/\/www.kscranegroup.com\/cs\/posts\/overhead-crane-electrical-system-failures-causes-troubleshooting-repair-guide\/","title":{"rendered":"Poruchy elektrick\u00e9ho syst\u00e9mu mostov\u00e9ho je\u0159\u00e1bu: P\u0159\u00ed\u010diny, odstra\u0148ov\u00e1n\u00ed probl\u00e9m\u016f a pr\u016fvodce opravami"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Obsah<\/p><nav><ul><li><a href=\"#part-1-common-types-of-overhead-crane-electrical-system-failures\">\u010c\u00e1st 1: B\u011b\u017en\u00e9 typy poruch elektrick\u00e9ho syst\u00e9mu mostov\u00e9ho je\u0159\u00e1bu<\/a><ul><li><a href=\"#1-ac-motor-failures\">1. Poruchy st\u0159\u00eddav\u00e9ho motoru<\/a><\/li><li><a href=\"#2-ac-electromagnet-failures\">2. Poruchy st\u0159\u00eddav\u00e9ho elektromagnetu<\/a><\/li><li><a href=\"#3-ac-contactor-and-relay-failures\">3. Poruchy styka\u010d\u016f a rel\u00e9 st\u0159\u00eddav\u00e9ho proudu<\/a><\/li><li><a href=\"#4-hydraulic-electromagnet-thruster-failures\">4. Poruchy hydraulick\u00e9ho elektromagnetu (pohonn\u00e9ho za\u0159\u00edzen\u00ed)<\/a><\/li><\/ul><\/li><li><a href=\"#part-2-control-and-circuit-system-failures\">\u010c\u00e1st 2: Poruchy \u0159\u00eddic\u00edho a obvodov\u00e9ho syst\u00e9mu<\/a><ul><li><a href=\"#1-protection-box-knife-switch-closed-\u2192-control-circuit-fuse-blows\">1. No\u017eov\u00fd sp\u00edna\u010d ochrann\u00e9 sk\u0159\u00edn\u011b sepnut\u00fd \u2192 P\u0159ep\u00e1len\u00e1 pojistka \u0159\u00eddic\u00edho obvodu<\/a><\/li><li><a href=\"#2-over-current-relay-trips-when-controller-engaged\">2. Nadproudov\u00e9 rel\u00e9 se vypne, kdy\u017e je regul\u00e1tor zapnut\u00fd<\/a><\/li><li><a href=\"#3-main-contactor-engages-\u2192-incoming-line-fuse-blows\">3. Hlavn\u00ed styka\u010d se zapne \u2192 P\u0159ep\u00e1l\u00ed se pojistka vstupn\u00edho veden\u00ed<\/a><\/li><li><a href=\"#4-controller-engaged-but-motor-doesnt-rotate\">4. \u0158\u00eddic\u00ed jednotka je zapnut\u00e1, ale motor se neot\u00e1\u010d\u00ed<\/a><\/li><li><a href=\"#5-controller-engaged-\u2192-motor-runs-in-one-direction-only\">5. \u0158\u00eddic\u00ed jednotka zapnuta \u2192 Motor b\u011b\u017e\u00ed pouze v jednom sm\u011bru<\/a><\/li><li><a href=\"#6-limit-switch-activated-\u2192-main-contactor-wont-release\">6. Koncov\u00fd sp\u00edna\u010d aktivov\u00e1n \u2192 Hlavn\u00ed styka\u010d se neuvoln\u00ed<\/a><\/li><li><a href=\"#7-controller-returned-to-off-\u2192-main-contactor-wont-release\">7. Regul\u00e1tor se vr\u00e1til do polohy Vypnuto \u2192 Hlavn\u00ed styka\u010d se neuvol\u0148uje<\/a><\/li><li><a href=\"#8-controller-handle-jammed-during-operation\">8. Rukoje\u0165 ovlada\u010de se b\u011bhem provozu zasekla<\/a><\/li><li><a href=\"#9-generator-fails-to-excite-for-crane-with-onboard-generator-set\">9. Gener\u00e1tor selh\u00e1v\u00e1 (u je\u0159\u00e1bu s integrovan\u00fdm gener\u00e1torov\u00fdm agreg\u00e1tem)<\/a><\/li><li><a href=\"#10-power-cut-but-protection-box-contactor-wont-drop-out-control-circuit-de-energized\">10. V\u00fdpadek proudu, ale styka\u010d ochrann\u00e9 sk\u0159\u00edn\u011b se nerozpoj\u00ed (\u0159\u00eddic\u00ed obvod je bez nap\u00e1jen\u00ed)<\/a><\/li><\/ul><\/li><li><a href=\"#quick-diagnostic-flow-for-overhead-crane-electrical-problems\">Rychl\u00fd diagnostick\u00fd postup pro elektrick\u00e9 probl\u00e9my s mostov\u00fdm je\u0159\u00e1bem<\/a><\/li><li><a href=\"#replace-vs-repair-guide-for-crane-electrical-components\">Pr\u016fvodce v\u00fdm\u011bnou vs. opravou elektrick\u00fdch komponent je\u0159\u00e1bu<\/a><\/li><li><a href=\"#preventive-maintenance-for-overhead-crane-electrical-systems\">Preventivn\u00ed \u00fadr\u017eba elektrick\u00fdch syst\u00e9m\u016f mostov\u00fdch je\u0159\u00e1b\u016f<\/a><ul><li><a href=\"#inspect-electrical-connections-regularly\">Pravideln\u011b kontrolujte elektrick\u00e9 p\u0159ipojen\u00ed<\/a><\/li><li><a href=\"#monitor-motor-temperature\">Sledov\u00e1n\u00ed teploty motoru<\/a><\/li><li><a href=\"#check-contactors-and-relays\">Zkontrolujte styka\u010de a rel\u00e9<\/a><\/li><li><a href=\"#test-limit-switches-and-safety-devices\">Testov\u00e1n\u00ed koncov\u00fdch sp\u00edna\u010d\u016f a bezpe\u010dnostn\u00edch za\u0159\u00edzen\u00ed<\/a><\/li><li><a href=\"#follow-scheduled-electrical-inspections\">Dodr\u017eujte pl\u00e1novan\u00e9 elektroinstalace<\/a><\/li><\/ul><\/li><li><a href=\"#need-expert-support-for-overhead-crane-electrical-system-failures\">Pot\u0159ebujete odbornou pomoc p\u0159i poruch\u00e1ch elektrick\u00e9ho syst\u00e9mu mostov\u00e9ho je\u0159\u00e1bu?