{"id":1362,"date":"2021-04-19T15:25:32","date_gmt":"2021-04-19T15:25:32","guid":{"rendered":"https:\/\/www.axcontrol.com\/blog\/?p=1362"},"modified":"2021-04-30T12:49:41","modified_gmt":"2021-04-30T12:49:41","slug":"the-reliance-vfd-basics-of-variable-frequency-drives","status":"publish","type":"post","link":"https:\/\/www.axcontrol.com\/blog\/2021\/the-reliance-vfd-basics-of-variable-frequency-drives\/19\/04\/","title":{"rendered":"The Reliance VFD: Basics of Variable-Frequency Drives"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img data-attachment-id=\"1363\" data-permalink=\"https:\/\/www.axcontrol.com\/blog\/2021\/the-reliance-vfd-basics-of-variable-frequency-drives\/19\/04\/20v2160\/\" data-orig-file=\"https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/04\/20v2160.jpg\" data-orig-size=\"498,700\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"20v2160\" data-image-description=\"&lt;p&gt;Photo of Reliance Electric drive supplied by AX Control&lt;\/p&gt;\n\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/04\/20v2160-213x300.jpg\" data-large-file=\"https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/04\/20v2160.jpg\" decoding=\"async\" loading=\"lazy\" width=\"498\" height=\"700\" src=\"https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/04\/20v2160.jpg\" alt=\"Close up image of a GV3000 Reliance VFD SE Drive. \" class=\"wp-image-1363\" srcset=\"https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/04\/20v2160.jpg 498w, https:\/\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/04\/20v2160-213x300.jpg 213w\" sizes=\"(max-width: 498px) 85vw, 498px\" \/><figcaption><a href=\"https:\/\/www.axcontrol.com\/automation\/reliance-electric\/gv3000-drives\/20V2160\">20 HP Variable Frequency GV3000\/SE Drive from Reliance Electric <\/a><\/figcaption><\/figure>\n\n\n\n<p>Reliance VFD drives have been around for years.  VFDs have been widely used for industrial applications, for good reason.  Pulse-width modulation (PWM) VFDs offer low costs, high efficiency, and excellent input power factor.  <\/p>\n\n\n\n<p>However, VFDs need proper care and installation to run optimally.  Sometimes this means controlling airflow going to the drive to control heat generation.  VFDs have a typical efficiency rating between 95-98%.   But VFDs produce more heat than other electrical equipment, especially when enclosed.   And heat losses are directly related to the VFD&#8217;s efficiency rating. <\/p>\n\n\n\n<p>Make sure to note your drive&#8217;s max operating temperature under real operating conditions.  Some drives can operate to 122 degrees Fahrenheit safely.  Others can only withstand max temps of 104 degrees Fahrenheit before overheating.  To extend the life of your equipment, err on the side of caution and try to operate VFDs below their rated max operating temperature.  This will extend your equipment&#8217;s lifespan.  It will also reduce any risk of localized overheating. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Positioning is Key<\/h2>\n\n\n\n<p>One way to ensure your Reliance VFD maintains temperature is through proper positioning.   Try to place VFDs close to the bottom of electrical enclosures.  This will ensure incoming air is as cool as possible, since it hasn&#8217;t already run across other components.  Also, maintain recommended right-to-left clearances between units.  <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Are VFDs Used? <\/h2>\n\n\n\n<p>Many prefer VFDs like the Reliance VFD over single-speed drives because they can control the speed of an AC motor while offering smooth startup capabilities.    Adjustments to frequency delivered to the motor prevents straining from heavy load. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">VFD Design Saves Energy<\/h3>\n\n\n\n<p>This same frequency adjustment offers energy savings, too.   VFDs allow motors to operate at less than full speed.  A 25% reduction of motor speed can decrease energy consumption by close to 60%.  Meanwhile, a 50% reduction can decrease consumption by almost 90%. <\/p>\n\n\n\n<p>It is important to note &#8220;frequency adjustment&#8221; can also fall under the misnomer of &#8220;speed control.&#8221;   Speed control is the result of the former.   As downward adjustments in frequency occur, other improvements follow improved energy consumption.  Mechanical stress lowers, extending machine lifetime. Noise levels also reduce.  <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where are VFDs Used? <\/h2>\n\n\n\n<p>Three out of every four VFDs produced end up as part of control systems for pumps, fans, and compressors.  It is easier to control the speed of a pump through a VFD rather than try to control the flow of water or air in the system through valves.  This makes VFDs perfect for pump and fan applications. <\/p>\n\n\n\n<p class=\"has-text-align-center\">Need <a href=\"https:\/\/www.axcontrol.com\/automation\/reliance-electric\/gv3000-drives\">replacement parts for your Reliance VFD?<\/a>  We can help! Talk to our team today. