{"id":279,"date":"2018-08-23T12:41:56","date_gmt":"2018-08-23T09:41:56","guid":{"rendered":"http:\/\/dimathanasopoulos.com\/?p=279"},"modified":"2018-09-10T23:57:07","modified_gmt":"2018-09-10T20:57:07","slug":"what-is-a-inverter-vfd-driver-variable-frequency-driver-troubleshooting","status":"publish","type":"post","link":"https:\/\/dimathanasopoulos.com\/index.php\/2018\/08\/23\/what-is-a-inverter-vfd-driver-variable-frequency-driver-troubleshooting\/","title":{"rendered":"\u03a4\u03b9 \u03b5\u03af\u03bd\u03b1\u03b9 \u03ad\u03bd\u03b1 Inverter VFD driver (Variable Frequency Driver), \u03a4\u03bc\u03ae\u03bc\u03b1\u03c4\u03b1, \u0392\u03bb\u03b1\u03b2\u03bf\u03bb\u03b7\u03c8\u03af\u03b1."},"content":{"rendered":"<h1>VFD\u00a0 Variable Frequency Drives<\/h1>\n<p>&nbsp;<\/p>\n<p>\u0393\u03b9\u03b1 \u03bd\u03b1 \u03b5\u03be\u03b5\u03c4\u03ac\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c0\u03c9\u03c2 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bf \u03ad\u03bb\u03b5\u03b3\u03c7\u03bf\u03c2 \u03c3\u03c4\u03c1\u03bf\u03c6\u03ce\u03bd \u03b5\u03bd\u03cc\u03c2 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03bc\u03b5 VFD driver (Driver \u03bc\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03ae\u03c2 \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2) \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b8\u03c5\u03bc\u03b7\u03b8\u03bf\u03cd\u03bc\u03b5 \u03c0\u03c1\u03ce\u03c4\u03b1 \u03ba\u03ac\u03c0\u03bf\u03b9\u03bf\u03c5\u03c2 \u03b2\u03b1\u03c3\u03b9\u03ba\u03bf\u03cd\u03c2 \u03cc\u03c1\u03bf\u03c5\u03c2. \u038c\u03c0\u03c9\u03c2 \u03b3\u03bd\u03c9\u03c1\u03af\u03b6\u03bf\u03c5\u03bc\u03b5 \u03bf\u03b9 \u03bc\u03bf\u03bd\u03bf\u03c6\u03b1\u03c3\u03b9\u03ba\u03bf\u03af \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 \u03ba\u03b1\u03b9 \u03bf\u03b9 \u03c4\u03c1\u03b9\u03c6\u03b1\u03c3\u03b9\u03ba\u03bf\u03af \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03bf\u03cd\u03bd \u03c3\u03cd\u03bc\u03c6\u03c9\u03bd\u03b1 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b1\u03c1\u03c7\u03ae \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1\u03c2 \u03c4\u03b7\u03c2 \u03b5\u03c0\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2. \u0391\u03c0\u03bf\u03c4\u03b5\u03bb\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03ad\u03bd\u03b1\u03bd \u03c1\u03cc\u03c4\u03bf\u03c1\u03b1 \u03ba\u03b1\u03b9 \u03ad\u03bd\u03b1\u03bd \u03c3\u03c4\u03ac\u03c4\u03b7 \u03c7\u03c9\u03c1\u03af\u03c2 \u03c6\u03c5\u03c3\u03b9\u03ba\u03ae \u03b5\u03c0\u03b1\u03c6\u03ae \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5 \u03b4\u03c1\u03bf\u03bc\u03ad\u03b1 \u00a0\u03ba\u03b1\u03b9 \u03c4\u03bf\u03c5 \u03c3\u03c4\u03ac\u03c4\u03b7. \u03a3\u03cd\u03bc\u03c6\u03c9\u03bd\u03b1 \u03bc\u03b5 \u03b1\u03c5\u03c4\u03ae\u03bd \u03c4\u03b7\u03bd \u03b1\u03c1\u03c7\u03ae \u03cc\u03c0\u03c9\u03c2 \u03b2\u03bb\u03ad\u03c0\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c4\u03bf \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03c3\u03c7\u03ae\u03bc\u03b1 \u03cc\u03c4\u03b1\u03bd \u03ad\u03bd\u03b1 \u03c0\u03bb\u03b1\u03af\u03c3\u03b9\u03bf \u03b2\u03c1\u03b5\u03b8\u03b5\u03af \u03bc\u03ad\u03c3\u03b1 \u03c3\u03b5 \u03bc\u03b5\u03c4\u03b1\u03b2\u03b1\u03bb\u03bb\u03cc\u03bc\u03b5\u03bd\u03bf \u03bc\u03b1\u03b3\u03bd\u03b7\u03c4\u03b9\u03ba\u03cc \u03c0\u03b5\u03b4\u03af\u03bf \u03b8\u03b1 \u03b5\u03bc\u03c6\u03b1\u03bd\u03b9\u03c3\u03c4\u03b5\u03af \u03c4\u03ac\u03c3\u03b7 \u03b5\u03be\u2019\u03b5\u03c0\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2 \u03c3\u03c4\u03b1 \u03ac\u03ba\u03c1\u03b1.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-319\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_0-1.jpg\" alt=\"\" width=\"396\" height=\"271\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>\u03a3\u03c4\u03bf\u03c5\u03c2 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03cc \u03bc\u03ad\u03c1\u03bf\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bf \u03c3\u03c4\u03ac\u03c4\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03cc \u03bf \u03c1\u03cc\u03c4\u03bf\u03c1\u03b1\u03c2.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-316\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_01-300x173.jpg\" alt=\"\" width=\"433\" height=\"250\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_01-300x173.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_01.jpg 465w\" sizes=\"(max-width: 433px) 100vw, 433px\" \/><\/p>\n<p>\u039f\u03b9 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 \u03ad\u03c7\u03bf\u03c5\u03bd\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c0\u03bf\u03c5 \u03ba\u03b1\u03b8\u03bf\u03c1\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7 \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c4\u03b7\u03c2 \u03c4\u03c1\u03bf\u03c6\u03bf\u03b4\u03bf\u03c3\u03af\u03b1\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c1\u03bf\u03c0\u03ae\u03c2. \u039f \u03b4\u03c1\u03bf\u03bc\u03ad\u03b1\u03c2 \u03c4\u03bf\u03c5 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c4\u03c1\u03ad\u03c6\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 n \u03c0\u03bf\u03c5 \u03b5\u03be\u03b1\u03c1\u03c4\u03ac\u03c4\u03b1\u03b9 \u03bf\u03c5\u03c3\u03b9\u03b1\u03c3\u03c4\u03b9\u03ba\u03ac \u03b1\u03c0\u03cc \u03c4\u03bf \u03c6\u03bf\u03c1\u03c4\u03af\u03bf \u03c4\u03bf\u03c5 \u03ac\u03be\u03bf\u03bd\u03b1. \u039f \u03bb\u03cc\u03b3\u03bf\u03c2 \u03c4\u03b7\u03c2 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03ac\u03c2 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03b7\u03c2 \u03c3\u03cd\u03b3\u03c7\u03c1\u03bf\u03bd\u03b7\u03c2 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 ns \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 \u03c4\u03bf\u03c5 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 n, \u03c9\u03c2 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b7\u03bd \u03c3\u03cd\u03b3\u03c7\u03c1\u03bf\u03bd\u03b7 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1, \u03bf\u03bd\u03bf\u03bc\u03ac\u03b6\u03b5\u03c4\u03b1\u03b9 \u03bf\u03bb\u03af\u03c3\u03b8\u03b7\u03c3\u03b7 <strong>s<\/strong> \u03ba\u03b1\u03b9 \u03b4\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03bf\u03bd \u03c4\u03cd\u03c0\u03bf \u00a0\u00a0\u00a0 \u03ba\u03b1\u03b9 \u03b7 \u03bf\u03bb\u03af\u03c3\u03b8\u03b7\u03c3\u03b7 \u03b4\u03b5\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03b1\u03bb\u03bb\u03ac \u03bc\u03b5\u03c4\u03b1\u03b2\u03ac\u03bb\u03bb\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03c4\u03bf \u03c6\u03bf\u03c1\u03c4\u03af\u03bf \u03ba\u03b1\u03b9 \u03b1\u03c5\u03be\u03ac\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03b1\u03c5\u03c4\u03cc.<\/p>\n<p>n= Rotor speed , ns=Stator speed, s=slip.<\/p>\n<p>\u0397 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c4\u03bf\u03c5 Rotor \u03b4\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03bf\u03bd \u03c4\u03cd\u03c0\u03bf: Speed\u00a0\u03b5\u03c0\u03bf\u03bc\u03ad\u03bd\u03c9\u03c2 \u03b3\u03b9\u03b1 \u03b6\u03b5\u03c5\u03b3\u03ac\u03c1\u03b9\u03b1 \u03c0\u03cc\u03bb\u03c9\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03c5\u03c0\u03bf\u03c0\u03bf\u03b9\u03b7\u03bc\u03ad\u03bd\u03b7 \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03ba\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03b4\u03b9\u03ba\u03c4\u03cd\u03bf\u03c5 50 \u0397z \u03b4\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03bf\u03bd \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03c0\u03af\u03bd\u03b1\u03ba\u03b1:<\/p>\n<p>2\u00a0\u00a0\u00a0 3000<\/p>\n<p>4\u00a0\u00a0\u00a0 1500<\/p>\n<p>6\u00a0\u00a0\u00a0 1000<\/p>\n<p>8\u00a0\u00a0\u00a0\u00a0\u00a0 750<\/p>\n<p>10\u00a0\u00a0\u00a0 600<\/p>\n<p>\u03a0\u03c1\u03bf\u03c6\u03b1\u03bd\u03ce\u03c2, \u03ad\u03bd\u03b1\u03c2 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1\u03c2 \u03bc\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03b4\u03b5\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03ba\u03b1\u03c4\u03ac\u03bb\u03bb\u03b7\u03bb\u03bf\u03c2 \u03b3\u03b9\u03b1 \u03cc\u03bb\u03b5\u03c2 \u03c4\u03b9\u03c2 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ad\u03c2, \u03bc\u03b5 \u03b1\u03c0\u03bf\u03c4\u03ad\u03bb\u03b5\u03c3\u03bc\u03b1 \u03c4\u03b7\u03bd \u03b1\u03bd\u03ac\u03b3\u03ba\u03b7 \u03c0\u03c1\u03bf\u03c3\u03b1\u03c1\u03bc\u03bf\u03b3\u03ae\u03c2 \u03c4\u03b7\u03c2 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 \u03b1\u03bd\u03ac\u03bb\u03bf\u03b3\u03b1 \u03bc\u03b5 \u03c4\u03b9\u03c2 \u03b1\u03bd\u03ac\u03b3\u03ba\u03b5\u03c2. \u03a4\u03b1 \u03b2\u03b9\u03bf\u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ac \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae\u03bc\u03b1\u03c4\u03b1 \u03bf\u03b4\u03b7\u03b3\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c5\u03c7\u03bd\u03ac \u03b1\u03c0\u03cc \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 \u03bc\u03b5 \u03b4\u03b9\u03b1\u03c4\u03ac\u03be\u03b5\u03b9\u03c2 \u03c1\u03cd\u03b8\u03bc\u03b9\u03c3\u03b7\u03c2 \u03c4\u03b7\u03c2 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2. \u0391\u03c5\u03c4\u03bf\u03af \u03bf\u03b9 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c0\u03bb\u03ce\u03c2 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf\u03b9, \u03b9\u03c3\u03c7\u03c5\u03c1\u03cc\u03c4\u03b5\u03c1\u03bf\u03b9 \u03b1\u03c0\u03cc \u03b5\u03ba\u03b5\u03af\u03bd\u03bf\u03c5\u03c2 \u03c0\u03bf\u03c5 \u03bf\u03b4\u03b7\u03b3\u03bf\u03cd\u03bd \u03bf\u03b9\u03ba\u03b5\u03b9\u03b1\u03ba\u03ad\u03c2 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ad\u03c2, \u03cc\u03c0\u03c9\u03c2 \u03b1\u03bd\u03b1\u03bc\u03b9\u03ba\u03c4\u03ae\u03c1\u03b5\u03c2 \u03c4\u03c1\u03bf\u03c6\u03af\u03bc\u03c9\u03bd \u03ae \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03ba\u03ac \u03c4\u03c1\u03c5\u03c0\u03ac\u03bd\u03b9\u03b1 \u03c4\u03b1 \u03bf\u03c0\u03bf\u03af\u03b1 \u03ba\u03b1\u03bd\u03bf\u03bd\u03b9\u03ba\u03ac \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03bf\u03cd\u03bd \u03bc\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1.