{"id":17264,"date":"2026-09-07T08:00:00","date_gmt":"2026-09-07T00:00:00","guid":{"rendered":"https:\/\/www.wehopower.com\/?post_type=news&p=17264"},"modified":"2026-09-07T08:00:00","modified_gmt":"2026-09-07T00:00:00","slug":"vending-machine-power-supply-voltage-selection","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/th\/news\/vending-machine-power-supply-voltage-selection\/","title":{"rendered":"Vending Machine Power Supply: Voltage and Selection"},"content":{"rendered":"<p class=\"weho-last-updated\" style=\"text-align:center;color:#E60013\">Last Updated: 2026-09-05<\/p>\n<blockquote class=\"weho-quick-answer\">\n<p>vending machine power supply selection begins with a complete rail-by-rail load list for controllers, sensors, displays, payment devices, fans, motors, and actuators. Confirm each voltage, calculate the maximum simultaneous steady and peak demand, include wiring loss and thermal derating, and choose a documented single- or multi-output supply with suitable protection and service access.<\/p>\n<\/blockquote>\n<figure class=\"weho-blog-image weho-blog-hero\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/01-hero-18.png?quality=85&strip=all\" alt=\"WEHO D-60B dual-output power supply inside a vending machine service compartment\" title=\"WEHO D-60B dual-output power supply inside a vending machine service compartment\" width=\"1536\" height=\"1024\" class=\"alignnone size-full wp-image-17259\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/01-hero-18.png?quality=85&strip=all 1536w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/01-hero-18-300x200.png?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/01-hero-18-1024x683.png?quality=85&strip=all 1024w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/01-hero-18-768x512.png?quality=85&strip=all 768w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/01-hero-18-18x12.png?quality=85&strip=all 18w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><\/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\">Table of Contents<\/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;\">Toggle<\/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\/th\/news\/vending-machine-power-supply-voltage-selection\/#Select_a_vending_machine_power_supply_from_a_rail-by-rail_load_map\" >Select a vending machine power supply from a rail-by-rail load map<\/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\/th\/news\/vending-machine-power-supply-voltage-selection\/#Map_every_vending_machine_voltage_rail\" >Map every vending machine voltage rail<\/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\/th\/news\/vending-machine-power-supply-voltage-selection\/#Calculate_steady_and_peak_demand\" >Calculate steady and peak demand<\/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\/th\/news\/vending-machine-power-supply-voltage-selection\/#Match_regulation_protection_and_electrical_architecture\" >Match regulation protection and electrical architecture<\/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\/th\/news\/vending-machine-power-supply-voltage-selection\/#Plan_mounting_cooling_and_service_access\" >Plan mounting cooling and service access<\/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\/th\/news\/vending-machine-power-supply-voltage-selection\/#Commission_the_machine_under_real_operating_sequences\" >Commission the machine under real operating sequences<\/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\/th\/news\/vending-machine-power-supply-voltage-selection\/#Diagnose_resets_and_failed_vending_cycles\" >Diagnose resets and failed vending cycles<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.wehopower.com\/th\/news\/vending-machine-power-supply-voltage-selection\/#FAQs\" >FAQs<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.wehopower.com\/th\/news\/vending-machine-power-supply-voltage-selection\/#What_voltage_does_a_vending_machine_power_supply_use\" >What voltage does a vending machine power supply use?<\/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\/th\/news\/vending-machine-power-supply-voltage-selection\/#Can_one_dual-output_power_supply_run_both_24V_and_5V_loads\" >Can one dual-output power supply run both 24V and 5V loads?<\/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\/th\/news\/vending-machine-power-supply-voltage-selection\/#Why_does_a_vending_machine_reset_when_a_motor_starts\" >Why does a vending machine reset when a motor starts?<\/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\/th\/news\/vending-machine-power-supply-voltage-selection\/#How_much_spare_capacity_should_a_vending_machine_supply_have\" >How much spare capacity should a vending machine supply have?<\/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\/th\/news\/vending-machine-power-supply-voltage-selection\/#Can_a_higher-wattage_supply_replace_the_original_vending_machine_supply\" >Can a higher-wattage supply replace the original vending machine supply?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.wehopower.com\/th\/news\/vending-machine-power-supply-voltage-selection\/#What_should_be_checked_before_replacing_a_vending_machine_power_supply\" >What should be checked before replacing a vending machine power supply?