<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Poruchy elektrick\u00fdch syst\u00e9m\u016f mostov\u00fdch je\u0159\u00e1b\u016f jsou jednou z hlavn\u00edch p\u0159\u00ed\u010din prostoj\u016f je\u0159\u00e1b\u016f ve v\u00fdrobn\u00edch z\u00e1vodech, skladech, ocel\u00e1rn\u00e1ch a za\u0159\u00edzen\u00edch t\u011b\u017ek\u00e9ho pr\u016fmyslu. Ve srovn\u00e1n\u00ed s mechanick\u00fdmi poruchami je diagnostika elektrick\u00fdch poruch \u010dasto obt\u00ed\u017en\u011bj\u0161\u00ed, proto\u017ee p\u0159\u00edznaky mohou b\u00fdt zav\u00e1d\u011bj\u00edc\u00ed.<\/p>\n\n\n\n<p>Nap\u0159\u00edklad motor, kter\u00fd se nespust\u00ed, m\u016f\u017ee b\u00fdt zp\u016fsoben sp\u00e1len\u00fdm styka\u010dem, vadn\u00fdm koncov\u00fdm sp\u00edna\u010dem, sp\u00e1lenou pojistkou, n\u00edzk\u00fdm nap\u00e1jec\u00edm nap\u011bt\u00edm nebo jednodu\u0161e uvoln\u011bn\u00fdm elektrick\u00fdm spojen\u00edm. Stejn\u011b tak p\u0159eh\u0159\u00e1t\u00ed, abnorm\u00e1ln\u00ed vibrace, jisk\u0159en\u00ed a ob\u010dasn\u00e9 vyp\u00edn\u00e1n\u00ed \u010dasto nazna\u010duj\u00ed hlub\u0161\u00ed probl\u00e9my uvnit\u0159 elektrick\u00e9ho syst\u00e9mu je\u0159\u00e1bu.<\/p>\n\n\n\n<p>Nejb\u011b\u017en\u011bj\u0161\u00ed <a href=\"https:\/\/www.kscranegroup.com\/cs\/overhead-cranes\/\">mostov\u00fd je\u0159\u00e1b<\/a> Mezi poruchy elektrick\u00e9ho syst\u00e9mu pat\u0159\u00ed p\u0159eh\u0159\u00e1t\u00ed motoru, po\u0161kozen\u00ed styka\u010d\u016f a rel\u00e9, poruchy elektromagnet\u016f, poruchy \u0159\u00eddic\u00edch obvod\u016f, poruchy koncov\u00fdch sp\u00edna\u010d\u016f a probl\u00e9my s nap\u00e1jen\u00edm.<\/p>\n\n\n\n<p>Tato p\u0159\u00edru\u010dka vysv\u011btluje, jak identifikovat, \u0159e\u0161it probl\u00e9my a opravovat poruchy elektrick\u00e9ho syst\u00e9mu mostov\u00e9ho je\u0159\u00e1bu pomoc\u00ed systematick\u00e9ho diagnostick\u00e9ho p\u0159\u00edstupu \u2013 od kontroly na \u00farovni sou\u010d\u00e1st\u00ed a\u017e po \u00faplnou anal\u00fdzu \u0159\u00eddic\u00edch obvod\u016f.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1920\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/1Overhead-Crane-Electrical-System-Failures-Motor-scaled.jpg\" alt=\"\" class=\"wp-image-11539\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/1Overhead-Crane-Electrical-System-Failures-Motor-scaled.jpg 2560w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/1Overhead-Crane-Electrical-System-Failures-Motor-1536x1152.jpg 1536w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/1Overhead-Crane-Electrical-System-Failures-Motor-2048x1536.jpg 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"part-1-common-types-of-overhead-crane-electrical-system-failures\">\u010c\u00e1st 1: B\u011b\u017en\u00e9 typy poruch elektrick\u00e9ho syst\u00e9mu mostov\u00e9ho je\u0159\u00e1bu<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-ac-motor-failures\">1. Poruchy st\u0159\u00eddav\u00e9ho motoru<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"1-1-entire-motor-evenly-overheating\">1.1 Rovnom\u011brn\u00e9 p\u0159eh\u0159\u00edv\u00e1n\u00ed cel\u00e9ho motoru<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Zv\u00fd\u0161en\u00fd pracovn\u00ed cyklus (JC%) zp\u016fsobuje p\u0159et\u00ed\u017een\u00ed<\/td><td>Sni\u017ete intenzitu pr\u00e1ce je\u0159\u00e1bu nebo jej nahra\u010fte motorem dimenzovan\u00fdm pro skute\u010dn\u00fd JC%.<\/td><\/tr><tr><td>Provoz pod n\u00edzk\u00fdm nap\u011bt\u00edm<\/td><td>Zastavte provoz, pokud nap\u011bt\u00ed klesne pod jmenovitou hodnotu 10%<\/td><\/tr><tr><td>Nespr\u00e1vn\u00fd v\u00fdb\u011br motoru pro danou aplikaci<\/td><td>Vyberte vhodn\u00fd motor dle skute\u010dn\u00fdch charakteristik zat\u00ed\u017een\u00ed<\/td><\/tr><tr><td>Zm\u011bny po \u00fadr\u017eb\u011b zm\u011bnily v\u00fdkonnostn\u00ed parametry je\u0159\u00e1bu<\/td><td>Obnovit p\u016fvodn\u00ed parametry n\u00e1vrhu<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"1-2-stator-localized-overheating\">1.2 Lokalizovan\u00e9 p\u0159eh\u0159\u00e1t\u00ed statoru<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Lok\u00e1ln\u00ed zkrat mezi statorov\u00fdmi k\u0159em\u00edkov\u00fdmi ocelov\u00fdmi lamelami<\/td><td>Odstra\u0148te p\u0159\u00ed\u010dinu zkratu; na opraven\u00e9 m\u00edsto naneste izola\u010dn\u00ed lak<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"1-3-stator-winding-localized-overheating\">1.3 Lokalizovan\u00e9 p\u0159eh\u0159\u00e1t\u00ed vinut\u00ed statoru<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Chyba zapojen\u00ed do troj\u00faheln\u00edku\/hv\u011bzdy (\u0394\/Y).