{"id":7729,"date":"2026-07-08T12:48:29","date_gmt":"2026-07-08T11:48:29","guid":{"rendered":"https:\/\/morssmitt.leenweb.nl\/?p=7729"},"modified":"2026-07-08T12:59:29","modified_gmt":"2026-07-08T11:59:29","slug":"high-density-relays-modules","status":"publish","type":"post","link":"https:\/\/morssmitt.com\/nl\/high-density-relays-modules\/","title":{"rendered":"High Density Relay Modules"},"content":{"rendered":"
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High Density Relay Modules for locomotive\u2019s auxiliary power circuits<\/h4>\n\n\n\n
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Mors Smitt has delivered 40 High Density Relay Modules (HDRM) to an important European train manufacturer: 20 modules for safety D relay and 20 modules for control.<\/p>\n\n\n\n

In the coming 2 years we expect 60 more panels. These onboard relays panels will be implemented in the new generation locomotive (for passenger and freight transport), designed with both an electric and a diesel-electric drive.<\/p>\n\n\n\n

That means that it can be used on both electrified and non-electrified railway lines. The locomotives are built in Europe.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

Challenges<\/h4>\n\n\n\n

If all or even a few motors are started simultaneously, it would cause a tremendous demand on the power supply in terms of current drawn. This might cause the power supply to trip.<\/p>\n\n\n\n

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Solution<\/h4>\n\n\n\n

To prevent such a situation, starting of some of the motors is staggered which prevents heavy load currents being drawn. The sequential starting of auxiliary machines is done with relays logic.<\/p>\n\n\n\n

Each locomotive will be equipped with two HDRM panels:<\/p>\n\n\n\n

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  • One modular panel with up to a staggering 90 D6-U safety relays, freely configurable, with 540 contacts.<\/li>\n<\/ul>\n\n\n\n
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    • A second modular panel with 54 D-U standard relays with 216 C\/O contacts.\u00a0<\/li>\n<\/ul>\n\n\n\n
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      General features<\/h4>\n\n\n\n
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      • All contacts are backside connected. The train wiring is connected through connectors with keying code, ensuring easy and correct installation and replacement.<\/li>\n\n\n\n
      • Earth connection of the panel is carried out via hinges of the panel.<\/li>\n\n\n\n
      • Wiring made in harness form, each wire is provided with unique coding.<\/li>\n\n\n\n
      • Easy marshalling \/ cross wiring inside the boxes enables last minute changes to the circuitry.<\/li>\n\n\n\n
      • Connections are wired, not on PCB, enabling 10 A continuous current on ALL circuits.<\/li>\n\n\n\n
      • The relays are plugged in a special socket, making it fast and easy to exchange, even to change into a timer or latching relay.<\/li>\n<\/ul>\n\n\n\n

        Why Mors Smitt<\/h4>\n\n\n\n

        These HDRM panels are fully designed, manufactured and tested by Mors Smitt.
        After manufacturing all units are 100% functional tested using our sophisticated test computer:<\/p>\n\n\n\n

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        • Point-to-point wired connections<\/li>\n\n\n\n
        • 1000 VDC insulation test on all connections and wiring<\/li>\n\n\n\n
        • 100% fully functional test according schematics<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

          High Density Relay Modules for locomotive\u2019s auxiliary power circuits Mors Smitt has delivered 40 High Density Relay Modules (HDRM) to an important European train manufacturer: 20 modules for safety D relay and 20 modules for control. In the coming 2 years we expect 60 more panels. These onboard relays panels will be implemented in the […]<\/p>\n","protected":false},"author":3,"featured_media":7732,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_breakdance_hide_in_design_set":false,"_breakdance_tags":"","footnotes":""},"categories":[127],"tags":[],"class_list":["post-7729","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-project-references"],"acf":[],"_links":{"self":[{"href":"https:\/\/morssmitt.com\/nl\/wp-json\/wp\/v2\/posts\/7729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/morssmitt.com\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/morssmitt.com\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/morssmitt.com\/nl\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/morssmitt.com\/nl\/wp-json\/wp\/v2\/comments?post=7729"}],"version-history":[{"count":0,"href":"https:\/\/morssmitt.com\/nl\/wp-json\/wp\/v2\/posts\/7729\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/morssmitt.com\/nl\/wp-json\/wp\/v2\/media\/7732"}],"wp:attachment":[{"href":"https:\/\/morssmitt.com\/nl\/wp-json\/wp\/v2\/media?parent=7729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/morssmitt.com\/nl\/wp-json\/wp\/v2\/categories?post=7729"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/morssmitt.com\/nl\/wp-json\/wp\/v2\/tags?post=7729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}