{"id":10582,"date":"2026-10-22T15:41:54","date_gmt":"2026-10-22T07:41:54","guid":{"rendered":"https:\/\/workshopdoor.com\/?p=10582"},"modified":"2026-10-22T16:05:17","modified_gmt":"2026-10-22T08:05:17","slug":"clean-room-door-interlock-system","status":"publish","type":"post","link":"https:\/\/workshopdoor.com\/de\/clean-room-door-interlock-system\/","title":{"rendered":"Cleanroom Door Interlock Systems: How They Work"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"10582\" class=\"elementor elementor-10582\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e7f4b27 e-flex e-con-boxed e-con e-parent\" data-id=\"e7f4b27\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a1edbd6 elementor-widget elementor-widget-html\" data-id=\"a1edbd6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!-- SEPPES article fragment. Paste into one Elementor HTML widget or WordPress Custom HTML block. -->\r\n<!-- SEO title: Clean Room Door Interlock System: How It Works | SEPPES -->\r\n<!-- Meta description: Learn how a clean room door interlock system works, how two-door airlocks control access, and how to select high-speed doors for cleanrooms and pharma. -->\r\n<!-- Keep the existing URL: https:\/\/workshopdoor.com\/blog-door-interlock-system\/ -->\r\n\r\n<style>\r\n\/* Hide the duplicate Easy Table of Contents only on a page containing this article. *\/\r\nbody:has(#scdi) #ez-toc-container,\r\n#scdi #ez-toc-container {\r\n  display: none !important;\r\n}\r\n\r\n\/* Keep the article title visible once if the theme also adds an entry title. *\/\r\nbody:has(#scdi) h1.entry-title {\r\n  display: none !important;\r\n}\r\n\r\n#scdi {\r\n  --blue: #0868bd;\r\n  --navy: #082b49;\r\n  --ink: #233c50;\r\n  --muted: #536b7c;\r\n  --line: #dce6ed;\r\n  --pale: #f2f7fb;\r\n  display: block;\r\n  width: 100%;\r\n  max-width: 1080px;\r\n  margin: 0 auto;\r\n  padding: clamp(18px, 3vw, 38px);\r\n  background: #fff;\r\n  color: var(--ink);\r\n  font: 400 17px\/1.75 Arial, Helvetica, sans-serif;\r\n  overflow-wrap: break-word;\r\n}\r\n\r\n#scdi,\r\n#scdi * {\r\n  box-sizing: border-box;\r\n}\r\n\r\n#scdi h1,\r\n#scdi h2,\r\n#scdi h3 {\r\n  font-family: inherit;\r\n  color: var(--navy);\r\n  font-weight: 700;\r\n  line-height: 1.28;\r\n  letter-spacing: normal;\r\n  text-transform: none;\r\n}\r\n\r\n#scdi h1 {\r\n  font-size: clamp(29px, 4vw, 44px);\r\n  margin: 0 0 20px;\r\n}\r\n\r\n#scdi h2 {\r\n  font-size: clamp(24px, 3vw, 30px);\r\n  margin: 0 0 20px;\r\n}\r\n\r\n#scdi h3 {\r\n  font-size: 21px;\r\n  margin: 28px 0 12px;\r\n}\r\n\r\n#scdi p {\r\n  margin: 0 0 18px;\r\n}\r\n\r\n#scdi a {\r\n  color: var(--blue);\r\n  text-decoration: underline;\r\n  text-underline-offset: 3px;\r\n}\r\n\r\n#scdi a:hover {\r\n  color: #064b88;\r\n}\r\n\r\n#scdi a:focus-visible,\r\n#scdi summary:focus-visible,\r\n#scdi .scdi-table-wrap:focus-visible {\r\n  outline: 3px solid #0868bd;\r\n  outline-offset: 4px;\r\n}\r\n\r\n#scdi .scdi-kicker {\r\n  font-size: 12px;\r\n  font-weight: 700;\r\n  letter-spacing: 1.5px;\r\n  color: var(--blue);\r\n  margin-bottom: 12px;\r\n}\r\n\r\n#scdi .scdi-lead {\r\n  font-size: 19px;\r\n  line-height: 1.7;\r\n}\r\n\r\n#scdi section {\r\n  margin-top: 44px;\r\n  scroll-margin-top: 110px;\r\n}\r\n\r\n#scdi figure {\r\n  margin: 26px 0;\r\n}\r\n\r\n#scdi figure img {\r\n  display: block;\r\n  width: 100%;\r\n  max-width: 100%;\r\n  height: auto;\r\n  border-radius: 12px;\r\n}\r\n\r\n#scdi figcaption {\r\n  font-size: 14px;\r\n  line-height: 1.6;\r\n  color: var(--muted);\r\n  margin-top: 10px;\r\n}\r\n\r\n\/* Article contents: a single vertical list, isolated from site menu styling. *\/\r\n#scdi nav.scdi-toc {\r\n  display: block !important;\r\n  position: static !important;\r\n  float: none !important;\r\n  width: 100% !important;\r\n  height: auto !important;\r\n  min-height: 0 !important;\r\n  max-height: none !important;\r\n  transform: none !important;\r\n  columns: auto !important;\r\n  background: var(--pale);\r\n  border: 1px solid var(--line);\r\n  border-radius: 12px;\r\n  padding: 22px 26px;\r\n  margin: 30px 0;\r\n  text-align: left;\r\n}\r\n\r\n#scdi .scdi-toc-title {\r\n  display: block;\r\n  margin: 0 0 10px;\r\n  color: var(--navy);\r\n  font-size: 18px;\r\n  font-weight: 700;\r\n  line-height: 1.4;\r\n}\r\n\r\n#scdi .scdi-toc-links {\r\n  display: grid !important;\r\n  grid-template-columns: minmax(0, 1fr) !important;\r\n  gap: 0 !important;\r\n  width: 100%;\r\n  margin: 0;\r\n  padding: 0;\r\n}\r\n\r\n#scdi .scdi-toc-links > a {\r\n  display: grid !important;\r\n  grid-template-columns: 28px minmax(0, 1fr) !important;\r\n  align-items: start;\r\n  gap: 10px;\r\n  position: static !important;\r\n  float: none !important;\r\n  width: 100%;\r\n  height: auto;\r\n  min-width: 0;\r\n  margin: 0;\r\n  padding: 11px 0;\r\n  border-bottom: 1px solid var(--line);\r\n  font-size: 15px;\r\n  font-weight: 