<\/td><td>Zkontrolujte a opravte konfiguraci zapojen\u00ed<\/td><\/tr><tr><td>Dva body v jednom f\u00e1zov\u00e9m vinut\u00ed zkratovan\u00e9 k pouzdru<\/td><td>Opravte po\u0161kozen\u00e9 f\u00e1zov\u00e9 vinut\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"1-4-rotor-temperature-rises-stator-draws-high-current-motor-wont-reach-full-speed-at-rated-load\">1.4 Teplota rotoru stoup\u00e1, stator odeb\u00edr\u00e1 vysok\u00fd proud, motor nedosahuje pln\u00fdch ot\u00e1\u010dek p\u0159i jmenovit\u00e9m zat\u00ed\u017een\u00ed<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>\u0160patn\u00fd kontakt na svork\u00e1ch vinut\u00ed, v neutr\u00e1ln\u00edm bod\u011b nebo ve paraleln\u00edch vinut\u00edch<\/td><td>Kontrola a oprava p\u00e1jen\u00fdch spoj\u016f<\/td><\/tr><tr><td>\u0160patn\u00fd kontakt mezi vinut\u00edm a sb\u011brn\u00fdm krou\u017ekem<\/td><td>Zkontrolujte a opravte p\u0159ipojen\u00ed<\/td><\/tr><tr><td>\u0160patn\u00fd kontakt v mechanismu kart\u00e1\u010de<\/td><td>Kontrola a se\u0159\u00edzen\u00ed p\u0159evodu kart\u00e1\u010de<\/td><\/tr><tr><td>\u0160patn\u00fd kontakt v obvodu rotoru<\/td><td>Zkontrolujte uvoln\u011bn\u00ed nebo \u0161patn\u00fd kontakt; otestujte odpor, v p\u0159\u00edpad\u011b p\u0159eru\u0161en\u00ed obvodu vym\u011b\u0148te<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"1-5-motor-vibration-during-operation\">1.5 Vibrace motoru b\u011bhem provozu<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>H\u0159\u00eddel motoru a h\u0159\u00eddel reduktoru nejsou soust\u0159edn\u00e9<\/td><td>Vyrovn\u00e1n\u00ed h\u0159\u00eddel\u00ed<\/td><\/tr><tr><td>Po\u0161kozen\u00ed nebo opot\u0159eben\u00ed lo\u017eiska<\/td><td>Vym\u011b\u0148te lo\u017eisko<\/td><\/tr><tr><td>Deformace rotoru<\/td><td>Kontrola a oprava rotoru<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"1-6-abnormal-noise-during-operation\">1.6 Abnorm\u00e1ln\u00ed hluk b\u011bhem provozu<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>F\u00e1zov\u00fd posun statoru (chyba zapojen\u00ed)<\/td><td>Zkontrolujte a opravte zapojen\u00ed<\/td><\/tr><tr><td>J\u00e1dro statoru nen\u00ed pevn\u011b stla\u010deno<\/td><td>Zkontrolujte stator a opravte jej<\/td><\/tr><tr><td>Opot\u0159eben\u00ed lo\u017eiska<\/td><td>Vym\u011b\u0148te lo\u017eisko<\/td><\/tr><tr><td>Roz\u0161\u00ed\u0159en\u00ed dr\u00e1\u017ekov\u00e9ho kl\u00ednu<\/td><td>Od\u0159\u00edzn\u011bte roz\u0161\u00ed\u0159enou kl\u00ednovou \u010d\u00e1st nebo ji vym\u011b\u0148te<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"1-7-motor-speed-drops-under-load\">1.7 Pokles ot\u00e1\u010dek motoru p\u0159i zat\u00ed\u017een\u00ed<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Zkrat na p\u0159\u00edpojk\u00e1ch na konci rotoru<\/td><td>Lokalizace a odstran\u011bn\u00ed zkratu<\/td><\/tr><tr><td>Vinut\u00ed rotoru uzemn\u011bn\u00e9 ve dvou bodech<\/td><td>Zkontrolujte ka\u017edou c\u00edvku, opravte po\u0161kozenou izolaci<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"1-8-rotor-rubbing-against-stator-during-operation\">1.8 T\u0159en\u00ed rotoru o stator b\u011bhem provozu<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Opot\u0159ebovan\u00e9 lo\u017eisko, \u0161patn\u011b vyrovnan\u00fd koncov\u00fd kryt, deformovan\u00e9 j\u00e1dro statoru nebo rotoru<\/td><td>Vym\u011b\u0148te vadn\u00e9 lo\u017eisko; opravte polohu koncov\u00e9ho krytu; odstra\u0148te ot\u0159epy z j\u00e1dra statoru\/rotoru<\/td><\/tr><tr><td>Nespr\u00e1vn\u00e9 zapojen\u00ed vinut\u00ed statoru zp\u016fsobuj\u00edc\u00ed magnetickou nerovnov\u00e1hu<\/td><td>Zkontrolujte a opravte zapojen\u00ed c\u00edvek; ov\u011b\u0159te, \u017ee proud v ka\u017ed\u00e9 f\u00e1zi je stejn\u00fd<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"1-9-sparking-at-brushes-or-scorched-slip-rings\">1.9 Jisk\u0159en\u00ed na kart\u00e1\u010d\u00edch nebo op\u00e1len\u00fdch sb\u011brn\u00fdch krou\u017ec\u00edch<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>\u0160patn\u011b usazen\u00e9 kart\u00e1\u010de<\/td><td>Znovu usa\u010fte kart\u00e1\u010de brou\u0161en\u00edm<\/td><\/tr><tr><td>Kart\u00e1\u010de p\u0159\u00edli\u0161 voln\u00e9 v dr\u017e\u00e1c\u00edch<\/td><td>Upravte usazen\u00ed kart\u00e1\u010de nebo jej vym\u011b\u0148te za kart\u00e1\u010d spr\u00e1vn\u00e9 velikosti<\/td><\/tr><tr><td>Zne\u010di\u0161t\u011bn\u00e9 kart\u00e1\u010de a sb\u011brn\u00e9 krou\u017eky<\/td><td>O\u010dist\u011bte sb\u011brn\u00e9 krou\u017eky alkoholem<\/td><\/tr><tr><td>Nerovn\u00fd povrch sb\u011brac\u00edho krou\u017eku zp\u016fsobuj\u00edc\u00ed odskakov\u00e1n\u00ed kart\u00e1\u010d\u016f<\/td><td>Obr\u00e1b\u011bn\u00ed a le\u0161t\u011bn\u00ed povrchu sb\u011brac\u00edho krou\u017eku<\/td><\/tr><tr><td>Nedostate\u010dn\u00fd p\u0159\u00edtlak kart\u00e1\u010de<\/td><td>Upravte na 18\u201320 kPa<\/td><\/tr><tr><td>Nespr\u00e1vn\u00e1 t\u0159\u00edda kart\u00e1\u010de<\/td><td>Nahra\u010fte spr\u00e1vnou specifikac\u00ed<\/td><\/tr><tr><td>Nerovnom\u011brn\u00e9 rozlo\u017een\u00ed proudu mezi kart\u00e1\u010di<\/td><td>Zkontrolujte p\u0159ipojen\u00ed podava\u010de dr\u017e\u00e1ku kart\u00e1\u010d\u016f a opravte