{"id":227,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/runup\/"},"modified":"2026-05-23T22:53:44","modified_gmt":"2026-05-23T22:53:44","slug":"runup","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/kn\/glossary\/runup\/","title":{"rendered":"What is Runup in Rotating Machinery Analysis?"},"content":{"rendered":"<h1>\u0cad\u0ccd\u0cb0\u0cae\u0ca3 \u0caf\u0c82\u0ca4\u0ccd\u0cb0\u0c97\u0cb3 \u0cb5\u0cbf\u0cb6\u0ccd\u0cb2\u0cc7\u0cb7\u0ca3\u0ca6\u0cb2\u0ccd\u0cb2\u0cbf \u0cb0\u0ca8\u0ccd\u200c\u0c85\u0caa\u0ccd \u0c85\u0ca8\u0ccd\u0ca8\u0cc1 \u0c85\u0cb0\u0ccd\u0ca5\u0cae\u0cbe\u0ca1\u0cbf\u0c95\u0cca\u0cb3\u0ccd\u0cb3\u0cc1\u0cb5\u0cc1\u0ca6\u0cc1<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/balanset-1\/\" title=\"\u0caa\u0ccb\u0cb0\u0ccd\u0c9f\u0cac\u0cb2\u0ccd \u0cac\u0ccd\u0caf\u0cbe\u0cb2\u0cc6\u0ca8\u0ccd\u0cb8\u0cb0\u0ccd \u0cae\u0ca4\u0ccd\u0ca4\u0cc1 \u0c95\u0c82\u0caa\u0ca8 \u0cb5\u0cbf\u0cb6\u0ccd\u0cb2\u0cc7\u0cb7\u0c95 \u0cac\u0ccd\u0caf\u0cbe\u0cb2\u0cc6\u0ca8\u0ccd\u0cb8\u0cc6\u0c9f\u0ccd-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A \u0cb8\u0c82\u0caa\u0cc2\u0cb0\u0ccd\u0ca3 \u0cb8\u0cc6\u0c9f\u0ccd \u0caa\u0ccb\u0cb0\u0ccd\u0c9f\u0cc7\u0cac\u0cb2\u0ccd \u0cb8\u0cae\u0ca4\u0ccb\u0cb2\u0ca8\u0c95\u0cbe\u0cb0 \u0cae\u0ca4\u0ccd\u0ca4\u0cc1 \u0c95\u0c82\u0caa\u0ca8 \u0cb5\u0cbf\u0cb6\u0ccd\u0cb2\u0cc7\u0cb7\u0c95\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/kn\/product-category\/devices\/\" rel=\"tag\">\u0cb8\u0cbe\u0ca7\u0ca8\u0c97\u0cb3\u0cc1<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/kn\/product\/balanset-1\/\" title=\"\u0caa\u0ccb\u0cb0\u0ccd\u0c9f\u0cac\u0cb2\u0ccd \u0cac\u0ccd\u0caf\u0cbe\u0cb2\u0cc6\u0ca8\u0ccd\u0cb8\u0cb0\u0ccd \u0cae\u0ca4\u0ccd\u0ca4\u0cc1 \u0c95\u0c82\u0caa\u0ca8 \u0cb5\u0cbf\u0cb6\u0ccd\u0cb2\u0cc7\u0cb7\u0c95 \u0cac\u0ccd\u0caf\u0cbe\u0cb2\u0cc6\u0ca8\u0ccd\u0cb8\u0cc6\u0c9f\u0ccd-1A\">\u0caa\u0ccb\u0cb0\u0ccd\u0c9f\u0cac\u0cb2\u0ccd \u0cac\u0ccd\u0caf\u0cbe\u0cb2\u0cc6\u0ca8\u0ccd\u0cb8\u0cb0\u0ccd \u0cae\u0ca4\u0ccd\u0ca4\u0cc1 \u0c95\u0c82\u0caa\u0ca8 \u0cb5\u0cbf\u0cb6\u0ccd\u0cb2\u0cc7\u0cb7\u0c95 \u0cac\u0ccd\u0caf\u0cbe\u0cb2\u0cc6\u0ca8\u0ccd\u0cb8\u0cc6\u0c9f\u0ccd-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span 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product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Add to cart: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/vibration-sensor\/\" title=\"\u0c95\u0c82\u0caa\u0ca8 \u0cb8\u0c82\u0cb5\u0cc7\u0ca6\u0c95\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A \u0c95\u0c82\u0caa\u0ca8 \u0cb8\u0cc6\u0ca8\u0ccd\u0cb8\u0cb0\u0ccd \u0cac\u0cb3\u0cbf\u0c95\u0cbf\u0c9f\u0ccd\u0c9f\u0cc1 \u0c9a\u0cbf\u0ca4\u0ccd\u0cb0\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/kn\/product-category\/parts\/\" rel=\"tag\">\u0cad\u0cbe\u0c97\u0c97\u0cb3\u0cc1<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/kn\/product\/vibration-sensor\/\" title=\"\u0c95\u0c82\u0caa\u0ca8 \u0cb8\u0c82\u0cb5\u0cc7\u0ca6\u0c95\">\u0c95\u0c82\u0caa\u0ca8 \u0cb8\u0c82\u0cb5\u0cc7\u0ca6\u0c95<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span 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\u0cb8\u0cc6\u0ca8\u0ccd\u0cb8\u0cb0\u0ccd (\u0cb2\u0cc7\u0cb8\u0cb0\u0ccd \u0c9f\u0ccd\u0caf\u0cbe\u0c95\u0ccb\u0cae\u0cc0\u0c9f\u0cb0\u0ccd)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u0c86\u0caa\u0ccd\u0c9f\u0cbf\u0c95\u0cb2\u0ccd \u0cb8\u0cc6\u0ca8\u0ccd\u0cb8\u0cb0\u0ccd (\u0cb2\u0cc7\u0cb8\u0cb0\u0ccd \u0c9f\u0ccd\u0caf\u0cbe\u0c95\u0ccb\u0cae\u0cc0\u0c9f\u0cb0\u0ccd)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/kn\/product-category\/parts\/\" rel=\"tag\">\u0cad\u0cbe\u0c97\u0c97\u0cb3\u0cc1<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 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rel=\"nofollow\" href=\"\/kn\/wp-json\/wp\/v2\/glossary\/227?