{"id":18858,"date":"2026-10-10T17:08:49","date_gmt":"2026-10-10T09:08:49","guid":{"rendered":"https:\/\/www.wehopower.com\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/"},"modified":"2026-10-10T17:08:49","modified_gmt":"2026-10-10T09:08:49","slug":"24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/","title":{"rendered":"24V 10A DIN-Rail Power Supply: Audit Relay, Sensor and Valve Loads by Machine State"},"content":{"rendered":"<p class=\"standfirst\">A 24 V panel rarely has just one load. Relays, sensors, control electronics and valve coils can draw different currents in different machine states. Before approving a 24V 10A DIN-rail power supply, build a state-based load record rather than adding a few convenient nominal numbers.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Basculer<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Start_with_the_accepted_supply_and_the_actual_branch\" >Start with the accepted supply and the actual branch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Create_one_record_for_each_connected_device\" >Create one record for each connected device<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Sum_real_machine_states_not_the_longest_parts_list\" >Sum real machine states, not the longest parts list<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Check_the_supply_output_and_the_remote_load_separately\" >Check the supply output and the remote load separately<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Keep_revision_differences_visible_before_cabinet_fit_approval\" >Keep revision differences visible before cabinet fit approval<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#What_to_send_with_a_supplier_or_internal_review\" >What to send with a supplier or internal review<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Frequently_asked_questions\" >Frequently asked questions<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Does_a_10_A_nameplate_mean_every_panel_can_use_10_A_continuously\" >Does a 10 A nameplate mean every panel can use 10 A continuously?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Should_I_add_every_relay_and_valve_current_together\" >Should I add every relay and valve current together?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Does_the_relay_contact_rating_belong_in_the_coil-current_total\" >Does the relay contact rating belong in the coil-current total?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Why_measure_at_a_remote_load_as_well_as_at_the_supply\" >Why measure at a remote load as well as at the supply?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Which_dimensions_should_I_use_when_the_public_page_and_drawing_disagree\" >Which dimensions should I use when the public page and drawing disagree?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.wehopower.com\/fr\/news\/24v-10a-din-rail-power-supply-audit-relay-sensor-and-valve-loads-by-machine-state\/#Are_these_verified_customer-installation_photographs\" >Are these verified customer-installation photographs?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Start_with_the_accepted_supply_and_the_actual_branch\"><\/span>Start with the accepted supply and the actual branch<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Le <a href=\"https:\/\/www.wehopower.com\/fr\/product\/ndr-dinrail-240w-ac-to-dc-single-output-switching-power-supply\/\">WEHO NDR-240 product table<\/a> identifies the NDR-240-24 variant with a nominal 24 V, 10 A output. The retained authentic sample also reads NDR-240-24, with INPUT:100-240VAC 2.8A 50\/60Hz and OUTPUT:24V followed by the original direct-current graphic and 10A. These are specimen markings, not proof that every cabinet, ambient condition or input situation can support a continuous 10 A branch.<\/p>\n<p>Keep the order-applicable specification and installation requirements with the audit. Confirm the actual incoming supply, accepted output setting, enclosure environment and branch arrangement before deciding how much output current is usable. Do not transfer another NDR variant\u2019s rating or assume that a family prefix is a load approval.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/01-application-a-12.png?quality=85&strip=all\" alt=\"24V 10A DIN-Rail Power Supply: Audit Relay, Sensor and Valve Loads by Machine State  title=\" width=\"1536\" height=\"1024\" 24v 10a din-rail power supply: audit sensor and valve loads by machine state title =\"\"><\/p>\n<p class=\"caption-note\">Illustrative heat-exchanger control bay: the NDR-240-24 is rear-DIN-mounted in a separate protected electrical compartment serving a conditional 24 V control branch. The adjoining instruments and valve equipment establish the engineering context; no pictured device current or tested skid-load result is claimed.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Create_one_record_for_each_connected_device\"><\/span>Create one record for each connected device<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Use the actual device model and its manufacturer\u2019s current data. Separate a relay coil from whatever its contacts switch. Record a sensor\u2019s supply demand separately from the load on an output channel. For a solenoid valve, identify the coil variant, energization state and any separately documented pull-in or reduced-hold behavior; do not assume that all coils have the same demand. A valve or sensor icon on a drawing is not a current value.