{"product_id":"mitsubishi-electric-mr-j4-40b-melsec-mr-j4-series-servo-amplifier","title":"Mitsubishi Electric MR-J4-40B MELSEC MR-J4 Series Servo Amplifier","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDesigned to meet the stringent demands of high-speed, multi-axis motion control applications, the \u003cstrong\u003eMitsubishi Electric MR-J4-40B\u003c\/strong\u003e is a highly responsive 200V \u003cstrong\u003eservo amplifier\u003c\/strong\u003e operating on the proprietary SSCNET III\/H fiber optic communication network. This unit provides a rated output of 0.4 kW (400W) and leverages advanced real-time tuning algorithms to minimize mechanical vibration and maximize positioning accuracy. Built with native Safe Torque Off (STO) functionality, the hardware ensures high-integrity functional safety within modern industrial architectures while maintaining a compact IP20 physical footprint.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSSCNET III\/H Interface:\u003c\/strong\u003e High-speed synchronous optical network capability enabling communication cycle times down to 0.222 ms for highly synchronized multi-axis operations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced Vibration Suppression:\u003c\/strong\u003e Employs Advanced Vibration Suppression Control II and dual adaptive filters to automatically detect and suppress mechanical resonance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Functional Safety:\u003c\/strong\u003e Certified STO (Safe Torque Off) dual-channel input to bypass the power stage without de-energizing the main circuit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRobust Control Architecture:\u003c\/strong\u003e Employs sinusoidal wave PWM control paired with continuous current feedback loop adjustment for seamless motor torque execution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003eHigh-speed semiconductor packaging and wire-bonding machinery.\u003c\/li\u003e\n  \u003cli\u003eMulti-axis Cartesian robotic pick-and-place stations.\u003c\/li\u003e\n  \u003cli\u003ePrecision rotary packaging, indexing, and labeling systems.\u003c\/li\u003e\n  \u003cli\u003eAutomated tool changers and synchronized positioning gantries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2d3748;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eSpecification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eMitsubishi Electric\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eMR-J4-40B\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eVoltage Class\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e200V Class\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eMotor Rated Output\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0.4 kW (400 W)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOutput Rated Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e3-phase AC 170 V\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOutput Rated Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2.8 A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eMain Circuit Power Input\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e3-phase or 1-phase AC 200 V to 240 V, 50 Hz \/ 60 Hz (Rated: 2.6 A)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eControl Circuit Power Input\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e1-phase AC 200 V to 240 V, 50 Hz \/ 60 Hz (Rated: 0.2 A, 30 W)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eControl Method\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eSinusoidal PWM control, current control system\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eBuilt-in Regenerative Resistor\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e10 W\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eSafety Standards\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eEN ISO 13849-1 Cat 3 PL e, IEC 61508 SIL 3, EN 62061 SIL CL 3\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOperating Ambient Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0 degC to 55 degC (non-freezing)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eProtection Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eIP20 (Self-cooling, open type)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2.0 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e210 mm x 180 mm x 95 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2d3748;\"\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eConnector \/ Terminal\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; font-weight: bold;\"\u003eFunctional Assignment\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCN1A\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eSSCNET III\/H Optical Cable Input (from controller or previous axis)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCN1B\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eSSCNET III\/H Optical Cable Output (to subsequent axis or end termination)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCN2\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eMotor Encoder Interface (high-speed serial feedback)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCN3\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAnalog Monitor Output \u0026amp; I\/O Signal Terminal\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eCN8\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eSafe Torque Off (STO) Safety Signal Input Terminal\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe unit includes a built-in J3 compatibility mode, enabling seamless retrofitting of older MR-J3-40B architectures without replacing existing servo motor physical runs. However, note that parameters must be migrated via MR Configurator2, and maximum bus speed will match the lower J3 performance characteristics unless the upstream controller is fully reconfigured to the SSCNET III\/H native protocol.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen operating on a single-phase AC 200V line instead of a three-phase line, the power supply must be wired to L1 and L3 terminals (leaving L2 empty). Under single-phase configurations, the thermal dissipation characteristics within the electrical enclosure change significantly. Panel builders must ensure an active airflow buffer of at least 10 mm on both sides of the amplifier when mounting multiple units in a daisy-chain configuration.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe fiber-optic SSCNET III\/H cables (MR-J3BUS) must never be bent past their minimum specified bend radius of 25 mm. Exceeding this limit will result in intermittent optical communication errors (such as AL.37 or AL.E6). Always use the dedicated CN8 shorting connector if the STO function is not integrated into an active safety PLC loop, or the amplifier will remain in a permanent STO block state.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem; color: #9b2c2c;\"\u003e\n  \u003cstrong\u003eCRITICAL WARNING:\u003c\/strong\u003e Hazardous voltage levels can remain present in the main circuit internal capacitors for up to 15 minutes after power has been completely isolated. Always verify with a calibrated multimeter that the charge indicator LED on the front face of the amplifier is completely extinguished and the DC bus voltage is below 50V DC before initiating physical wiring or terminal extraction.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold; font-size: 0.85rem;\"\u003e1\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eMount the amplifier vertically on a flat, grounded metallic backplate to ensure proper convective self-cooling behavior.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold; font-size: 0.85rem;\"\u003e2\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConnect the protective earth (PE) terminal first, utilizing a dedicated, heavy-gauge copper conductor to mitigate high-frequency EMI.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold; font-size: 0.85rem;\"\u003e3\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eRoute main AC power lines (L1, L2, L3) and control power lines (L11, L21) through a dedicated noise filter and circuit protection group.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 1.75rem; height: 1.75rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold; font-size: 0.85rem;\"\u003e4\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eInsert the optical network connections into CN1A and CN1B, ensuring they securely click into place with dust covers removed.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Mitsubishi Electric","offers":[{"title":"Default Title","offer_id":53102144717163,"sku":"MR-J4-40B","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/MR-J4-40B-1gkoah1uief.png?v=1776137874","url":"https:\/\/www.plcprotech.com\/ms\/products\/mitsubishi-electric-mr-j4-40b-melsec-mr-j4-series-servo-amplifier","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}