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/kn\/wp-json\/wp\/v2\/glossary\/227?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Add to cart: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/balanset-4\/\" title=\"\u0cac\u0ccd\u0caf\u0cbe\u0cb2\u0cc6\u0ca8\u0ccd\u0cb8\u0cc6\u0c9f\u0ccd-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Vibromera \u0cb0\u0ccb\u0c9f\u0cb0\u0ccd \u0cb8\u0cae\u0ca4\u0ccb\u0cb2\u0ca8 \u0c95\u0cbf\u0c9f\u0ccd: \u0cb8\u0cbe\u0c97\u0cbf\u0cb8\u0cc1\u0cb5 \u0caa\u0cc6\u0c9f\u0ccd\u0c9f\u0cbf\u0c97\u0cc6, \u0cac\u0cb9\u0cc1-\u0c9a\u0cbe\u0ca8\u0cc6\u0cb2\u0ccd \u0cb8\u0cbf\u0c97\u0ccd\u0ca8\u0cb2\u0ccd \u0c95\u0c82\u0ca1\u0cbf\u0cb7\u0ca8\u0cb0\u0ccd, \u0cb9\u0ccb\u0cb2\u0ccd\u0ca1\u0ccd \u0c86\u0ca8\u0cbe\u0cb2\u0cc8\u099c\u0cb0\u0ccd, \u0cae\u0ccd\u0caf\u0cbe\u0c97\u0ccd\u0ca8\u0cc6\u0c9f\u0cbf\u0c95\u0ccd \u0cac\u0cc7\u0cb8\u0ccd, \u0c95\u0c82\u0caa\u0ca8 \u0cb8\u0cc6\u0ca8\u0ccd\u0cb8\u0cb0\u0ccd\u200d\u0cb3\u0cc1 \u0cae\u0ca4\u0ccd\u0ca4\u0cc1 \u0cb8\u0cc1\u0cb0\u0cc1\u0cb3\u0cbf\u0caf\u0cbe\u0c95\u0cbe\u0cb0\u0ca6 \u0c95\u0cc7\u0cac\u0cb2\u0ccd\u200d\u0cb3\u0cc1.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/kn\/product-category\/devices\/\" rel=\"tag\">\u0cb8\u0cbe\u0ca7\u0ca8\u0c97\u0cb3\u0cc1<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/kn\/product\/balanset-4\/\" title=\"\u0cac\u0ccd\u0caf\u0cbe\u0cb2\u0cc6\u0ca8\u0ccd\u0cb8\u0cc6\u0c9f\u0ccd-4\">\u0cac\u0ccd\u0caf\u0cbe\u0cb2\u0cc6\u0ca8\u0ccd\u0cb8\u0cc6\u0c9f\u0ccd-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + VAT (\u0c85\u0ca8\u0ccd\u0cb5\u0caf\u0cb5\u0cbe\u0ca6\u0cb0\u0cc6)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/kn\/wp-json\/wp\/v2\/glossary\/227?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/kn\/wp-json\/wp\/v2\/glossary\/227?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Add to cart: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/magnet-stand\/\" title=\"\u0cae\u0ccd\u0caf\u0cbe\u0c97\u0ccd\u0ca8\u0cc6\u0c9f\u0cbf\u0c95\u0ccd \u0cb8\u0ccd\u0c9f\u0ccd\u0caf\u0cbe\u0c82\u0ca1\u0ccd \u0c97\u0cbe\u0ca4\u0ccd\u0cb0-60-\u0c95\u0cc6\u0c9c\u0cbf\u0c8e\u0cab\u0ccd\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u0cae\u0ccd\u0caf\u0cbe\u0c97\u0ccd\u0ca8\u0cc6\u0c9f\u0ccd \u0cac\u0cc7\u0cb8\u0ccd.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/kn\/product-category\/parts\/\" rel=\"tag\">\u0cad\u0cbe\u0c97\u0c97\u0cb3\u0cc1<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/kn\/product\/magnet-stand\/\" title=\"\u0cae\u0ccd\u0caf\u0cbe\u0c97\u0ccd\u0ca8\u0cc6\u0c9f\u0cbf\u0c95\u0ccd \u0cb8\u0ccd\u0c9f\u0ccd\u0caf\u0cbe\u0c82\u0ca1\u0ccd \u0c97\u0cbe\u0ca4\u0ccd\u0cb0-60-\u0c95\u0cc6\u0c9c\u0cbf\u0c8e\u0cab\u0ccd\">\u0cae\u0ccd\u0caf\u0cbe\u0c97\u0ccd\u0ca8\u0cc6\u0c9f\u0cbf\u0c95\u0ccd \u0cb8\u0ccd\u0c9f\u0ccd\u0caf\u0cbe\u0c82\u0ca1\u0ccd \u0c97\u0cbe\u0ca4\u0ccd\u0cb0-60-\u0c95\u0cc6\u0c9c\u0cbf\u0c8e\u0cab\u0ccd<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + VAT (\u0c85\u0ca8\u0ccd\u0cb5\u0caf\u0cb5\u0cbe\u0ca6\u0cb0\u0cc6)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/kn\/wp-json\/wp\/v2\/glossary\/227?