{"id":4679,"date":"2020-09-25T15:36:44","date_gmt":"2020-09-25T21:36:44","guid":{"rendered":"https:\/\/ddmgaragedoors.com\/blog\/?p=4679"},"modified":"2023-07-26T10:08:03","modified_gmt":"2023-07-26T16:08:03","slug":"liftmaster-logic-5-voltages","status":"publish","type":"post","link":"https:\/\/ddmgaragedoors.com\/blog\/2020\/09\/25\/liftmaster-logic-5-voltages\/","title":{"rendered":"LiftMaster Logic 5 Voltages"},"content":{"rendered":"\n<p>In most <a href=\"https:\/\/ddmgaragedoors.com\/parts\/liftmaster-commercial-operators.html\">commercial operators<\/a> sold in the last century, there were two voltages: the incoming line voltage, and the lower secondary voltage from the transformer. This was usually 24-28 volts with alternating current. On rainy days in my early years, this lower voltage would often produce a noticeable shock.<\/p>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"LiftMaster Logic 5 Voltages\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/XRrexto2w5A?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>The LiftMaster Logic 5 Voltages are different. The operators not only have the incoming line voltage and the 24-28 volt secondary, but there is an even lower voltage to power the eyes and operate the control station. This is usually around five volts, with direct current rather than the alternating current coming from the secondary of the transformer.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/Checking-the-incoming-line-voltage.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/Checking-the-incoming-line-voltage.png\" alt=\"Checking the incoming voltage on a LiftMaster Operator\" class=\"wp-image-5133\" width=\"280\" height=\"362\" srcset=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/Checking-the-incoming-line-voltage.png 534w, https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/Checking-the-incoming-line-voltage-232x300.png 232w\" sizes=\"auto, (max-width: 280px) 100vw, 280px\" \/><\/a><figcaption class=\"wp-element-caption\">Checking the incoming voltage on a LiftMaster Logic 5 Operator<\/figcaption><\/figure>\n\n\n\n<p>You can check the incoming line voltage at the top right corner of the operator. This can be either 110 volts or 220 volts. See our <a href=\"https:\/\/ddmgaragedoors.com\/blog\/2020\/09\/18\/setting-voltages-on-single-phase-liftmaster-operators\/\">previous post<\/a> for how to make sure the operator voltage matches the voltage coming in.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/Liftmaster-Logic-Board-Power-Input.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/Liftmaster-Logic-Board-Power-Input.jpg\" alt=\"LiftMaster logic board power intake\" class=\"wp-image-5134\" width=\"329\" height=\"323\" srcset=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/Liftmaster-Logic-Board-Power-Input.jpg 550w, https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/Liftmaster-Logic-Board-Power-Input-300x295.jpg 300w\" sizes=\"auto, (max-width: 329px) 100vw, 329px\" \/><\/a><figcaption class=\"wp-element-caption\">LiftMaster Logic Board Power Intake<\/figcaption><\/figure>\n\n\n\n<p>The 24-28 volt secondary powers the logic board. This voltage feeds into the logic board directly from the transformer. It can be checked at the top right corner of the board.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/LiftMaster-Logic-5-low-voltage-output.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/LiftMaster-Logic-5-low-voltage-output.jpg\" alt=\"The open, close, and stop signals use a 5-volt DC current\" class=\"wp-image-5135\" width=\"333\" height=\"372\" srcset=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/LiftMaster-Logic-5-low-voltage-output.jpg 389w, https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/LiftMaster-Logic-5-low-voltage-output-268x300.jpg 268w\" sizes=\"auto, (max-width: 333px) 100vw, 333px\" \/><\/a><figcaption class=\"wp-element-caption\">These three wires use a 5-volt DC current to tell the garage door to open, close, or stop, respectively.<\/figcaption><\/figure>\n\n\n\n<p>The incoming line voltage and 24-28 volt secondary are both AC, or alternating current. However, the five-volt current put out by the logic board is direct current.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/11\/image.png\"><img loading=\"lazy\" decoding=\"async\" width=\"694\" height=\"386\" src=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/11\/image.png\" alt=\"Voltage diagram: 110 or 220 volts AC feed into a transformer, which sends 24 volts AC to the Logic Board. The Logic Board sends out 5 volts DC\" class=\"wp-image-5155\" srcset=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/11\/image.png 694w, https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/11\/image-300x167.png 300w\" sizes=\"auto, (max-width: 694px) 100vw, 694px\" \/><\/a><figcaption class=\"wp-element-caption\">This diagram shows the three different operator voltages<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>In most commercial operators sold in the last century, there were two voltages: the incoming line voltage, and the lower secondary voltage from the transformer. This was usually 24-28 volts with alternating current. On rainy days in my early years, this lower voltage would often produce a noticeable shock. The LiftMaster Logic 5 Voltages are [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5028],"tags":[4043,3986,4648,4643],"class_list":["post-4679","post","type-post","status-publish","format-standard","hentry","category-how-garage-doors-work","tag-commercial-operators","tag-liftmaster","tag-logic-5-control-board","tag-operator-voltage"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v25.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>LiftMaster Logic 5 Voltages - DDM Garage Doors Blog<\/title>\n<meta name=\"description\" content=\"The LiftMaster Logic 5 operator has different voltages than most commercial operators sold in the last century with two voltages.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ddmgaragedoors.com\/blog\/2020\/09\/25\/liftmaster-logic-5-voltages\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LiftMaster Logic 5 Voltages\" \/>\n<meta property=\"og:description\" content=\"The LiftMaster Logic 5 operator has different voltages than most commercial operators sold in the last century with two voltages.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ddmgaragedoors.com\/blog\/2020\/09\/25\/liftmaster-logic-5-voltages\/\" \/>\n<meta property=\"og:site_name\" content=\"DDM Garage Doors Blog\" \/>\n<meta property=\"article:published_time\" content=\"2020-09-25T21:36:44+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-07-26T16:08:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ddmgaragedoors.com\/blog\/uploads\/2022\/10\/Checking-the-incoming-line-voltage.png\" \/>\n<meta name=\"author\" content=\"Dan Musick\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dan Musick\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/ddmgaragedoors.com\/blog\/2020\/09\/25\/liftmaster-logic-5-voltages\/\",\"url\":\"https:\/\/ddmgaragedoors.com\/blog\/2020\/09\/25\/liftmaster-logic-5-voltages\/\",\"name\":\"LiftMaster Logic 5 Voltages - 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