500;\r\n  line-height: 1.55;\r\n  white-space: normal;\r\n  text-align: left;\r\n  text-decoration: none;\r\n}\r\n\r\n#scdi .scdi-toc-links > a:last-child {\r\n  border-bottom: 0;\r\n}\r\n\r\n#scdi .scdi-toc-links > a:hover {\r\n  color: #064b88;\r\n  text-decoration: underline;\r\n}\r\n\r\n#scdi .scdi-toc-links > a > span {\r\n  min-width: 0;\r\n}\r\n\r\n#scdi .scdi-toc-number {\r\n  color: var(--blue);\r\n  font-size: 13px;\r\n  font-weight: 700;\r\n  line-height: 1.8;\r\n}\r\n\r\n#scdi .scdi-definition {\r\n  display: grid;\r\n  grid-template-columns: minmax(0, 1fr) 225px;\r\n  gap: 28px;\r\n  align-items: start;\r\n}\r\n\r\n#scdi .scdi-small-figure {\r\n  width: 225px;\r\n  max-width: 100%;\r\n  margin: 0;\r\n}\r\n\r\n#scdi .scdi-small-figure img {\r\n  width: 225px;\r\n  max-width: 100%;\r\n  border-radius: 8px;\r\n}\r\n\r\n#scdi .scdi-note {\r\n  background: var(--pale);\r\n  border-left: 4px solid var(--blue);\r\n  padding: 18px 22px;\r\n  margin: 24px 0;\r\n  border-radius: 0 10px 10px 0;\r\n}\r\n\r\n#scdi .scdi-note p:last-child {\r\n  margin-bottom: 0;\r\n}\r\n\r\n#scdi .scdi-steps {\r\n  list-style: none;\r\n  counter-reset: scdi-step;\r\n  margin: 24px 0;\r\n  padding: 0;\r\n  display: grid;\r\n  grid-template-columns: repeat(2, minmax(0, 1fr));\r\n  gap: 14px;\r\n}\r\n\r\n#scdi .scdi-steps li {\r\n  counter-increment: scdi-step;\r\n  position: relative;\r\n  border: 1px solid var(--line);\r\n  border-radius: 10px;\r\n  padding: 20px 20px 20px 62px;\r\n  margin: 0;\r\n}\r\n\r\n#scdi .scdi-steps li::before {\r\n  content: counter(scdi-step);\r\n  position: absolute;\r\n  left: 18px;\r\n  top: 20px;\r\n  width: 29px;\r\n  height: 29px;\r\n  border-radius: 50%;\r\n  background: var(--blue);\r\n  color: #fff;\r\n  text-align: center;\r\n  font-size: 15px;\r\n  font-weight: 700;\r\n  line-height: 29px;\r\n}\r\n\r\n#scdi .scdi-steps strong {\r\n  display: block;\r\n  color: var(--navy);\r\n  margin-bottom: 6px;\r\n}\r\n\r\n#scdi .scdi-steps p {\r\n  font-size: 15px;\r\n  line-height: 1.65;\r\n  margin: 0;\r\n}\r\n\r\n#scdi .scdi-table-wrap {\r\n  width: 100%;\r\n  max-width: 100%;\r\n  overflow-x: auto;\r\n  border: 1px solid var(--line);\r\n  border-radius: 10px;\r\n  margin: 24px 0;\r\n  -webkit-overflow-scrolling: touch;\r\n}\r\n\r\n#scdi table {\r\n  border-collapse: collapse;\r\n  border-spacing: 0;\r\n  width: 100%;\r\n  min-width: 600px;\r\n  margin: 0;\r\n  font-size: 15px;\r\n  line-height: 1.6;\r\n  background: #fff;\r\n}\r\n\r\n#scdi caption {\r\n  text-align: left;\r\n  font-size: 14px;\r\n  font-weight: 700;\r\n  color: var(--navy);\r\n  padding: 14px 18px;\r\n  caption-side: top;\r\n  background: var(--pale);\r\n}\r\n\r\n#scdi th {\r\n  background: var(--navy);\r\n  color: #fff;\r\n  text-align: left;\r\n  font-weight: 700;\r\n  border: 0;\r\n  padding: 15px 18px;\r\n  vertical-align: top;\r\n}\r\n\r\n#scdi td {\r\n  padding: 15px 18px;\r\n  border: 0;\r\n  border-bottom: 1px solid var(--line);\r\n  vertical-align: top;\r\n  color: var(--ink);\r\n}\r\n\r\n#scdi tbody tr:nth-child(even) {\r\n  background: #f7fafc;\r\n}\r\n\r\n#scdi tbody tr:last-child td {\r\n  border-bottom: 0;\r\n}\r\n\r\n#scdi .scdi-list {\r\n  padding-left: 24px;\r\n  margin: 16px 0 22px;\r\n}\r\n\r\n#scdi .scdi-list li {\r\n  padding-left: 3px;\r\n  margin: 0 0 10px;\r\n}\r\n\r\n#scdi .scdi-reference {\r\n  font-size: 14px;\r\n  color: var(--muted);\r\n}\r\n\r\n#scdi details {\r\n  border: 1px solid var(--line);\r\n  border-radius: 10px;\r\n  padding: 17px 20px;\r\n  margin: 12px 0;\r\n  background: #fff;\r\n}\r\n\r\n#scdi summary {\r\n  display: list-item;\r\n  cursor: pointer;\r\n  color: var(--navy);\r\n  font-size: 17px;\r\n  font-weight: 700;\r\n  line-height: 1.5;\r\n}\r\n\r\n#scdi details p {\r\n  font-size: 16px;\r\n  margin: 14px 0 0;\r\n}\r\n\r\n#scdi .scdi-cta {\r\n  background: var(--navy);\r\n  color: #fff;\r\n  border-radius: 14px;\r\n  padding: clamp(24px, 4vw, 38px);\r\n  margin-top: 40px;\r\n}\r\n\r\n#scdi .scdi-cta h2 {\r\n  color: #fff;\r\n  margin-bottom: 14px;\r\n}\r\n\r\n#scdi .scdi-cta p {\r\n  color: #eef5fa;\r\n}\r\n\r\n#scdi .scdi-button {\r\n  display: inline-block;\r\n  background: #fff;\r\n  color: var(--navy);\r\n  border: 2px solid #fff;\r\n  border-radius: 7px;\r\n  padding: 12px 22px;\r\n  font-size: 16px;\r\n  font-weight: 700;\r\n  line-height: 1.45;\r\n  text-decoration: none;\r\n  margin-top: 6px;\r\n}\r\n\r\n#scdi .scdi-button:hover {\r\n  background: #eaf4fc;\r\n  color: var(--navy);\r\n}\r\n\r\n#scdi .scdi-cta .scdi-button:focus-visible {\r\n  outline-color: #fff;\r\n}\r\n\r\n#scdi .scdi-related {\r\n  border-top: 1px solid var(--line);\r\n  padding-top: 24px;\r\n  margin-top: 30px;\r\n}\r\n\r\n@media (max-width: 640px) {\r\n  #scdi {\r\n    font-size: 16px;\r\n    padding: 20px 16px;\r\n  }\r\n\r\n  #scdi .scdi-lead {\r\n    font-size: 18px;\r\n  }\r\n\r\n  #scdi