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.wehopower.com\/th\/news\/vending-machine-power-supply-voltage-selection\/#Key_Takeaways\" >Key Takeaways<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.wehopower.com\/th\/news\/vending-machine-power-supply-voltage-selection\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Select_a_vending_machine_power_supply_from_a_rail-by-rail_load_map\"><\/span>Select a vending machine power supply from a rail-by-rail load map<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A vending machine is a group of electrical subsystems, not one uniform load. Before selecting a supply, identify the input source and every DC rail used by the controller, payment equipment, display, sensors, lighting, fans, motors, solenoids, heaters, and communication hardware. Confirm values from the machine schematic, device labels, and current product documentation.<\/p>\n<p>Create a load table with voltage, steady current, startup or peak current, duty cycle, and simultaneous-operation group for every device. This reveals whether the machine needs one regulated output, a dual-output unit, or separate supplies. Never infer a connector pinout or rail voltage from wire color alone.<\/p>\n<p>The vending machine power supply must maintain each rail during the most demanding permitted sequence. That sequence may occur during startup, product delivery, refrigeration control, bill validation, card communication, or fault recovery. Review the machine logic instead of simply adding average currents.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Map_every_vending_machine_voltage_rail\"><\/span>Map every vending machine voltage rail<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure class=\"weho-blog-image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/02-technical-diagram-19.png?quality=85&strip=all\" alt=\"Vending machine power supply architecture separating 24V actuator loads and 5V control loads\" title=\"Vending machine power supply architecture separating 24V actuator loads and 5V control loads\" width=\"1536\" height=\"1024\" class=\"alignnone size-full wp-image-17260\" loading=\"lazy\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/02-technical-diagram-19.png?quality=85&strip=all 1536w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/02-technical-diagram-19-300x200.png?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/02-technical-diagram-19-1024x683.png?quality=85&strip=all 1024w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/02-technical-diagram-19-768x512.png?quality=85&strip=all 768w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/02-technical-diagram-19-18x12.png?quality=85&strip=all 18w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n<p>Many vending designs use a higher DC rail for motors, fans, locks, and actuators and a lower rail for logic, sensors, or display electronics. The exact voltages vary. Some devices include local conversion, while others depend directly on the central supply. Document every rail and whether returns are common or isolated according to the approved schematic.<\/p>\n<p>For each rail, calculate steady power:<\/p>\n<p><code>Rail power (W) = rail voltage (V) \u00d7 steady current (A)<\/code><\/p>\n<p>Then add the simultaneous startup demand separately. For a multi-output supply, verify both the individual rail limits and any combined-power limit. A unit can remain below its total wattage while one output is overloaded. Regulation specifications may also depend on minimum loading or the balance between outputs, so consult the exact datasheet.<\/p>\n<p>The <a href=\"https:\/\/www.wehopower.com\/product\/60w-power-switching-dual-switch-output-power-supply-daul-ac-dc-led-power-supply\/\">WEHO D-60 dual-output switching power supply page<\/a> provides a product-family reference for equipment needing two documented DC outputs. Confirm the exact D-60 variant, output ratings, combined limits, mechanical dimensions, terminals, and adjustment information before selection.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Calculate_steady_and_peak_demand\"><\/span>Calculate steady and peak demand<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure class=\"weho-blog-image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/03-product-18.png?quality=85&strip=all\" alt=\"WEHO D-60B dual-output supply on a disconnected vending equipment inspection bench\" title=\"WEHO D-60B dual-output supply on a disconnected vending equipment inspection bench\" width=\"1536\" height=\"1024\" class=\"alignnone size-full wp-image-17261\" loading=\"lazy\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/03-product-18.png?quality=85&strip=all 1536w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/03-product-18-300x200.png?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/03-product-18-1024x683.png?quality=85&strip=all 1024w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/03-product-18-768x512.png?quality=85&strip=all 768w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/03-product-18-18x12.png?quality=85&strip=all 18w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n<p>List which devices are continuously active, which cycle, and which can start together. Control boards and communication modules may draw relatively stable current, while vend motors, pumps, fans, locks, and solenoids can create short peaks. A slow multimeter may not capture the minimum rail voltage during a fast event; suitable logging or oscilloscope measurement may be required by qualified personnel.