<\/p>\n<p>\u0391\u03bd \u03ba\u03b1\u03b9 \u03b1\u03bd\u03b1\u03c0\u03c4\u03cd\u03c7\u03b8\u03b7\u03ba\u03b1\u03bd \u03c0\u03bf\u03bb\u03bb\u03ad\u03c2 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03b5\u03c4\u03b9\u03ba\u03ad\u03c2 \u03c4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ad\u03c2 \u03b5\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5 \u03c3\u03c4\u03c1\u03bf\u03c6\u03ce\u03bd \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03b5\u03c0\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2, \u03b7 \u03c0\u03b9\u03bf \u03b4\u03b7\u03bc\u03bf\u03c6\u03b9\u03bb\u03ae\u03c2 \u03c4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ae \u03b5\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03c0\u03b1\u03c1\u03b1\u03b3\u03c9\u03b3\u03ae \u03bc\u03b9\u03b1\u03c2 \u03bc\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03ae\u03c2 \u03c4\u03ac\u03c3\u03b7\u03c2 \u03c4\u03c1\u03bf\u03c6\u03bf\u03b4\u03bf\u03c3\u03af\u03b1\u03c2, \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03ad\u03c7\u03b5\u03b9 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03cc \u03bb\u03cc\u03b3\u03bf \u03c4\u03ac\u03c3\u03b7\u03c2 \u03c0\u03c1\u03bf\u03c2 \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1. \u0391\u03c5\u03c4\u03ae \u03b7 \u03c4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ae \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03c5\u03c1\u03ad\u03c9\u03c2 \u03b3\u03bd\u03c9\u03c3\u03c4\u03ae \u03c9\u03c2 \u03ad\u03bb\u03b5\u03b3\u03c7\u03bf\u03c2 V \/ F.<\/p>\n<p><strong>\u039c\u03b9\u03b1 \u03c0\u03bf\u03bb\u03cd \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03ae \u03c0\u03b1\u03c1\u03b1\u03c4\u03ae\u03c1\u03b7\u03c3\u03b7 \u03b5\u03b4\u03ce \u03b5\u03af\u03bd\u03b1\u03b9 \u03b3\u03b9\u03b1\u03c4\u03af \u03bc\u03b5\u03c4\u03b1\u03b2\u03ac\u03bb\u03bb\u03c9 \u03c4\u03b7\u03bd \u03c4\u03ac\u03c3\u03b7 \u03c4\u03b1\u03c5\u03c4\u03cc\u03c7\u03c1\u03bf\u03bd\u03b1 \u03bc\u03b5\u03c4\u03b1\u03b2\u03ac\u03bb\u03bb\u03c9 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03ba\u03c1\u03b1\u03c4\u03ac\u03c9 \u03b1\u03c5\u03c4\u03cc\u03bd \u03c4\u03bf\u03bd \u03bb\u03cc\u03b3\u03bf \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03cc \u03c4\u03b9 \u03b8\u03ad\u03bb\u03c9 \u03bd\u03b1 \u03b1\u03c0\u03bf\u03c6\u03cd\u03b3\u03c9 \u03ba\u03ac\u03c4\u03b9 \u03c0\u03bf\u03bb\u03cd \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03cc; \u0394\u03b5\u03bd \u03b8\u03b1 \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03c3\u03b1 \u03bd\u03b1 \u03bc\u03b5\u03c4\u03b1\u03b2\u03ac\u03bb\u03bb\u03c9 \u03bc\u03cc\u03bd\u03bf \u03c4\u03b7\u03bd \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03bd\u03b1 \u03c0\u03b5\u03c4\u03cd\u03c7\u03c9 \u03c1\u03cd\u03b8\u03bc\u03b9\u03c3\u03b7 \u03c3\u03c4\u03c1\u03bf\u03c6\u03ce\u03bd;<\/strong><\/p>\n<p><strong>\u00a0<\/strong><\/p>\n<p><strong>\u0391\u03c0\u03ac\u03bd\u03c4\u03b7\u03c3\u03b7:<\/strong><\/p>\n<p>\u038c\u03c0\u03c9\u03c2 \u03b3\u03bd\u03c9\u03c1\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 \u03b7 \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03b5\u03c0\u03b9\u03c1\u03b5\u03ac\u03b6\u03b5\u03b9 \u03c4\u03b7\u03bd \u03c3\u03cd\u03bd\u03b8\u03b5\u03c4\u03b7 \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 \u03b5\u03bd\u03cc\u03c2 \u03ba\u03c5\u03ba\u03bb\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2 \u03b1\u03c6\u03bf\u03cd \u03bc\u03c0\u03b1\u03af\u03bd\u03b5\u03b9 \u03c3\u03c4\u03bf\u03bd \u03c4\u03cd\u03c0\u03bf \u03c4\u03b7\u03c2 \u03b5\u03c0\u03b1\u03b3\u03c9\u03b3\u03b9\u03ba\u03ae\u03c2 \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 XL=\u03c9L= 2\u03c0fL \u03b5\u03c0\u03bf\u03bc\u03ad\u03bd\u03c9\u03c2 \u03b1\u03bd \u03bc\u03b9\u03ba\u03c1\u03cd\u03bd\u03c9 \u03c0\u03bf\u03bb\u03cd \u03c4\u03b7\u03bd \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c3\u03b5 \u03c4\u03b9\u03bc\u03ad\u03c2 \u03ba\u03bf\u03bd\u03c4\u03ac \u03c3\u03c4\u03bf \u03bc\u03b7\u03b4\u03ad\u03bd \u03c4\u03b1 \u03ac\u03b5\u03c1\u03b3\u03b1 \u03c1\u03b5\u03cd\u03bc\u03b1\u03c4\u03b1 \u03c3\u03cd\u03bc\u03c6\u03c9\u03bd\u03b1 \u03bc\u03b5 \u03c4\u03bf\u03bd \u03bd\u03cc\u03bc\u03bf \u03c4\u03bf\u03c5 \u03a9hm\u00a0\u00a0 I=V\/XL \u03b8\u03b1 \u03c0\u03ac\u03c1\u03bf\u03c5\u03bd\u03b5 \u03c0\u03ac\u03c1\u03b1 \u03c0\u03bf\u03bb\u03cd \u03bc\u03b5\u03b3\u03ac\u03bb\u03b7 \u03c4\u03b9\u03bc\u03ae \u03bc\u03b5 \u03b1\u03c0\u03bf\u03c4\u03ad\u03bb\u03b5\u03c3\u03bc\u03b1 \u03bd\u03b1 \u03ba\u03b1\u03c4\u03b1\u03c3\u03c4\u03c1\u03ad\u03c8\u03c9 \u03c4\u03b1 \u03c4\u03c5\u03bb\u03af\u03b3\u03bc\u03b1\u03c4\u03b1 , \u03c4\u03bf\u03bd \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03bf \u03ba\u03cd\u03ba\u03bb\u03c9\u03bc\u03b1 \u03bf\u03b4\u03ae\u03b3\u03b7\u03c3\u03b5\u03b9\u03c2 , \u03b1\u03bd \u03cc\u03bc\u03c9\u03c2 \u03c4\u03b1\u03c5\u03c4\u03cc\u03c7\u03c1\u03bf\u03bd\u03b1 \u03bc\u03b5\u03b9\u03ce\u03bd\u03c9 \u03c4\u03b7\u03bd \u03c4\u03ac\u03c3\u03b7 \u03c4\u03cc\u03c4\u03b5 \u03ba\u03b1\u03b9 \u03c4\u03b1 \u03ac\u03b5\u03c1\u03b3\u03b1 \u03c1\u03b5\u03cd\u03bc\u03b1\u03c4\u03b1 \u03c4\u03b1 \u03ba\u03c1\u03b1\u03c4\u03ac\u03c9 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ac \u03ba\u03b1\u03b9 \u03c3\u03b5 \u03c7\u03b1\u03bc\u03b7\u03bb\u03ad\u03c2 \u03c4\u03b9\u03bc\u03ad\u03c2.<\/p>\n<p>&nbsp;<\/p>\n<p>\u0395\u03c0\u03bf\u03bc\u03ad\u03bd\u03c9\u03c2\u00a0 V\/F = \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03cc.<\/p>\n<p>&nbsp;<\/p>\n<h3>\u03a3\u03c5\u03c3\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03bf\u03b4\u03ae\u03b3\u03b7\u03c3\u03b7\u03c2 \u03bc\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03ae\u03c2 \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2.<\/h3>\n<p>\u03a4\u03b1 \u03c3\u03c5\u03c3\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03bf\u03b4\u03ae\u03b3\u03b7\u03c3\u03b7\u03c2 \u03bc\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03ae\u03c2 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 (Variable Speed Drives \u2013VSD \u03ae Variable Frequency Drives \u2013VFD) \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03b5\u03bb\u03b5\u03b3\u03c7\u03b8\u03b5\u03af \u03ba\u03b1\u03b9 \u03bd\u03b1 \u03c0\u03c1\u03bf\u03c3\u03b1\u03c1\u03bc\u03bf\u03c3\u03c4\u03b5\u03af \u03b7 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c4\u03c1\u03bf\u03c6\u03ae\u03c2 \u03bc\u03b9\u03b1\u03c2 \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae\u03c2 \u03ba\u03b1\u03c4\u03ac \u03b2\u03bf\u03cd\u03bb\u03b7\u03c3\u03b7.<\/p>\n<p>\u25aa \u00a0\u0388\u03bd\u03b1 \u03c3\u03cd\u03bd\u03b7\u03b8\u03b5\u03c2 \u03c3\u03cd\u03c3\u03c4\u03b7\u03bc\u03b1 VFD \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03b5\u03af\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03c1\u03af\u03b1 \u03bc\u03ad\u03c1\u03b7: \u03c4\u03b7\u03bd \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03ba\u03ae \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae (\u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1\u03c2)<\/p>\n<p>\u03c4\u03bf \u03bc\u03b5\u03c4\u03b1\u03c4\u03c1\u03bf\u03c0\u03ad\u03b1 \u03b9\u03c3\u03c7\u03cd\u03bf\u03c2 (inverter), \u03c4\u03bf \u03c3\u03cd\u03c3\u03c4\u03b7\u03bc\u03b1 \u03b5\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-282\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_3-300x130.jpg\" alt=\"\" width=\"402\" height=\"174\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_3-300x130.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_3-600x259.jpg 600w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_3.jpg 676w\" sizes=\"(max-width: 402px) 100vw, 402px\" \/><\/p>\n<p><strong> \u03a4\u039f VFD \u0395\u03a3\u03a9\u03a4\u0395\u03a1\u0399\u039a\u0391<\/strong><\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-286\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_4_1-300x271.jpg\" alt=\"\" width=\"629\" height=\"569\" \/><\/p>\n<p>VFD ME \u03a6\u0399\u039b\u03a4\u03a1\u0391 \u0391\u03a1\u039c\u039f\u039d\u0399\u039a\u03a9\u039d &amp; Dc-link reactor<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-283\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_4-300x180.jpg\" alt=\"\" width=\"687\" height=\"412\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_4-300x180.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_4-600x360.jpg 600w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_4.jpg 754w\" sizes=\"(max-width: 687px) 100vw, 687px\" \/><\/p>\n<h3><\/h3>\n<h3>\u0391\u03c2 \u03b4\u03bf\u03cd\u03bc\u03b5 \u03ad\u03bd\u03b1 \u03ad\u03bd\u03b1 \u03c4\u03b1 \u03c4\u03bc\u03ae\u03bc\u03b1\u03c4\u03b1 \u03b5\u03bd\u03cc\u03c2 VFD Inverter.<\/h3>\n<ol>\n<li>VFD Parts<\/li>\n<\/ol>\n<p>\u0398\u03b1 \u03ba\u03b1\u03bb\u03cd\u03c8\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b1 \u03bc\u03ad\u03c1\u03b7 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1 \u03c4\u03c9\u03bd (VFD) \u039c\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03ae\u03c2 \u03a3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2<\/p>\n<p>Drive. \u0395\u03af\u03bd\u03b1\u03b9 \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03cc \u03bd\u03b1 \u03ad\u03c7\u03b5\u03c4\u03b5 \u03ba\u03b1\u03c4\u03ac \u03bd\u03bf\u03c5 \u03cc\u03c4\u03b9 \u03c4\u03bf Drive \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03cc\u03bd\u03bf \u03ad\u03bd\u03b1 \u03bc\u03ad\u03c1\u03bf\u03c2 \u03c4\u03bf\u03c5<\/p>\n<p>\u03c3\u03c5\u03c3\u03c4\u03ae\u03bc\u03b1\u03c4\u03bf\u03c2. \u038c\u03c0\u03c9\u03c2 \u03b8\u03b1 \u03b4\u03b5\u03af\u03c4\u03b5 \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b9\u03c2 \u03c6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b5\u03c2 \u03c0\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c3\u03c5\u03bd\u03ac\u03c0\u03c4\u03bf\u03bd\u03c4\u03b1\u03b9,\u03ad\u03c7\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf\u03bd \u03b4\u03b9\u03b1\u03ba\u03cc\u03c0\u03c4\u03b7 \u03b1\u03c0\u03bf\u03c3\u03cd\u03bd\u03b4\u03b5\u03c3\u03b7\u03c2, \u03c4\u03b9\u03c2 \u03b1\u03c3\u03c6\u03ac\u03bb\u03b5\u03b9\u03b5\u03c2, \u03c4\u03bf\u03bd \u03b4\u03b9\u03b1\u03ba\u03cc\u03c0\u03c4\u03b7 \u03c0\u03b1\u03c1\u03ac\u03ba\u03b1\u03bc\u03c8\u03b7\u03c2, \u03c4\u03b7\u03bd \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1 \u03b3\u03b9\u03b1 \u03b8\u03b5\u03c1\u03bc\u03b9\u03ba\u03ae \u03c5\u03c0\u03b5\u03c1\u03c6\u03cc\u03c1\u03c4\u03b9\u03c3\u03b7, \u03c4\u03bf BAS, \u03ba.