{"product_id":"mitsubishi-servo-amplifier-sscnet-iii-h-drive-mr-j3-700bn","title":"Mitsubishi Servo Amplifier | SSCNET III\/H Drive MR-J3-700BN","description":"\u003ch2\u003eMitsubishi MR-J3-700BN 7kW Servo Amplifier\u003c\/h2\u003e\n\u003cp\u003eThe Mitsubishi \u003cb\u003eMR-J3-700BN\u003c\/b\u003e is a powerful and advanced servo amplifier designed for high-demand industrial motion control. This 7kW unit delivers robust performance for heavy-duty applications. It is engineered with the SSCNET III\/H interface for seamless integration within the MELSERVO MR-J3 series.\u003c\/p\u003e\n\u003ch3\u003ePrimary Electrical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer \u0026amp; Model:\u003c\/strong\u003e Mitsubishi \u003cb\u003eMR-J3-700BN\u003c\/b\u003e Servo Amplifier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Output:\u003c\/strong\u003e 7000W (7 kilowatts) for high-torque applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 3-phase 200 to 230 Volts AC, 50\/60 Hz input.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication Interface:\u003c\/strong\u003e High-speed SSCNET III\/H optical interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Method:\u003c\/strong\u003e Sine wave PWM control combined with current control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface Power:\u003c\/strong\u003e Requires 24 Volts DC at 150 milliamperes capacity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePerformance \u0026amp; Protection Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBraking System:\u003c\/strong\u003e Compatible with an external dynamic brake unit for enhanced stopping control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in Resistor:\u003c\/strong\u003e Features a 170 Watt built-in regenerative resistor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Tolerance:\u003c\/strong\u003e Permits input frequency fluctuations between \u003cstrong\u003e-5 to +5%\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacitor Charging:\u003c\/strong\u003e Has a capacitor charging capacity of 70 joules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInrush Current:\u003c\/strong\u003e Main circuit: 88 Amperes; Control circuit: 30 Amperes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e Reliable in ambient temperatures from \u003cstrong\u003e0 to 55 °C\u003c\/strong\u003e (non-freezing).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackaging \u0026amp; Shipping Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOne Mitsubishi MR-J3-700BN Servo Amplifier unit.\u003c\/li\u003e\n\u003cli\u003eComplete installation guide and technical specification documents.\u003c\/li\u003e\n\u003cli\u003eAll necessary mounting brackets and hardware.\u003c\/li\u003e\n\u003cli\u003eInternational shipping via FedEx, UPS, and DHL for efficient delivery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProfessional FAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhat is the purpose of the external dynamic brake connection?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor high-inertia loads or rapid cycling applications, the internal regenerative resistor may be insufficient. The external brake connection allows you to add a more powerful external braking resistor or brake unit to safely dissipate the excess regenerative energy without faulting the drive.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhy are there two different inrush current ratings?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe main circuit inrush (88A) occurs when power is first applied to charge the large DC bus capacitors. The control circuit inrush (30A) is for its smaller internal power supply. Your system's circuit breakers or fuses must be sized to handle these brief surges without nuisance tripping.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHow does the 70-joule capacitor charging capacity affect safety?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis indicates the amount of energy stored in the DC bus capacitors. It is a critical safety specification. Technicians must wait the specified time after power-off (as per the manual) before servicing to allow this stored energy to dissipate, preventing electric shock.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhen would the built-in 170W regenerative resistor be adequate?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is suitable for applications with moderate inertial loads and infrequent deceleration cycles. If your application involves frequent stop\/start motions or high inertia, you should monitor the resistor's temperature or plan to use an external resistor to avoid overload faults.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWhat does the ±5% frequency fluctuation tolerance mean for operation?\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cb\u003eMR-J3-700BN\u003c\/b\u003e can maintain stable operation even if the incoming line frequency varies slightly (e.g., between 47.5 Hz and 52.5 Hz on a 50 Hz nominal system). This is important in areas with unstable power grids or when operating from a generator.\u003c\/p\u003e\n\u003cp\u003e© 2025 Ubest Automation Limited. All rights reserved.\u003cbr\u003eOriginal Source: \u003ca href=\"https:\/\/www.ubestplc.com\/\" target=\"_blank\"\u003ehttps:\/\/www.ubestplc.com\/\u003c\/a\u003e\u003cbr\u003eContact: \u003ca href=\"mailto:sales@ubestplc.com\"\u003esales@ubestplc.com\u003c\/a\u003e | Phone: \u003ca href=\"https:\/\/wa.me\/8618030005825\" target=\"_blank\"\u003e+86 180 3000 5825\u003c\/a\u003e\u003c\/p\u003e","brand":"Mitsubishi","offers":[{"title":"Default Title","offer_id":51488455262490,"sku":"MR-J3-700BN","price":187.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/6240\/4634\/files\/MR-J3-700BN.jpg?v=1766453289","url":"https:\/\/www.ubestplc.com\/el\/products\/mitsubishi-servo-amplifier-sscnet-iii-h-drive-mr-j3-700bn","provider":"Ubest Automation Limited","version":"1.0","type":"link"}