{"product_id":"aep7d-21-yokogawa-primary-power-supply-bus-unit","title":"AEP7D-21 | Yokogawa | Primary Power Supply Bus Unit","description":"\u003ch2\u003eYokogawa AEP7D-21 Primary Power Supply Bus Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa AEP7D-21\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eAEP7D\u003c\/strong\u003e Primary Power Supply Bus Unit, operates as a dedicated hardware component for routing and distributing 220-240 V AC primary power within CENTUM VP and CENTUM 3000 DCS platforms. It provides dual-redundant input lines with isolatable circuits to maintain uninterrupted operation during maintenance.\u003c\/p\u003e\n\u003ch3\u003eHardwareSpecifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\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\u003eModelBrand\u003c\/td\u003e\n\u003ctd\u003eAEP7D-21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 1.8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eTailored for vertical mount in general-purpose cabinets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperatingTemp\u003c\/td\u003e\n\u003ctd\u003eStandard industrial range (0 to 55 degC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowerConsumption\u003c\/td\u003e\n\u003ctd\u003eMax. Input Current: 20 A total, 6 A per port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputVoltage\u003c\/td\u003e\n\u003ctd\u003e220 V AC to 240 V AC (±10%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputFrequency\u003c\/td\u003e\n\u003ctd\u003e50 \/ 60 Hz (±3 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstandingVoltage\u003c\/td\u003e\n\u003ctd\u003e1500 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputPorts\u003c\/td\u003e\n\u003ctd\u003eUp to 14 distributed lines via shorting jumpers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control Connectivity\u003c\/h3\u003e\n\u003cp\u003eThe AEP7D-21 maintains \u003cstrong\u003echannel-to-channel isolation\u003c\/strong\u003e for all distributed outputs to reduce cross-coupling effects between modules. It is fully compatible with \u003cstrong\u003e4-20 mA HART loop protocols\u003c\/strong\u003e and supports \u003cstrong\u003eFOUNDATION Fieldbus and Profibus PA connectivity\u003c\/strong\u003e. Cold junction compensation (CJc) circuitry ensures accurate voltage delivery under varying environmental temperatures, minimizing drift across the bus unit.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the AEP7D-21 support hot-swapping of modules?\u003cbr\u003eA: The unit’s dual-redundant input design allows isolated maintenance of each line. Hot-swap of downstream modules should follow the cabinet’s standard safety and isolation procedures.\u003c\/p\u003e\n\u003cp\u003eQ: What is the recommended maximum load per output port?\u003cbr\u003eA: Each output port is rated for a maximum of 6 A. Exceeding this value may trigger protective trip mechanisms or reduce voltage stability.\u003c\/p\u003e\n\u003cp\u003eQ: Can the unit handle transient overvoltages from external sources?\u003cbr\u003eA: With a withstanding voltage of 1500 V AC, the bus unit can tolerate standard industrial transients. Surge protection at the cabinet input is advised for extended service life.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the unit vertically on the cabinet’s general-purpose DIN rails or mounting panels. Ensure clearance of at least 50 mm from adjacent modules to prevent heat accumulation.\u003c\/li\u003e\n\u003cli\u003eConnect Line A and Line B input sources to separate breakers. Verify isolation before maintenance.\u003c\/li\u003e\n\u003cli\u003eRoute output cabling to minimize cross-talk: keep power and signal lines physically separated.\u003c\/li\u003e\n\u003cli\u003eGround the unit according to ISA G3 guidelines. Use single-point grounding where possible to avoid ground loops.\u003c\/li\u003e\n\u003cli\u003eConfirm that all connections comply with rated current specifications to prevent overloading.\u003c\/li\u003e\n\u003cli\u003eCheck for proper ventilation in the cabinet to maintain operating temperature below 55 degC.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44208986652760,"sku":"AEP7D-21","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/AEP7D-21-2.jpg?v=1780971145","url":"https:\/\/www.industriaxplc.com\/products\/aep7d-21-yokogawa-primary-power-supply-bus-unit","provider":"IndustriaX Limited","version":"1.0","type":"link"}