\u03bb\u03c0., \u00a0\u03c0\u03bf\u03c5 \u03c0\u03b1\u03af\u03b6\u03bf\u03c5\u03bd \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03cc \u03c1\u03cc\u03bb\u03bf \u03c3\u03c4\u03b7\u03bd \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03ae \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03c3\u03c9\u03c3\u03c4\u03ae \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1 \u03b5\u03bd\u03cc\u03c2 VFD.<\/p>\n<p>&nbsp;<\/p>\n<p>\u03a3\u03c4\u03bf \u03b5\u03c3\u03c9\u03c4\u03b5\u03c1\u03b9\u03ba\u03cc \u03c4\u03bf\u03c5 VFD \u03c5\u03c0\u03ac\u03c1\u03c7\u03bf\u03c5\u03bd 4 \u03bc\u03b5\u03b3\u03ac\u03bb\u03b1 \u03c4\u03bc\u03ae\u03bc\u03b1\u03c4\u03b1: \u03b1\u03bd\u03bf\u03c1\u03b8\u03c9\u03c4\u03ae\u03c2, \u03c3\u03c4\u03b7\u03bd \u03bc\u03ad\u03c3\u03b7 \u03c4\u03bf (DC Link), \u03c4\u03bf\u03bd \u03b1\u03bd\u03c4\u03b9\u03c3\u03c4\u03c1\u03bf\u03c6\u03ad\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03bf\u03bd \u03ad\u03bb\u03b5\u03b3\u03c7\u03bf \/ \u03c1\u03cd\u03b8\u03bc\u03b9\u03c3\u03b7. \u0391\u03c5\u03c4\u03cc \u03c4\u03bf \u03c4\u03ad\u03c4\u03b1\u03c1\u03c4\u03bf \u03c4\u03bc\u03ae\u03bc\u03b1 \u03bf \u03ad\u03bb\u03b5\u03b3\u03c7\u03bf\u03c2<\/p>\n<p>\u03ba\u03b1\u03b9 \u03c1\u03cd\u03b8\u03bc\u03b9\u03c3\u03b7, \u03b4\u03b9\u03b1\u03c3\u03c5\u03bd\u03b4\u03ad\u03b5\u03c4\u03b1\u03b9 \u00a0\u03bc\u03b5 \u03c4\u03b1 \u03ac\u03bb\u03bb\u03b1 3 \u03c4\u03bc\u03ae\u03bc\u03b1\u03c4\u03b1.<\/p>\n<p>&nbsp;<\/p>\n<p>\u0393\u03b5\u03bd\u03b9\u03ba\u03ac \u03b7 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1 \u03ad\u03c7\u03b5\u03b9 \u03c9\u03c2 \u03b5\u03be\u03ae\u03c2. \u0397 \u03c4\u03c1\u03b9\u03c6\u03b1\u03c3\u03b9\u03ba\u03ae \u03ae \u03bc\u03bf\u03bd\u03bf\u03c6\u03b1\u03c3\u03b9\u03ba\u03ae \u03c4\u03ac\u03c3\u03b7 \u03b4\u03b9\u03ba\u03c4\u03cd\u03bf\u03c5 \u03b1\u03c1\u03c7\u03af\u03b6\u03b5\u03b9 \u03bd\u03b1 \u03b5\u03b9\u03c3\u03ad\u03c1\u03c7\u03b5\u03c4\u03b1\u03b9 \u03c3\u03c4\u03bf\u03bd \u03b1\u03bd\u03bf\u03c1\u03b8\u03c9\u03c4\u03ae, \u03cc\u03c0\u03bf\u03c5 \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03bf\u03b9\u03c7\u03b1 \u03c4\u03b7\u03bd \u03b1\u03bd\u03bf\u03c1\u03b8\u03ce\u03bd\u03b5\u03b9 \u03c3\u03b5 DC \u03c4\u03ac\u03c3\u03b7 \u03bc\u03b5 \u03ba\u03ac\u03c0\u03bf\u03b9\u03bf \u03ba\u03c5\u03bc\u03b1\u03c4\u03b9\u03c3\u03bc\u03cc. \u03a4\u03b1 \u03b5\u03bd\u03b4\u03b9\u03ac\u03bc\u03b5\u03c3\u03b1 \u03ba\u03c5\u03ba\u03bb\u03ce\u03bc\u03b1\u03c4\u03b1 \u03b5\u03be\u03bf\u03bc\u03b1\u03bb\u03cd\u03bd\u03bf\u03c5\u03bd \u03ba\u03b1\u03b9 \u03c3\u03c5\u03b3\u03ba\u03c1\u03b1\u03c4\u03bf\u03cd\u03bd \u03c4\u03b7\u03bd DC \u03c4\u03ac\u03c3\u03b7 \u03c3\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ac \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf\u03ac \u03ba\u03b1\u03b9 \u03c3\u03c5\u03bd\u03b4\u03ad\u03bf\u03bd\u03b1\u03b9 \u03bc\u03b5 \u03c4\u03bf\u03bd \u03b1\u03bd\u03c4\u03b9\u03c3\u03c4\u03c1\u03bf\u03c6\u03ad\u03b1. \u03a4\u03bf \u03c4\u03b5\u03bb\u03b5\u03c5\u03c4\u03b1\u03af\u03bf, \u03bf \u03bc\u03b5\u03c4\u03b1\u03c4\u03c1\u03bf\u03c0\u03ad\u03b1\u03c2, \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b5\u03af \u03c4\u03b7\u03bd \u03c4\u03ac\u03c3\u03b7 \u03c3\u03c5\u03bd\u03b5\u03c7\u03bf\u03cd\u03c2 \u03c1\u03b5\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03c0\u03b1\u03bb\u03bc\u03b9\u03ba\u03ae \u03ba\u03af\u03bd\u03b7\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03c3\u03b5 \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03b1 \u03c4\u03ac\u03c3\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03c1\u03b5\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2 \u03b1\u03bd\u03ac\u03bb\u03bf\u03b3\u03b1 \u03bc\u03b5 \u03c4\u03bf \u03ba\u03cd\u03ba\u03bb\u03c9\u03bc\u03b1 \u03b5\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5. \u0397 \u03b4\u03b9\u03b1\u03bc\u03cc\u03c1\u03c6\u03c9\u03c3\u03b7 \u03c4\u03c9\u03bd \u03c0\u03b1\u03bb\u03bc\u03ce\u03bd \u03c0\u03bf\u03c5 \u03c0\u03b7\u03b3\u03b1\u03af\u03bd\u03bf\u03c5\u03bd \u03c3\u03c4\u03bf \u03bc\u03bf\u03c4\u03ad\u03c1 \u03c4\u03bf \u03ba\u03ac\u03bd\u03b5\u03b9 \u03bd\u03b1 \u03bc\u03bf\u03b9\u03ac\u03b6\u03b5\u03b9 \u03bc\u03b5 \u03bc\u03af\u03b1 \u03b7\u03bc\u03b9\u03c4\u03bf\u03bd\u03bf\u03b5\u03b9\u03b4\u03ad\u03c2 \u03ba\u03c5\u03bc\u03b1\u03c4\u03bf\u03bc\u03bf\u03c1\u03c6\u03ae.<\/p>\n<p>\u039a\u03ac\u03b8\u03b5 \u03bc\u03af\u03b1 \u03b1\u03c0\u03cc \u03b1\u03c5\u03c4\u03ad\u03c2 \u03c4\u03b9\u03c2 \u03b5\u03bd\u03cc\u03c4\u03b7\u03c4\u03b5\u03c2 \u03b5\u03be\u03b5\u03c4\u03ac\u03b6\u03b5\u03c4\u03b1\u03b9 \u03bb\u03b5\u03c0\u03c4\u03bf\u03bc\u03b5\u03c1\u03ce\u03c2 \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9:<\/p>\n<p>\u0394\u03b9\u03b1\u03ba\u03cc\u03c0\u03c4\u03b7\u03c2 \u03c0\u03b1\u03c1\u03ac\u03ba\u03b1\u03bc\u03c8\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03b1\u03c3\u03c6\u03ac\u03bb\u03b5\u03b9\u03b5\u03c2 \u03b3\u03b9\u03b1 \u03ad\u03bd\u03b1 Inverter 600Hp (450KW), \u03c3\u03b5 \u03bc\u03b9\u03ba\u03c1\u03cc\u03c4\u03b5\u03c1\u03bf\u03c5\u03c2 \u0399nverter \u03b1\u03c5\u03c4\u03ac \u03c4\u03b1 \u03b4\u03cd\u03bf \u03bc\u03ad\u03c1\u03b7 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03bd\u03c3\u03c9\u03bc\u03b1\u03c4\u03c9\u03bc\u03ad\u03bd\u03b1 \u03bc\u03ad\u03c3\u03b1 \u03c3\u03c4\u03bf drive.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-284\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_5-300x180.jpg\" alt=\"\" width=\"449\" height=\"269\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_5-300x180.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_5.jpg 569w\" sizes=\"(max-width: 449px) 100vw, 449px\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-285\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_6-300x206.jpg\" alt=\"\" width=\"411\" height=\"282\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_6-300x206.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_6.jpg 566w\" sizes=\"(max-width: 411px) 100vw, 411px\" \/><\/p>\n<p>\u039c\u03b5\u03c4\u03b1\u03c4\u03c1\u03ad\u03c0\u03b5\u03b9 \u03c4\u03bf \u03b5\u03bd\u03b1\u03bb\u03bb\u03b1\u03c3\u03c3\u03cc\u03bc\u03b5\u03bd\u03bf \u03c3\u03b5 \u03c3\u03c5\u03bd\u03b5\u03c7\u03ad\u03c2.<\/p>\n<p>\u03a4\u03b1 \u03b8\u03c5\u03c1\u03af\u03c3\u03c4\u03bf\u03c1 (D1 \u03ad\u03c9\u03c2 D6) \u03b5\u03c0\u03b9\u03c4\u03c1\u03ad\u03c0\u03bf\u03c5\u03bd \u03c4\u03b7 \u03c1\u03bf\u03ae \u03c1\u03b5\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2 \u03bc\u03cc\u03bd\u03bf \u03c3\u03b5 \u03bc\u03af\u03b1 \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03cc\u03c4\u03b1\u03bd \u03b5\u03bd\u03b5\u03c1\u03b3\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 \u03c4\u03bf \u03c3\u03ae\u03bc\u03b1 \u03c4\u03b7\u03c2 \u03c0\u03cd\u03bb\u03b7\u03c2 \u03c4\u03bf\u03c5\u03c2. \u03a3\u03b5 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03b4\u03b9\u03ac\u03b3\u03c1\u03b1\u03bc\u03bc\u03b1, \u03b7 \u03b9\u03c3\u03c7\u03cd\u03c2 \u03b5\u03bd\u03b1\u03bb\u03bb\u03b1\u03c3\u03c3\u03cc\u03bc\u03b5\u03bd\u03bf\u03c5 \u03c1\u03b5\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2 \u03c3\u03c4\u03bf L1 \u03bc\u03b5\u03c4\u03b1\u03b2\u03b1\u03af\u03bd\u03b5\u03b9 \u03c3\u03c4\u03b1 \u03b8\u03c5\u03c1\u03af\u03c3\u03c4\u03bf\u03c1 D1 \u03ba\u03b1\u03b9 D2. \u039b\u03cc\u03b3\u03c9 \u03c4\u03b7\u03c2 \u03b8\u03ad\u03c3\u03b7\u03c2 \u03b1\u03c5\u03c4\u03ce\u03bd \u03c4\u03c9\u03bd \u03b8\u03c5\u03c1\u03af\u03c3\u03c4\u03bf\u03c1, \u03b7 \u03c1\u03bf\u03ae \u03c1\u03b5\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03b1\u03bd\u03b5\u03b2\u03b1\u03af\u03bd\u03b5\u03b9 \u03bc\u03cc\u03bd\u03bf. \u03a4\u03bf \u03b8\u03c5\u03c1\u03af\u03c3\u03c4\u03bf\u03c1 D1 \u03ac\u03b3\u03b5\u03b9 \u03cc\u03c4\u03b1\u03bd \u03c4\u03bf AC \u03b5\u03af\u03bd\u03b1\u03b9 \u03b8\u03b5\u03c4\u03b9\u03ba\u03cc \u03ba\u03b1\u03b9 \u03c4\u03bf D2 \u03ac\u03b3\u03b5\u03b9 \u00a0\u03cc\u03c4\u03b1\u03bd \u03c4\u03bf AC \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c1\u03bd\u03b7\u03c4\u03b9\u03ba\u03cc. \u0391\u03c5\u03c4\u03cc \u03bf\u03b4\u03b7\u03b3\u03b5\u03af \u03c4\u03b7\u03bd \u03c0\u03ac\u03bd\u03c9 \u03b3\u03c1\u03b1\u03bc\u03bc\u03ae (+) \u03c3\u03b5 \u03b8\u03b5\u03c4\u03b9\u03ba\u03cc \u03b4\u03c5\u03bd\u03b1\u03bc\u03b9\u03ba\u03cc \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03ba\u03ac\u03c4\u03c9 \u03b3\u03c1\u03b1\u03bc\u03bc\u03ae (-) \u03c3\u03b5 \u03b1\u03c1\u03bd\u03b7\u03c4\u03b9\u03ba\u03cc. \u03a4\u03b1 \u03b8\u03c5\u03c1\u03af\u03c3\u03c4\u03bf\u03c1 D3 \u03ba\u03b1\u03b9 D4 \u03bc\u03b5\u03c4\u03b1\u03c4\u03c1\u03ad\u03c0\u03bf\u03c5\u03bd \u03c4\u03b7\u03bd \u03b9\u03c3\u03c7\u03cd \u03c4\u03b7\u03c2 L2 \u03c3\u03b5 DC \u03ba\u03b1\u03b9 \u03c4\u03b1 \u03b8\u03c5\u03c1\u03af\u03c3\u03c4\u03bf\u03c1 D5 \u03ba\u03b1\u03b9 D6 \u03bc\u03b5\u03c4\u03b1\u03c4\u03c1\u03ad\u03c0\u03bf\u03c5\u03bd \u03c4\u03bf L3. \u039c\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b7\u03b8\u03b5\u03af \u03ad\u03bd\u03b1 \u03b2\u03bf\u03bb\u03c4\u03cc\u03bc\u03b5\u03c4\u03c1\u03bf \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03bc\u03b5\u03c4\u03c1\u03b7\u03b8\u03b5\u03af \u03b1\u03c5\u03c4\u03ae DC \u03c4\u03ac\u03c3\u03b7. \u03a3\u03b5 \u03b1\u03c5\u03c4\u03cc\u03bd \u03c4\u03bf\u03bd \u03c4\u03cd\u03c0\u03bf \u03ba\u03c5\u03ba\u03bb\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2, \u03b7 \u03c4\u03ac\u03c3\u03b7 \u03c3\u03c5\u03bd\u03b5\u03c7\u03bf\u03cd\u03c2 \u03c1\u03b5\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 1,35 \u03c6\u03bf\u03c1\u03ad\u03c2 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b7 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03c4\u03ac\u03c3\u03b7 \u03b3\u03c1\u03b1\u03bc\u03bc\u03ae\u03c2 \u03b5\u03bd\u03b1\u03bb\u03bb\u03b1\u03c3\u03c3\u03cc\u03bc\u03b5\u03bd\u03bf\u03c5 \u03c1\u03b5\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2. \u0395\u03c0\u03bf\u03bc\u03ad\u03bd\u03c9\u03c2 \u03b1\u03bd :<\/p>\n<p>Vac= 240 V,\u00a0\u00a0 \u03c4\u03cc\u03c4\u03b5 \u03c0\u03b1\u03c1\u03ac\u03b3\u03b5\u03c4\u03b1\u03b9 \u03c4\u03ac\u03c3\u03b7 324 Vdc.<\/p>\n<p>Vac= 380 V,\u00a0\u00a0 \u03c4\u03cc\u03c4\u03b5 \u03c0\u03b1\u03c1\u03ac\u03b3\u03b5\u03c4\u03b1\u03b9 \u03c4\u03ac\u03c3\u03b7 513 Vdc.