<\/p>\n<p>Test realistic operating sequences: cold startup, simultaneous lighting and payment activity, product dispensing, door unlocking, fan or compressor start where applicable, and recovery after an interruption. If several motors are intentionally sequenced, verify that firmware and fault behavior cannot start them together.<\/p>\n<p>Include wiring loss. Measure voltage at the sensitive controller and at the farthest actuator during the event. If the supply output remains stable but the load voltage falls, inspect conductor size, connectors, branch protection, and return paths. Increasing the central output voltage is not a safe substitute for repairing excessive distribution loss.<\/p>\n<p>Apply the supply manufacturer&#8217;s derating rules for input voltage, ambient temperature, mounting, and enclosure conditions. A vending machine in direct sun or beside refrigeration equipment can create a much warmer service compartment than the surrounding room.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Match_regulation_protection_and_electrical_architecture\"><\/span>Match regulation protection and electrical architecture<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Sensitive logic requires a stable rail, while electromechanical loads create transients. Decide whether shared distribution is acceptable or whether separate branches, filters, or supplies are needed. Use protection and suppression specified by the controller, motor, solenoid, and machine designer. Do not add unverified capacitors or suppression parts because they may alter startup, release time, or fault clearing.<\/p>\n<p>Coordinate branch protection with the smallest conductor and connector in each circuit. Label rails and returns clearly so a 24V branch cannot be confused with a 5V branch during service. Confirm protective earth, enclosure bonding, and AC input protection according to the machine design and applicable requirements.<\/p>\n<p>When replacing a supply, compatibility includes output voltages, current on every rail, peak response, regulation, ripple limits, connectors, pinout, mechanical mounting, airflow, grounding, and protection. A physically fitting unit with more total watts may still be electrically unsuitable.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Plan_mounting_cooling_and_service_access\"><\/span>Plan mounting cooling and service access<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure class=\"weho-blog-image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/04-installation-18.png?quality=85&strip=all\" alt=\"WEHO D-60B power supply mounted on a vending machine service backplate\" title=\"WEHO D-60B power supply mounted on a vending machine service backplate\" width=\"1536\" height=\"1024\" class=\"alignnone size-full wp-image-17262\" loading=\"lazy\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/04-installation-18.png?quality=85&strip=all 1536w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/04-installation-18-300x200.png?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/04-installation-18-1024x683.png?quality=85&strip=all 1024w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/04-installation-18-768x512.png?quality=85&strip=all 768w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/04-installation-18-18x12.png?quality=85&strip=all 18w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n<p>Install the supply in its documented orientation and keep ventilation openings clear. Provide enough space to inspect terminals and remove the unit without disturbing unrelated wiring. Keep paper dust, spilled product, condensation, and cleaning liquid away from open-frame or enclosed supplies that are not designed for such exposure.<\/p>\n<p>Secure the unit to a rigid backplate using its intended mounting points. Cable weight must not pull on terminals, and conductors need strain relief. Use documented conductor preparation and terminal torque. A supply that hangs from wires or sits loosely on a shelf can suffer vibration damage and unsafe connections.<\/p>\n<p>Check air temperature at the supply location with the service door closed. Verify fans and filters and consider heat from displays, refrigeration electronics, chargers, and lighting. The <a href=\"https:\/\/www.wehopower.com\/product_category\/enclosed-switching-power-supply\/\">WEHO enclosed switching power supply category<\/a> can be used to compare product families after the electrical and environmental requirements are known.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Commission_the_machine_under_real_operating_sequences\"><\/span>Commission the machine under real operating sequences<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure class=\"weho-blog-image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/05-application-18.png?quality=85&strip=all\" alt=\"Technician servicing a vending machine powered by an integrated WEHO dual-output supply\" title=\"Technician servicing a vending machine powered by an integrated WEHO dual-output supply\" width=\"1536\" height=\"1024\" class=\"alignnone size-full wp-image-17263\" loading=\"lazy\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/05-application-18.png?quality=85&strip=all 1536w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/05-application-18-300x200.png?