je<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"1-10-slip-ring-open-circuit\">1.10 Obvod s rozpojen\u00fdm sb\u011brn\u00fdm krou\u017ekem<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Zne\u010di\u0161t\u011bn\u00e1 sestava sb\u011brac\u00edho krou\u017eku a kart\u00e1\u010de<\/td><td>D\u016fkladn\u011b vy\u010dist\u011bte<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-ac-electromagnet-failures\">2. Poruchy st\u0159\u00eddav\u00e9ho elektromagnetu<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"2-1-coil-overheating\">2.1 P\u0159eh\u0159\u00e1t\u00ed c\u00edvky<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>P\u0159et\u00ed\u017een\u00ed elektromagnetu (nadm\u011brn\u00e1 s\u00edla pru\u017einy)<\/td><td>Nastaven\u00ed nap\u011bt\u00ed pru\u017einy<\/td><\/tr><tr><td>Mezi pevn\u00fdmi a pohybliv\u00fdmi \u010d\u00e1stmi magnetick\u00e9ho obvodu existuje mezera<\/td><td>Odstra\u0148te mezeru<\/td><\/tr><tr><td>Nap\u011bt\u00ed c\u00edvky neodpov\u00edd\u00e1 nap\u00e1jec\u00edmu nap\u011bt\u00ed<\/td><td>Vym\u011b\u0148te c\u00edvku nebo zm\u011b\u0148te zp\u016fsob p\u0159ipojen\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"2-2-excessive-humming-noise-during-operation\">2.2 Nadm\u011brn\u00e9 hu\u010den\u00ed\/hluk b\u011bhem provozu<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Elektromagnet p\u0159et\u00ed\u017een\u00fd<\/td><td>Nastaven\u00ed nap\u011bt\u00ed pru\u017einy<\/td><\/tr><tr><td>Ne\u010distoty na pracovn\u00edch ploch\u00e1ch magnetick\u00e9ho obvodu<\/td><td>D\u016fkladn\u011b vy\u010dist\u011bte<\/td><\/tr><tr><td>\u0160patn\u00e9 zarovn\u00e1n\u00ed magnetick\u00e9ho syst\u00e9mu<\/td><td>Se\u0159\u00edzen\u00ed mechanick\u00fdch sou\u010d\u00e1st\u00ed brzd, oprava nesouososti<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"2-3-unable-to-overcome-spring-force\">2.3 Nelze p\u0159ekonat s\u00edlu pru\u017einy<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Elektromagnet p\u0159et\u00ed\u017een\u00fd \/ P\u0159\u00edli\u0161 vysok\u00e1 s\u00edla hlavn\u00ed pru\u017einy<\/td><td>Se\u0159\u00edzen\u00ed nap\u011bt\u00ed hlavn\u00ed brzdov\u00e9 pru\u017einy<\/td><\/tr><tr><td>N\u00edzk\u00e9 nap\u00e1jec\u00ed nap\u011bt\u00ed<\/td><td>P\u0159eru\u0161te provoz, dokud se neobnov\u00ed nap\u011bt\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-ac-contactor-and-relay-failures\">3. Poruchy styka\u010d\u016f a rel\u00e9 st\u0159\u00eddav\u00e9ho proudu<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"3-1-coil-overheating\">3.1 P\u0159eh\u0159\u00e1t\u00ed c\u00edvky<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>C\u00edvka p\u0159et\u00ed\u017een\u00e1<\/td><td>Sni\u017ete tlak pohybliv\u00e9ho kontaktu oproti pevn\u00e9mu kontaktu<\/td><\/tr><tr><td>Pohybliv\u00e1 \u010d\u00e1st magnetick\u00e9ho obvodu nedosahuje na pevnou \u010d\u00e1st<\/td><td>Odstra\u0148te nesouosost, zasek\u00e1v\u00e1n\u00ed, ne\u010distoty; v p\u0159\u00edpad\u011b po\u0161kozen\u00ed vym\u011b\u0148te c\u00edvku.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"3-2-excessive-contactor-buzzing\">3.2 Nadm\u011brn\u00e9 bzu\u010den\u00ed styka\u010de<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>C\u00edvka p\u0159et\u00ed\u017een\u00e1<\/td><td>Sni\u017ete kontaktn\u00ed tlak<\/td><\/tr><tr><td>Ne\u010distoty na povr\u0161\u00edch magnetick\u00fdch obvod\u016f<\/td><td>\u010cist\u00e9 povrchy<\/td><\/tr><tr><td>Zasek\u00e1v\u00e1n\u00ed v syst\u00e9mu samonastavov\u00e1n\u00ed magnetick\u00e9 dr\u00e1hy<\/td><td>Odstra\u0148te p\u0159ek\u00e1\u017eku<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"3-3-contact-overheating-or-burned-destroyed\">3.3 P\u0159eh\u0159\u00e1t\u00ed nebo sp\u00e1len\u00ed\/zni\u010den\u00ed kontaktu<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Nedostate\u010dn\u00fd p\u0159\u00edtlak<\/td><td>Upravte tlak<\/td><\/tr><tr><td>\u0160pinav\u00e9 kontakty<\/td><td>Vy\u010dist\u011bte nebo vym\u011b\u0148te<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"3-4-main-contactor-wont-engage\">3.4 Hlavn\u00ed styka\u010d se nezapne<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>No\u017eov\u00fd sp\u00edna\u010d nebo nouzov\u00fd sp\u00edna\u010d nen\u00ed sepnut\u00fd<\/td><td>Zav\u0159ete sp\u00edna\u010de<\/td><\/tr><tr><td>Sp\u00edna\u010d poklopu\/p\u0159\u00edstupov\u00fdch dve\u0159\u00ed otev\u0159en\u00fd<\/td><td>Zav\u0159ete sp\u00edna\u010d dve\u0159\u00ed<\/td><\/tr><tr><td>Rukoje\u0165 ovlada\u010de nen\u00ed v nulov\u00e9 poloze<\/td><td>Vr\u00e1tit rukoje\u0165 na nulu<\/td><\/tr><tr><td>Pojistka \u0159\u00eddic\u00edho obvodu p\u0159ep\u00e1len\u00e1<\/td><td>Zkontrolujte nebo vym\u011b\u0148te pojistku<\/td><\/tr><tr><td>\u017d\u00e1dn\u00e9 nap\u011bt\u00ed na s\u00edti<\/td><td>Zkontrolujte s\u00ed\u0165ov\u00e9 