{"product_id":"yokogawa-pw501-power-supply-module","title":"Yokogawa PW501 Power Supply Module","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa PW501\u003c\/strong\u003e is a power supply module identified for use in Yokogawa industrial control equipment. It is intended to provide electrical power to the associated system hardware. Before selecting it as a replacement, the complete equipment configuration, power supply specifications, and applicable hardware revision should be checked against the installed system.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFunction and System Role\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe PW501 is designed for Yokogawa communication equipment, including the YNT511D optical bus repeater and YNT512D bus repeater. It accepts 100-120 V AC input and converts it into insulated DC power supplies, which are distributed to the repeater component units through the internal backboard.\u003c\/p\u003e\n\u003cp\u003eThis power distribution arrangement allows the repeater's internal communication components to receive their required operating power from a dedicated supply module.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eElectrical Input and Protection\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe PW501 uses a dedicated AC input connection with L and N terminals and a separate grounding terminal. The module also incorporates a power ON\/OFF switch, a power indicator lamp, and a replaceable tubular fuse.\u003c\/p\u003e\n\u003cp\u003eThe documented fuse specification is \u003cstrong\u003e250 V, 1 A\u003c\/strong\u003e. The corresponding Yokogawa replacement fuse is \u003cstrong\u003eA1361EF\u003c\/strong\u003e. The power indicator illuminates green when the input is energized and the module switch is ON.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003ePW501\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePower Supply Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e100-120 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse Rating\u003c\/td\u003e\n\u003ctd\u003e250 V, 1 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse Part Number\u003c\/td\u003e\n\u003ctd\u003eA1361EF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Distribution\u003c\/td\u003e\n\u003ctd\u003eInsulated DC power via internal backboard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Connection\u003c\/td\u003e\n\u003ctd\u003eL and N terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrounding\u003c\/td\u003e\n\u003ctd\u003eDedicated grounding terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Control\u003c\/td\u003e\n\u003ctd\u003eON\/OFF switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indication\u003c\/td\u003e\n\u003ctd\u003eGreen POWER lamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eNest-mounted, backboard connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation and Maintenance Considerations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe PW501 is installed in the repeater nest and connects to the internal backboard. Its replacement requires attention to both the external AC wiring and the backboard connector.\u003c\/p\u003e\n\u003cp\u003eYokogawa specifies the following replacement precautions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTurn off the module power switch and external power source before removal.\u003c\/li\u003e\n\u003cli\u003eDisconnect the power cables and grounding cable.\u003c\/li\u003e\n\u003cli\u003eRelease the four mounting screws and withdraw the module using its handle.\u003c\/li\u003e\n\u003cli\u003eInsert the replacement module along the nest guide rail and secure it.\u003c\/li\u003e\n\u003cli\u003eReconnect the power and grounding cables, restore the external supply, and verify that the POWER lamp illuminates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe manufacturer documents an 8-year recommended replacement period for the PW501 under an average ambient temperature of 40 deg C or lower. This is a preventive maintenance guideline rather than a guaranteed service life.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between PW501, PW502, and PW504?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: These models are distinguished by their input power requirements:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePW501: 100-120 V AC\u003c\/li\u003e\n\u003cli\u003ePW502: 220-240 V AC\u003c\/li\u003e\n\u003cli\u003ePW504: 24 V DC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe input voltage must match the available power source and the installed repeater configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which replacement fuse is specified for the PW501?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yokogawa specifies fuse part number \u003cstrong\u003eA1361EF\u003c\/strong\u003e, rated at 250 V and 1 A. Turn off the module and external power source before replacing the fuse.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the PW501 be replaced while the equipment is energized?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The documented replacement procedure requires switching off the module and external power source before removal. Live replacement should therefore not be assumed or performed based on a hot-swap capability claim.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":69308707406066,"sku":"PW501","price":245.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0730\/5589\/5794\/files\/PW5012.jpg?v=1794538306","url":"https:\/\/www.petrospare.com\/products\/yokogawa-pw501-power-supply-module","provider":"Petro Spare Industrial Limited","version":"1.0","type":"link"}