<\/p>\n<p>Vac= 400 V,\u00a0\u00a0 \u03c4\u03cc\u03c4\u03b5 \u03c0\u03b1\u03c1\u03ac\u03b3\u03b5\u03c4\u03b1\u03b9 \u03c4\u03ac\u03c3\u03b7 540 Vdc.<\/p>\n<p>Vac= 575 V,\u00a0\u00a0 \u03c4\u03cc\u03c4\u03b5 \u03c0\u03b1\u03c1\u03ac\u03b3\u03b5\u03c4\u03b1\u03b9 \u03c4\u03ac\u03c3\u03b7 776 Vdc.<\/p>\n<p>\u0395\u03c0\u03b5\u03b9\u03b4\u03ae \u03c3\u03b5 \u03bc\u03af\u03b1 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ae \u03b7 \u03b9\u03c3\u03c7\u03cd\u03c2 \u03c4\u03bf\u03c5 \u03c6\u03bf\u03c1\u03c4\u03af\u03bf\u03c5 \u03ba\u03b1\u03b9 \u03b7 \u03c4\u03ac\u03c3\u03b7 \u03b4\u03b9\u03ba\u03c4\u03cd\u03bf\u03c5 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03bc\u03b5\u03c4\u03b1\u03b2\u03ac\u03bb\u03bb\u03b5\u03c4\u03b1\u03b9 \u03c4\u03cc\u03c4\u03b5 \u03ba\u03b1\u03b9 \u03b7 dc \u03c4\u03ac\u03c3\u03b7 \u03b8\u03b1 \u03ba\u03b9\u03bd\u03b5\u03af\u03c4\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03c9\u03bd \u03c4\u03b9\u03bc\u03ce\u03bd.<\/p>\n<p>&nbsp;<\/p>\n<p>To \u03c4\u03bc\u03ae\u03bc\u03b1 \u03c4\u03bf\u03c5 \u03b1\u03bd\u03bf\u03c1\u03b8\u03c9\u03c4\u03ae \u03c0\u03b5\u03c1\u03b9\u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03b5\u03b9 \u03c4\u03b7\u03bd \u03b5\u03af\u03c3\u03bf\u03b4\u03bf \u03c4\u03b7\u03c2 \u03c4\u03c1\u03bf\u03c6\u03bf\u03b4\u03bf\u03c3\u03af\u03b1\u03c2 , \u03c4\u03b1 \u03b8\u03c5\u03c1\u03af\u03c3\u03c4\u03bf\u03c1 \u03ba\u03b1\u03b9 \u03c4\u03b9\u03c2 \u03c8\u03cd\u03ba\u03c4\u03c1\u03b5\u03c2.<\/p>\n<p>\u0394\u03b5\u03af\u03c4\u03b5 \u03c4\u03b7\u03bd \u03b5\u03b9\u03ba\u03cc\u03bd\u03b1 \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-288\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_7-300x223.jpg\" alt=\"\" width=\"409\" height=\"304\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_7-300x223.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_7.jpg 583w\" sizes=\"(max-width: 409px) 100vw, 409px\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-289\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_8-300x234.jpg\" alt=\"\" width=\"437\" height=\"341\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_8-300x234.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_8.jpg 481w\" sizes=\"(max-width: 437px) 100vw, 437px\" \/><\/p>\n<p>\u03a3\u03b5 \u03bc\u03b5\u03b3\u03ac\u03bb\u03bf\u03c5\u03c2 VDF drives &gt; 22kW = 30 Hp \u03ad\u03bd\u03b1 soft charge \u03ba\u03cd\u03ba\u03bb\u03c9\u03bc\u03b1 \u03c0\u03c1\u03bf\u03c3\u03c4\u03af\u03b8\u03b5\u03c4\u03b1\u03b9 \u03c0\u03bf\u03c5 \u03b2\u03bf\u03b7\u03b8\u03ac\u03b5\u03b9 \u03c3\u03c4\u03b7\u03bd \u03c6\u03cc\u03c1\u03c4\u03b9\u03c3\u03b7 \u03c4\u03c9\u03bd dc \u03a0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ce\u03bd \u03c0\u03c1\u03b9\u03bd \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03c3\u03c4\u03b5\u03af \u03b7 \u03c4\u03ac\u03c3\u03b7 \u03c4\u03c1\u03bf\u03c6\u03bf\u03b4\u03bf\u03c3\u03af\u03b1\u03c2 \u03c3\u03c4\u03bf\u03bd \u03b1\u03bd\u03bf\u03c1\u03b8\u03c9\u03c4\u03ae. \u038c\u03c0\u03c9\u03c2 \u03b8\u03b1 \u03b4\u03b5\u03af\u03c4\u03b5 \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03b5\u03b9\u03ba\u03cc\u03bd\u03b1 \u03b1\u03c5\u03c4\u03ae \u03b7 \u03ba\u03ac\u03c1\u03c4\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03c0\u03ac\u03bd\u03c9 \u03b1\u03c1\u03b9\u03c3\u03c4\u03b5\u03c1\u03ae \u03b3\u03c9\u03bd\u03af\u03b1 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ce\u03c2 \u03c0\u03ac\u03bd\u03c9 \u03b1\u03c0\u03cc \u03c4\u03bf\u03bd \u03b1\u03bd\u03bf\u03c1\u03b8\u03c9\u03c4\u03ae \u03ba\u03b1\u03b9 \u03bf\u03b9 \u03b1\u03c3\u03c6\u03ac\u03bb\u03b5\u03b9\u03b5\u03c2 \u03c4\u03b7\u03c2 \u03b2\u03c1\u03af\u03c3\u03ba\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b1 \u03b4\u03b5\u03be\u03b9\u03ac. \u03a3\u03b5 drivers \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b1 \u03b1\u03c0\u03cc 350 Hp, \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 IGBT \u03b1\u03bd\u03c4\u03af \u03b3\u03b9\u03b1 \u03b1\u03bd\u03c4\u03b9\u03c3\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c0\u03b5\u03c1\u03b9\u03bf\u03c1\u03af\u03c3\u03bf\u03c5\u03bd \u03c4\u03bf \u03c1\u03b5\u03cd\u03bc\u03b1 \u03c0\u03bf\u03c5 \u03c0\u03ac\u03b5\u03b9 \u03c3\u03c4\u03bf\u03c5\u03c2 \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ad\u03c2.<\/p>\n<p>\u0392\u03bb\u03ad\u03c0\u03bf\u03c5\u03bc\u03b5 \u03ad\u03bd\u03b1 Soft Charge \u03b3\u03b9\u03b1 \u03ad\u03bd\u03b1 drive 600Hp (450kW).<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-290\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_9-300x167.jpg\" alt=\"\" width=\"397\" height=\"221\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_9-300x167.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_9-600x334.jpg 600w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_9.jpg 665w\" sizes=\"(max-width: 397px) 100vw, 397px\" \/><\/p>\n<p>\u0392\u03bb\u03ad\u03c0\u03bf\u03c5\u03bc\u03b5 \u03b3\u03b9\u03b1 \u03ad\u03bd\u03b1 Drive 200 Hp \u03c4\u03b9\u03c2 2 \u03bc\u03b5\u03b3\u03ac\u03bb\u03b5\u03c2 \u03b1\u03c3\u03c6\u03ac\u03bb\u03b5\u03b9\u03b5\u03c2 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b1\u03c2 \u03c4\u03b7\u03c2 \u03b9\u03c3\u03c7\u03cd\u03bf\u03c2 \u03c0\u03bf\u03c5 \u03c0\u03ac\u03b5\u03b9 \u03c3\u03c4\u03bf\u03c5\u03c2 \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ad\u03c2 \u03c3\u03c4\u03bf \u03c4\u03bc\u03ae\u03bc\u03b1 DC Link.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-292\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_9_1-300x185.jpg\" alt=\"\" width=\"446\" height=\"275\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_9_1-300x185.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_9_1-600x370.jpg 600w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_9_1.jpg 652w\" sizes=\"(max-width: 446px) 100vw, 446px\" \/><\/p>\n<p>\u03a7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ce\u03bd\u03c4\u03b1\u03c2 \u03bc\u03b9\u03b1 \u03c3\u03b5\u03b9\u03c1\u03ac \u03b1\u03c0\u03cc \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ad\u03c2 \u03ba\u03b1\u03b9 DC reactors \u03b7 \u03c3\u03c5\u03bd\u03b5\u03c7\u03ae\u03c2 \u03c4\u03ac\u03c3\u03b7 DC \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c0\u03b9\u03bf \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae.<img loading=\"lazy\" class=\"alignnone size-medium wp-image-291\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_10-300x238.jpg\" alt=\"\" width=\"300\" height=\"238\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_10-300x238.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_10.jpg 493w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-293\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_11-300x177.jpg\" alt=\"\" width=\"441\" height=\"260\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_11-300x177.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_11-600x353.jpg 600w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_11.jpg 644w\" sizes=\"(max-width: 441px) 100vw, 441px\" \/><\/p>\n<p>\u039f\u03b9 \u03bc\u03c0\u03bb\u03ad \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ad\u03c2 \u03ae \u03bc\u03b1\u03cd\u03c1\u03bf\u03b9 \u03c0\u03bf\u03c5 \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bc\u03b5 \u03bd\u03b1 \u03c4\u03bf\u03c5\u03c2 \u03c3\u03c5\u03bd\u03b1\u03bd\u03c4\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03b1\u03c0\u03bf\u03b8\u03b7\u03ba\u03b5\u03cd\u03bf\u03c5\u03bd \u03bc\u03b5\u03b3\u03ac\u03bb\u03b7 \u03c0\u03bf\u03c3\u03cc\u03c4\u03b7\u03c4\u03b1 \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1\u03c2. \u03a3\u03c4\u03b7\u03bd \u03c6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 \u03b2\u03bb\u03ad\u03c0\u03bf\u03c5\u03bc\u03b5 \u03c4\u03c1\u03b5\u03af\u03c2 \u03c3\u03b5\u03b9\u03c1\u03ad\u03c2 \u03b1\u03c0\u03cc 12 \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ad\u03c2 \u03ac\u03c1\u03b1 \u03c3\u03c5\u03bd\u03bf\u03bb\u03b9\u03ac 36 \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ad\u03c2.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-294\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_12-300x197.jpg\" alt=\"\" width=\"416\" height=\"273\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_12-300x197.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_12-600x394.jpg 600w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_12.jpg 606w\" sizes=\"(max-width: 416px) 100vw, 416px\" \/><\/p>\n<p>\u03a5\u03c0\u03ac\u03c1\u03c7\u03bf\u03c5\u03bd 2 \u03c3\u03b5\u03b9\u03c1\u03ad\u03c2 \u03c0\u03b7\u03bd\u03af\u03c9\u03bd \u03cc\u03c0\u03c9\u03c2 \u03c6\u03b1\u03af\u03bd\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c0\u03b1\u03c1\u03b1\u03c0\u03ac\u03bd\u03c9.\u03a4\u03b1 \u03c0\u03b7\u03bd\u03af\u03b1 DC Link \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03ac\u03bd\u03c4\u03b1 \u03bc\u03b5 2 \u03c4\u03b5\u03c1\u03bc\u03b1\u03c4\u03b9\u03ba\u03ac, \u03c0\u03bf\u03c5 \u03b5\u03bc\u03c6\u03b1\u03bd\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b5\u03b4\u03ce \u03c3\u03c4\u03b1 \u03b1\u03c1\u03b9\u03c3\u03c4\u03b5\u03c1\u03ac.\u03a4\u03b1 \u03c0\u03b7\u03bd\u03af\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03c5\u03bd\u03b5\u03c7\u03bf\u03cd\u03c2 \u03c1\u03b5\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2, \u03b3\u03bd\u03c9\u03c3\u03c4\u03ad\u03c2 \u03b5\u03c0\u03af\u03c3\u03b7\u03c2 \u03c9\u03c2 \u00a0DC Chokes.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-295\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_12brake_circuit-300x203.jpg\" alt=\"\" width=\"517\" height=\"350\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_12brake_circuit-300x203.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_12brake_circuit.jpg 553w\" sizes=\"(max-width: 517px) 100vw, 517px\" \/><\/p>\n<p>\u038c\u03c4\u03b1\u03bd \u03bf\u03b9 drivers \u03b6\u03b7\u03c4\u03b9\u03ad\u03c4\u03b1\u03b9 \u03bd\u03b1 \u03ad\u03c7\u03bf\u03c5\u03bd\u03b5 \u03b4\u03c5\u03bd\u03b1\u03bc\u03b9\u03ba\u03cc \u03c6\u03c1\u03ad\u03bd\u03bf, \u03bf drive \u03ad\u03c1\u03c7\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03c6\u03c1\u03ad\u03bd\u03bf IGBTs. \u038c\u03c4\u03b1\u03bd \u03b7 \u03c4\u03ac\u03c3\u03b7 \u03c0\u03b1\u03af\u03c1\u03bd\u03b5\u03b9 \u03c0\u03bf\u03bb\u03cd \u03c5\u03c8\u03b7\u03bb\u03ae \u03c4\u03b9\u03bc\u03ae \u03c3\u03c4\u03bf DC Bus, \u03c4\u03bf \u03c6\u03c1\u03ad\u03bd\u03bf IGBT \u03b5\u03bd\u03b5\u03c1\u03b3\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 \u03ba\u03b1\u03b9 \u03c3\u03c4\u03ad\u03bb\u03bd\u03b5\u03b9\u00a0 \u03b9\u03c3\u03c7\u03cd \u03c3\u03c4\u03b7\u03bd<\/p>\n<p>\u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03c6\u03c1\u03ad\u03bd\u03bf\u03c5. \u0391\u03c5\u03c4\u03cc \u03b4\u03b5\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae \u03b3\u03b9\u03b1 \u03bc\u03bf\u03bd\u03ac\u03b4\u03b5\u03c2 HVAC.