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/kn\/wp-json\/wp\/v2\/glossary\/227?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Add to cart: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/reflective-tape\/\" title=\"\u0caa\u0ccd\u0cb0\u0ca4\u0cbf\u0cab\u0cb2\u0cbf\u0ca4 \u0c9f\u0cc7\u0caa\u0ccd\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\u0caa\u0ccd\u0cb0\u0ca4\u0cbf\u0cab\u0cb2\u0cbf\u0ca4 \u0c9f\u0cc7\u0caa\u0ccd\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/kn\/product-category\/parts\/\" rel=\"tag\">\u0cad\u0cbe\u0c97\u0c97\u0cb3\u0cc1<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/kn\/product\/reflective-tape\/\" title=\"\u0caa\u0ccd\u0cb0\u0ca4\u0cbf\u0cab\u0cb2\u0cbf\u0ca4 \u0c9f\u0cc7\u0caa\u0ccd\">\u0caa\u0ccd\u0cb0\u0ca4\u0cbf\u0cab\u0cb2\u0cbf\u0ca4 \u0c9f\u0cc7\u0caa\u0ccd<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + VAT (\u0c85\u0ca8\u0ccd\u0cb5\u0caf\u0cb5\u0cbe\u0ca6\u0cb0\u0cc6)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/kn\/wp-json\/wp\/v2\/glossary\/227?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/kn\/wp-json\/wp\/v2\/glossary\/227?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Add to cart: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/kn\/product\/dynamic-balancer-balanset-1a\/\" title=\"\u0ca1\u0cc8\u0ca8\u0cbe\u0cae\u0cbf\u0c95\u0ccd \u0cac\u0ccd\u0caf\u0cbe\u0cb2\u0cc6\u0ca8\u0ccd\u0cb8\u0cb0\u0ccd &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A \u0c95\u0cbf\u0c9f\u0ccd \u0cb8\u0cbe\u0cae\u0c97\u0ccd\u0cb0\u0cbf \u0c87\u0c82\u0c9f\u0cb0\u0ccd\u200c\u0cab\u0cc7\u0cb8\u0ccd \u0caf\u0cc2\u0ca8\u0cbf\u0c9f\u0ccd, 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class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/kn\/wp-json\/wp\/v2\/glossary\/227?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Add to cart\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Add to cart\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/kn\/wp-json\/wp\/v2\/glossary\/227?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Add to cart: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d has been added to your cart\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Add to cart<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>\u0cb0\u0ca8\u0ccd\u200c\u0c85\u0caa\u0ccd<\/strong> \u2014 also called a startup or acceleration test \u2014 is the process of accelerating a rotating machine from rest (or from a low speed) up to its normal operating speed while continuously recording <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/vibration\/\">vibration<\/a> and other parameters. Within <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/rotor-dynamics\/\">rotor dynamics<\/a>, a runup is a diagnostic procedure that captures how the machine behaves throughout the acceleration, yielding direct empirical evidence of its <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/critical-speed\/\">\u0ca8\u0cbf\u0cb0\u0ccd\u0ca3\u0cbe\u0caf\u0c95 \u0cb5\u0cc7\u0c97<\/a>, \u0c85\u0ca6\u0cb0 <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/resonance\/\">resonance<\/a> characteristics, and the way it negotiates the startup transient. Because it can be folded into a routine start, runup testing is one of the most convenient ways to assess rotor dynamic health periodically \u2014 it complements <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/coastdown\/\">\u0c95\u0ccb\u0cb8\u0ccd\u0c9f\u0ccd\u200c\u0ca1\u0ccc\u0ca8\u0ccd \u0caa\u0cb0\u0cc0\u0c95\u0ccd\u0cb7\u0cc6<\/a> without demanding any special shutdown.