{"product_id":"edwards-seiko-seiki-scu-21d-turbo-molecular-pump-controller","title":"Edwards \/ Seiko Seiki SCU-21D Turbo Molecular Pump Controller","description":"\u003cp\u003eThe \u003cb\u003eEdwards \/ Seiko Seiki SCU-21D\u003c\/b\u003e is a universal electronic control unit engineered to drive and monitor 5-axis magnetically levitated (Maglev) turbomolecular pumps, particularly the STP-301 and related series. Originally developed by Seiko Seiki (whose turbopump division was later acquired by Edwards), this controller provides friction-free rotor suspension, eliminating the need for internal bearing lubrication and preventing hydrocarbon contamination in ultra-high vacuum environments.\u003c\/p\u003e\n\u003cp\u003eThis controller incorporates advanced Auto Vibration Reduction (AVR) and an Auto Balancing System (ABS). These technologies dynamically adjust magnetic suspension currents in real-time to counteract rotor imbalance, ensuring exceptionally smooth, low-vibration operation across all rotational speeds.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv class=\"horizontal-scroll-wrapper\"\u003e\n\u003cdiv class=\"table-block-component\"\u003e\n\u003cdiv class=\"table-block has-export-button new-table-style is-at-scroll-start is-at-scroll-end\"\u003e\n\u003cdiv class=\"table-content md-content\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eParameter\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eControl Architecture\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5-Axis Active Magnetic Bearing (AMB) Drive\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eInput Supply Voltage\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100–120 VAC \/ 200–240 VAC (\u003cspan class=\"math-inline\"\u003e\u003cspan class=\"katex\"\u003e\u003cspan class=\"katex-html\"\u003e\u003cspan class=\"base\"\u003e\u003cspan class=\"strut\"\u003e\u003c\/span\u003e\u003cspan class=\"mord\"\u003e±\u003c\/span\u003e\u003cspan class=\"mord\"\u003e10%\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e), 1-Phase (50\/60 Hz)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eMax Power Consumption\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e~550 VA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eOutput Frequency\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eVariable AC drive output\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eVibration Suppression\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAuto Vibration Reduction (AVR) \u0026amp; Auto Balancing System (ABS)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eCommunication \/ I\/O\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStandard Remote I\/O terminal connector \u0026amp; Serial Ports\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eOperating Temperature\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 °C to 40 °C (32 °F to 104 °F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eDimensions (H x W x L)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e132.5 mm x 209.7 mm x 400.0 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eWeight\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e~8.6 kg (19 lbs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\u003c\/h2\u003e\n\u003ch2\u003eCompatible Turbo Pump Series\u003c\/h2\u003e\n\u003cp\u003eThe SCU-21D is designed to pair with Edwards \/ Seiko Seiki medium-capacity maglev pumps, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSTP-301 Series:\u003c\/b\u003e STP-301 (Standard), STP-301C (Corrosive-Spec), STP-301CVB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Features \u0026amp; Lab Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eTotal Oil-Free Operation:\u003c\/b\u003e 5-axis active magnetic levitation completely removes mechanical bearing friction and wear, translating to near-zero maintenance cycles and zero oil backstreaming.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAuto Vibration Reduction (AVR):\u003c\/b\u003e Internal logic actively compensates for minor shifts in the pump's center of mass, delivering the ultra-low vibration profiles required for electron microscopy and sensitive surface analysis.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAuto Balancing System (ABS):\u003c\/b\u003e Stabilizes the rotor dynamically during both the critical run-up acceleration phase and high-gas-load processing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBattery-Free Emergency Braking:\u003c\/b\u003e In the event of a facility power failure, the controller harvests back-EMF generated by the spinning rotor to keep the magnetic bearings powered while the pump safely decelerates.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Edwards","offers":[{"title":"Default Title","offer_id":47945159606461,"sku":null,"price":4195.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/1016\/9021\/files\/EdwardsSCU-21D_1.jpg?v=1785878422","url":"https:\/\/labvac.com\/products\/edwards-seiko-seiki-scu-21d-turbo-molecular-pump-controller","provider":"Labvac","version":"1.0","type":"link"}