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/05-application-18-1024x683.png?quality=85&strip=all 1024w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/05-application-18-768x512.png?quality=85&strip=all 768w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/05-application-18-18x12.png?quality=85&strip=all 18w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n<p>Before energization, verify rail labels, polarity, protective earth, branch protection, connectors, and mechanical security. Power the machine in a controlled condition and check each rail before enabling sensitive loads. Then run the complete vending sequence while recording rail voltage and current.<\/p>\n<p>Repeat tests after the compartment reaches its normal temperature. Confirm that the payment system does not reset, the controller remains stable, actuators complete their stroke, and no connector or terminal develops abnormal heat. Simulate permitted fault recovery and power restoration because these states may energize loads in a different order.<\/p>\n<p>Keep the accepted readings with the service record: AC input, DC rail voltages, peak and steady current, ambient temperature, and the tested sequence. This baseline makes later diagnosis faster and discourages unnecessary supply replacement.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Diagnose_resets_and_failed_vending_cycles\"><\/span>Diagnose resets and failed vending cycles<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>If the controller resets when a motor or solenoid starts, measure voltage at the controller during that exact event. Check for a shared return path, loose connector, excessive cable drop, branch-device resistance, and current limiting. A worn motor or jammed mechanism can draw more current and make a healthy supply appear defective.<\/p>\n<p>If one rail is missing, isolate power and verify the correct input, connector seating, branch protection, and load resistance using the approved service procedure. For a dual-output unit, do not assume both outputs failed together. Separate the rail fault from the connected load before replacing parts.<\/p>\n<p>Burned odor, damaged insulation, liquid ingress, severe discoloration, or repeated protection cycling requires removal from service. Mains-side work and internal supply repair should be performed only by qualified personnel under an authorized procedure.<\/p>\n<p>For product matching, send the machine schematic, rail table, peak sequence, ambient temperature, mounting space, and photos of the existing label and connectors to [sarayu@chnwh.com](mailto:sarayu@chnwh.com), or use the <a href=\"https:\/\/www.wehopower.com\/contact\/\">WEHO contact page<\/a>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"weho-visible-faq\">\n<h3><span class=\"ez-toc-section\" id=\"What_voltage_does_a_vending_machine_power_supply_use\"><\/span>What voltage does a vending machine power supply use?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>There is no single vending-machine voltage. One machine may use 24V for motors and actuators, 12V for accessories, and 5V for logic or sensors. Read the machine schematic and each load label before selecting or replacing a supply.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_one_dual-output_power_supply_run_both_24V_and_5V_loads\"><\/span>Can one dual-output power supply run both 24V and 5V loads?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Yes, if the exact model provides both rails and each rail meets its current, regulation, protection, and shared-return requirements. Check combined-power limits as well as the individual output ratings in the datasheet.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Why_does_a_vending_machine_reset_when_a_motor_starts\"><\/span>Why does a vending machine reset when a motor starts?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Motor or solenoid startup current can pull a rail below the controller&#8217;s acceptable voltage. Long conductors, loose terminals, inadequate output capacity, or poor load separation can worsen the dip. Measure voltage at the controller during the event.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_much_spare_capacity_should_a_vending_machine_supply_have\"><\/span>How much spare capacity should a vending machine supply have?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Use an engineered margin based on measured peak demand, ambient temperature, duty cycle, aging, and the manufacturer&#8217;s derating curve. A fixed percentage is not a substitute for checking the exact supply and the machine&#8217;s worst operating sequence.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_a_higher-wattage_supply_replace_the_original_vending_machine_supply\"><\/span>Can a higher-wattage supply replace the original vending machine supply?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Only when voltage, rail arrangement, regulation, peak-current behavior, dimensions, mounting, connectors, grounding, cooling, and protection are compatible. More wattage alone does not make a replacement suitable.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_should_be_checked_before_replacing_a_vending_machine_power_supply\"><\/span>What should be checked before replacing a vending machine power supply?