{"id":5836,"date":"2025-05-26T09:30:03","date_gmt":"2025-05-26T08:30:03","guid":{"rendered":"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/?page_id=5836"},"modified":"2025-05-26T09:30:04","modified_gmt":"2025-05-26T08:30:04","slug":"dali","status":"publish","type":"page","link":"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/?page_id=5836","title":{"rendered":"DALI"},"content":{"rendered":"\n<p>While KNX is good for controlling many types of building services it&#8217;s not ideal for lighting control. Native KNX dimmers are available but the choice is limited (although improving over time) and they tend to be expensive whereas the alternative <a href=\"https:\/\/en.wikipedia.org\/wiki\/Digital_Addressable_Lighting_Interface\" target=\"_blank\" rel=\"noopener\">DALI standard<\/a> is much more commonly used for dimmable lighting &#8211; and there&#8217;s a good choice of &#8216;gateway&#8217; devices which bridge between the KNX and DALI protocols so it&#8217;s not unusual to see both standards combined on one project. A DALI-KNX gateway presents all the DALI devices on the KNX bus so they <em>look<\/em> like KNX devices from a control standpoint, offering the best of both worlds.<\/p>\n\n\n\n<p>The DALI standard is broadly equivalent to KNX in as much as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>It is not owned by any single manufacturer and it is common to mix-and-max devices from different companies in one installation<\/li>\n\n\n\n<li>Communication is across a dedicated &#8216;bus&#8217; network (separate from the KNX &#8216;bus&#8217;, using a different type of cable)<\/li>\n<\/ul>\n\n\n\n<p>A good illustration of the flexibility of the DALI standard is shown in the photo below (a real example from the Utility Room in the House). There are 5 different DALI controllers of 3 different types:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The white-and-green AURORA AU-DATR400 controller on the far left generates a dimmed 230V AC output suitable for table lamps with dimmable mains-voltage bulbs (connected via round-pin plugs; this one is for the circuit in the Dining Room)<\/li>\n\n\n\n<li>The two cream-coloured boxes with white labels are TCI DC MAXI JOLLY HV DALI controllers which generate constant-<strong>current<\/strong> DC outputs suitable for LED downlights<\/li>\n\n\n\n<li>The two grey boxes with silver labels are Ecopac ELED controllers which generate constant-<strong>voltage<\/strong> DC outputs suitable for LED tape striplights\n<ul class=\"wp-block-list\">\n<li>The one marked EH_LD_02 is a 100W, 24V unit for the recessed LED strip in the Entrance Hall\n<ul class=\"wp-block-list\">\n<li>24V is preferred for longer runs of LED tape<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>The one marked GB_LD_01 is a 100W, 12V unit for the LED strip around the dropped-ceiling in the Ground-floor Bathroom (which is silicone-coated for protection from high humidity)<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"782\" src=\"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/wp-content\/uploads\/2021\/09\/DALI-1024x782.png\" alt=\"\" class=\"wp-image-4980\"\/><figcaption class=\"wp-element-caption\">Multiple different DALI-compatible dimmable lighting controllers<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>While KNX is good for controlling many types of building services it&#8217;s not ideal for lighting control. Native KNX dimmers are available but the choice is limited (although improving over time) and they tend to be expensive whereas the alternative &hellip; <a href=\"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/?page_id=5836\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":5829,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5836","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/pages\/5836","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5836"}],"version-history":[{"count":2,"href":"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/pages\/5836\/revisions"}],"predecessor-version":[{"id":5838,"href":"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/pages\/5836\/revisions\/5838"}],"up":[{"embeddable":true,"href":"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/pages\/5829"}],"wp:attachment":[{"href":"https:\/\/www.marshflattsfarm.org.uk\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5836"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}