nav.scdi-toc {\r\n    padding: 18px;\r\n  }\r\n\r\n  #scdi .scdi-toc-links > a {\r\n    grid-template-columns: 24px minmax(0, 1fr) !important;\r\n    gap: 8px;\r\n  }\r\n\r\n  #scdi .scdi-steps,\r\n  #scdi .scdi-definition {\r\n    grid-template-columns: 1fr;\r\n  }\r\n\r\n  #scdi .scdi-definition {\r\n    gap: 14px;\r\n  }\r\n\r\n  #scdi .scdi-small-figure {\r\n    margin: 0 auto 10px;\r\n  }\r\n\r\n  #scdi section {\r\n    margin-top: 36px;\r\n  }\r\n\r\n  #scdi h3 {\r\n    font-size: 20px;\r\n  }\r\n\r\n  #scdi .scdi-steps li {\r\n    padding-right: 16px;\r\n  }\r\n\r\n  #scdi .scdi-button {\r\n    display: block;\r\n    text-align: center;\r\n  }\r\n\r\n  #scdi details {\r\n    padding: 16px;\r\n  }\r\n}\r\n\r\n@media (prefers-reduced-motion: no-preference) {\r\n  #scdi a {\r\n    transition: color .15s ease, background-color .15s ease;\r\n  }\r\n}\r\n<\/style>\r\n\r\n<article id=\"scdi\" lang=\"en\" aria-labelledby=\"scdi-title\">\r\n\r\n  <div class=\"scdi-intro\">\r\n    <p class=\"scdi-kicker\">SEPPES CLEANROOM SOLUTIONS<\/p>\r\n\r\n    <h1 id=\"scdi-title\"><span class=\"ez-toc-section\" id=\"Clean_Room_Door_Interlock_System_How_It_Works\"><\/span>\r\n      Clean Room Door Interlock System: How It Works\r\n    <span class=\"ez-toc-section-end\"><\/span><\/h1>\r\n\r\n    <p class=\"scdi-lead\">\r\n      A <strong>clean room door interlock system<\/strong> coordinates two or\r\n      more doors so that selected doors cannot open together during normal\r\n      operation. In a two-door airlock, one door must close and its position\r\n      must be confirmed before the other receives permission to open.\r\n    <\/p>\r\n\r\n    <p>\r\n      This controlled sequence helps limit direct air exchange between\r\n      adjoining areas. For pharmaceutical buyers and cleanroom engineers,\r\n      the complete solution includes the doors, position feedback, control\r\n      logic and the room's operating requirements. This guide explains the\r\n      sequence, the main components and how to specify suitable high-speed\r\n      doors.\r\n    <\/p>\r\n  <\/div>\r\n\r\n  <figure>\r\n    <img fetchpriority=\"high\"\r\n      src=\"https:\/\/workshopdoor.com\/wp-content\/uploads\/2024\/05\/%E6%9C%AA%E6%A0%87%E9%A2%98-2-06.jpg\"\r\n      alt=\"SEPPES blue high-speed doors with stainless steel frames in a cleanroom corridor\"\r\n      width=\"1251\"\r\n      height=\"834\"\r\n      loading=\"eager\"\r\n      decoding=\"async\"\r\n    >\r\n    <figcaption>\r\n      SEPPES cleanroom high-speed doors. Interlock operation is specified\r\n      through the door controls and position-feedback signals.\r\n    <\/figcaption>\r\n  <\/figure>\r\n\r\n  <nav class=\"scdi-toc\" aria-label=\"Article contents\">\r\n    <p class=\"scdi-toc-title\">Inhalts\u00fcbersicht<\/p>\r\n\r\n    <div class=\"scdi-toc-links\">\r\n      <a href=\"#scdi-definition\">\r\n        <span class=\"scdi-toc-number\" aria-hidden=\"true\">01<\/span>\r\n        <span>What an interlock does<\/span>\r\n      <\/a>\r\n\r\n      <a href=\"#scdi-sequence\">\r\n        <span class=\"scdi-toc-number\" aria-hidden=\"true\">02<\/span>\r\n        <span>How two-door interlocking works<\/span>\r\n      <\/a>\r\n\r\n      <a href=\"#scdi-components\">\r\n        <span class=\"scdi-toc-number\" aria-hidden=\"true\">03<\/span>\r\n        <span>Components and control signals<\/span>\r\n      <\/a>\r\n\r\n      <a href=\"#scdi-applications\">\r\n        <span class=\"scdi-toc-number\" aria-hidden=\"true\">04<\/span>\r\n        <span>Pharmaceutical applications<\/span>\r\n      <\/a>\r\n\r\n      <a href=\"#scdi-door-types\">\r\n        <span class=\"scdi-toc-number\" aria-hidden=\"true\">05<\/span>\r\n        <span>Choosing the door type<\/span>\r\n      <\/a>\r\n\r\n      <a href=\"#scdi-specification\">\r\n        <span class=\"scdi-toc-number\" aria-hidden=\"true\">06<\/span>\r\n        <span>Specification and commissioning<\/span>\r\n      <\/a>\r\n\r\n      <a href=\"#scdi-faq\">\r\n        <span class=\"scdi-toc-number\" aria-hidden=\"true\">07<\/span>\r\n        <span>Frequently asked questions<\/span>\r\n      <\/a>\r\n    <\/div>\r\n  <\/nav>\r\n\r\n  <section id=\"scdi-definition\">\r\n    <h2><span class=\"ez-toc-section\" id=\"What_Is_a_Clean_Room_Door_Interlock_System\"><\/span>What Is a Clean Room Door Interlock System?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <div class=\"scdi-definition\">\r\n      <div>\r\n        <p>\r\n          A cleanroom interlock system manages permission to open doors that\r\n          separate controlled areas. A typical arrangement uses an enclosed\r\n          airlock between two rooms. Preventing both airlock doors from\r\n          opening together avoids creating a direct passage between those\r\n          environments.