<\/p>\n<h2>1. Purpose and Applications<\/h2>\n<h3>Critical-Speed Verification<\/h3>\n<p>The primary objective of a runup is to find and characterise the machine&#8217;s critical speeds:<\/p>\n<ul>\n<li>Vibration amplitude rises to a peak as the machine accelerates through each critical speed.<\/li>\n<li>The height of that peak reflects the available <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/damping\/\">damping<\/a> and the severity of the resonance.<\/li>\n<li>A characteristic 180\u00b0 <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/phase\/\">phase<\/a> shift through the peak confirms it is a genuine resonance rather than a coincidental forcing.<\/li>\n<li>The test identifies every critical speed between zero and operating speed, in the order the machine meets them.<\/li>\n<\/ul>\n<h3>Startup-Procedure Validation<\/h3>\n<p>A runup confirms that the written startup procedure is actually appropriate:<\/p>\n<ul>\n<li>The acceleration rate is fast enough to pass through critical speeds without dwelling.<\/li>\n<li>Vibration amplitudes stay within safe limits throughout.<\/li>\n<li>Thermal-growth effects during warm-up are accounted for.<\/li>\n<li>Any speed-hold periods are correctly positioned away from critical speeds.<\/li>\n<\/ul>\n<h3>Commissioning and Acceptance Testing<\/h3>\n<ul>\n<li>Verifying behaviour on a new machine&#8217;s first start.<\/li>\n<li>Demonstrating that design specifications are met.<\/li>\n<li>Establishing <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/baseline\/\">baseline<\/a> data for future comparison.<\/li>\n<li>Validating the rotor dynamic model and its predictions against reality.<\/li>\n<\/ul>\n<h3>\u0c86\u0cb5\u0cb0\u0ccd\u0ca4\u0c95 \u0c86\u0cb0\u0ccb\u0c97\u0ccd\u0caf \u0cae\u0ccc\u0cb2\u0ccd\u0caf\u0cae\u0cbe\u0caa\u0ca8<\/h3>\n<ul>\n<li>Comparing the current runup against historical baselines.<\/li>\n<li>Detecting shifts in critical-speed location, which betray mechanical change such as a developing crack or altered support stiffness.<\/li>\n<li>Spotting growth in the amplitude at a critical speed, which signals reduced damping or rising unbalance.<\/li>\n<li>Giving early warning of problems while they are still developing.<\/li>\n<\/ul>\n<h2>2. Runup Test Procedure<\/h2>\n<h3>\u0caa\u0cb0\u0cc0\u0c95\u0ccd\u0cb7\u0cc6\u0c97\u0cc6 \u0cae\u0cc1\u0ca8\u0ccd\u0ca8\u0ca6 \u0cb8\u0cbf\u0ca6\u0ccd\u0ca7\u0ca4\u0cc6<\/h3>\n<ol>\n<li><strong>Sensor installation:<\/strong> \u0c85\u0cb3\u0cb5\u0ca1\u0cbf\u0cb8\u0cbf <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/accelerometer\/\">accelerometers<\/a> or velocity transducers at each bearing, in both horizontal and vertical directions.<\/li>\n<li><strong>\u0caa\u0cbe\u0cb8\u0ccd \u0c89\u0cb2\u0ccd\u0cb2\u0cc7\u0c96:<\/strong> fit a <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/tachometer\/\">tachometer<\/a> \u0c85\u0ca5\u0cb5\u0cbe <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/keyphasor\/\">keyphasor<\/a> to provide both speed and the phase reference.<\/li>\n<li><strong>Data-acquisition system:<\/strong> configure it for continuous high-speed recording across the whole startup, not periodic snapshots.<\/li>\n<li><strong>Safety systems:<\/strong> verify that all protection is functional and set the vibration <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/trip-level\/\">\u0c9f\u0ccd\u0cb0\u0cbf\u0caa\u0ccd \u0cae\u0c9f\u0ccd\u0c9f\u0c97\u0cb3\u0cc1<\/a> before turning a wheel.