{"product_id":"mitsubishi-mr-j3-700a4-7-0kw-400v-servo-amplifier","title":"Mitsubishi MR-J3-700A4 | 7.0kW 400V Servo Amplifier","description":"\u003ch2\u003e\u003cstrong\u003eMitsubishi MR-J3-700A4 Servo Amplifier: High-Voltage Power for Industrial Demands\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is the \u003cstrong\u003eMitsubishi MR-J3-700A4\u003c\/strong\u003e, a robust servo amplifier designed for high-voltage industrial applications. Part of the reliable MELSERVO MR-J3 series, the \u003cstrong\u003eMR-J3-700A4\u003c\/strong\u003e delivers a rated 17A current and operates on 380-480VAC power, making it ideal for driving large motors in demanding environments.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eEngineered for High-Power Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Voltage Ready:\u003c\/strong\u003e Designed for \u003cstrong\u003e3-phase 380-480VAC\u003c\/strong\u003e industrial power supplies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Output:\u003c\/strong\u003e Provides \u003cstrong\u003e17A rated current\u003c\/strong\u003e for driving powerful servo motors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Control:\u003c\/strong\u003e Uses sine-wave PWM and current control for precision and smooth operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in Safety:\u003c\/strong\u003e Integrated dynamic brake ensures safe and controlled motor deceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForce-Cooled Reliability:\u003c\/strong\u003e Open structure with forced cooling maintains performance under continuous high load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDetailed Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer \u0026amp; Series:\u003c\/strong\u003e Mitsubishi Electric, MELSERVO MR-J3 Series.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003eMR-J3-700A4\u003c\/strong\u003e Servo Amplifier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Output Power:\u003c\/strong\u003e 7.0 kW.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Output Current:\u003c\/strong\u003e 17 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Output Voltage:\u003c\/strong\u003e 3-phase, 323VAC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain Circuit Power:\u003c\/strong\u003e 3-phase, 380-480VAC, 50\/60Hz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain Circuit Input Current:\u003c\/strong\u003e 14.4 A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Circuit Power:\u003c\/strong\u003e 1-phase, 380-480VAC, 50\/60Hz, 45W.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface Power:\u003c\/strong\u003e 24VDC (for internal logic and I\/O).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Method:\u003c\/strong\u003e Sine-wave PWM control, current control system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication Interface:\u003c\/strong\u003e SSCNET III fiber optic interface (standard for this series).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake Unit:\u003c\/strong\u003e Built-in dynamic brake.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling Method:\u003c\/strong\u003e Force-cooling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Rating:\u003c\/strong\u003e IP00 (Open chassis, requires protective panel).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e \u003cstrong\u003e0°C to +55°C\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 6.2 kg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Motors:\u003c\/strong\u003e Mitsubishi HF-SP, HA-LP, and other high-power 400V-class MR-J3 servo motors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eWarranty Assurance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWe guarantee product quality and performance. This amplifier is covered by a reliable \u003cstrong style=\"color: #16a085;\"\u003e12-month warranty\u003c\/strong\u003e against any defects in materials or manufacturing.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal Delivery Options\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWe ship internationally using our trusted courier partners: \u003cstrong\u003eFedEx, UPS, and DHL\u003c\/strong\u003e. Tracking information is provided for all shipments.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat type of applications typically use this high-voltage amplifier?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe \u003cstrong\u003eMR-J3-700A4\u003c\/strong\u003e is suited for heavy-duty machinery. Common applications include large metal forming presses, industrial extruders, heavy-duty CNC machining centers, and large material handling systems that operate on 400V-class power.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat is the significance of the 323VAC rated output voltage?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThis is the typical voltage supplied to the motor under normal operation when the main input is at 400VAC. It reflects the internal voltage conversion of the amplifier and is crucial for correctly matching with a 400V-class servo motor.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eDoes this model support direct network communication like EtherCAT?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe standard interface for the MR-J3-700A4 model is \u003cstrong\u003eSSCNET III\u003c\/strong\u003e fiber optics. For EtherCAT communication, you would need to select a specific EtherCAT model variant from the MR-J3 series (e.g., MR-J3-350A-ETHERCAT).\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eHow important is the forced cooling feature?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eFor a 7kW amplifier, forced cooling is \u003cstrong\u003eessential\u003c\/strong\u003e. It uses an internal fan to actively remove heat generated by the power transistors. This allows the amplifier to maintain its rated output current continuously in a typical industrial cabinet environment.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat are the key electrical safety checks before powering it on?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eAlways verify: 1) Main power voltage matches the 380-480VAC range, 2) The protective earth (ground) connection is secure, 3) The correct fuses or circuit breakers are installed on the power input lines, and 4) All motor and encoder connections are tight and correct.\u003c\/p\u003e\n\u003cp\u003e© 2025 Ubest Automation Limited. All rights reserved.\u003cbr\u003eOriginal Source: \u003ca href=\"https:\/\/www.ubestplc.com\/\"\u003ehttps:\/\/www.ubestplc.com\/\u003c\/a\u003e\u003cbr\u003eContact: \u003ca href=\"mailto:sales@ubestplc.com\"\u003esales@ubestplc.com\u003c\/a\u003e | Phone\/WhatsApp: \u003ca href=\"https:\/\/wa.me\/8618030005825\"\u003e+86 180 3000 5825\u003c\/a\u003e\u003c\/p\u003e","brand":"Mitsubishi","offers":[{"title":"Default Title","offer_id":51492083958042,"sku":"MR-J3-700A4","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0873\/6240\/4634\/files\/MR-J3-700A4.jpg?v=1766541151","url":"https:\/\/www.ubestplc.com\/products\/mitsubishi-mr-j3-700a4-7-0kw-400v-servo-amplifier","provider":"Ubest Automation Limited","version":"1.0","type":"link"}