{"id":18994,"date":"2026-10-12T16:40:13","date_gmt":"2026-10-12T08:40:13","guid":{"rendered":"https:\/\/www.wehopower.com\/news\/24v-power-supply-for-automation-separate-plc-sensor-and-solenoid-demand\/"},"modified":"2026-10-12T16:40:13","modified_gmt":"2026-10-12T08:40:13","slug":"24v-power-supply-for-automation-separate-plc-sensor-and-solenoid-demand","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/ru\/news\/24v-power-supply-for-automation-separate-plc-sensor-and-solenoid-demand\/","title":{"rendered":"24V Power Supply for Automation: Separate PLC, Sensor and Solenoid Demand"},"content":{"rendered":"<p>A <strong>24V power supply for automation<\/strong> may feed a PLC, sensors and solenoid valves, but those loads do not behave as one uniform current demand. A controller can reset during a valve transition even when the arithmetic average looks comfortably below the supply rating. The useful starting point is a branch and operating-state record, not a larger wattage chosen without explanation.<\/p>\n<p>The source-controlled WEHO NDR-120-24 provides the worked product boundary here: 24V, 5A and a documented 120W nominal output. It is a DIN-rail supply, not a complete control system. Its rating does not identify the connected loads, protective devices or acceptance criteria for a particular machine.<\/p>\n<figure><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/03-product-detail-38.png\" alt=\"24V Power Supply for Automation: Separate PLC, Sensor and Solenoid Demand  title=\" width=\"1536\" height=\"1024\" 24v power supply for automation: separate sensor and solenoid demand title=\"\"><figcaption>\u72ec\u7acb\u6280\u672f\u6838\u9a8c\u901a\u8fc7 \u00b7 Original product reference, uniformly resized without repainting the casing, trademark, label or terminals. This is not a new installed application scene.<\/figcaption><\/figure>\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\">\u041e\u0433\u043b\u0430\u0432\u043b\u0435\u043d\u0438\u0435<\/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;\">\u041f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0430\u0442\u044c<\/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\/ru\/news\/24v-power-supply-for-automation-separate-plc-sensor-and-solenoid-demand\/#Divide_the_device_list_into_meaningful_branches\" >Divide the device list into meaningful branches<\/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\/ru\/news\/24v-power-supply-for-automation-separate-plc-sensor-and-solenoid-demand\/#Check_the_voltage_at_the_load_not_only_at_the_supply\" >Check the voltage at the load, not only at the supply<\/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\/ru\/news\/24v-power-supply-for-automation-separate-plc-sensor-and-solenoid-demand\/#Use_the_exact_NDR_mounting_evidence\" >Use the exact NDR mounting evidence<\/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\/ru\/news\/24v-power-supply-for-automation-separate-plc-sensor-and-solenoid-demand\/#Release_the_ordered_revision_not_a_mixed_specification\" >Release the ordered revision, not a mixed specification<\/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\/ru\/news\/24v-power-supply-for-automation-separate-plc-sensor-and-solenoid-demand\/#A_practical_procurement_release\" >A practical procurement release<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.wehopower.com\/ru\/news\/24v-power-supply-for-automation-separate-plc-sensor-and-solenoid-demand\/#Should_actuator_demand_always_be_added_to_PLC_demand\" >Should actuator demand always be added to PLC demand?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.wehopower.com\/ru\/news\/24v-power-supply-for-automation-separate-plc-sensor-and-solenoid-demand\/#Does_a_5A_label_establish_transient_compatibility\" >Does a 5A label establish transient compatibility?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.wehopower.com\/ru\/news\/24v-power-supply-for-automation-separate-plc-sensor-and-solenoid-demand\/#What_information_should_WEHO_receive\" >What information should WEHO receive?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Divide_the_device_list_into_meaningful_branches\"><\/span>Divide the device list into meaningful branches<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Record PLC and communication equipment separately from field sensors and actuators. For every device, retain the manufacturer&#8217;s current information, acceptable input-voltage range and relevant startup behaviour. Do not use the output-switching capacity of a sensor as if it were the sensor&#8217;s own supply current.<\/p>\n<p>Then describe the machine states: power-on, communication establishment, normal production, maximum simultaneous valve operation and fault recovery. Devices that never operate together should not be silently treated as simultaneous; devices that can overlap during transitions should not be excluded because the normal sequence is different.<\/p>\n<table>\n<thead>\n<tr>\n<th>Branch<\/th>\n<th>Information to obtain<\/th>\n<th>Acceptance observation<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>PLC and communications<\/td>\n<td>Startup current and permitted voltage at the input terminals<\/td>\n<td>Controller and network behaviour during transitions<\/td>\n<\/tr>\n<tr>\n<td>\u0414\u0430\u0442\u0447\u0438\u043a\u0438<\/td>\n<td>Actual supply consumption, polarity and signal-interface requirements<\/td>\n<td>Stable readings during actuator switching<\/td>\n<\/tr>\n<tr>\n<td>Solenoids<\/td>\n<td>Coil voltage, pickup\/holding demand and switching arrangement<\/td>\n<td>Pickup without unacceptable shared-rail disturbance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure><img decoding=\"async\" src=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/01-application-a-41.png\" alt=\"24V Power Supply for Automation: Separate PLC, Sensor and Solenoid Demand  title=\" width=\"1536\" height=\"1024\" 24v power supply for automation: separate sensor and solenoid demand title=\"\"><figcaption>\u72ec\u7acb\u6280\u672f\u6838\u9a8c\u901a\u8fc7 \u00b7 Isolated auxiliary-branch layout and terminal-access assembly illustration beside a pneumatic tray-stop station. The exact source-labelled NDR is rear-mounted; all terminals remain empty. No energized compatibility or completed test is claimed.