<\/li>\n<\/ol>\n<h3>\u0caa\u0cb0\u0cc0\u0c95\u0ccd\u0cb7\u0cc6\u0caf \u0ca8\u0cbf\u0cb0\u0ccd\u0cb5\u0cb9\u0ca3\u0cc6<\/h3>\n<ol>\n<li><strong>\u0caa\u0ccd\u0cb0\u0cbe\u0cb0\u0c82\u0cad\u0cbf\u0c95 \u0cb8\u0ccd\u0ca5\u0cbf\u0ca4\u0cbf:<\/strong> machine at rest, all systems ready.<\/li>\n<li><strong>Start recording<\/strong> before the drive is energised, so the very beginning of the transient is captured.<\/li>\n<li><strong>Initiate startup<\/strong> following the normal or a deliberately modified procedure.<\/li>\n<li><strong>Controlled acceleration:<\/strong> accelerate through the critical speeds at the defined rate.<\/li>\n<li><strong>Monitor continuously,<\/strong> watching vibration in real time for safety.<\/li>\n<li><strong>Reach operating speed,<\/strong> continuing to normal operating conditions.<\/li>\n<li><strong>Stabilise:<\/strong> allow thermal and mechanical equilibration.<\/li>\n<li><strong>Stop recording<\/strong> only after the complete transient plus a period of steady-state running is captured.<\/li>\n<\/ol>\n<h3>Acceleration-Rate Considerations<\/h3>\n<ul>\n<li><strong>Too fast:<\/strong> too few data points are gathered at each speed, and a sharp critical speed may be skipped over unrecorded.<\/li>\n<li><strong>Too slow:<\/strong> the rotor dwells too long in a resonance, risking damage, and thermal conditions drift during the test.<\/li>\n<li><strong>Typical rate:<\/strong> 100\u2013500 rpm per minute suits most industrial equipment.<\/li>\n<li><strong>Critical-speed zones:<\/strong> the machine may be accelerated faster through known critical speeds to minimise the time spent at high amplitude.<\/li>\n<\/ul>\n<p>For drives where the acceleration rate is governed by motor torque and rotor inertia rather than freely chosen, a <a href=\"https:\/\/vibromera.eu\/kn\/calculators\/rotor-acceleration-time\/\">rotor acceleration-time calculator<\/a> estimates how long the machine will take to spin up, which helps confirm that critical speeds will be traversed quickly enough.<\/p>\n<h2>3. Data-Analysis Methods<\/h2>\n<h3>\u0cac\u0ccb\u0ca1\u0ccd \u0caa\u0ccd\u0cb2\u0cbe\u0c9f\u0ccd \u0cb5\u0cbf\u0cb6\u0ccd\u0cb2\u0cc7\u0cb7\u0ca3\u0cc6<\/h3>\n<p>The standard presentation for a runup:<\/p>\n<ul>\n<li>\u0c95\u0c82\u0caa\u0ca8\u0cb5\u0ca8\u0ccd\u0ca8\u0cc1 \u0caa\u0ccd\u0cb2\u0cbe\u0c9f\u0ccd \u0cae\u0cbe\u0ca1\u0cbf <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/amplitude\/\">amplitude<\/a> against speed on the upper trace.<\/li>\n<li>Plot phase angle against speed on the lower trace.<\/li>\n<li>Critical speeds appear as amplitude peaks accompanied by phase transitions \u2014 the paired signature that distinguishes a true resonance.<\/li>\n<li>Compare the result against acceptance criteria and the design predictions.<\/li>\n<\/ul>\n<p>\u0ca6\u0cbf <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/bode-plot\/\">\u0cac\u0ccb\u0ca1\u0ccd \u0caa\u0ccd\u0cb2\u0cbe\u0c9f\u0ccd<\/a> is the workhorse here precisely because it shows amplitude and phase together, the two quantities that together confirm a resonance.<\/p>\n<h3>\u0c9c\u0cb2\u0caa\u0ccd\u0cb0\u0caa\u0cbe\u0ca4 \/ \u0c95\u0ccd\u0caf\u0cbe\u0cb8\u0ccd\u0c95\u0cc7\u0ca1\u0ccd \u0caa\u0ccd\u0cb2\u0cbe\u0c9f\u0ccd<\/h3>\n<ul>\n<li>A <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/waterfall-plot\/\">\u0cb5\u0cbe\u0c9f\u0cb0\u0ccd\u0cab\u0cbe\u0cb2\u0ccd \u0caa\u0ccd\u0cb2\u0cbe\u0c9f\u0ccd<\/a> stacks the <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/spectrum\/\">\u0c86\u0cb5\u0cc3\u0ca4\u0ccd\u0ca4\u0cbf \u0cb8\u0ccd\u0caa\u0cc6\u0c95\u0ccd\u0c9f\u0ccd\u0cb0\u0cae\u0ccd<\/a> at successive speeds into a three-dimensional map of how the spectrum evolves with speed.