\r\n        <\/p>\r\n\r\n        <p>\r\n          Interlocking supports the facility's contamination-control\r\n          strategy, but the room still depends on its ventilation,\r\n          filtration, cleaning procedures and door sealing. Closing one\r\n          door does not by itself prove that the required room pressure or\r\n          cleanliness has been restored.\r\n        <\/p>\r\n\r\n        <p>\r\n          For a technical introduction, see American Cleanroom Systems'\r\n          explanation of\r\n          <a href=\"https:\/\/www.americancleanrooms.com\/what-is-a-cleanroom-interlock\/\" target=\"_blank\" rel=\"noopener noreferrer\">cleanroom interlock operating principles<\/a>.\r\n        <\/p>\r\n      <\/div>\r\n\r\n      <figure class=\"scdi-small-figure\">\r\n        <img loading=\"lazy\"\r\n          src=\"https:\/\/workshopdoor.com\/wp-content\/uploads\/2026\/06\/door-interlock-system-for-cleanroom-high-speed-doors.jpg\"\r\n          alt=\"Illustration of a two-door airlock with the front high-speed door open and the rear door closed\"\r\n          width=\"225\"\r\n          height=\"225\"\r\n          decoding=\"async\"\r\n        >\r\n        <figcaption>\r\n          A two-door airlock: one door opens while the other remains closed.\r\n        <\/figcaption>\r\n      <\/figure>\r\n    <\/div>\r\n\r\n    <div class=\"scdi-note\">\r\n      <p>\r\n        <strong>Door type and control function are separate choices.<\/strong>\r\n        Cleanroom doors may be hinged, sliding or roll-up designs. A zipper\r\n        mechanism describes a particular high-speed door structure; an\r\n        interlock describes how doors are controlled together.\r\n      <\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section id=\"scdi-sequence\">\r\n    <h2><span class=\"ez-toc-section\" id=\"How_Does_a_Two-Door_Interlock_System_Work\"><\/span>How Does a Two-Door Interlock System Work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      The following example shows a typical transfer through Door A into\r\n      an airlock and then through Door B. The project specification\r\n      determines the opening requests, waiting conditions and fault\r\n      responses.\r\n    <\/p>\r\n\r\n    <ol class=\"scdi-steps\">\r\n      <li>\r\n        <strong>Confirm the starting state<\/strong>\r\n        <p>\r\n          Both doors report closed. The controller checks the signals and\r\n          any configured conditions before accepting a transfer request.\r\n        <\/p>\r\n      <\/li>\r\n\r\n      <li>\r\n        <strong>Request Door A to open<\/strong>\r\n        <p>\r\n          A push button, sensor or approved automation input requests entry.\r\n          Door A receives permission only when the interlock conditions\r\n          allow it.\r\n        <\/p>\r\n      <\/li>\r\n\r\n      <li>\r\n        <strong>Keep Door B inhibited<\/strong>\r\n        <p>\r\n          While Door A opens, remains open or closes, Door B's normal\r\n          opening permission stays blocked.\r\n        <\/p>\r\n      <\/li>\r\n\r\n      <li>\r\n        <strong>Confirm Door A has closed<\/strong>\r\n        <p>\r\n          The controller checks closed-position feedback. Any specified\r\n          recovery delay or process condition must also be satisfied.\r\n        <\/p>\r\n      <\/li>\r\n\r\n      <li>\r\n        <strong>Permit Door B to open<\/strong>\r\n        <p>\r\n          Door B becomes available for the next opening request. Door A\r\n          remains inhibited throughout Door B's cycle. Automatic sequential\r\n          opening must be specified separately.\r\n        <\/p>\r\n      <\/li>\r\n\r\n      <li>\r\n        <strong>Complete the transfer<\/strong>\r\n        <p>\r\n          Door B closes and its position is confirmed. The system returns\r\n          to its agreed ready state for the next cycle.\r\n        <\/p>\r\n      <\/li>\r\n    <\/ol>\r\n\r\n    <p>\r\n      <strong>A closed signal and a closing command are different.<\/strong>\r\n      The controller should use the required position feedback before\r\n      releasing the next door. A fixed timer alone cannot confirm that an\r\n      obstructed door has actually closed.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section id=\"scdi-components\">\r\n    <h2><span class=\"ez-toc-section\" id=\"Main_Components_of_a_Cleanroom_Interlock_System\"><\/span>Main Components of a Cleanroom Interlock System<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      The hardware depends on the selected door system. Hinged personnel\r\n      doors may use electrically controlled locks. Powered high-speed\r\n      doors can use compatible controllers that exchange status and\r\n      inhibit opening.