<\/p>\n<p>Include control-board consumption, interface modules and other loads that remain powered while the machine is idle. If a current value is unavailable, mark that row as unresolved and obtain the relevant device evidence or a qualified measurement. An unresolved row must not silently become zero.<\/p>\n<table>\n<thead>\n<tr>\n<th>Audit field<\/th>\n<th>What belongs in the record<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Identity and branch<\/td>\n<td>Exact load model, supply voltage, terminal or branch reference and return path<\/td>\n<\/tr>\n<tr>\n<td>Operating-state demand<\/td>\n<td>Documented idle, active and switching demand, including the conditions and units<\/td>\n<\/tr>\n<tr>\n<td>Simultaneous operation<\/td>\n<td>Which loads are energized together in each real machine state<\/td>\n<\/tr>\n<tr>\n<td>Evidence and uncertainty<\/td>\n<td>Manufacturer document revision, measurement conditions and unresolved values<\/td>\n<\/tr>\n<tr>\n<td>Acceptance basis<\/td>\n<td>Order-linked supply limits and the equipment builder\u2019s approved design requirements<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Sum_real_machine_states_not_the_longest_parts_list\"><\/span>Sum real machine states, not the longest parts list<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>For each state, add the currents of the loads that actually coincide: the continuously powered group plus the group energized in that state. Evaluate startup, normal operation, actuator transitions, stop and any other state relevant to the equipment sequence. A short transient and a continuous draw are different observations; one must not be used as evidence for the other.<\/p>\n<p>This is not an invitation to apply an arbitrary diversity factor. An interlock or timing sequence only removes simultaneous demand when it is genuinely part of the accepted control design. Conversely, simply adding every installed coil as though all operate continuously may obscure which state really drives the design. Keep the sequence assumptions visible so that a later PLC-program or device change triggers a new audit.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/02-application-b-12.png?quality=85&strip=all\" alt=\"24V 10A DIN-Rail Power Supply: Audit Relay, Sensor and Valve Loads by Machine State  title=\" width=\"1536\" height=\"1024\" 24v 10a din-rail power supply: audit sensor and valve loads by machine state title =\"\"><\/p>\n<p class=\"caption-note\">A different pneumatic assembly-cell control bay illustrates another conditional 24 V auxiliary branch. The supply position, supported source view, adjacent devices and machine context differ from the heat-exchanger scene. It is a source-referenced illustration, not evidence that an unnamed valve manifold has passed a load test.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Check_the_supply_output_and_the_remote_load_separately\"><\/span>Check the supply output and the remote load separately<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A satisfactory sum does not prove that every load sees an acceptable voltage during a switching event. The branch circuit also has conductors, terminals, protective devices and return paths. Record voltage and current at the points relevant to the actual question, using a qualified measurement setup. A reading at the supply terminals is not automatically the same reading at a remote coil or controller.<\/p>\n<p>Compare the completed evidence with the accepted supply and load requirements. This article deliberately supplies no invented current budget, spare-current percentage, cable size, protective-device setting or universal switching-response limit. Those decisions require the actual equipment design and applicable installation rules; they cannot be derived from the product\u2019s 10 A nameplate alone.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/03-product-detail-12.png?quality=85&strip=all\" alt=\"24V 10A DIN-Rail Power Supply: Audit Relay, Sensor and Valve Loads by Machine State  title=\" width=\"1536\" height=\"1024\" 24v 10a din-rail power supply: audit sensor and valve loads by machine state title =\"\"><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Keep_revision_differences_visible_before_cabinet_fit_approval\"><\/span>Keep revision differences visible before cabinet fit approval<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The retained complete supplier mechanical drawing for this sample shows a 63 mm front width, 125.2 mm upright height and 113.5 mm front-to-rear depth, with a real rear DIN hook and spring latch. That drawing controls the source-referenced illustration. The current public page separately lists a conflicting 125.2 \u00d7 125.2 \u00d7 100 mm tuple. The disagreement is not resolved here, and the illustration must not be presented as proof of a universal drop-in fit. Confirm the order-applicable drawing with the supplier before accepting cabinet space, clearance or replacement compatibility.