<\/li>\n<li>It shows the 1\u00d7 synchronous component tracking diagonally with speed.<\/li>\n<li>Fixed natural-frequency resonances appear as vertical features that do not move with speed.<\/li>\n<li>It is excellent for spotting sub-synchronous or super-synchronous components that a single spectrum would hide.<\/li>\n<\/ul>\n<h3>\u0c86\u0cb0\u0ccd\u0ca1\u0cb0\u0ccd \u0c9f\u0ccd\u0cb0\u0ccd\u0caf\u0cbe\u0c95\u0cbf\u0c82\u0c97\u0ccd<\/h3>\n<ul>\n<li><a href=\"https:\/\/vibromera.eu\/kn\/glossary\/order-analysis\/\">\u0c86\u0cb0\u0ccd\u0ca1\u0cb0\u0ccd \u0cb5\u0cbf\u0cb6\u0ccd\u0cb2\u0cc7\u0cb7\u0ca3\u0cc6<\/a> expresses vibration in orders \u2014 multiples of running speed \u2014 instead of absolute frequency.<\/li>\n<li>The 1\u00d7 component stays on the same order line throughout the runup, isolating speed-related forcing.<\/li>\n<li>Fixed natural frequencies, by contrast, cross the order lines as speed changes.<\/li>\n<li>This view is particularly powerful on variable-speed equipment.<\/li>\n<\/ul>\n<h2>4. Comparison: Runup versus Coastdown<\/h2>\n<p>The mirror-image of a runup is a <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/coastdown\/\">\u0c95\u0ccb\u0cb8\u0ccd\u0c9f\u0ccd\u200c\u0ca1\u0ccc\u0ca8\u0ccd<\/a>, in which the de-energised machine slows under its own friction and windage. The two reveal the same critical speeds but under opposite conditions:<\/p>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>\u0c85\u0c82\u0cb6<\/th>\n<th>\u0cb0\u0ca8\u0ccd\u200c\u0c85\u0caa\u0ccd<\/th>\n<th>\u0c95\u0ccb\u0cb8\u0ccd\u0c9f\u0ccd\u200c\u0ca1\u0ccc\u0ca8\u0ccd<\/th>\n<\/tr>\n<tr>\n<td>\u0ca6\u0cbf\u0c95\u0ccd\u0c95\u0cc1<\/td>\n<td>\u0cb5\u0cc7\u0c97\u0cb5\u0ca8\u0ccd\u0ca8\u0cc1 \u0cb9\u0cc6\u0c9a\u0ccd\u0c9a\u0cbf\u0cb8\u0cc1\u0cb5\u0cc1\u0ca6\u0cc1<\/td>\n<td>\u0cb5\u0cc7\u0c97\u0cb5\u0ca8\u0ccd\u0ca8\u0cc1 \u0c95\u0ca1\u0cbf\u0cae\u0cc6\u0cbf\u0cb8\u0cc1\u0cb5\u0cc1\u0ca6\u0cc1<\/td>\n<\/tr>\n<tr>\n<td>Energy state<\/td>\n<td>\u0cb6\u0c95\u0ccd\u0ca4\u0cbf\u0caf\u0ca8\u0ccd\u0ca8\u0cc1 \u0cb8\u0cc7\u0cb0\u0cbf\u0cb8\u0cc1\u0cb5\u0cc1\u0ca6\u0cc1<\/td>\n<td>\u0cb6\u0c95\u0ccd\u0ca4\u0cbf\u0caf\u0ca8\u0ccd\u0ca8\u0cc1 \u0cb5\u0cbf\u0cb8\u0cb0\u0ccd\u0c9c\u0cbf\u0cb8\u0cc1\u0cb5\u0cc1\u0ca6\u0cc1<\/td>\n<\/tr>\n<tr>\n<td>\u0ca4\u0cbe\u0caa\u0cae\u0cbe\u0ca8<\/td>\n<td>\u0ca4\u0ca3\u0ccd\u0ca3\u0c97\u0cbf\u0ca8\u0cbf\u0c82\u0ca6 \u0cac\u0cbf\u0cb8\u0cbf\u0c97\u0cc6<\/td>\n<td>\u0cac\u0cbf\u0cb8\u0cbf\u0caf\u0cbf\u0c82\u0ca6 \u0ca4\u0ca3\u0ccd\u0ca3\u0c97\u0cc6<\/td>\n<\/tr>\n<tr>\n<td>\u0ca8\u0cbf\u0caf\u0c82\u0ca4\u0ccd\u0cb0\u0ca3<\/td>\n<td>Active (rate adjustable)<\/td>\n<td>\u0ca8\u0cbf\u0cb7\u0ccd\u0c95\u0ccd\u0cb0\u0cbf\u0caf (\u0cb8\u0ccd\u0cb5\u0cbe\u0cad\u0cbe\u0cb5\u0cbf\u0c95 \u0ca8\u0cbf\u0ca7\u0cbe\u0ca8\u0c97\u0ca4\u0cbf)<\/td>\n<\/tr>\n<tr>\n<td>\u0c85\u0cb5\u0ca7\u0cbf<\/td>\n<td>\u0c95\u0ca1\u0cbf\u0cae\u0cc6 \u0c85\u0cb5\u0ca7\u0cbf\u0caf (\u0c9a\u0cbe\u0cb2\u0cbf\u0ca4 \u0cb5\u0cc7\u0c97\u0cb5\u0cb0\u0ccd\u0ca7\u0ca8\u0cc6)<\/td>\n<td>Longer (friction and windage only)<\/td>\n<\/tr>\n<tr>\n<td>\u0c86\u0cb5\u0cc3\u0ca4\u0ccd\u0ca4\u0cbf<\/td>\n<td>\u0caa\u0ccd\u0cb0\u0ca4\u0cbf \u0c86\u0cb0\u0c82\u0cad\u0ca6 \u0cb5\u0cc7\u0cb3\u0cc6<\/td>\n<td>\u0caa\u0ccd\u0cb0\u0ca4\u0cbf \u0cb8\u0ccd\u0ca5\u0c97\u0cbf\u0ca4\u0ca6 \u0cb5\u0cc7\u0cb3\u0cc6<\/td>\n<\/tr>\n<tr>\n<td>\u0c85\u0caa\u0cbe\u0caf<\/td>\n<td>\u0cb9\u0cc6\u0c9a\u0ccd\u0c9a\u0cc1 (\u0cb0\u0cc6\u0cb8\u0cca\u0ca8\u0ca8\u0ccd\u0cb8\u0ccd\u200c\u0c97\u0cc6 \u0cb5\u0cc7\u0c97\u0cb5\u0cb0\u0ccd\u0ca7\u0cbf\u0cb8\u0cc1\u0ca4\u0ccd\u0ca4\u0cbf\u0cb0\u0cc1\u0cb5\u0cbe\u0c97)<\/td>\n<td>\u0c95\u0ca1\u0cbf\u0cae\u0cc6 (\u0cb0\u0cc6\u0cb8\u0cca\u0ca8\u0ca8\u0ccd\u0cb8\u0ccd\u200c\u0ca8\u0cbf\u0c82\u0ca6 \u0ca8\u0cbf\u0ca7\u0cbe\u0ca8\u0c97\u0ca4\u0cbf\u0caf\u0cbe\u0c97\u0cc1\u0ca4\u0ccd\u0ca4 \u0cb9\u0cca\u0cb0\u0cac\u0cb0\u0cc1\u0cb5\u0cbe\u0c97)<\/td>\n<\/tr>\n<\/table>\n<h3>\u0caa\u0ccd\u0cb0\u0ca4\u0cbf \u0cb5\u0cbf\u0ca7\u0cbe\u0ca8\u0cb5\u0ca8\u0ccd\u0ca8\u0cc1 \u0caf\u0cbe\u0cb5\u0cbe\u0c97 \u0cac\u0cb3\u0cb8\u0cac\u0cc7\u0c95\u0cc1<\/h3>\n<ul>\n<li><strong>Runup preferred:<\/strong> when the startup is controlled and its rate can be adjusted; when data at operating temperature is needed; and for routine monitoring folded into normal starts.<\/li>\n<li><strong>Coastdown preferred:<\/strong> for safety-critical testing; when a slower, gentler passage through critical speeds is wanted; and when simply removing power is easier than orchestrating a controlled start. A dedicated <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/coastdown-analysis\/\">\u0c95\u0ccb\u0cb8\u0ccd\u0c9f\u0ccd\u200c\u0ca1\u0ccc\u0ca8\u0ccd \u0cb5\u0cbf\u0cb6\u0ccd\u0cb2\u0cc7\u0cb7\u0ca3\u0cc6<\/a> isolates pure structural resonances because no electrical or drive-related forcing is present.<\/li>\n<li><strong>Both methods:<\/strong> a comprehensive assessment compares hot against cold behaviour and confirms that the two agree, an important consistency check.<\/li>\n<\/ul>\n<h2>5. Special Considerations for Flexible Rotors<\/h2>\n<p>A <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/flexible-rotor\/\">\u0cb2\u0cb5\u0c9a\u0cbf\u0c95 \u0cb0\u0ccb\u0c9f\u0cb0\u0ccd<\/a> operates above one or more of its critical speeds, so its runup is inherently more demanding than that of a rigid rotor.<\/p>\n<h3>\u0cac\u0cb9\u0cc1 \u0c95\u0ccd\u0cb0\u0cbf\u0c9f\u0cbf\u0c95\u0cb2\u0ccd \u0cb5\u0cc7\u0c97\u0c97\u0cb3\u0cc1<\/h3>\n<ul>\n<li>The rotor must pass through the first, second and possibly third critical speeds on the way up.<\/li>\n<li>Each demands an adequate acceleration rate so the rotor does not linger in any one resonance.<\/li>\n<li>Total startup time may stretch to several minutes.<\/li>\n<li>Vibration monitoring at every critical speed is essential, not merely at the highest.<\/li>\n<\/ul>\n<h3>\u0cb5\u0cc7\u0c97\u0cb5\u0cb0\u0ccd\u0ca7\u0ca8\u0cbe \u0ca4\u0c82\u0ca4\u0ccd\u0cb0<\/h3>\n<ul>\n<li><strong>Slow acceleration<\/strong> below the first critical, allowing thermal preparation.<\/li>\n<li><strong>Rapid pass-through<\/strong> of each critical-speed zone to limit the amplitude that can build up.<\/li>\n<li><strong>Possible hold points<\/strong> at intermediate speeds for thermal stabilisation.<\/li>\n<li><strong>Final acceleration<\/strong> to an operating speed that sits above all the critical speeds.<\/li>\n<\/ul>\n<h2>6. Automated Runup Systems<\/h2>\n<p>Modern machinery often automates the runup sequence rather than leaving it to manual control:<\/p>\n<ul>\n<li><strong>Programmable acceleration profiles<\/strong> with rates optimised for each speed range.<\/li>\n<li><strong>Vibration-based control<\/strong> that adjusts the rate automatically in response to measured vibration.