\r\n    <\/p>\r\n\r\n    <div\r\n      class=\"scdi-table-wrap\"\r\n      role=\"region\"\r\n      aria-label=\"Interlock components table, scroll horizontally on small screens\"\r\n      tabindex=\"0\"\r\n    >\r\n      <table>\r\n        <caption>\r\n          Control functions to confirm with the door supplier\r\n        <\/caption>\r\n\r\n        <thead>\r\n          <tr>\r\n            <th scope=\"col\">Component or function<\/th>\r\n            <th scope=\"col\">Purpose<\/th>\r\n            <th scope=\"col\">What to confirm<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n\r\n        <tbody>\r\n          <tr>\r\n            <td><strong>Door-position feedback<\/strong><\/td>\r\n            <td>Reports the required door position.<\/td>\r\n            <td>\r\n              How fully closed status is detected and how a missing\r\n              signal is handled.\r\n            <\/td>\r\n          <\/tr>\r\n\r\n          <tr>\r\n            <td><strong>Interlock controller<\/strong><\/td>\r\n            <td>Evaluates conditions and manages opening permission.<\/td>\r\n            <td>\r\n              Door grouping, simultaneous requests, priorities and\r\n              reset behaviour.\r\n            <\/td>\r\n          <\/tr>\r\n\r\n          <tr>\r\n            <td><strong>Opening inputs<\/strong><\/td>\r\n            <td>Receive requests from operators or automation.<\/td>\r\n            <td>\r\n              Push buttons, radar, access control or agreed PLC interfaces.\r\n            <\/td>\r\n          <\/tr>\r\n\r\n          <tr>\r\n            <td><strong>Locking or movement inhibition<\/strong><\/td>\r\n            <td>\r\n              Keeps the selected door unavailable during the other\r\n              door's cycle.\r\n            <\/td>\r\n            <td>\r\n              The mechanism appropriate to that door and its controller.\r\n            <\/td>\r\n          <\/tr>\r\n\r\n          <tr>\r\n            <td><strong>Status indicators<\/strong><\/td>\r\n            <td>Communicate ready, waiting or fault conditions.<\/td>\r\n            <td>\r\n              Indicator positions and clear instructions for operators.\r\n            <\/td>\r\n          <\/tr>\r\n\r\n          <tr>\r\n            <td><strong>Optional process inputs<\/strong><\/td>\r\n            <td>Add a specified delay or pressure-related condition.<\/td>\r\n            <td>\r\n              The source of the signal, setpoints and response to\r\n              signal failure.\r\n            <\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <p>\r\n      Document the signal interface before ordering. The specification\r\n      should identify contact or communication requirements, voltage\r\n      compatibility, signal meanings and which supplier provides the\r\n      interlock logic.\r\n    <\/p>\r\n\r\n    <p>\r\n      Obstacle protection remains a separate requirement. Interlock logic\r\n      does not replace the door's safety edge, light curtain or other\r\n      specified protective devices. See our\r\n      <a href=\"https:\/\/workshopdoor.com\/de\/high-speed-door-safety-sensors\/\">\r\n        high-speed door safety sensor guide<\/a>\r\n      for the roles of different sensors.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section id=\"scdi-applications\">\r\n    <h2><span class=\"ez-toc-section\" id=\"Where_Are_Pharmaceutical_Door_Interlock_Systems_Used\"><\/span>Where Are Pharmaceutical Door Interlock Systems Used?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <h3><span class=\"ez-toc-section\" id=\"Personnel_Airlocks_and_Changing_Rooms\"><\/span>Personnel Airlocks and Changing Rooms<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n    <p>\r\n      Personnel airlocks help organise movement between areas with\r\n      different environmental requirements. Door selection should\r\n      consider staff numbers, hands-free operation, available space and\r\n      the facility's entry and exit procedures.\r\n    <\/p>\r\n\r\n    <h3><span class=\"ez-toc-section\" id=\"Material_Transfer_Rooms\"><\/span>Material Transfer Rooms<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n    <p>\r\n      For carts, pallet trucks and automated transport, check that the\r\n      airlock can contain the full load before either door closes. A\r\n      fast door cycle is useful only when the waiting space, detection\r\n      zones and transfer sequence also suit the traffic.\r\n    <\/p>\r\n\r\n    <h3><span class=\"ez-toc-section\" id=\"Air_Showers_and_Process-Controlled_Entrances\"><\/span>Air Showers and Process-Controlled Entrances<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n    <p>\r\n      Where an entrance includes an air-shower or another defined\r\n      process cycle, door permission may depend on that process\r\n      finishing. The door supplier and process-equipment supplier\r\n      should agree the signals and release conditions.