nap\u00e1jen\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"3-5-frequent-tripping-during-crane-operation\">3.5 \u010cast\u00e9 zap\u00edn\u00e1n\u00ed b\u011bhem provozu je\u0159\u00e1bu<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Nedostate\u010dn\u00fd p\u0159\u00edtlak<\/td><td>Nastaven\u00ed p\u0159\u00edtlaku<\/td><\/tr><tr><td>Sp\u00e1len\u00e9 kontakty<\/td><td>Vym\u011b\u0148te kontakty nebo je obruste a opravte<\/td><\/tr><tr><td>\u0160pinav\u00e9 kontakty<\/td><td>\u010cist\u00fd<\/td><\/tr><tr><td>P\u0159et\u00ed\u017een\u00ed zp\u016fsobuj\u00edc\u00ed nadm\u011brn\u00fd proud<\/td><td>Sni\u017ete z\u00e1t\u011b\u017e<\/td><\/tr><tr><td>\u0160patn\u00fd kontakt mezi kolektorem a nap\u00e1jec\u00ed kolejnic\u00ed<\/td><td>Oprava kolejnicov\u00e9ho nebo p\u0159\u00edkopov\u00e9ho syst\u00e9mu vodi\u010d\u016f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-hydraulic-electromagnet-thruster-failures\">4. Poruchy hydraulick\u00e9ho elektromagnetu (pohonn\u00e9ho za\u0159\u00edzen\u00ed)<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"4-1-push-rod-wont-move-after-power-on\">4.1 Tlakov\u00e1 ty\u010d se po zapnut\u00ed nepohybuje<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Zaseknut\u00e1 tla\u010dn\u00e1 ty\u010d<\/td><td>Odstra\u0148te p\u0159ek\u00e1\u017eku<\/td><\/tr><tr><td>Nap\u00e1jec\u00ed nap\u011bt\u00ed pod 85% jmenovit\u00e9ho<\/td><td>Zvy\u0161te nap\u011bt\u00ed na jmenovitou \u00farove\u0148<\/td><\/tr><tr><td>\u010casov\u00e9 rel\u00e9 (na k\u0159em\u00edkov\u00e9m usm\u011br\u0148ova\u010di ZLO) nastaveno p\u0159\u00edli\u0161 kr\u00e1tce<\/td><td>Nastavte na p\u0159ibli\u017en\u011b 0,5 s<\/td><\/tr><tr><td>Usm\u011br\u0148ovac\u00ed jednotka nefunguje<\/td><td>Oprava nebo v\u00fdm\u011bna<\/td><\/tr><tr><td>Po\u0161kozen\u00e1 usm\u011br\u0148ovac\u00ed jednotka<\/td><td>Oprava nebo v\u00fdm\u011bna<\/td><\/tr><tr><td>\u010casov\u00e9 rel\u00e9 - norm\u00e1ln\u011b otev\u0159en\u00fd kontakt se nezap\u00edn\u00e1<\/td><td>Zkontrolujte a opravte kontakt<\/td><\/tr><tr><td>\u017d\u00e1dn\u00fd olej nebo z\u00e1va\u017en\u00fd \u00fanik oleje<\/td><td>Oprava t\u011bsn\u011bn\u00ed, dopln\u011bn\u00ed oleje<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"4-2-push-rod-stroke-too-short\">4.2 Zdvih tla\u010dn\u00e9 ty\u010de je p\u0159\u00edli\u0161 kr\u00e1tk\u00fd<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Nedostatek oleje<\/td><td>Dopl\u0148te olej<\/td><\/tr><tr><td>Vzduch zachycen\u00fd mezi p\u00edstem a lo\u017eiskem<\/td><td>Odvzdu\u0161n\u011bn\u00ed<\/td><\/tr><tr><td>P\u0159\u00edli\u0161 n\u00edzk\u00e9 nastaven\u00ed zdvihu<\/td><td>Vhodn\u011b upravte zdvih<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"4-3-stroke-gradually-decreases-after-operation\">4.3 Zdvih se po operaci postupn\u011b sni\u017euje<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>\u00danik oleje z v\u00e1lce<\/td><td>Vym\u011b\u0148te v\u00e1lec<\/td><\/tr><tr><td>Disk ventilu ozuben\u00e9ho typu nebo disk ventilu s pohybliv\u00fdm j\u00e1drem net\u011bsn\u00ed spr\u00e1vn\u011b<\/td><td>Odstra\u0148te mechanick\u00e9 ne\u010distoty z ventilov\u00fdch kotou\u010d\u016f<\/td><\/tr><tr><td>T\u011bsnic\u00ed krou\u017eek siln\u011b po\u0161kozen<\/td><td>Vym\u011b\u0148te t\u011bsnic\u00ed krou\u017eek<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"4-4-start-up-time-too-long\">4.4 P\u0159\u00edli\u0161 dlouh\u00e1 doba spou\u0161t\u011bn\u00ed<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>P\u0159\u00edli\u0161 n\u00edzk\u00e9 nap\u011bt\u00ed<\/td><td>Zvy\u0161te nap\u011bt\u00ed<\/td><\/tr><tr><td>Zaseknut\u00e9 pohybliv\u00e9 \u010d\u00e1sti<\/td><td>Odstra\u0148te p\u0159ek\u00e1\u017eku<\/td><\/tr><tr><td>P\u0159\u00edli\u0161 vysok\u00fd brzdn\u00fd moment brzdy<\/td><td>Upravte brzdn\u00fd moment na jmenovitou hodnotu<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"4-5-braking-time-too-long\">4.5 P\u0159\u00edli\u0161 dlouh\u00e1 doba brzd\u011bn\u00ed<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Kontakt \u010dasov\u00e9ho rel\u00e9 se nerozpoj\u00ed<\/td><td>Zkontrolujte a opravte kontakt<\/td><\/tr><tr><td>Zaseknut\u00e9 pohybliv\u00e9 \u010d\u00e1sti<\/td><td>Odstra\u0148te p\u0159ek\u00e1\u017eku<\/td><\/tr><tr><td>Zablokovan\u00fd pr\u016fchod oleje<\/td><td>Voln\u00fd pr\u016fchod oleje<\/td><\/tr><tr><td>Mechanick\u00e1 z\u00e1vada v brzdov\u00e9m syst\u00e9mu<\/td><td>Oprava mechanick\u00e9 z\u00e1vady<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"part-2-control-and-circuit-system-failures\">\u010c\u00e1st 2: Poruchy \u0159\u00eddic\u00edho a obvodov\u00e9ho syst\u00e9mu<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/2Overhead-Crane-Electrical-System-Failures-Electromagnet.jpg\" alt=\"\" class=\"wp-image-11540\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/2Overhead-Crane-Electrical-System-Failures-Electromagnet.jpg 