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Reliance VFD drives have been around for years. VFDs have been widely used for industrial applications, for good reason. Pulse-width modulation (PWM) VFDs offer low costs, high efficiency, and excellent input power factor. However, VFDs need proper care and installation to run optimally. Sometimes this means controlling airflow going to the drive to control heat &hellip; <a href=\"https:\/\/www.axcontrol.com\/blog\/2021\/the-reliance-vfd-basics-of-variable-frequency-drives\/19\/04\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;The Reliance VFD: Basics of Variable-Frequency Drives&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false},"categories":[10],"tags":[246,337,295],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The Reliance VFD: Basics of Variable-Frequency Drives - AX Control, Inc.<\/title>\n<meta name=\"description\" content=\"VFDs like the Reliance VFD have been widely used for industrial applications, for good reason. We dig into how, where, and why they work.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.axcontrol.com\/blog\/2021\/the-reliance-vfd-basics-of-variable-frequency-drives\/19\/04\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Reliance VFD: Basics of Variable-Frequency Drives - AX Control, Inc.\" \/>\n<meta property=\"og:description\" content=\"VFDs like the Reliance VFD have been widely used for industrial applications, for good reason. 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There are several things to consider when sourcing a drive to use with a motor.\u00a0 These include Function.\u00a0 What will the components be doing?\u00a0 Make sure to choose drives and motors\u2026","rel":"","context":"In &quot;Education&quot;","img":{"alt_text":"15v4150-ac-drive","src":"https:\/\/i0.wp.com\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/03\/15v4150-ac-drive.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":2457,"url":"https:\/\/www.axcontrol.com\/blog\/2021\/motor-rpm-how-to-calculate\/10\/11\/","url_meta":{"origin":1362,"position":3},"title":"Motor RPM: How to Calculate","date":"November 10, 2021","format":false,"excerpt":"Reliance Electric Servo Motor Knowing how to calculate motor RPM can be invaluable when choosing a motor for your industrial application. Along with torque, voltage, and power, this measurement will help you understand how to find the correct motor for your needs. Electric motors have three main parts: the stator,\u2026","rel":"","context":"In &quot;AI and Machine Learning&quot;","img":{"alt_text":"2016-08-17-10.44.32","src":"https:\/\/i0.wp.com\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/11\/2016-08-17-10.44.32.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":2538,"url":"https:\/\/www.axcontrol.com\/blog\/2022\/the-difference-between-dc-ac-drives-in-automation\/09\/11\/","url_meta":{"origin":1362,"position":4},"title":"The Difference Between DC &#038; AC Drives in Automation","date":"November 9, 2022","format":false,"excerpt":"You can\u2019t have success in the automation industry without DC or AC drives. Learn more about each type of drive and what makes them different in this guide.","rel":"","context":"In &quot;Automation&quot;","img":{"alt_text":"The Difference Between DC & AC Drives in Automation","src":"https:\/\/i0.wp.com\/www.axcontrol.com\/blog\/wp-content\/uploads\/2022\/11\/PNx4zZKl6ddgksvgsADBvmDMx8AKePgL1667421150.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1454,"url":"https:\/\/www.axcontrol.com\/blog\/2021\/servo-drive-features-you-should-know-about\/18\/06\/","url_meta":{"origin":1362,"position":5},"title":"Servo Drive Features You Should Know About","date":"June 18, 2021","format":false,"excerpt":"The Reliance Electric Vectrive ACDA-33 Servo Drive The servo drive of today is not the same as the basic power amplifier of yesterday.\u00a0 These complex equipment devices have dozens of available features that expand and improve their original motion control abilities. \u00a0 We don\u2019t want you to miss out on\u2026","rel":"","context":"In &quot;Automation&quot;","img":{"alt_text":"Vectrive-ACDA-Servo-Drive","src":"https:\/\/i0.wp.com\/www.axcontrol.com\/blog\/wp-content\/uploads\/2021\/06\/Vectrive-ACDA-Servo-Drive.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.axcontrol.com\/blog\/wp-json\/wp\/v2\/posts\/1362"}],"collection":[{"href":"https:\/\/www.axcontrol.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.axcontrol.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.axcontrol.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.axcontrol.com\/blog\/wp-json\/wp\/v2\/comments?post=1362"}],"version-history":[{"count":1,"href":"https:\/\/www.axcontrol.com\/blog\/wp-json\/wp\/v2\/posts\/1362\/revisions"}],"predecessor-version":[{"id":1364,"href":"https:\/\/www.axcontrol.com\/blog\/wp-json\/wp\/v2\/posts\/1362\/revisions\/1364"}],"wp:attachment":[{"href":"https:\/\/www.axcontrol.com\/blog\/wp-json\/wp\/v2\/media?parent=1362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.axcontrol.com\/blog\/wp-json\/wp\/v2\/categories?post=1362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.axcontrol.com\/blog\/wp-json\/wp\/v2\/tags?post=1362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}