\r\n    <\/p>\r\n\r\n    <div class=\"scdi-note\">\r\n      <p>\r\n        <strong>For sterile medicinal product facilities:<\/strong>\r\n        <a href=\"https:\/\/health.ec.europa.eu\/system\/files\/2022-08\/20220825_gmp-an1_en_0.pdf#page=9\" target=\"_blank\" rel=\"noopener noreferrer\">EU GMP Annex 1, section 4.13<\/a>,\r\n        addresses airlocks and pass-through hatches within its scope.\r\n        Entry and exit doors should not open together. Airlocks serving\r\n        Grade A or B areas should use interlocking; for Grade C or D,\r\n        visual and\/or audible warning is the minimum provision. A delay\r\n        is established where needed to maintain area segregation.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <p>\r\n      This does not make every interlocked doorway suitable for every\r\n      pharmaceutical process. For broader door-selection considerations,\r\n      read our\r\n      <a href=\"https:\/\/workshopdoor.com\/de\/pharmazeutische-reinraumtur-ein-umfassender-leitfaden\/\">\r\n        pharmaceutical cleanroom door guide<\/a>.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section id=\"scdi-door-types\">\r\n    <h2><span class=\"ez-toc-section\" id=\"Choosing_Clean_Room_High-Speed_Doors_for_Interlock_Applications\"><\/span>\r\n      Choosing Clean Room High-Speed Doors for Interlock Applications\r\n    <span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      Choose the door around the opening, traffic and environmental\r\n      specification. An interlock can coordinate suitable doors with\r\n      different opening mechanisms; it does not determine their sealing\r\n      performance or cleanability.\r\n    <\/p>\r\n\r\n    <div\r\n      class=\"scdi-table-wrap\"\r\n      role=\"region\"\r\n      aria-label=\"Cleanroom door types table, scroll horizontally on small screens\"\r\n      tabindex=\"0\"\r\n    >\r\n      <table>\r\n        <caption>\r\n          Door types to evaluate for an interlocked entrance\r\n        <\/caption>\r\n\r\n        <thead>\r\n          <tr>\r\n            <th scope=\"col\">Typ der T\u00fcr<\/th>\r\n            <th scope=\"col\">Application to consider<\/th>\r\n            <th scope=\"col\">Selection questions<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n\r\n        <tbody>\r\n          <tr>\r\n            <td><strong>Hinged cleanroom doors<\/strong><\/td>\r\n            <td>Personnel access and changing rooms.<\/td>\r\n            <td>\r\n              Is swing clearance available? How will closing, locking\r\n              and emergency release work?\r\n            <\/td>\r\n          <\/tr>\r\n\r\n          <tr>\r\n            <td><strong>Sliding cleanroom doors<\/strong><\/td>\r\n            <td>Entrances where a swing arc is inconvenient.<\/td>\r\n            <td>\r\n              Check side clearance, sealing, controls and access for\r\n              cleaning tracks or recesses.\r\n            <\/td>\r\n          <\/tr>\r\n\r\n          <tr>\r\n            <td><strong>: Hohe Temperaturkontrollanforderungen, Aufrechterhaltung einer stabilen Produktionsumgebung<\/strong><\/td>\r\n            <td>Frequent movement of materials, carts or vehicles.<\/td>\r\n            <td>\r\n              What are the traffic, leakage, pressure, cleaning and\r\n              interface requirements?\r\n            <\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <h3><span class=\"ez-toc-section\" id=\"Cleanroom_Roll-Up_Doors_for_Material_Transfer\"><\/span>Cleanroom Roll-Up Doors for Material Transfer<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n\r\n    <p>\r\n      <strong>Cleanroom roll up doors<\/strong> can provide access for\r\n      frequent material movement while keeping the floor area clear of\r\n      a door swing. Evaluate opening dimensions, operating speed,\r\n      required clearances and the complete transfer cycle. The\r\n      airlock's useful throughput also includes travel time, closing\r\n      time and any required waiting period.\r\n    <\/p>\r\n\r\n    <p>\r\n      Explore our\r\n      <a href=\"https:\/\/workshopdoor.com\/de\/anwendungen\/reinraum\/\">\r\n        cleanroom door solutions<\/a>\r\n      to compare the application with the available door configurations.\r\n    <\/p>\r\n\r\n    <h3><span class=\"ez-toc-section\" id=\"Zipper_Guides_and_Self-Repairing_Curtain_Features\"><\/span>Zipper Guides and Self-Repairing Curtain Features<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n\r\n    <p>\r\n      A <strong>Hochgeschwindigkeits-Rei\u00dfverschlusstor<\/strong> uses a zipper-style\r\n      side-guiding arrangement. On models with a self-repairing\r\n      function, a curtain that has been displaced from its guides can\r\n      reinsert during an operating cycle. This feature does not repair\r\n      torn fabric or damaged components.\r\n    <\/p>\r\n\r\n    <p>\r\n      For a cleanroom project, review the actual configuration: frame\r\n      and curtain materials, access for cleaning, sealing details,\r\n      pressure conditions and compatible controls. Zipper guidance or\r\n      automatic reinsertion alone is not evidence of a particular\r\n      cleanliness class.