<\/p>\n<p>\u0391\u03c5\u03c4\u03ae \u03b7 \u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae \u03c6\u03c1\u03ad\u03bd\u03c9\u03bd, \u03b3\u03bd\u03c9\u03c3\u03c4\u03ae \u03ba\u03b1\u03b9 \u03c9\u03c2 \u03b4\u03c5\u03bd\u03b1\u03bc\u03b9\u03ba\u03ae \u03c0\u03ad\u03b4\u03b7\u03c3\u03b7, \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ad\u03c2 \u03c0\u03bf\u03c5 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03bf\u03cd\u03bd \u03ae \u03bd\u03b1 \u03b1\u03bb\u03bb\u03ac\u03b6\u03bf\u03c5\u03bd \u03b3\u03c1\u03ae\u03b3\u03bf\u03c1\u03b1 \u03c6\u03bf\u03c1\u03ac, \u03cc\u03c0\u03c9\u03c2 \u03c3\u03b5 \u03bc\u03b5\u03c4\u03b1\u03c6\u03bf\u03c1\u03b5\u03af\u03c2, \u03b1\u03bd\u03c5\u03c8\u03c9\u03c4\u03ae\u03c1\u03b5\u03c2 \u03ba\u03b1\u03b9 \u03c6\u03c5\u03b3\u03cc\u03ba\u03b5\u03bd\u03c4\u03c1\u03b5\u03c2. \u03a3\u03b5 \u03bc\u03bf\u03bd\u03ac\u03b4\u03b5\u03c2 \u03bc\u03b5 \u03c6\u03c1\u03ad\u03bd\u03bf, \u03c4\u03bf \u03c4\u03c1\u03b1\u03bd\u03b6\u03af\u03c3\u03c4\u03bf\u03c1 IGBT \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03b1\u03c6\u03b1\u03b9\u03c1\u03ad\u03c3\u03b5\u03b9 \u03c4\u03b7\u03bd \u03c0\u03c1\u03cc\u03c3\u03b8\u03b5\u03c4\u03b7 \u03b9\u03c3\u03c7\u03cd \u03c0\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c3\u03c4\u03c1\u03ad\u03c6\u03b5\u03b9 \u03c3\u03c4\u03b7 \u03bc\u03bf\u03bd\u03ac\u03b4\u03b1 \u03cc\u03c4\u03b1\u03bd \u03bf \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1\u03c2, \u03bf \u03bf\u03c0\u03bf\u03af\u03bf\u03c2 \u03ad\u03c7\u03b5\u03b9 \u03bc\u03b5\u03b3\u03ac\u03bb\u03b7 \u03b1\u03b4\u03c1\u03ac\u03bd\u03b5\u03b9\u03b1, \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03ac \u03ae \u03b1\u03bb\u03bb\u03ac\u03b6\u03b5\u03b9 \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7. \u0397 \u03bc\u03cc\u03bd\u03b7 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ae HVAC \u03c0\u03bf\u03c5 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ae\u03c3\u03b5\u03b9 \u03b4\u03c5\u03bd\u03b1\u03bc\u03b9\u03ba\u03ae \u03c0\u03ad\u03b4\u03b7\u03c3\u03b7 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03b1\u03bd\u03b5\u03bc\u03b9\u03c3\u03c4\u03ae\u03c1\u03b5\u03c2 \u03c3\u03b5 \u03ba\u03b1\u03cd\u03c3\u03b7 \u03bb\u03ad\u03b2\u03b7\u03c4\u03b1.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-296\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_13_inverter-300x210.jpg\" alt=\"\" width=\"479\" height=\"335\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_13_inverter-300x210.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_13_inverter.jpg 516w\" sizes=\"(max-width: 479px) 100vw, 479px\" \/><\/p>\n<p>\u039f\u03b9 \u03bc\u03b5\u03c4\u03b1\u03c4\u03c1\u03bf\u03c0\u03b5\u03af\u03c2 Inverters \u00a0\u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03bf\u03c5\u03bd \u03c4\u03b7\u03bd \u03c4\u03ac\u03c3\u03b7 \u03b1\u03c0\u03cc \u03c4\u03bf \u03b4\u03af\u03b1\u03c5\u03bb\u03bf DC \u03ba\u03b1\u03b9 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b7 \u03b4\u03b9\u03b1\u03bc\u03cc\u03c1\u03c6\u03c9\u03c3\u03b7 \u03b5\u03cd\u03c1\u03bf\u03c5\u03c2 \u03c0\u03b1\u03bb\u03bc\u03bf\u03cd (PWM) \u03c3\u03c4\u03ad\u03bb\u03bd\u03bf\u03c5\u03bd \u03c4\u03bf \u03c3\u03ae\u03bc\u03b1 \u03c0\u03bf\u03c5 \u03b5\u03bc\u03c6\u03b1\u03bd\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 \u03c3\u03c4\u03bf\u03bd \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03c9\u03c2 \u03c3\u03ae\u03bc\u03b1 AC.<\/p>\n<p>\u039f\u03b9 \u03b1\u03b9\u03c3\u03b8\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 Current \u03c0\u03b1\u03c1\u03b1\u03ba\u03bf\u03bb\u03bf\u03c5\u03b8\u03bf\u03cd\u03bd \u03c4\u03bf \u03c1\u03b5\u03cd\u03bc\u03b1 \u03c0\u03bf\u03c5 \u03c0\u03b7\u03b3\u03b1\u03af\u03bd\u03b5\u03b9 \u03c3\u03c4\u03b9\u03c2 3 \u03c6\u03ac\u03c3\u03b5\u03b9\u03c2 \u03c4\u03bf\u03c5 \u03bc\u03bf\u03c4\u03ad\u03c1. \u0391\u03c5\u03c4\u03bf\u03af \u03bf\u03b9 \u03b1\u03b9\u03c3\u03b8\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 \u03b1\u03bd\u03b9\u03c7\u03bd\u03b5\u03cd\u03bf\u03c5\u03bd \u03ba\u03b1\u03b9 \u03b5\u03b9\u03b4\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bd \u03cc\u03c4\u03b1\u03bd \u03ad\u03c7\u03c9 \u03b2\u03c1\u03b1\u03c7\u03c5\u03ba\u03c5\u03ba\u03bb\u03c9\u03bc\u03ad\u03bd\u03bf \u03ae \u03b3\u03b5\u03b9\u03c9\u03bc\u03ad\u03bd\u03bf \u03ba\u03cd\u03ba\u03bb\u03c9\u03bc\u03b1. \u039c\u03b5\u03c1\u03b9\u03ba\u03bf\u03af \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ad\u03c2 \u03b5\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5\u03bd \u03bc\u03cc\u03bd\u03bf \u03b3\u03b9\u03b1 \u03b2\u03c1\u03b1\u03c7\u03c5\u03ba\u03cd\u03ba\u03bb\u03c9\u03bc\u03b1 \u03ae \u03b3\u03b5\u03af\u03c9\u03c3\u03b7 \u03c3\u03c4\u03b7\u03bd \u03c0\u03c1\u03ce\u03c4\u03b7 \u03b5\u03bd\u03c4\u03bf\u03bb\u03ae \u03b3\u03b9\u03b1 \u03c4\u03c1\u03ad\u03be\u03b9\u03bc\u03bf \u03c4\u03bf\u03c5 \u03ba\u03c5\u03ba\u03bb\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2. \u0397 \u03b4\u03b9\u03b1\u03b4\u03b9\u03ba\u03b1\u03c3\u03af\u03b1 \u03b5\u03c0\u03b9\u03b2\u03bb\u03ad\u03c0\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03ba\u03ac\u03c0\u03bf\u03b9\u03bf \u03bb\u03bf\u03b3\u03b9\u03c3\u03bc\u03b9\u03ba\u03cc \u03c0\u03bf\u03c5 \u03bc\u03b1\u03c2 \u03b4\u03af\u03bd\u03b5\u03b9 Alarm \u03ba\u03b1\u03b9 \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03b4\u03b9\u03b1\u03ba\u03cc\u03c0\u03c4\u03b7\u03c2 \u03c0\u03bf\u03c5 \u03b1\u03c0\u03bf\u03c3\u03c5\u03bd\u03b4\u03ad\u03b5\u03b9 \u03c4\u03bf\u03bd \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03b1\u03c0\u03cc \u03c4\u03bf drive. \u039a\u03ac\u03c0\u03bf\u03b9\u03b1 \u0399nverter \u03b4\u03b5\u03bd \u03ad\u03c7\u03bf\u03c5\u03bd\u03b5 \u03b1\u03c5\u03c4\u03cc\u03bd \u03c4\u03bf\u03bd \u03ad\u03bb\u03b5\u03b3\u03c7\u03bf \u03bc\u03b5 \u03b1\u03c0\u03bf\u03c4\u03ad\u03bb\u03b5\u03c3\u03bc\u03b1 \u03c4\u03b7\u03bd \u03ba\u03b1\u03c4\u03b1\u03c3\u03c4\u03c1\u03bf\u03c6\u03ae \u03c4\u03bf\u03c5 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03c3\u03b5 \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 \u03b2\u03c1\u03b1\u03c7\u03c5\u03ba\u03c5\u03ba\u03bb\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2. \u0392\u03ad\u03b2\u03b1\u03b9\u03b1 \u03ad\u03bd\u03b1\u03c2 driver \u03b4\u03b5\u03bd \u03ba\u03b1\u03c4\u03b1\u03c1\u03b3\u03b5\u03af \u03c4\u03b9\u03c2 \u03ac\u03bb\u03bb\u03b5\u03c2 \u03c0\u03c1\u03bf\u03c3\u03c4\u03b1\u03c3\u03af\u03b5\u03c2 \u03c4\u03bf\u03c5 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03b1\u03c0\u03cc \u03c5\u03c0\u03b5\u03c1\u03ad\u03bd\u03c4\u03b1\u03c3\u03b7 \u03b7 \u03c5\u03c0\u03b5\u03c1\u03b8\u03ad\u03c1\u03bc\u03b1\u03bd\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03c3\u03c5\u03bd\u03c5\u03c0\u03ac\u03c1\u03c7\u03bf\u03c5\u03bd.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-298\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_13_inverter_3-300x203.jpg\" alt=\"\" width=\"432\" height=\"292\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_13_inverter_3-300x203.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_13_inverter_3-600x406.jpg 600w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_13_inverter_3.jpg 617w\" sizes=\"(max-width: 432px) 100vw, 432px\" \/><\/p>\n<p>\u039f\u03b9 Inverters, \u03c4\u03b1 IGBT \u03ba\u03b1\u03b9 \u03b7 \u03ba\u03ac\u03c1\u03c4\u03b1 snubber, \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03b7\u03bc\u03ad\u03bd\u03bf\u03b9 \u03c3\u03b5 \u03c8\u03ae\u03ba\u03c4\u03c1\u03b1 \u03ba\u03ac\u03c4\u03c9 \u03b1\u03c0\u03cc \u03ba\u03ac\u03b8\u03b5 \u03bc\u03af\u03b1 \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 3 \u03c3\u03b5\u03b9\u03c1\u03ad\u03c2 \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ce\u03bd.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-299\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_14_PMW-300x201.jpg\" alt=\"\" width=\"434\" height=\"291\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_14_PMW-300x201.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_14_PMW.jpg 553w\" sizes=\"(max-width: 434px) 100vw, 434px\" \/><\/p>\n<p>\u038c\u03bb\u03bf\u03b9 \u03bf\u03b9 \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ad\u03c2 Drivers \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bd \u03b4\u03b9\u03b1\u03bc\u03cc\u03c1\u03c6\u03c9\u03c3\u03b7 PWM \u03bc\u03b5 \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03b5\u03c4\u03b9\u03ba\u03cc \u03cc\u03bc\u03c9\u03c2 \u03c0\u03bb\u03ac\u03c4\u03bf\u03c2 \u03c0\u03b1\u03bb\u03bc\u03bf\u03cd \u03c0\u03bf\u03c5 \u03c0\u03ac\u03b5\u03b9 \u03c3\u03c4\u03bf\u03bd \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1.<\/p>\n<p><strong>\u03a3\u03b7\u03bc\u03b5\u03af\u03c9\u03c3\u03b7<\/strong><strong>:<\/strong> \u00a0\u0393\u03b9\u03b1\u03c4\u03af \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bc\u03b5 IGBT:<\/p>\n<p>\u0388\u03c7\u03b5\u03b9 \u03b5\u03c0\u03b9\u03ba\u03c1\u03b1\u03c4\u03ae\u03c3\u03b5\u03b9 \u03bf \u03b7\u03bc\u03b9\u03b1\u03b3\u03c9\u03b3\u03cc\u03c2 \u03c0\u03bf\u03c5 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bc\u03b5 \u03bd\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 IGBT \u03b3\u03b9\u03b1\u03c4\u03af \u03ad\u03c7\u03b5\u03b9 \u03c0\u03ac\u03c1\u03b1 \u03c0\u03bf\u03bb\u03cd \u03b3\u03c1\u03ae\u03b3\u03bf\u03c1\u03b7 \u03b1\u03c0\u03cc\u03ba\u03c1\u03b9\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03c6\u03b8\u03ac\u03c3\u03b5\u03b9 \u03c5\u03c8\u03b7\u03bb\u03ad\u03c2 \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b5\u03c2.