{"product_id":"pw481-50-yokogawa-control-system-power-supply-spare","title":"PW481-50 Yokogawa Control System Power Supply Spare","description":"\u003ch3\u003e\u003cstrong\u003ePW481-50 | Yokogawa 100–120 V AC Input Power Supply Module\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa PW481-50\u003c\/strong\u003e is an AC-input power supply module designed for use in compatible Yokogawa industrial control systems. It accepts a nominal 100–120 V AC supply and supports both 50 Hz and 60 Hz power systems within the specified frequency tolerance.\u003c\/p\u003e\n\u003cp\u003eFor control-system engineers, the primary selection checks are the incoming AC supply, allowable voltage variation, available cabinet power, and compatibility with the system's dedicated module connector. The unit has a specified maximum power consumption of 200 VA and an approximate weight of 1 kg.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e01 | Electrical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #1677c8;\"\u003e\u003cstrong\u003ePW481-50\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC-input power supply module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal input voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100–120 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput voltage tolerance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency tolerance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±3 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum power consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput\/output interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDedicated connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApproximate weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExplosion protection designation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSuffix code 5: standard type without explosion protection, according to the supplied ordering information\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBasic configuration designation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSuffix code 0: basic type, according to the supplied ordering information\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003e02 | Model and Suffix Configuration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe ordering reference \u003cstrong\u003ePW481-50\u003c\/strong\u003e identifies the supplied AC-input power supply module configuration. The following tree separates the base model from the suffix information provided for ordering.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePW481\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eBase model designation\u003c\/li\u003e\n\u003cli\u003eProduct category: Yokogawa power supply module\u003c\/li\u003e\n\u003cli\u003eInput class stated in the supplied product data: 100–120 V AC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-5\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eStandard type\u003c\/li\u003e\n\u003cli\u003eNo explosion protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eBasic type\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete ordering model: \u003cspan style=\"color: #1677c8;\"\u003ePW481-50\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e100–120 V AC input power supply module\u003c\/li\u003e\n\u003cli\u003eStandard type without explosion protection\u003c\/li\u003e\n\u003cli\u003eBasic configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOrdering note:\u003c\/strong\u003e The suffix descriptions above follow the supplied ordering information. Confirm the complete ordering code and any system-specific revision requirements against the Yokogawa documentation before placing an order. Do not assume that a basic configuration includes optional protection features or accessories.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e03 | Power Input and Cabinet Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eEngineering check\u003c\/th\u003e\n\u003cth\u003eWhat to verify\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC supply compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMeasure the incoming supply and confirm it remains within the specified 100–120 V AC range with ±10% tolerance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency stability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConfirm the source operates at 50 or 60 Hz and remains within the stated ±3 Hz tolerance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllow for the stated maximum consumption of 200 VA when checking the supply circuit and cabinet power budget.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnector compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCheck the dedicated connector type, pin arrangement, mating interface, and installation procedure against the system documentation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVerify cabinet conditions, grounding, protective devices, ventilation, and applicable system requirements.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe 200 VA rating is an apparent-power specification. Do not treat it as a direct output-power rating or infer output voltage and current from this figure. Those details must be confirmed from the official module documentation.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e04 | Typical Equipment and Application Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYokogawa control-system cabinets:\u003c\/strong\u003e Power-supply replacement in a compatible control-system configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess automation installations:\u003c\/strong\u003e Power subsystem maintenance in industrial process monitoring and control environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing control panels:\u003c\/strong\u003e Maintenance of compatible controller or instrumentation assemblies that specify this module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlant shutdown and overhaul projects:\u003c\/strong\u003e Planned replacement of an existing unit when the model, connector, and system requirements have been verified.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpare-parts inventory:\u003c\/strong\u003e Critical-spares planning for facilities that already use the PW481-50 and need to reduce replacement lead-time risk.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese scenarios describe potential uses in compatible installations. The supplied information does not identify the exact host-system model or the module's DC output characteristics, so verify the target system and required power interfaces before installation.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e05 | Installation and Commissioning Checklist\u003c\/strong\u003e\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the model:\u003c\/strong\u003e Check the label for PW481-50 and compare the complete suffix with the installed unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolate incoming power:\u003c\/strong\u003e Follow site lockout procedures and verify the circuit is de-energized before handling the module or connector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure the AC input:\u003c\/strong\u003e Confirm voltage and frequency at the specified connection point using an appropriately rated meter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect the connector:\u003c\/strong\u003e Check for bent contacts, loose mating parts, contamination, and signs of heat damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the supply circuit:\u003c\/strong\u003e Verify protective devices, conductor sizing, grounding, and available power capacity against the applicable manual and site standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall according to the system manual:\u003c\/strong\u003e Use the prescribed mounting and connection procedure. Do not assume hot insertion is supported unless the manufacturer explicitly states so.