\r\n    <\/p>\r\n\r\n    <p>\r\n      Our\r\n      <a href=\"https:\/\/workshopdoor.com\/de\/produkte\/schnelllauftore-2\/reisverschlusstur\/\">\r\n        SEPPES high-speed zipper door<\/a>\r\n      page introduces the product structure and available options.\r\n      Confirm the interlock interface and project-specific performance\r\n      when requesting a quotation.\r\n    <\/p>\r\n\r\n    <figure>\r\n      <img loading=\"lazy\"\r\n        src=\"https:\/\/workshopdoor.com\/wp-content\/uploads\/2024\/05\/zipper-high-speed-door-03.jpg\"\r\n        alt=\"Yellow high-speed zipper doors with vision panels in an industrial facility\"\r\n        width=\"1251\"\r\n        height=\"834\"\r\n        decoding=\"async\"\r\n      >\r\n      <figcaption>\r\n        Zipper roll-up door configuration. Cleanroom suitability and\r\n        interlock operation depend on the specified model and controls.\r\n      <\/figcaption>\r\n    <\/figure>\r\n\r\n    <p class=\"scdi-reference\">\r\n      <a href=\"https:\/\/www.iso.org\/standard\/53394.html\" target=\"_blank\" rel=\"noopener noreferrer\">ISO 14644-1<\/a>\r\n      classifies air cleanliness by airborne particle concentration.\r\n      It does not by itself certify a door or interlock system. Assess\r\n      door suitability against the room specification and relevant\r\n      performance evidence.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section id=\"scdi-specification\">\r\n    <h2><span class=\"ez-toc-section\" id=\"What_to_Specify_Before_Ordering_an_Interlock_Door_System\"><\/span>What to Specify Before Ordering an Interlock Door System<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      A useful enquiry describes the complete entrance. Send the supplier\r\n      the following information so that the door and controls can be\r\n      evaluated together:\r\n    <\/p>\r\n\r\n    <ul class=\"scdi-list\">\r\n      <li>\r\n        <strong>Layout:<\/strong>\r\n        number of doors, airlock dimensions, travel direction and which\r\n        doors must be mutually interlocked.\r\n      <\/li>\r\n\r\n      <li>\r\n        <strong>Openings:<\/strong>\r\n        clear width and height, wall construction, headroom and\r\n        side clearance.\r\n      <\/li>\r\n\r\n      <li>\r\n        <strong>Traffic:<\/strong>\r\n        people, carts, forklifts or AGVs; load dimensions and expected\r\n        operating frequency.\r\n      <\/li>\r\n\r\n      <li>\r\n        <strong>Environment:<\/strong>\r\n        room classification, pressure requirements, temperature and\r\n        cleaning chemicals.\r\n      <\/li>\r\n\r\n      <li>\r\n        <strong>Control sequence:<\/strong>\r\n        opening requests, closed feedback, any delay or process\r\n        permission, and manual operating modes.\r\n      <\/li>\r\n\r\n      <li>\r\n        <strong>Interfaces:<\/strong>\r\n        power supply, compatible signals, cable responsibilities and\r\n        integration with other equipment.\r\n      <\/li>\r\n\r\n      <li>\r\n        <strong>Abnormal conditions:<\/strong>\r\n        the required response to obstruction, signal failure, power\r\n        loss, emergency release and fire-system inputs.\r\n      <\/li>\r\n    <\/ul>\r\n\r\n    <h3><span class=\"ez-toc-section\" id=\"Check_the_Complete_Sequence_During_Commissioning\"><\/span>Check the Complete Sequence During Commissioning<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n\r\n    <p>\r\n      Use an agreed acceptance procedure to check each travel direction,\r\n      simultaneous opening requests, a door that cannot close, loss of\r\n      position feedback and recovery after an interruption. Confirm\r\n      that indicators explain the system state and that operators\r\n      understand waiting and reset procedures.\r\n    <\/p>\r\n\r\n    <p>\r\n      Emergency stop, emergency release and automatic opening are\r\n      different functions. Their behaviour must match the selected\r\n      equipment and the site's approved escape and fire arrangements.\r\n      A standard cleanroom sequencing interlock should also not be\r\n      treated as a substitute for a separately designed machine-safety\r\n      function.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section id=\"scdi-faq\">\r\n    <h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>H\u00e4ufig gestellte Fragen<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <details>\r\n      <summary>Are cleanroom doors always zipper doors?<\/summary>\r\n      <p>\r\n        No. Cleanroom doors include hinged, sliding and roll-up designs.\r\n        Zipper guidance is one construction option for a high-speed\r\n        door. Choose the door type and interlock controls against the\r\n        actual application.