<\/p>\n<p>\u03a3\u03c4\u03bf \u03c0\u03b1\u03c1\u03b1\u03c0\u03ac\u03bd\u03c9 \u03b4\u03b9\u03ac\u03b3\u03c1\u03b1\u03bc\u03bc\u03b1 \u03b5\u03bc\u03c6\u03b1\u03bd\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03bc\u03cc\u03bd\u03bf 7 \u03c0\u03b1\u03bb\u03bc\u03bf\u03af \u03c3\u03b5 \u03ba\u03ac\u03b8\u03b5 \u03c0\u03bb\u03b5\u03c5\u03c1\u03ac, \u03b1\u03bb\u03bb\u03ac \u03c3\u03c4\u03b7\u03bd \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1 1750 \u03c0\u03b1\u03bb\u03bc\u03bf\u03af \u03ae \u03c0\u03b5\u03c1\u03b9\u03c3\u03c3\u03cc\u03c4\u03b5\u03c1\u03bf\u03b9 \u03b8\u03b1 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b5\u03bc\u03c6\u03b1\u03bd\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9. \u0391\u03c5\u03c4\u03ae \u03b7 \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 PWM \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03ba\u03c5\u03bc\u03b1\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc 3,5 kHz \u03ad\u03c9\u03c2 15 kHz, \u03c0\u03c1\u03ac\u03b3\u03bc\u03b1 \u03c0\u03bf\u03c5 \u03c3\u03b7\u03bc\u03b1\u03af\u03bd\u03b5\u03b9 \u03cc\u03c4\u03b9 \u03b1\u03ba\u03bf\u03cd\u03b3\u03b5\u03c4\u03b1\u03b9. \u0395\u03af\u03bd\u03b1\u03b9 \u03b5\u03c0\u03af\u03c3\u03b7\u03c2 \u03b3\u03bd\u03c9\u03c3\u03c4\u03cc \u03c9\u03c2 \u03c6\u03ad\u03c1\u03c9\u03bd\u00a0 \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1, \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03ae \u03b1\u03c0\u03cc \u03c4\u03bf\u03c5\u03c2 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c3\u03cc\u03c4\u03b5\u03c1\u03bf\u03c5\u03c2 \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ad\u03c2 VFD. \u039c\u03af\u03b1 \u03c7\u03b1\u03bc\u03b7\u03bb\u03ae \u03c6\u03ad\u03c1\u03c9\u03bd \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03ad\u03c7\u03b5\u03b9 \u03b5\u03bd\u03bf\u03c7\u03bb\u03b7\u03c4\u03b9\u03ba\u03cc \u03b8\u03cc\u03c1\u03c5\u03b2\u03bf, \u03b1\u03bb\u03bb\u03ac \u03bc\u03af\u03b1 \u03c5\u03c8\u03b7\u03bb\u03cc\u03c4\u03b5\u03c1\u03b7 \u03c6\u03ad\u03c1\u03c9\u03bd \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c0\u03b1\u03c1\u03ac\u03b3\u03b5\u03b9 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c3\u03cc\u03c4\u03b5\u03c1\u03b7 \u03b8\u03b5\u03c1\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c3\u03c4\u03bf driver \u00a0\u03ba\u03b1\u03b9 \u03c3\u03c4\u03bf\u03bd \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1. \u0391\u03bd \u03bf \u03b8\u03cc\u03c1\u03c5\u03b2\u03bf\u03c2 \u03c4\u03c9\u03bd \u03c6\u03ad\u03c1\u03c9\u03bd \u03c3\u03c5\u03c7\u03bd\u03bf\u03c4\u03ae\u03c4\u03c9\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03bf\u03bb\u03cd \u03b4\u03c5\u03bd\u03b1\u03c4\u03cc\u03c2 \u03b9\u03b4\u03b9\u03b1\u03af\u03c4\u03b5\u03c1\u03b1 \u03bc\u03b1\u03b6\u03af \u03bc\u03b5 \u03c4\u03bf\u03c5\u03c2 \u03b1\u03bd\u03b5\u03bc\u03b9\u03c3\u03c4\u03ae\u03c1\u03b5\u03c2 \u03c4\u03c1\u03bf\u03c6\u03bf\u03b4\u03bf\u03c3\u03af\u03b1\u03c2, LC \u03c6\u03af\u03bb\u03c4\u03c1\u03b1 \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5 VFD \u03ba\u03b1\u03b9 \u03c4\u03bf\u03c5 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03ba\u03b1\u03b9 \u03bf \u03b8\u03cc\u03c1\u03c5\u03b2\u03bf\u03c2 \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03ac \u03c3\u03b5 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03c6\u03af\u03bb\u03c4\u03c1\u03bf.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-300\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_14_PMW_2-300x236.jpg\" alt=\"\" width=\"395\" height=\"311\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_14_PMW_2-300x236.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_14_PMW_2.jpg 472w\" sizes=\"(max-width: 395px) 100vw, 395px\" \/><\/p>\n<p>\u03a7\u03c9\u03c1\u03af\u03c2 driver, \u03bf \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1\u03c2 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03b5\u03af \u03bc\u03b5 \u03c0\u03bb\u03ae\u03c1\u03b7 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03ae \u03bd\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03b7\u03bc\u03ad\u03bd\u03bf\u03c2.\u039c\u03b5 \u03ad\u03bd\u03b1 driver, \u03bf \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1\u03c2 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03c0\u03ac\u03b5\u03b9 \u03c3\u03b5 \u03ad\u03bd\u03b1\u03bd \u03b1\u03c1\u03b9\u03b8\u03bc\u03cc \u03b4\u03b9\u03b1\u03c6\u03bf\u03c1\u03b5\u03c4\u03b9\u03ba\u03ce\u03bd \u03c4\u03b1\u03c7\u03c5\u03c4\u03ae\u03c4\u03c9\u03bd.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-301\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_15_control-300x207.jpg\" alt=\"\" width=\"403\" height=\"278\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_15_control-300x207.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_15_control.jpg 552w\" sizes=\"(max-width: 403px) 100vw, 403px\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-303\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_16_danfoss-300x148.jpg\" alt=\"\" width=\"454\" height=\"224\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_16_danfoss-300x148.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_16_danfoss.jpg 508w\" sizes=\"(max-width: 454px) 100vw, 454px\" \/><\/p>\n<p>\u03a3\u03c4\u03b7\u03bd \u03c6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 \u03b2\u03bb\u03ad\u03c0\u03bf\u03c5\u03bc\u03b5 \u03bc\u03af\u03b1 \u03b4\u03b9\u03b1\u03bc\u03cc\u03c1\u03c6\u03bf\u03c3\u03b7 PWM \u03c0\u03bf\u03c5 \u03c0\u03ac\u03b5\u03b9 \u03c3\u03c4\u03bf \u03bc\u03bf\u03c4\u03ad\u03c1 \u03c7\u03c9\u03c1\u03af\u03c2 \u03ad\u03bb\u03b5\u03b3\u03c7\u03bf \u03ba\u03b1\u03b9 \u03b4\u03b5\u03be\u03b9\u03ac \u03bc\u03b5 \u03ad\u03bb\u03b5\u03b3\u03c7\u03bf VVC+ \u03c4\u03b7\u03c2 \u03b5\u03c4\u03b1\u03b9\u03c1\u03b5\u03af\u03b1\u03c2 Danfoss.<\/p>\n<p>\u0397 \u03b5\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03b5\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5 \u03ba\u03b1\u03b9 \u03c1\u03cd\u03b8\u03bc\u03b9\u03c3\u03b7\u03c2 \u03c0\u03b1\u03c1\u03b1\u03ba\u03bf\u03bb\u03bf\u03c5\u03b8\u03b5\u03af \u03ba\u03b1\u03b9 \u03c4\u03b1 3 \u03c4\u03bc\u03ae\u03bc\u03b1\u03c4\u03b1, \u03ba\u03ac\u03bd\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c0\u03bf\u03bb\u03bb\u03bf\u03cd\u03c2 \u03c5\u03c0\u03bf\u03bb\u03bf\u03b3\u03b9\u03c3\u03bc\u03bf\u03cd\u03c2\u03ba\u03b1\u03b9 \u03b4\u03b9\u03bf\u03c1\u03b8\u03ce\u03c3\u03b5\u03b9\u03c2 \u03c3\u03c4\u03bf \u03b5\u03be\u03b5\u03c1\u03c7\u03cc\u03bc\u03b5\u03bd\u03bf \u03c3\u03ae\u03bc\u03b1. \u039f \u03ad\u03bb\u03b5\u03b3\u03c7\u03bf\u03c2 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03b5\u03bb\u03b5\u03b3\u03ba\u03c4\u03ae PID \u03ba\u03b1\u03b9 \u03b1\u03b9\u03c3\u03b8\u03b7\u03c4\u03ae\u03c1\u03b1 4-20 mA \u03ae 0-10 V.\u00a0\u039f\u03b9 \u03c6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b5\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03b1\u03bd\u03ac\u03bb\u03c5\u03c3\u03b7 \u03c4\u03c9\u03bd \u03ba\u03c5\u03ba\u03bb\u03c9\u03bc\u03ac\u03c4\u03c9\u03bd \u03c4\u03c9\u03bd Inverter \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b1 \u03bc\u03b5\u03b3\u03ac\u03bb\u03b1 Inverter &gt; 400\u0397p \u03c4\u03b7\u03c2 \u03b5\u03c4\u03b1\u03b9\u03c1\u03b5\u03af\u03b1\u03c2 Danfoss \u03bc\u03b5 \u03ad\u03b4\u03c1\u03b1 \u03c4\u03b7\u03bd \u0394\u03b1\u03bd\u03af\u03b1.\u00a0 \u00a0<a href=\"https:\/\/www.danfoss.com\/en\/products\/\">https:\/\/www.danfoss.com\/en\/products\/<\/a><\/p>\n<p>&nbsp;<\/p>\n<h2>Troubleshooting \u03c3\u03b5 \u03ad\u03bd\u03b1 VFD Driver<\/h2>\n<p>\u0395\u03ac\u03bd \u03b3\u03bd\u03c9\u03c1\u03af\u03b6\u03bf\u03c5\u03bc\u03b5 \u03b1\u03c0\u03cc \u03c4\u03b9 \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03b5\u03af\u03c4\u03b5 \u03c4\u03b1 \u03c4\u03bc\u03ae\u03bc\u03b1\u03c4\u03b1 \u03b5\u03bd\u03cc\u03c2 VFD Drive \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bc\u03b5 \u03c0\u03bf\u03bb\u03cd \u03b5\u03cd\u03ba\u03bf\u03bb\u03b1 \u03bd\u03b1 \u03b2\u03c1\u03bf\u03cd\u03bc\u03b5 \u03ba\u03ac\u03c0\u03bf\u03b9\u03b1 \u03b2\u03bb\u03ac\u03b2\u03b7 \u03bc\u03b5\u03c4\u03c1\u03ce\u03bd\u03c4\u03b1\u03c2 \u03b4\u03c5\u03bd\u03b1\u03bc\u03b9\u03ba\u03ac \u03bc\u03b5 \u03ad\u03bd\u03b1 \u03c0\u03bf\u03bb\u03cd\u03bc\u03b5\u03c4\u03c1\u03bf.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-304\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble1-300x117.jpg\" alt=\"\" width=\"490\" height=\"191\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble1-300x117.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble1-600x234.jpg 600w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble1-768x300.jpg 768w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble1.jpg 848w\" sizes=\"(max-width: 490px) 100vw, 490px\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-305\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble2-300x229.jpg\" alt=\"\" width=\"369\" height=\"282\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble2-300x229.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble2-600x458.jpg 600w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble2.jpg 698w\" sizes=\"(max-width: 369px) 100vw, 369px\" \/><\/p>\n<p>B\u03ae\u03bc\u03b1 1: \u0395\u03bb\u03ad\u03b3\u03be\u03c4\u03b5 \u03c4\u03bf\u03bd \u03b1\u03bd\u03bf\u03c1\u03b8\u03c9\u03c4\u03ae \u03b5\u03b9\u03c3\u03cc\u03b4\u03bf\u03c5.<\/p>\n<p>\u03a0\u03c1\u03b9\u03bd \u03be\u03b5\u03ba\u03b9\u03bd\u03ae\u03c3\u03b5\u03c4\u03b5, \u03b4\u03b5\u03bd \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03be\u03b5\u03c7\u03bd\u03ac\u03c4\u03b5 \u03c0\u03ac\u03bd\u03c4\u03b1 \u03bd\u03b1 \u03b1\u03c6\u03b1\u03b9\u03c1\u03b5\u03af\u03c4\u03b5 \u03c4\u03b7\u03bd \u03b9\u03c3\u03c7\u03cd \u03ba\u03b1\u03b9 \u03bd\u03b1 \u03c0\u03b5\u03c1\u03b9\u03bc\u03ad\u03bd\u03b5\u03c4\u03b5 \u03bc\u03ad\u03c7\u03c1\u03b9 \u03bd\u03b1 \u03bc\u03b7\u03bd \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03c4\u03ac\u03c3\u03b7 \u03c3\u03c4\u03bf\u03bd \u03b4\u03af\u03b1\u03c5\u03bb\u03bf DC. \u03a3\u03c4\u03b7 \u03c3\u03c5\u03bd\u03ad\u03c7\u03b5\u03b9\u03b1 \u03bc\u03b5\u03c4\u03c1\u03ae\u03c3\u03c4\u03b5 \u03c4\u03b7\u03bd \u03c0\u03c4\u03ce\u03c3\u03b7 \u03c4\u03ac\u03c3\u03b7\u03c2 \u03c3\u03c4\u03b7\u03bd \u03b4\u03af\u03bf\u03b4\u03bf- \u03b8\u03c5\u03c1\u03af\u03c3\u03c4\u03bf\u03c1 \u03ba\u03b1\u03b9 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03ad\u03c7\u03b5\u03b9 \u03c4\u03b9\u03bc\u03ad\u03c2 \u03c3\u03cd\u03bc\u03c6\u03c9\u03bd\u03b1 \u03bc\u03b5 \u03c4\u03bf \u03c6\u03c5\u03bb\u03bb\u03ac\u03b4\u03b9\u03bf \u03c4\u03bf\u03c5 \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ae \u03c0.