<\/p>\n<p>The physical sample also prints a 24\u201328 V adjustment legend, whereas the public table describes a different adjustment range. Preserving that genuine printed legend does not authorize a guaranteed delivered adjustment range. Generic input, environmental and withstand-voltage statements differ across the retained documents too; they are not combined into a more favorable performance specification. The article\u2019s verified product reference remains the exact nominal NDR-240-24 specimen and a load-audit method, not a certification or installation approval.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/04-engineering-context-16.png?quality=85&strip=all\" alt=\"24V 10A DIN-Rail Power Supply: Audit Relay, Sensor and Valve Loads by Machine State  title=\" width=\"1536\" height=\"1024\" 24v 10a din-rail power supply: audit sensor and valve loads by machine state title =\"\"><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_to_send_with_a_supplier_or_internal_review\"><\/span>What to send with a supplier or internal review<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Send the exact NDR-240-24 identifier, accepted document revisions, incoming supply conditions and the state-based load sheet. Include the device-model evidence, unresolved rows, observed switching behavior and remote-load observations that matter to the equipment requirement. State any cabinet-fit or revision disagreement explicitly. This gives a reviewer something testable; \u201c24 V, about ten amps\u201d does not.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_asked_questions\"><\/span>Frequently asked questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Does_a_10_A_nameplate_mean_every_panel_can_use_10_A_continuously\"><\/span>Does a 10 A nameplate mean every panel can use 10 A continuously?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. Confirm the accepted full-model conditions and actual installation. The nameplate alone does not close an input, thermal, branch or load-compatibility review.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Should_I_add_every_relay_and_valve_current_together\"><\/span>Should I add every relay and valve current together?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Build documented machine states and add the loads that coincide in each state. Do not invent diversity, omit unknown rows or treat a transient as a continuous value.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_the_relay_contact_rating_belong_in_the_coil-current_total\"><\/span>Does the relay contact rating belong in the coil-current total?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. Identify the actual supply demand of the coil or control device separately from what its contacts switch.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Why_measure_at_a_remote_load_as_well_as_at_the_supply\"><\/span>Why measure at a remote load as well as at the supply?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>They are different points in the branch circuit. The question may concern the load\u2019s observed voltage during a real transition, not just the supply-terminal reading.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Which_dimensions_should_I_use_when_the_public_page_and_drawing_disagree\"><\/span>Which dimensions should I use when the public page and drawing disagree?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Do not choose silently. Preserve both references and obtain the controlled drawing applicable to the actual order before approving fit.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Are_these_verified_customer-installation_photographs\"><\/span>Are these verified customer-installation photographs?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. They are source-referenced application illustrations. Product identity, visible mounting and wiring are reviewed against genuine sources, but the scenes do not establish a customer test, energized-installation approval or human publication approval.<\/p>","protected":false},"excerpt":{"rendered":"<p>Build an evidence-evidence-based 24 V panel load record from exact device models, coincident machine states and observed branch behavior, with revision differences kept visible.<\/p>","protected":false},"author":2,"featured_media":18854,"parent":0,"menu_order":11,"comment_status":"","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[149,284],"class_list":["post-18858","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-blog","news_category-product-articles","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/news\/18858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/comments?post=18858"}],"version-history":[{"count":0,"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/news\/18858\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/media\/18854"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/media?parent=18858"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/news_category?post=18858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}