\r\n      <\/p>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Does the second door open automatically?<\/summary>\r\n      <p>\r\n        Not necessarily. Interlocking controls whether the second door\r\n        is permitted to open. Automatically opening it after the first\r\n        door closes requires a separately specified sequence and\r\n        appropriate protective measures.\r\n      <\/p>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>\r\n        Can an existing high-speed door be connected to an interlock?\r\n      <\/summary>\r\n      <p>\r\n        Possibly. Check the controller model, available inputs and\r\n        outputs, closed-position feedback, protective devices and\r\n        supplier documentation. Compatibility should be confirmed\r\n        before assuming that a retrofit only needs an additional cable.\r\n      <\/p>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Is a fixed time delay enough?<\/summary>\r\n      <p>\r\n        A delay cannot replace confirmation that the first door has\r\n        closed. Where a recovery period or pressure-related condition\r\n        is required, establish it from the process and room performance\r\n        rather than choosing a universal delay for every installation.\r\n      <\/p>\r\n    <\/details>\r\n\r\n    <details>\r\n      <summary>Can more than two doors be interlocked?<\/summary>\r\n      <p>\r\n        Yes, with suitable controls. Define the permitted combinations,\r\n        request priorities and recovery procedure. A three-door\r\n        arrangement needs an explicit operating sequence rather than\r\n        an assumed extension of a two-door connection.\r\n      <\/p>\r\n    <\/details>\r\n  <\/section>\r\n\r\n  <section class=\"scdi-cta\" aria-labelledby=\"scdi-quote-title\">\r\n    <h2 id=\"scdi-quote-title\"><span class=\"ez-toc-section\" id=\"Plan_Your_Cleanroom_Door_Interlock_Solution\"><\/span>\r\n      Plan Your Cleanroom Door Interlock Solution\r\n    <span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      Share your opening dimensions, airlock layout, door quantity,\r\n      traffic type and control requirements with SEPPES. Marina and our\r\n      sales engineering team can help review suitable door configurations\r\n      and prepare a project-specific quotation.\r\n    <\/p>\r\n\r\n    <a class=\"scdi-button\" href=\"https:\/\/workshopdoor.com\/de\/kontakt\/\">Discuss Your Project with SEPPES<\/a>\r\n  <\/section>\r\n\r\n  <aside class=\"scdi-related\" aria-label=\"Related SEPPES resources\">\r\n    <p>\r\n      <strong>Related resources:<\/strong>\r\n      <a href=\"https:\/\/workshopdoor.com\/de\/anwendungen\/reinraum\/\">\r\n        Cleanroom door solutions<\/a>\r\n      \u00b7\r\n      <a href=\"https:\/\/workshopdoor.com\/de\/produkte\/schnelllauftore-2\/reisverschlusstur\/\">\r\n        Hochgeschwindigkeits-Rei\u00dfverschlusst\u00fcren<\/a>\r\n      \u00b7\r\n      <a href=\"https:\/\/workshopdoor.com\/de\/pharmazeutische-reinraumtur-ein-umfassender-leitfaden\/\">\r\n        Pharmaceutical door selection<\/a>\r\n    <\/p>\r\n  <\/aside>\r\n\r\n<\/article>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>SEPPES CLEANROOM SOLUTIONS Clean Room Door Interlock System: How It Works A clean room door interlock system coordinates two or more doors so that selected doors cannot open together during normal operation. In a two-door airlock, one door must close and its position must be confirmed before the other receives permission to open. This controlled [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6494,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1,22,60],"tags":[],"class_list":["post-10582","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-high-speed-door","category-industry-solutions"],"_links":{"self":[{"href":"https:\/\/workshopdoor.com\/de\/wp-json\/wp\/v2\/posts\/10582","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/workshopdoor.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/workshopdoor.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/workshopdoor.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/workshopdoor.com\/de\/wp-json\/wp\/v2\/comments?post=10582"}],"version-history":[{"count":8,"href":"https:\/\/workshopdoor.com\/de\/wp-json\/wp\/v2\/posts\/10582\/revisions"}],"predecessor-version":[{"id":10606,"href":"https:\/\/workshopdoor.com\/de\/wp-json\/wp\/v2\/posts\/10582\/revisions\/10606"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/workshopdoor.com\/de\/wp-json\/wp\/v2\/media\/6494"}],"wp:attachment":[{"href":"https:\/\/workshopdoor.com\/de\/wp-json\/wp\/v2\/media?parent=10582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/workshopdoor.com\/de\/wp-json\/wp\/v2\/categories?post=10582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/workshopdoor.com\/de\/wp-json\/wp\/v2\/tags?post=10582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}