\u03c7 (0,3 V \u03c3\u03b5 0,6 V) \u03c3\u03b5 \u03ba\u03ac\u03b8\u03b5 \u03b1\u03ba\u03c1\u03bf\u03b4\u03ad\u03ba\u03c4\u03b7 \u03b5\u03b9\u03c3\u03cc\u03b4\u03bf\u03c5. \u039c\u03af\u03b1 \u03c0\u03b9\u03b8\u03b1\u03bd\u03ae \u03b2\u03bb\u03ac\u03b2\u03b7 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03b3\u03ad\u03c6\u03c5\u03c1\u03b1 \u03b5\u03b9\u03c3\u03cc\u03b4\u03bf\u03c5 \u03bd\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03b9\u03b8\u03b1\u03bd\u03cc\u03c4\u03b1\u03c4\u03b1 \u03b2\u03c1\u03b1\u03c7\u03c5\u03ba\u03c5\u03ba\u03bb\u03c9\u03bc\u03ad\u03bd\u03b7. \u03a9\u03c3\u03c4\u03cc\u03c3\u03bf, \u03b1\u03bd \u03b4\u03b9\u03b1\u03b2\u03ac\u03c3\u03b5\u03c4\u03b5 \u03c4\u03bf \u03b1\u03bd\u03bf\u03b9\u03c7\u03c4\u03cc \u03ba\u03cd\u03ba\u03bb\u03c9\u03bc\u03b1 \u03c4\u03cc\u03c3\u03bf \u03bc\u03b5 +- \u03ae \u03b1\u03bd\u03ac\u03c0\u03bf\u03b4\u03b1 \u03c4\u03bf\u03c5\u03c2 \u03b1\u03ba\u03c1\u03bf\u03b4\u03ad\u03ba\u03c4\u03b5\u03c2, \u03c4\u03cc\u03c4\u03b5 \u03c0\u03b9\u03b8\u03b1\u03bd\u03cc\u03bd \u03bd\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03bd\u03bf\u03b9\u03ba\u03c4\u03ae \u03b7 \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 \u03c6\u03cc\u03c1\u03c4\u03b9\u03c3\u03b7\u03c2.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-306\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble3-300x230.jpg\" alt=\"\" width=\"528\" height=\"405\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble3-300x230.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble3-600x461.jpg 600w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble3.jpg 714w\" sizes=\"(max-width: 528px) 100vw, 528px\" \/><\/p>\n<p>\u0392\u03ae\u03bc\u03b1 2: \u0395\u03bb\u03ad\u03b3\u03be\u03c4\u03b5 \u03c4\u03b7\u03bd \u03ad\u03be\u03bf\u03b4\u03bf \u03c4\u03b7\u03c2 \u03bc\u03bf\u03bd\u03ac\u03b4\u03b1\u03c2 VFD driver<\/p>\n<p>\u039a\u03c1\u03b1\u03c4\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03bf \u03ba\u03cc\u03ba\u03ba\u03b9\u03bd\u03bf \u03b1\u03ba\u03c1\u03bf\u03b4\u03ad\u03ba\u03c4\u03b7 \u03c4\u03bf\u03c5 \u03c0\u03bf\u03bb\u03c5\u03bc\u03ad\u03c4\u03c1\u03bf\u03c5 \u03c3\u03c4\u03bf\u03bd \u03b1\u03c1\u03bd\u03b7\u03c4\u03b9\u03ba\u03cc \u03b4\u03af\u03b1\u03c5\u03bb\u03bf &#8220;-&#8220;, \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03ae\u03c3\u03c4\u03b5 \u03c4\u03bf \u03bc\u03b1\u03cd\u03c1\u03bf \u03ba\u03b1\u03bb\u03ce\u03b4\u03b9\u03bf \u03c3\u03b5 \u03ba\u03ac\u03b8\u03b5 \u03ad\u03bd\u03b1\u03bd \u03b1\u03c0\u03cc \u03c4\u03bf\u03c5\u03c2 \u03c4\u03c1\u03b5\u03b9\u03c2 \u03b1\u03ba\u03c1\u03bf\u03b4\u03ad\u03ba\u03c4\u03b5\u03c2 \u03b5\u03be\u03cc\u03b4\u03bf\u03c5 \u03c4\u03bf\u03c5 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1. \u0398\u03b1 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b4\u03b9\u03b1\u03b2\u03ac\u03c3\u03b5\u03c4\u03b5 \u03be\u03b1\u03bd\u03ac, \u03bc\u03af\u03b1 \u03bc\u03b9\u03ba\u03c1\u03ae \u03c0\u03c4\u03ce\u03c3\u03b7 \u03c4\u03ac\u03c3\u03b7\u03c2 \u03c4\u03b7\u03c2 \u03b4\u03b9\u03cc\u03b4\u03bf\u03c5. \u03a4\u03ce\u03c1\u03b1, \u03b1\u03bd\u03c4\u03b9\u03c3\u03c4\u03c1\u03ad\u03c8\u03c4\u03b5 \u03c4\u03bf \u03bc\u03b1\u03cd\u03c1\u03bf \u03ba\u03b1\u03bb\u03ce\u03b4\u03b9\u03bf \u03c3\u03c4\u03bf\u03bd \u03b8\u03b5\u03c4\u03b9\u03ba\u03cc \u03b4\u03af\u03b1\u03c5\u03bb\u03bf &#8220;+&#8221; \u03ba\u03b1\u03b9 \u03c4\u03bf \u03ba\u03cc\u03ba\u03ba\u03b9\u03bd\u03bf \u03ba\u03b1\u03bb\u03ce\u03b4\u03b9\u03bf \u03c3\u03b5 \u03ba\u03ac\u03b8\u03b5 \u03b1\u03ba\u03c1\u03bf\u03b4\u03ad\u03ba\u03c4\u03b7 \u03b5\u03be\u03cc\u03b4\u03bf\u03c5 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1. \u0398\u03b1 \u03c3\u03b1\u03c2 \u03b2\u03b3\u03ac\u03bb\u03b5\u03b9 \u03bc\u03b9\u03b1 \u03c0\u03c4\u03ce\u03c3\u03b7 \u03c4\u03ac\u03c3\u03b7\u03c2 \u03b4\u03b9\u03cc\u03b4\u03bf\u03c5 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9. \u0395\u03ac\u03bd \u03b4\u03b5\u03bd \u03c3\u03c5\u03bc\u03b2\u03b1\u03af\u03bd\u03b5\u03b9 \u03ba\u03ac\u03c4\u03b9 \u03c4\u03ad\u03c4\u03bf\u03b9\u03bf \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b9\u03c2 \u03b4\u03cd\u03bf \u03c6\u03bf\u03c1\u03ad\u03c2 \u03c4\u03cc\u03c4\u03b5 \u03b7 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ae \u03b5\u03be\u03cc\u03b4\u03bf\u03c5 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b2\u03c1\u03b1\u03c7\u03c5\u03ba\u03c5\u03ba\u03bb\u03c9\u03bc\u03ad\u03bd\u03b7. \u0395\u03ac\u03bd \u03b4\u03b9\u03b1\u03b2\u03ac\u03c3\u03b5\u03c4\u03b5 \u03ad\u03bd\u03b1 \u03b1\u03bd\u03bf\u03b9\u03c7\u03c4\u03cc \u03ba\u03cd\u03ba\u03bb\u03c9\u03bc\u03b1, \u03c4\u03cc\u03c4\u03b5 \u03b5\u03af\u03c4\u03b5 \u03b7 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03ae \u03b5\u03be\u03cc\u03b4\u03bf\u03c5 \u03b5\u03af\u03bd\u03b1\u03b9 \u03ba\u03b1\u03c4\u03b5\u03c3\u03c4\u03c1\u03b1\u03bc\u03bc\u03ad\u03bd\u03b7 \u03b5\u03af\u03c4\u03b5 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03bd\u03bf\u03b9\u03c7\u03c4\u03ae \u03b7 \u03b1\u03c3\u03c6\u03ac\u03bb\u03b5\u03b9\u03b1 Bus.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-307\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble4-300x224.jpg\" alt=\"\" width=\"502\" height=\"375\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble4-300x224.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble4-600x447.jpg 600w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble4.jpg 711w\" sizes=\"(max-width: 502px) 100vw, 502px\" \/><\/p>\n<p>\u0392\u03ae\u03bc\u03b1 3: \u0395\u03bb\u03ad\u03b3\u03be\u03c4\u03b5 \u03c4\u03bf\u03c5\u03c2 \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ad\u03c2 \u03b4\u03b9\u03b1\u03cd\u03bb\u03bf\u03c5<\/p>\n<p>\u03a0\u03c1\u03ce\u03c4\u03bf\u03bd, \u03b5\u03bb\u03ad\u03b3\u03be\u03c4\u03b5 \u03c6\u03c5\u03c3\u03b9\u03ba\u03ac \u03c4\u03bf\u03c5\u03c2 \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ad\u03c2 \u03b3\u03b9\u03b1 \u03c3\u03b7\u03bc\u03ac\u03b4\u03b9\u03b1 \u03b2\u03bb\u03ac\u03b2\u03b7\u03c2, \u03cc\u03c0\u03c9\u03c2 \u03c1\u03b1\u03b3\u03b9\u03c3\u03bc\u03ad\u03bd\u03bf \u03ae \u03c0\u03b1\u03c1\u03b1\u03bc\u03bf\u03c1\u03c6\u03c9\u03bc\u03ad\u03bd\u03bf \u03c0\u03b5\u03c1\u03af\u03b2\u03bb\u03b7\u03bc\u03b1, \u03ae \u03c4\u03bf \u03b2\u03cd\u03c3\u03bc\u03b1 \u03c0\u03af\u03b5\u03c3\u03b7\u03c2 \u03c0\u03bf\u03c5 \u03b2\u03b3\u03ae\u03ba\u03b5 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03ba\u03bf\u03c1\u03c5\u03c6\u03ae. \u03a3\u03c4\u03b7 \u03c3\u03c5\u03bd\u03ad\u03c7\u03b5\u03b9\u03b1, \u03c1\u03c5\u03b8\u03bc\u03af\u03c3\u03c4\u03b5 \u03c4\u03bf \u03c0\u03bf\u03bb\u03cd\u03bc\u03b5\u03c4\u03c1\u03bf \u03c3\u03b5 \u03bc\u03ad\u03c4\u03c1\u03b7\u03c3\u03b7 Ohm \u03ba\u03b1\u03b9 \u03be\u03b5\u03ba\u03b9\u03bd\u03ae\u03c3\u03c4\u03b5 \u03c4\u03b7 \u03bc\u03ad\u03c4\u03c1\u03b7\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7\u03c2 \u03c3\u03c4\u03bf\u03bd \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ae, \u03cc\u03c0\u03c9\u03c2 \u03c6\u03b1\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u0395\u03b9\u03ba\u03cc\u03bd\u03b1.\u00a0 \u0393\u03b9\u03b1 \u03ad\u03bd\u03b1\u03bd \u03b2\u03c1\u03b1\u03c7\u03c5\u03ba\u03c5\u03ba\u03bb\u03c9\u03bc\u03ad\u03bd\u03bf \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ae, \u03c4\u03bf \u03c0\u03bf\u03bb\u03c5\u03bc\u03ad\u03c4\u03c1\u03bf \u03b8\u03b1 \u03b5\u03bc\u03c6\u03b1\u03bd\u03af\u03c3\u03b5\u03b9 \u03b1\u03bd\u03ac\u03b3\u03bd\u03c9\u03c3\u03b7 \u03ba\u03bf\u03bd\u03c4\u03ac \u03c3\u03c4\u03b1 0 Ohm. \u03a3\u03b5 \u03b1\u03c5\u03c4\u03ae \u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7, \u03b8\u03b1 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03c8\u03ac\u03be\u03b5\u03c4\u03b5 \u03b3\u03b9\u03b1 \u03ba\u03ac\u03c0\u03bf\u03b9\u03bf \u03b2\u03c1\u03b1\u03c7\u03c5\u03ba\u03cd\u03ba\u03bb\u03c9\u03bc\u03b1. \u039f \u03bc\u03cc\u03bd\u03bf\u03c2 \u03c4\u03c1\u03cc\u03c0\u03bf\u03c2 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03b5\u03af\u03bc\u03b1\u03c3\u03c4\u03b5 \u03c3\u03af\u03b3\u03bf\u03c5\u03c1\u03bf\u03b9 \u03b3\u03b9\u03b1 \u03b1\u03c5\u03c4\u03cc \u03b5\u03af\u03bd\u03b1\u03b9 \u03bd\u03b1 \u03b2\u03ac\u03bb\u03bf\u03c5\u03bc\u03b5 \u03ad\u03bd\u03b1 \u03c0\u03b1\u03bb\u03bc\u03bf\u03b3\u03c1\u03ac\u03c6\u03bf \u03c3\u03c4\u03bf Bus \u03ba\u03b1\u03b9 \u03bd\u03b1 \u03b4\u03bf\u03cd\u03bc\u03b5 \u03c4\u03bf\u03bd \u03ba\u03c5\u03bc\u03b1\u03c4\u03b9\u03c3\u03bc\u03cc.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-308\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble5-300x197.jpg\" alt=\"\" width=\"499\" height=\"328\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble5-300x197.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_17_trouble5.jpg 500w\" sizes=\"(max-width: 499px) 100vw, 499px\" \/><\/p>\n<h2>\u0392\u03b1\u03c3\u03b9\u03ba\u03cc \u03b4\u03b9\u03ac\u03b3\u03c1\u03b1\u03bc\u03bc\u03b1 \u03b3\u03b9\u03b1 \u03bc\u03b9\u03ba\u03c1\u03ac Inverter \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 \u03bc\u03b5\u03c1\u03b9\u03ba\u03ce\u03bd Hp.