<\/li>\n<li><strong>Temperature interlocks<\/strong> that hold acceleration until thermal criteria are satisfied.<\/li>\n<li><strong>Safety shutdowns<\/strong> that trip the machine automatically if vibration exceeds its limits.<\/li>\n<li><strong>Data logging<\/strong> that records and archives every startup for trending.<\/li>\n<\/ul>\n<h2>7. Predicting and Verifying Critical Speeds<\/h2>\n<p>A runup is most valuable when its measured peaks can be checked against expectation. The speeds at which resonances should appear can be estimated beforehand \u2014 a <a href=\"https:\/\/vibromera.eu\/kn\/calculators\/rotor-critical-speed\/\">\u0cb6\u0cbe\u0cab\u0ccd\u0c9f \u0ca8\u0cbf\u0cb0\u0ccd\u0ca3\u0cbe\u0caf\u0c95-\u0cb5\u0cc7\u0c97 \u0c95\u0ccd\u0caf\u0cbe\u0cb2\u0ccd\u0c95\u0cc1\u0cb2\u0cc7\u0c9f\u0cb0\u0ccd<\/a> gives a first estimate of a shaft&#8217;s lowest critical speed, while a <a href=\"https:\/\/vibromera.eu\/kn\/calculators\/campbell-diagram-calculator\/\">Campbell-diagram calculator<\/a> maps how the natural frequencies cross the running-speed line as speed changes. Comparing the runup&#8217;s measured peaks with that predicted <a href=\"https:\/\/vibromera.eu\/kn\/glossary\/campbell-diagram\/\">\u0c95\u0ccd\u0caf\u0cbe\u0c82\u0caa\u0ccd\u0cac\u0cc6\u0cb2\u0ccd \u0cb0\u0cc7\u0c96\u0cbe\u0c9a\u0cbf\u0ca4\u0ccd\u0cb0<\/a> both validates the model and flags any unexpected resonance for investigation.<\/p>\n<p>The same field instrument used for balancing serves equally well for capturing a runup. A portable two-channel analyser such as the <a href=\"https:\/\/vibromera.eu\/kn\/%e0%b2%89%e0%b2%a4%e0%b3%8d%e0%b2%aa%e0%b2%a8%e0%b3%8d%e0%b2%a8\/balanset-1\/\">\u0cac\u0ccd\u0caf\u0cbe\u0cb2\u0cc6\u0ca8\u0ccd\u0cb8\u0cc6\u0c9f\u0ccd-1\u0c8e<\/a> records 1\u00d7 amplitude and phase against speed throughout the acceleration, producing the Bode and spectral plots an engineer needs to locate critical speeds and confirm safe passage through them \u2014 and, where the runup reveals an unbalance-driven peak, to balance the rotor in place at operating speed and verify the improvement on the very next start.<\/p>\n<p>Runup testing supplies essential, real-world data about how rotating machinery behaves during its most demanding moment \u2014 the startup transient. Collecting runup data regularly and comparing it over time enables early detection of developing problems, validates startup procedures, and assures safe passage through every critical-speed range.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/kn\/glossary\/\">\u2190 \u0cae\u0cc1\u0c96\u0ccd\u0caf \u0cb8\u0cc2\u0c9a\u0ccd\u0caf\u0cbe\u0c82\u0c95\u0c95\u0ccd\u0c95\u0cc6 \u0cb9\u0cbf\u0c82\u0ca4\u0cbf\u0cb0\u0cc1\u0c97\u0cbf<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Learn about runup, the controlled acceleration of rotating machinery from rest to operating speed used to identify critical speeds and validate rotor dynamic characteristics.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-227","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/glossary\/227","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/glossary\/227\/revisions"}],"predecessor-version":[{"id":101406,"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/glossary\/227\/revisions\/101406"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/media?parent=227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/categories?post=227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/tags?post=227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}