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Record the input rating, every output voltage and current, combined-power limits, connector pinout, mounting dimensions, grounding, fan or airflow needs, and the failure symptom. Isolate mains power and use qualified service personnel for replacement.<\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Key_Takeaways\"><\/span>Key Takeaways<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Identify every voltage rail and connected load from verified documentation.<\/li>\n<li>Check individual and combined limits when using a dual-output supply.<\/li>\n<li>Model the worst vending sequence, including motor and solenoid startup current.<\/li>\n<li>Measure voltage at sensitive controllers and distant loads during actual events.<\/li>\n<li>Match connectors, pinout, grounding, cooling, mounting, and protection\u2014not wattage alone.<\/li>\n<li>Record commissioning measurements so future service can separate supply and load faults.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Reliable vending power begins with a rail map and a realistic operating sequence. Calculate each output independently, include transient loads and thermal derating, then confirm the design with measurements at the actual devices. A compatible vending machine power supply should fit the electrical architecture, mechanical installation, environment, and service process as one complete system.<\/p>\n<div class=\"weho-article-cta\">\n<p>Review the <a href=\"https:\/\/www.wehopower.com\/product_category\/enclosed-switching-power-supply\/\">relevant WEHO product category<\/a>, email <a href=\"mailto:sarayu@chnwh.com\">sarayu@chnwh.com<\/a>, or <a href=\"https:\/\/www.wehopower.com\/contact\/\">contact WEHO<\/a> with the input voltage, output load, ambient temperature, and installation details.<\/p>\n<\/div>\n<p><script type=\"application\/ld+json\" class=\"weho-faq-schema\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What voltage does a vending machine power supply use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"There is no single vending-machine voltage. One machine may use 24V for motors and actuators, 12V for accessories, and 5V for logic or sensors. Read the machine schematic and each load label before selecting or replacing a supply.\"}},{\"@type\":\"Question\",\"name\":\"Can one dual-output power supply run both 24V and 5V loads?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, if the exact model provides both rails and each rail meets its current, regulation, protection, and shared-return requirements. Check combined-power limits as well as the individual output ratings in the datasheet.\"}},{\"@type\":\"Question\",\"name\":\"Why does a vending machine reset when a motor starts?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Motor or solenoid startup current can pull a rail below the controller's acceptable voltage. Long conductors, loose terminals, inadequate output capacity, or poor load separation can worsen the dip. Measure voltage at the controller during the event.\"}},{\"@type\":\"Question\",\"name\":\"How much spare capacity should a vending machine supply have?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Use an engineered margin based on measured peak demand, ambient temperature, duty cycle, aging, and the manufacturer's derating curve. A fixed percentage is not a substitute for checking the exact supply and the machine's worst operating sequence.\"}},{\"@type\":\"Question\",\"name\":\"Can a higher-wattage supply replace the original vending machine supply?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Only when voltage, rail arrangement, regulation, peak-current behavior, dimensions, mounting, connectors, grounding, cooling, and protection are compatible. More wattage alone does not make a replacement suitable.\"}},{\"@type\":\"Question\",\"name\":\"What should be checked before replacing a vending machine power supply?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Record the input rating, every output voltage and current, combined-power limits, connector pinout, mounting dimensions, grounding, fan or airflow needs, and the failure symptom. Isolate mains power and use qualified service personnel for replacement.\"}}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>vending machine power supply selection guide covering 24V and 5V rails, motors, controls, peak load, cooling, protection, and maintenance.<\/p>","protected":false},"author":1,"featured_media":17259,"parent":0,"menu_order":52,"comment_status":"","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[149,148],"class_list":["post-17264","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-blog","news_category-industry-news","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news\/17264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/comments?post=17264"}],"version-history":[{"count":1,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news\/17264\/revisions"}],"predecessor-version":[{"id":17389,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news\/17264\/revisions\/17389"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/media\/17259"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/media?parent=17264"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/th\/wp-json\/wp\/v2\/news_category?post=17264"}],"curies":[{"name":"\u0e2b\u0e19\u0e49\u0e32","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}