<img loading=\"lazy\" class=\"alignnone wp-image-309\" src=\"http:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_18-300x298.jpg\" alt=\"\" width=\"590\" height=\"586\" srcset=\"https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_18-300x298.jpg 300w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_18-100x100.jpg 100w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_18-150x150.jpg 150w, https:\/\/dimathanasopoulos.com\/wp-content\/uploads\/2018\/08\/vfd_18.jpg 376w\" sizes=\"(max-width: 590px) 100vw, 590px\" \/><\/h2>\n<p>\u038c\u03c0\u03c9\u03c2 \u03b2\u03bb\u03ad\u03c0\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c4\u03b7\u03bd \u03c0\u03b1\u03c1\u03b1\u03c0\u03ac\u03bd\u03c9 \u03c6\u03c9\u03c4\u03bf\u03b3\u03c1\u03b1\u03c6\u03af\u03b1 \u03b7 \u03c3\u03c5\u03bd\u03b4\u03b5\u03c3\u03bc\u03bf\u03bb\u03bf\u03b3\u03af\u03b1 \u03b5\u03bd\u03cc\u03c2 \u03c4\u03ad\u03c4\u03bf\u03b9\u03bf\u03c5 Inverter \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03bf\u03bb\u03cd \u03b5\u03cd\u03ba\u03bf\u03bb\u03b7 , \u03c4\u03c1\u03b9\u03c6\u03b1\u03c3\u03b9\u03ba\u03ae \u03c6\u03ac\u03c3\u03b7 \u03c4\u03c1\u03bf\u03c6\u03bf\u03b4\u03bf\u03c3\u03af\u03b1\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03c1\u03af\u03b1 \u03ba\u03b1\u03bb\u03ce\u03b4\u03b9\u03b1 \u03c4\u03c1\u03bf\u03c6\u03bf\u03b4\u03bf\u03c4\u03bf\u03cd\u03bd \u03c4\u03bf\u03bd \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1. \u03a0\u03bf\u03bb\u03bb\u03bf\u03af \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ad\u03c2 \u03bc\u03b1\u03c2 \u03b4\u03af\u03bd\u03bf\u03c5\u03bd \u03c4\u03b7\u03bd \u03b4\u03c5\u03bd\u03b1\u03c4\u03cc\u03c4\u03b7\u03c4\u03b1 \u03bc\u03b5 \u03bc\u03bf\u03bd\u03bf\u03c6\u03b1\u03c3\u03b9\u03ba\u03ae \u03c0\u03b1\u03c1\u03bf\u03c7\u03ae \u03bd\u03b1 \u03c3\u03c5\u03bd\u03b4\u03ad\u03bf\u03c5\u03bc\u03b5 \u03c4\u03c1\u03b9\u03c6\u03b1\u03c3\u03b9\u03ba\u03ac \u03bc\u03bf\u03c4\u03ad\u03c1 \u03b1\u03c6\u03bf\u03cd \u03c4\u03bf \u03ba\u03cd\u03ba\u03bb\u03c9\u03bc\u03b1 \u03c4\u03bf\u03c5 \u03c0\u03c5\u03ba\u03bd\u03c9\u03c4\u03ae \u03c0\u03bf\u03c5 \u03bc\u03b5\u03c4\u03b1\u03c4\u03c1\u03ad\u03c0\u03b5\u03b9 \u03c4\u03bf \u03bc\u03bf\u03bd\u03bf\u03c6\u03b1\u03c3\u03b9\u03ba\u03cc \u03b4\u03af\u03ba\u03c4\u03c5\u03bf \u03c3\u03b5 \u03c4\u03c1\u03b9\u03c6\u03b1\u03c3\u03b9\u03ba\u03cc \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03bd\u03c3\u03c9\u03bc\u03b1\u03c4\u03c9\u03bc\u03ad\u03bd\u03bf \u03c3\u03c4\u03b7\u03bd \u03c0\u03bb\u03b1\u03ba\u03ad\u03c4\u03b1.<\/p>\n<p>\u0392\u03bb\u03ad\u03c0\u03bf\u03c5\u03bc\u03b5 \u03b5\u03c0\u03af\u03c3\u03b7\u03c2 \u03cc\u03c4\u03b9 \u03c3\u03c4\u03b9\u03c2 \u03b5\u03b9\u03c3\u03cc\u03b4\u03bf\u03c5\u03c2 DI1, DI2, DI3 \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bc\u03b5 \u03bd\u03b1 \u03b2\u03ac\u03bb\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b7\u03bd \u03b5\u03ba\u03ba\u03af\u03bd\u03b7\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03bc\u03bf\u03c4\u03b5\u03c1 Stop-Start, \u00a0\u03bd\u03b1 \u03ba\u03ac\u03bd\u03bf\u03c5\u03bc\u03b5 \u03b1\u03bd\u03b1\u03c3\u03c4\u03c1\u03bf\u03c6\u03ae \u03c3\u03c4\u03bf \u03bc\u03bf\u03c4\u03ad\u03c1 \u03b1\u03bb\u03bb\u03ac \u03bd\u03b1 \u03c0\u03ac\u03c1\u03bf\u03c5\u03bc\u03b5 \u03ba\u03b1\u03b9 \u03ba\u03ac\u03c0\u03bf\u03b9\u03bf \u03c3\u03c6\u03ac\u03bb\u03bc\u03b1. \u0395\u03c0\u03af\u03c3\u03b7\u03c2 \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bc\u03b5 \u03bd\u03b1 \u03c0\u03b5\u03c4\u03cd\u03c7\u03bf\u03c5\u03bc\u03b5 \u03ba\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03b2\u03b1\u03bb\u03bb\u03cc\u03bc\u03b5\u03bd\u03b7 \u03c1\u03cd\u03b8\u03bc\u03b9\u03c3\u03b7 \u03c3\u03c4\u03c1\u03bf\u03c6\u03ce\u03bd \u03bc\u03b5 \u03b1\u03bd\u03b1\u03bb\u03bf\u03b3\u03b9\u03ba\u03ae \u03c4\u03ac\u03c3\u03b7 0-10 Volt \u03ae \u03b1\u03bd\u03b1\u03bb\u03bf\u03b3\u03b9\u03ba\u03cc \u03c1\u03b5\u03cd\u03bc\u03b1 0-20mA.<\/p>\n<p>&nbsp;<\/p>\n<p>\u03a3\u03c4\u03bf \u03c3\u03b5\u03bc\u03b9\u03bd\u03ac\u03c1\u03b9\u03bf \u03c0\u03bf\u03c5 \u03b8\u03b1 \u03b4\u03b9\u03b5\u03be\u03b1\u03c7\u03b8\u03b5\u03af \u03c3\u03c4\u03b7\u03bd \u0391\u03b8\u03ae\u03bd\u03b1 \u03c4\u03bf\u03bd \u03a3\u03b5\u03c0\u03c4\u03ad\u03bc\u03b2\u03c1\u03b9\u03bf \u03b8\u03b1 \u03c3\u03c5\u03bd\u03b4\u03ad\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf Inverter \u03bc\u03b5 \u03ad\u03bd\u03b1 PLC \u03c0\u03c7 Logo8 \u03ba\u03b1\u03b9 \u03b8\u03b1 \u03b1\u03c5\u03be\u03bf\u03bc\u03b5\u03b9\u03ce\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b9\u03c2 \u03c3\u03c4\u03c1\u03bf\u03c6\u03ad\u03c2 \u03c4\u03bf\u03c5 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03b1\u03c0\u03cc \u03c4\u03bf PLC.<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"2Ur1Cz2gOe\"><p><a href=\"http:\/\/dimathanasopoulos.com\/index.php\/2018\/07\/21\/new_seminar_plc_2_parts_ab_40_hours_30_hours\/\">(\u0395\u03bd\u03b1\u03c1\u03be\u03b7 \u03a3\u03ac\u03b2\u03b2\u03b1\u03c4\u03bf 15\/09\/2018) \u03a3\u03b5\u03bc\u03b9\u03bd\u03ac\u03c1\u03b9\u03b1 PLC \u03b4\u03cd\u03bf \u03ba\u03cd\u03ba\u03bb\u03c9\u03bd A+B (40 \u03ce\u03c1\u03b5\u03c2+30 \u03ce\u03c1\u03b5\u03c2) \u03c3\u03c4\u03bf \u039a\u0394\u0392\u039c 2 \u03c3\u03c4\u03bf \u0399\u0395\u039a \u0394\u03ad\u03bb\u03c4\u03b1 \u0391\u03b8\u03ae\u03bd\u03b1\u03c2 \u03c4\u03bf\u03bd \u03a3\u03b5\u03c0\u03c4\u03ad\u03bc\u03b2\u03c1\u03b9\u03bf.<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" src=\"http:\/\/dimathanasopoulos.com\/index.php\/2018\/07\/21\/new_seminar_plc_2_parts_ab_40_hours_30_hours\/embed\/#?secret=2Ur1Cz2gOe\" data-secret=\"2Ur1Cz2gOe\" width=\"600\" height=\"338\" title=\"&#8220;(\u0395\u03bd\u03b1\u03c1\u03be\u03b7 \u03a3\u03ac\u03b2\u03b2\u03b1\u03c4\u03bf 15\/09\/2018) \u03a3\u03b5\u03bc\u03b9\u03bd\u03ac\u03c1\u03b9\u03b1 PLC \u03b4\u03cd\u03bf \u03ba\u03cd\u03ba\u03bb\u03c9\u03bd A+B (40 \u03ce\u03c1\u03b5\u03c2+30 \u03ce\u03c1\u03b5\u03c2) \u03c3\u03c4\u03bf \u039a\u0394\u0392\u039c 2 \u03c3\u03c4\u03bf \u0399\u0395\u039a \u0394\u03ad\u03bb\u03c4\u03b1 \u0391\u03b8\u03ae\u03bd\u03b1\u03c2 \u03c4\u03bf\u03bd \u03a3\u03b5\u03c0\u03c4\u03ad\u03bc\u03b2\u03c1\u03b9\u03bf.&#8221; &#8212; \u0391\u03c5\u03c4\u03bf\u03bc\u03b1\u03c4\u03b9\u03c3\u03bc\u03bf\u03af\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<div class='sfsi_Sicons' style='width: 100%; display: inline-block; vertical-align: middle; text-align:left'><div style='margin:0px 8px 0px 0px; line-height: 24px'><span>Please follow and like us:<\/span><\/div><div class='sfsi_socialwpr'><div class='sf_fb' style='text-align:left;width:98px'><div class=\"fb-like\" href=\"https:\/\/dimathanasopoulos.com\/index.php\/2018\/08\/23\/what-is-a-inverter-vfd-driver-variable-frequency-driver-troubleshooting\/\" width=\"180\" send=\"false\" showfaces=\"false\"  action=\"like\" data-share=\"true\"data-layout=\"button\" ><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>VFD\u00a0 Variable Frequency Drives &nbsp; \u0393\u03b9\u03b1 \u03bd\u03b1 \u03b5\u03be\u03b5\u03c4\u03ac\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c0\u03c9\u03c2 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bf \u03ad\u03bb\u03b5\u03b3\u03c7\u03bf\u03c2 \u03c3\u03c4\u03c1\u03bf\u03c6\u03ce\u03bd \u03b5\u03bd\u03cc\u03c2 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b1 \u03bc\u03b5 VFD driver (Driver \u03bc\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03ae\u03c2 \u03c3\u03c5\u03c7\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2) \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b8\u03c5\u03bc\u03b7\u03b8\u03bf\u03cd\u03bc\u03b5 \u03c0\u03c1\u03ce\u03c4\u03b1 \u03ba\u03ac\u03c0\u03bf\u03b9\u03bf\u03c5\u03c2 \u03b2\u03b1\u03c3\u03b9\u03ba\u03bf\u03cd\u03c2 \u03cc\u03c1\u03bf\u03c5\u03c2. \u038c\u03c0\u03c9\u03c2 \u03b3\u03bd\u03c9\u03c1\u03af\u03b6\u03bf\u03c5\u03bc\u03b5 \u03bf\u03b9 \u03bc\u03bf\u03bd\u03bf\u03c6\u03b1\u03c3\u03b9\u03ba\u03bf\u03af \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 \u03ba\u03b1\u03b9 \u03bf\u03b9 \u03c4\u03c1\u03b9\u03c6\u03b1\u03c3\u03b9\u03ba\u03bf\u03af \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03bf\u03cd\u03bd \u03c3\u03cd\u03bc\u03c6\u03c9\u03bd\u03b1 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b1\u03c1\u03c7\u03ae \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1\u03c2 \u03c4\u03b7\u03c2 \u03b5\u03c0\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2. \u0391\u03c0\u03bf\u03c4\u03b5\u03bb\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03ad\u03bd\u03b1\u03bd \u03c1\u03cc\u03c4\u03bf\u03c1\u03b1 \u03ba\u03b1\u03b9 \u03ad\u03bd\u03b1\u03bd \u03c3\u03c4\u03ac\u03c4\u03b7 \u03c7\u03c9\u03c1\u03af\u03c2 \u03c6\u03c5\u03c3\u03b9\u03ba\u03ae \u03b5\u03c0\u03b1\u03c6\u03ae \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5 \u03b4\u03c1\u03bf\u03bc\u03ad\u03b1 \u00a0\u03ba\u03b1\u03b9 \u03c4\u03bf\u03c5 \u03c3\u03c4\u03ac\u03c4\u03b7. \u03a3\u03cd\u03bc\u03c6\u03c9\u03bd\u03b1 \u03bc\u03b5 \u03b1\u03c5\u03c4\u03ae\u03bd \u03c4\u03b7\u03bd \u03b1\u03c1\u03c7\u03ae \u03cc\u03c0\u03c9\u03c2 \u03b2\u03bb\u03ad\u03c0\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c4\u03bf \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03c3\u03c7\u03ae\u03bc\u03b1 \u03cc\u03c4\u03b1\u03bd \u03ad\u03bd\u03b1 \u03c0\u03bb\u03b1\u03af\u03c3\u03b9\u03bf \u03b2\u03c1\u03b5\u03b8\u03b5\u03af \u03bc\u03ad\u03c3\u03b1 \u03c3\u03b5 \u03bc\u03b5\u03c4\u03b1\u03b2\u03b1\u03bb\u03bb\u03cc\u03bc\u03b5\u03bd\u03bf \u03bc\u03b1\u03b3\u03bd\u03b7\u03c4\u03b9\u03ba\u03cc \u03c0\u03b5\u03b4\u03af\u03bf \u03b8\u03b1 \u03b5\u03bc\u03c6\u03b1\u03bd\u03b9\u03c3\u03c4\u03b5\u03af \u03c4\u03ac\u03c3\u03b7 \u03b5\u03be\u2019\u03b5\u03c0\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2 \u03c3\u03c4\u03b1 \u03ac\u03ba\u03c1\u03b1. &nbsp; \u03a3\u03c4\u03bf\u03c5\u03c2 \u03ba\u03b9\u03bd\u03b7\u03c4\u03ae\u03c1\u03b5\u03c2 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03cc&hellip;<\/p>\n","protected":false},"author":1,"featured_media":281,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[58,60,59],"_links":{"self":[{"href":"https:\/\/dimathanasopoulos.com\/index.php\/wp-json\/wp\/v2\/posts\/279"}],"collection":[{"href":"https:\/\/dimathanasopoulos.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dimathanasopoulos.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dimathanasopoulos.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dimathanasopoulos.com\/index.php\/wp-json\/wp\/v2\/comments?post=279"}],"version-history":[{"count":8,"href":"https:\/\/dimathanasopoulos.com\/index.php\/wp-json\/wp\/v2\/posts\/279\/revisions"}],"predecessor-version":[{"id":317,"href":"https:\/\/dimathanasopoulos.com\/index.php\/wp-json\/wp\/v2\/posts\/279\/revisions\/317"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dimathanasopoulos.com\/index.php\/wp-json\/wp\/v2\/media\/281"}],"wp:attachment":[{"href":"https:\/\/dimathanasopoulos.com\/index.php\/wp-json\/wp\/v2\/media?parent=279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dimathanasopoulos.com\/index.php\/wp-json\/wp\/v2\/categories?post=279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dimathanasopoulos.com\/index.php\/wp-json\/wp\/v2\/tags?post=279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}