600w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/2Overhead-Crane-Electrical-System-Failures-Electromagnet-150x150.jpg 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-protection-box-knife-switch-closed-\u2192-control-circuit-fuse-blows\">1. No\u017eov\u00fd sp\u00edna\u010d ochrann\u00e9 sk\u0159\u00edn\u011b sepnut\u00fd \u2192 P\u0159ep\u00e1len\u00e1 pojistka \u0159\u00eddic\u00edho obvodu<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>F\u00e1zov\u00fd zkrat v \u0159\u00eddic\u00edm obvodu<\/td><td>Pomoc\u00ed megaohmmetru vyhledejte uzemn\u011bnou f\u00e1zi a odstra\u0148te ji.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-over-current-relay-trips-when-controller-engaged\">2. Nadproudov\u00e9 rel\u00e9 se vypne, kdy\u017e je regul\u00e1tor zapnut\u00fd<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Nespr\u00e1vn\u00e9 nastaven\u00ed rel\u00e9 pro motor<\/td><td>Upravte nastaven\u00ed: I_set = (2,25\u20132,5) \u00d7 I_rated<\/td><\/tr><tr><td>Zaseknut\u00ed mechanick\u00e9 p\u0159evodovky zp\u016fsobuj\u00edc\u00ed p\u0159et\u00ed\u017een\u00ed motoru<\/td><td>Lokalizace a odstran\u011bn\u00ed mechanick\u00e9 p\u0159ek\u00e1\u017eky<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-main-contactor-engages-\u2192-incoming-line-fuse-blows\">3. Hlavn\u00ed styka\u010d se zapne \u2192 P\u0159ep\u00e1l\u00ed se pojistka vstupn\u00edho veden\u00ed<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>F\u00e1zov\u00e9 zkraty na dan\u00e9 f\u00e1zi<\/td><td>Lokalizace a odstran\u011bn\u00ed zemn\u00edho zkratu<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-controller-engaged-but-motor-doesnt-rotate\">4. \u0158\u00eddic\u00ed jednotka je zapnut\u00e1, ale motor se neot\u00e1\u010d\u00ed<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Jedna f\u00e1ze p\u0159eru\u0161ena \u2013 motor hu\u010d\u00ed<\/td><td>Lokalizujte p\u0159eru\u0161en\u00ed a znovu jej spojte<\/td><\/tr><tr><td>Rozpojen\u00fd obvod rotoru<\/td><td>Lokalizujte p\u0159eru\u0161en\u00ed a znovu jej spojte<\/td><\/tr><tr><td>\u017d\u00e1dn\u00e9 nap\u011bt\u00ed na s\u00edti<\/td><td>Lokalizujte p\u0159eru\u0161en\u00ed a znovu jej spojte<\/td><\/tr><tr><td>Kontakty \u0159\u00eddic\u00ed jednotky se ve skute\u010dnosti nedot\u00fdkaj\u00ed<\/td><td>Zkontrolujte a opravte ovlada\u010d<\/td><\/tr><tr><td>Porucha kart\u00e1\u010de sb\u011bra\u010de<\/td><td>Kontrola a oprava kolektoru<\/td><\/tr><tr><td>Porucha brzdy \u2013 nejde ji uvolnit<\/td><td>Kontrola a oprava brzdy<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Rychl\u00e1 kontrola:<\/strong> Pokud motor hu\u010d\u00ed, ale neot\u00e1\u010d\u00ed se, jedn\u00e1 se t\u00e9m\u011b\u0159 v\u017edy o jednof\u00e1zov\u00fd probl\u00e9m. Nejprve zkontrolujte nap\u00e1jen\u00ed a zapojen\u00ed obvodu rotoru.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"5-controller-engaged-\u2192-motor-runs-in-one-direction-only\">5. \u0158\u00eddic\u00ed jednotka zapnuta \u2192 Motor b\u011b\u017e\u00ed pouze v jednom sm\u011bru<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>\u0160patn\u00e9 kontakty pro zp\u011btn\u00fd sm\u011br ot\u00e1\u010den\u00ed regul\u00e1toru nebo vadn\u00e9 mechanick\u00e9 blokov\u00e1n\u00ed<\/td><td>Zkontrolujte ovlada\u010d, se\u0159i\u010fte kontakty<\/td><\/tr><tr><td>Porucha v rozvodn\u00e9 elektroinstalaci<\/td><td>Pou\u017eijte metodu spojovac\u00edho dr\u00e1tu k lokalizaci a oprav\u011b z\u00e1vady<\/td><\/tr><tr><td>Pojezdov\u00fd mechanismus v krajn\u00ed poloze, koncov\u00fd sp\u00edna\u010d aktivov\u00e1n<\/td><td>M\u016f\u017ee b\u011b\u017eet pouze jedn\u00edm sm\u011brem \u2013 norm\u00e1ln\u00ed chov\u00e1n\u00ed<\/td><\/tr><tr><td>Porucha koncov\u00e9ho sp\u00edna\u010de<\/td><td>Zkontrolujte koncov\u00fd sp\u00edna\u010d a odstra\u0148te z\u00e1vadu<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"6-limit-switch-activated-\u2192-main-contactor-wont-release\">6. Koncov\u00fd sp\u00edna\u010d aktivov\u00e1n \u2192 Hlavn\u00ed styka\u010d se neuvoln\u00ed<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>P\u0159eru\u0161en\u00fd obvod v obvodu koncov\u00e9ho sp\u00edna\u010de<\/td><td>Zkontrolujte a opravte p\u0159eru\u0161en\u00fd obvod<\/td><\/tr><tr><td>\u0160patn\u00e9 zapojen\u00ed kabel\u00e1\u017ee k \u0159\u00eddic\u00ed jednotce<\/td><td>Spr\u00e1vn\u00e9 zapojen\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"7-controller-returned-to-off-\u2192-main-contactor-wont-release\">7. Regul\u00e1tor se vr\u00e1til do polohy Vypnuto \u2192 Hlavn\u00ed styka\u010d se neuvol\u0148uje<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Vadn\u00fd areta\u010dn\u00ed