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValidate the system:\u003c\/strong\u003e After energizing, check the documented module indicators and system diagnostics, then confirm that the associated control equipment operates normally.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e\u003cstrong\u003e06 | Global PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ePower-supply faults can resemble controller or I\/O failures because unstable or missing supply power may affect multiple components. A structured diagnosis should begin with the incoming AC source and connector interface before replacing other modules.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule or host system does not start:\u003c\/strong\u003e Measure the incoming AC voltage and frequency. Check the upstream breaker, protective device, wiring, and connector seating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRepeated power interruptions:\u003c\/strong\u003e Record supply voltage during the event and inspect for loose terminals, unstable source conditions, or overloaded upstream circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnexpected system resets:\u003c\/strong\u003e Compare the timing of the reset with supply disturbances and other system events. Inspect the power distribution path before attributing the fault to the CPU.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector shows discoloration or heat damage:\u003c\/strong\u003e De-energize the circuit and inspect the mating contacts and connection integrity. Resolve the cause before returning the system to service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement unit does not restore operation:\u003c\/strong\u003e Recheck the full part number, suffix configuration, connector compatibility, and host-system requirements. Confirm whether the original fault lies elsewhere in the power distribution system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eField maintenance tip:\u003c\/strong\u003e Record the measured input voltage, frequency, fault timing, and affected system components before changing hardware. This evidence helps distinguish a module failure from an upstream supply problem and reduces unnecessary replacement work.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e07 | Compatibility and Replacement Selection\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWhen sourcing a replacement for the PW481-50, use the installed module and system documentation as the primary references. Confirm the following before purchase:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExact model and suffix: PW481-50.\u003c\/li\u003e\n\u003cli\u003eRequired input supply: 100–120 V AC with the stated tolerances.\u003c\/li\u003e\n\u003cli\u003e50\/60 Hz operating frequency and ±3 Hz tolerance.\u003c\/li\u003e\n\u003cli\u003eDedicated connector compatibility and correct system installation position.\u003c\/li\u003e\n\u003cli\u003eRequired protection classification and the meaning of the ordered configuration.\u003c\/li\u003e\n\u003cli\u003eHost-system requirements and any applicable hardware revision restrictions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe PW481-50 is specified as a standard type without explosion protection. Do not select it for an installation requiring a certified explosion-protection configuration unless the complete system documentation explicitly supports that choice.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e08 | Warranty, Dispatch and Shipping\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Yokogawa PW481-50 AC-input power supply module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New and original, subject to order and stock confirmation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months, subject to the seller's written warranty terms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch target:\u003c\/strong\u003e Within 24–48 hours after order and stock confirmation, subject to processing requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping options:\u003c\/strong\u003e FedEx, UPS, or DHL, subject to destination and service availability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuotation support:\u003c\/strong\u003e Provide the complete model, quantity, destination country, and host-system information for a stock and compatibility check.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e09 | Frequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1. Can the PW481-50 be connected to a 230 V AC supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe supplied specification lists an input range of 100–120 V AC ±10%. A 230 V AC source is outside that range. Do not connect the module directly to 230 V AC; confirm an approved supply arrangement with the system documentation and qualified electrical personnel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2. Does the 200 VA rating indicate the module's DC output capacity?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The supplied data identifies 200 VA as maximum power consumption, not as a DC output rating. Output voltage, output current, and supported load capacity must be confirmed from the manufacturer's specifications for the exact module.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3. What information helps identify the correct spare when several power modules look similar?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse the full model and suffix, input voltage class, connector arrangement, host-system model, and required protection classification. A photograph of the nameplate and connector can help with identification, but the final selection should be checked against the official part documentation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4. What should maintenance personnel record before replacing a suspected faulty power module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRecord the incoming AC voltage and frequency, the symptoms, the affected equipment, the timing of any resets, and the condition of the connector and upstream protective devices. These measurements help determine whether the fault originates in the module or in the external supply circuit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5. Is the standard PW481-50 suitable for a hazardous-area installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe supplied ordering information describes suffix 5 as a standard type without explosion protection. If the installation requires explosion-protection certification, verify the required classification and approved equipment list before purchasing. Do not assume that the module is suitable for a hazardous location solely because it belongs to a Yokogawa control system.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":67737628147894,"sku":"PW481-50","price":210.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/PW481-50.jpg?v=1792739098","url":"https:\/\/www.plcsparehub.com\/products\/pw481-50-yokogawa-control-system-power-supply-spare","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}