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Check_the_voltage_at_the_load_not_only_at_the_supply\"><\/span>Check the voltage at the load, not only at the supply<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A good terminal reading at the power supply does not prove the same voltage reaches a remote device. Review conductor length, both outgoing and return paths, connections and the actual simultaneous current. Set the measurement points in advance so the test record can be reproduced.<\/p>\n<p>A shared return path can also complicate interpretation. Do not redraw an application with arbitrary wires or imply that a signal reference can be connected anywhere. The equipment designer must define the return, protective earthing and interface arrangement. A product photograph is identity evidence, not an approved wiring diagram.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Use_the_exact_NDR_mounting_evidence\"><\/span>Use the exact NDR mounting evidence<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The controlled mechanical sheet records a 40mm rail-axis width, 125.2mm upright height and 113.5mm front-to-back depth. Those axes matter when allocating panel space. Cable bending room, terminal access and thermal clearance are additional requirements, not included in the body envelope.<\/p>\n<p>The original specimen is a ventilated metal enclosure. Its mounting relationship is rear-to-rail; the front face must not be attached to the rail in a generated scene. Nor should a plastic generic housing or an invented fan be substituted. The surrounding equipment needs enough separation to make the installation and maintenance relationship credible.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/02-application-b-39.png\" alt=\"24V Power Supply for Automation: Separate PLC, Sensor and Solenoid Demand  title=\" width=\"1536\" height=\"1024\" 24v power supply for automation: separate sensor and solenoid demand title=\"\"><figcaption>\u72ec\u7acb\u6280\u672f\u6838\u9a8c\u901a\u8fc7 \u00b7 Different rotary-fixture service bay: pre-termination rear-rail mounting and access illustration. Exact source-labelled product and naturally scaled cabinet context, not a working branch or verified machine acceptance.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Release_the_ordered_revision_not_a_mixed_specification\"><\/span>Release the ordered revision, not a mixed specification<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The physical input label and documentary operating-range text differ in the available sources. The public product page also contains inconsistent case and input descriptions. This guide uses the supported 24V\/5A output boundary and does not turn conflicting input language into an installation promise. Obtain a controlled electrical sheet for the ordered unit before energised acceptance.<\/p>\n<p>Built-in protection is not evidence of selective downstream protection. A fault on one branch may affect other loads unless the distribution design and actual protective arrangement have been evaluated. Likewise, an ordinary NDR supply is not automatically a battery charger or UPS because a cabinet contains a battery elsewhere.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/04-engineering-context-42.png\" alt=\"24V Power Supply for Automation: Separate PLC, Sensor and Solenoid Demand  title=\" width=\"1536\" height=\"1024\" 24v power supply for automation: separate sensor and solenoid demand title=\"\"><figcaption>\u72ec\u7acb\u6280\u672f\u6838\u9a8c\u901a\u8fc7 \u00b7 Original editorial evidence map, not a circuit diagram, measured result or compatibility approval. Model\/output and mechanical envelope are source-bound; actual device requirements remain to be obtained.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"A_practical_procurement_release\"><\/span>A practical procurement release<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Attach the branch table, worst-case simultaneous state, input conditions, panel layout and intended restart test to the enquiry. Record the exact model and revision on the drawing and purchase order. During acceptance, compare remote voltage and controller behaviour at the defined points, rather than checking only that the supply indicator lights.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Should_actuator_demand_always_be_added_to_PLC_demand\"><\/span>Should actuator demand always be added to PLC demand?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Use the real operating sequence, including overlaps and fault states. Do not invent diversity that the control program cannot guarantee.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_a_5A_label_establish_transient_compatibility\"><\/span>Does a 5A label establish transient compatibility?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. Startup and switching behaviour require exact load information and a controlled system test.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_information_should_WEHO_receive\"><\/span>What information should WEHO receive?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The device list and operating states, site input and enclosure conditions. That supports a specific model discussion rather than an unqualified \u201c24V automation\u201d recommendation.<\/p>\n<p><a href=\"https:\/\/www.wehopower.com\/ru\/product\/ndr-dinrail-120w-ac-to-dc-single-output-switching-power-supply\/\">Official NDR-120 product reference<\/a>; use the exact original and mechanical sheet in this draft for physical comparison.<\/p>","protected":false},"excerpt":{"rendered":"<p>Build a branch-by-branch load record before selecting the source-controlled NDR-120-24 for an automation panel.<\/p>","protected":false},"author":2,"featured_media":18990,"parent":0,"menu_order":102,"comment_status":"","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[149,284],"class_list":["post-18994","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\/ru\/wp-json\/wp\/v2\/news\/18994","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/ru\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/ru\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/ru\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/ru\/wp-json\/wp\/v2\/comments?post=18994"}],"version-history":[{"count":0,"href":"https:\/\/www.wehopower.com\/ru\/wp-json\/wp\/v2\/news\/18994\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/ru\/wp-json\/wp\/v2\/media\/18990"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/ru\/wp-json\/wp\/v2\/media?parent=18994"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/ru\/wp-json\/wp\/v2\/news_category?post=18994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}