mechanismus<\/td><td>Opravte z\u00e1padku<\/td><\/tr><tr><td>Kontakty zaseknut\u00e9 v zh\u00e1\u0161ec\u00ed komor\u011b<\/td><td>Upravte polohu kontaktu<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"8-controller-handle-jammed-during-operation\">8. Rukoje\u0165 ovlada\u010de se b\u011bhem provozu zasekla<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Vadn\u00fd areta\u010dn\u00ed mechanismus<\/td><td>Nastaven\u00ed areta\u010dn\u00edho tlaku<\/td><\/tr><tr><td>Kontakty sva\u0159en\u00e9 dohromady<\/td><td>Vy\u010di\u0161t\u011bn\u00ed kontakt\u016f soubor\u016f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"9-generator-fails-to-excite-for-crane-with-onboard-generator-set\">9. Gener\u00e1tor selh\u00e1v\u00e1 (u je\u0159\u00e1bu s integrovan\u00fdm gener\u00e1torov\u00fdm agreg\u00e1tem)<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Budic\u00ed obvod otev\u0159en\u00fd<\/td><td>Zkontrolujte budic\u00ed obvod<\/td><\/tr><tr><td>Gener\u00e1tor se ot\u00e1\u010d\u00ed v opa\u010dn\u00e9m sm\u011bru<\/td><td>Proho\u010fte dv\u011b f\u00e1ze zapojen\u00ed rotoru pohonn\u00e9ho obvodu<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"10-power-cut-but-protection-box-contactor-wont-drop-out-control-circuit-de-energized\">10. V\u00fdpadek proudu, ale styka\u010d ochrann\u00e9 sk\u0159\u00edn\u011b se nerozpoj\u00ed (\u0159\u00eddic\u00ed obvod je bez nap\u00e1jen\u00ed)<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Mo\u017en\u00e1 p\u0159\u00ed\u010dina<\/th><th>N\u00e1pravn\u00e1 opat\u0159en\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Uzemn\u011bn\u00ed nebo zkrat n\u011bkde v \u0159\u00eddic\u00edm obvodu<\/td><td>Lokalizovat a eliminovat<\/td><\/tr><tr><td>Kontakty styka\u010de sva\u0159en\u00e9 \u2013 hlavn\u00ed obvod z\u016fst\u00e1v\u00e1 pod nap\u011bt\u00edm<\/td><td>Zapi\u0161te sp\u00e1len\u00e9 kontakty pro obnoven\u00ed spr\u00e1vn\u00e9ho kontaktu<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"quick-diagnostic-flow-for-overhead-crane-electrical-problems\">Rychl\u00fd diagnostick\u00fd postup pro elektrick\u00e9 probl\u00e9my s mostov\u00fdm je\u0159\u00e1bem<\/h2>\n\n\n\n<p>P\u0159i odstra\u0148ov\u00e1n\u00ed elektrick\u00fdch z\u00e1vad dodr\u017eujte p\u0159ed otev\u0159en\u00edm jak\u00e9hokoli panelu tento postup:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1532\" height=\"904\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/06\/Quick-Diagnostic-Flow-for-Overhead-Crane-Electrical-Problems.png\" alt=\"\" class=\"wp-image-11558\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"replace-vs-repair-guide-for-crane-electrical-components\">Pr\u016fvodce v\u00fdm\u011bnou vs. opravou elektrick\u00fdch komponent je\u0159\u00e1bu<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Komponent<\/th><th>Nahradit<\/th><th>Oprava mo\u017en\u00e1<\/th><\/tr><\/thead><tbody><tr><td>Motor se sp\u00e1len\u00fdm vinut\u00edm<\/td><td>\u2713<\/td><td>\u2014<\/td><\/tr><tr><td>Motor pouze s opot\u0159ebovan\u00fdmi lo\u017eisky<\/td><td>\u2014<\/td><td>\u2713 Vym\u011b\u0148te lo\u017eisko<\/td><\/tr><tr><td>Sp\u00e1len\u00e9\/sva\u0159en\u00e9 kontakty styka\u010de<\/td><td>\u2713 (pokud je z\u00e1va\u017en\u00fd)<\/td><td>\u2713 Zapilov\u00e1n\u00ed a \u010di\u0161t\u011bn\u00ed (drobn\u00e9)<\/td><\/tr><tr><td>Op\u00e1len\u00fd sb\u011brac\u00ed krou\u017eek<\/td><td>\u2014<\/td><td>\u2713 Strojn\u00ed le\u0161t\u011bn\u00ed<\/td><\/tr><tr><td>Po\u0161kozen\u00e1 usm\u011br\u0148ovac\u00ed jednotka<\/td><td>\u2713<\/td><td>\u2014<\/td><\/tr><tr><td>Sp\u00e1len\u00e1 pojistka<\/td><td>\u2713<\/td><td>\u2014 (nejprve diagnostikujte p\u0159\u00ed\u010dinu)<\/td><\/tr><tr><td>Zaseknut\u00fd\/zaseknut\u00fd elektromagnet<\/td><td>\u2014<\/td><td>\u2713 \u010ci\u0161t\u011bn\u00ed a maz\u00e1n\u00ed<\/td><\/tr><tr><td>Net\u011bsn\u00edc\u00ed v\u00e1lec hydraulick\u00e9ho pohonu<\/td><td>\u2713<\/td><td>\u2014<\/td><\/tr><tr><td>\u0160patn\u011b zarovnan\u00fd koncov\u00fd sp\u00edna\u010d<\/td><td>\u2014<\/td><td>\u2713 Upravte polohu<\/td><\/tr><tr><td>Sva\u0159en\u00e9 kontakty hlavn\u00edho styka\u010de<\/td><td>\u2713<\/td><td>\u2014<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"preventive-maintenance-for-overhead-crane-electrical-systems\">Preventivn\u00ed \u00fadr\u017eba elektrick\u00fdch syst\u00e9m\u016f mostov\u00fdch je\u0159\u00e1b\u016f<\/h2>\n\n\n\n<p>Prevence poruch elektrick\u00e9ho syst\u00e9mu mostov\u00e9ho je\u0159\u00e1bu je v\u00fdrazn\u011b n\u00e1kladov\u011b efektivn\u011bj\u0161\u00ed ne\u017e nouzov\u00e9 prostoje nebo v\u00fdm\u011bna sou\u010d\u00e1st\u00ed. Strukturovan\u00fd program \u00fadr\u017eby elektrick\u00fdch syst\u00e9m\u016f m\u016f\u017ee sn\u00ed\u017eit neo\u010dek\u00e1van\u00e9 odst\u00e1vky, zlep\u0161it bezpe\u010dnost je\u0159\u00e1bu a prodlou\u017eit \u017eivotnost za\u0159\u00edzen\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"inspect-electrical-connections-regularly\">Pravideln\u011b kontrolujte elektrick\u00e9 p\u0159ipojen\u00ed<\/h3>\n\n\n\n<p>Uvoln\u011bn\u00e9 svorky, po\u0161kozen\u00e9 vodi\u010de a \u0161patn\u00e9 uzemn\u011bn\u00ed pat\u0159\u00ed mezi nej\u010dast\u011bj\u0161\u00ed p\u0159\u00ed\u010diny elektrick\u00fdch poruch mostov\u00fdch je\u0159\u00e1b\u016f. Elektrick\u00e9 rozvad\u011b\u010de, vodi\u010dov\u00e9 syst\u00e9my a svorkovnice by m\u011bly b\u00fdt pravideln\u011b kontrolov\u00e1ny.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"monitor-motor-temperature\">Sledov\u00e1n\u00ed teploty motoru<\/h3>\n\n\n\n<p>P\u0159eh\u0159\u00e1t\u00ed motoru je hlavn\u00ed p\u0159\u00ed\u010dinou selh\u00e1n\u00ed motoru je\u0159\u00e1bu. Obsluha by m\u011bla sledovat n\u00e1r\u016fst teploty, neobvykl\u00e9 pachy, vibrace a odb\u011br proudu, aby v\u010das identifikovala abnorm\u00e1ln\u00ed provozn\u00ed podm\u00ednky.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"check-contactors-and-relays\">Zkontrolujte styka\u010de a rel\u00e9<\/h3>\n\n\n\n<p>\u010cast\u00e9 sp\u00ednac\u00ed cykly zp\u016fsobuj\u00ed opot\u0159eben\u00ed povrch\u016f styka\u010d\u016f. Sp\u00e1len\u00e9 nebo sva\u0159en\u00e9 kontakty mohou v\u00e9st k ob\u010dasn\u00fdm poruch\u00e1m nebo \u00fapln\u00e9mu elektrick\u00e9mu vypnut\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"test-limit-switches-and-safety-devices\">Testov\u00e1n\u00ed koncov\u00fdch sp\u00edna\u010d\u016f a bezpe\u010dnostn\u00edch za\u0159\u00edzen\u00ed<\/h3>\n\n\n\n<p>Vadn\u00e9 koncov\u00e9 sp\u00edna\u010de \u010dasto zp\u016fsobuj\u00ed neo\u010dek\u00e1van\u00e9 probl\u00e9my s zastaven\u00edm nebo zm\u011bnou sm\u011bru. Bezpe\u010dnostn\u00ed blokov\u00e1n\u00ed, syst\u00e9my nouzov\u00e9ho zastaven\u00ed a koncov\u00e9 sp\u00edna\u010de pojezdu by m\u011bly b\u00fdt pravideln\u011b testov\u00e1ny.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"follow-scheduled-electrical-inspections\">Dodr\u017eujte pl\u00e1novan\u00e9 elektroinstalace<\/h3>\n\n\n\n<p>Pravideln\u00e1 elektrick\u00e1 \u00fadr\u017eba mostov\u00e9ho je\u0159\u00e1bu by m\u011bla zahrnovat testov\u00e1n\u00ed izola\u010dn\u00edho odporu, ov\u011b\u0159en\u00ed \u0159\u00eddic\u00edho obvodu, kontrolu troleje a kontrolu brzdov\u00e9ho syst\u00e9mu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"need-expert-support-for-overhead-crane-electrical-system-failures\">Pot\u0159ebujete odbornou pomoc p\u0159i poruch\u00e1ch elektrick\u00e9ho syst\u00e9mu mostov\u00e9ho je\u0159\u00e1bu?<\/h2>\n\n\n\n<p>Ve spole\u010dnosti KUANGSHAN CRANE poskytujeme kompletn\u00ed elektrick\u00e1 \u0159e\u0161en\u00ed pro mostov\u00e9 je\u0159\u00e1by, v\u010detn\u011b motor\u016f, syst\u00e9m\u016f VFD, ovl\u00e1dac\u00edch panel\u016f, nap\u00e1jec\u00edch ty\u010d\u00ed, koncov\u00fdch sp\u00edna\u010d\u016f a kompletn\u00edch bal\u00ed\u010dk\u016f pro elektrifikaci je\u0159\u00e1b\u016f.<\/p>\n\n\n\n<p>Pokud se pot\u00fdk\u00e1te s opakuj\u00edc\u00edmi se poruchami elektrick\u00e9ho syst\u00e9mu mostov\u00e9ho je\u0159\u00e1bu, n\u00e1\u0161 technick\u00fd t\u00fdm v\u00e1m m\u016f\u017ee pomoci s diagnostikou z\u00e1vad, doporu\u010den\u00edm n\u00e1hradn\u00edch komponent\u016f a podporou modernizace elektrick\u00e9ho syst\u00e9mu pro zv\u00fd\u0161en\u00ed spolehlivosti a v\u00fdkonu.<\/p>","protected":false},"excerpt":{"rendered":"Overhead crane electrical system failures are one of the leading causes of crane downtime in manufacturing plants, warehouses, steel mills, and heavy industrial facilities. Compared with mechanical faults, electrical failures are often more difficult to diagnose because the symptoms can be misleading. For example, a motor that fails to start may be caused by a [&hellip;]","protected":false},"featured_media":11539,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[189],"posts_tag":[768],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts\/11538"}],"collection":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":4,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts\/11538\/revisions"}],"predecessor-version":[{"id":11559,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/xmxposts\/11538\/revisions\/11559"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/media\/11539"}],"wp:attachment":[{"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/media?parent=11538"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/posts_category?post=11538"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/cs\/wp-json\/wp\/v2\/posts_tag?post=11538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}