{"product_id":"mitsubishi-electric-mr-j4w2-44b-melservo-j4-series-2-axis-servo-amplifier","title":"Mitsubishi Electric MR-J4W2-44B MELSERVO-J4 Series 2-Axis Servo Amplifier","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDesigned to execute synchronized multi-axis control within a single space-saving envelope, the \u003cstrong\u003eMitsubishi Electric MR-J4W2-44B\u003c\/strong\u003e is a dual-axis digital AC servo amplifier operating on the MELSERVO-J4 platform. By consolidating control electronics for \u003cstrong\u003etwo independent 0.4 kW axes\u003c\/strong\u003e, this unit significantly reduces control panel footprints, optimizes power distribution, and streamlines network routing. The integration of high-speed \u003cstrong\u003eSSCNET III\/H\u003c\/strong\u003e optical fiber communications enables high-resolution motion synchronization with negligible electromagnetic interference, making it an ideal choice for high-speed, multi-axis automated assemblies.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Axis Integration:\u003c\/strong\u003e Drives two independent rotary or linear servo motors up to 0.4 kW each, cutting cabinet space requirements by up to 30 percent.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSSCNET III\/H Protocol:\u003c\/strong\u003e High-speed optical bus operating at 150 Mbps for precise, deterministic synchronized control with complete noise immunity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced Vibration Suppression Control II:\u003c\/strong\u003e Dynamically compensates for mechanical resonance in both high-frequency structural elements and low-frequency load oscillation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOne-Touch Tuning:\u003c\/strong\u003e Real-time estimation of mechanical inertia ratio enables instantaneous auto-tuning of servo gains.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFunctional Safety Support:\u003c\/strong\u003e Integrated Safe Torque Off (STO) functions compliant with international safety standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003eSynchronized multi-axis packaging machinery and cartoning lines.\u003c\/li\u003e\n  \u003cli\u003eHigh-speed pick-and-place gantry robots and semiconductor assembly systems.\u003c\/li\u003e\n  \u003cli\u003ePrecise X-Y positioning tables and material handling conveyors.\u003c\/li\u003e\n  \u003cli\u003eAutomated winding, indexing, and labeling machinery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications Table\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;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; width: 30%;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eMitsubishi Electric\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eMR-J4W2-44B\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eSeries Name\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eMELSERVO-J4 (MR-J4)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eControlled Axes\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e2 Axes (Axis A and Axis B)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eRated Output Power\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.4 kW per axis (Total 0.8 kW)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCommunication Interface\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eSSCNET III\/H (Optical connection)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eMain Circuit Power Supply\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3-phase 200 to 240 VAC, 50\/60 Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eControl Circuit Power Supply\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1-phase 200 to 240 VAC, 50\/60 Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eEncoder Compatibility\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e22-bit absolute\/incremental systems\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCooling Method\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eNatural cooling\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eAmbient Operating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0 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: 10px; font-weight: bold;\"\u003eDimensions (H x W x D)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e195 mm x 60 mm x 168 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eNet Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1.4 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3.5 kg\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;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold; width: 35%;\"\u003eTerminal \/ Connector Code\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; 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: 10px; font-family: monospace;\"\u003eL1 \/ L2 \/ L3\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eMain circuit power supply input (200-240 VAC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-family: monospace;\"\u003eL11 \/ L21\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eControl circuit power supply input\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-family: monospace;\"\u003eU \/ V \/ W (Axis A)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eServo motor output terminals for Axis A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-family: monospace;\"\u003eU \/ V \/ W (Axis B)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eServo motor output terminals for Axis B\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-family: monospace;\"\u003eCN1A \/ CN1B\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eSSCNET III\/H optical fiber loop connectors (In\/Out)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-family: monospace;\"\u003eCN2A \/ CN2B\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eEncoder connection interfaces for Axis A \/ Axis B\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-family: monospace;\"\u003eCN8\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eFunctional safety signal connector (STO)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe MR-J4W2 series is designed as the primary platform for multi-axis configurations within the MR-J4 ecosystem. Note that when migrating legacy MR-J3W units to the MR-J4W2 configuration, parameter translation within the programming suite (such as GX Works2 or GX Works3) is required. While physical mounting footprints differ slightly from single-axis units, the space gains from eliminating independent control power cabling easily justify the transition.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eBecause both Axis A and Axis B share a common internal DC bus, regenerative energy from decelerating one axis is naturally utilized by the second motoring axis. However, if both axes undergo simultaneous high-inertia deceleration, the regenerative capacity can quickly saturate the internal capacitor, triggering an Overvoltage (AL.33) fault. For operations with continuous regenerative cycles or high load inertia, always calculate total system regeneration requirements and connect an appropriately sized external regeneration resistor across the L+ and L- terminals.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen laying the SSCNET III\/H optical fiber cables (MR-J3BUS_M), do not violate the minimum bend radius of 25 mm. Sharp bends or excessive zip-tie tension on the fiber optic routing will attenuate the light signal, leading to random line failures (AL.37) or communication errors (AL.E6). Always cap unused optical ports on the amplifier to prevent dust and humidity contamination of the optical transceiver lens.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 15px; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"color: #9b2c2c; font-weight: bold; margin: 0 0 5px 0;\"\u003eCRITICAL WARNING:\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0; font-size: 0.95rem;\"\u003eRisk of electric shock and residual charge discharge. Always disconnect the main circuit and control circuit power supplies before beginning physical installation or wiring. Wait at least 15 minutes after power-down for the internal charge lamps on the front face of the amplifier to completely extinguish before handling cable connections.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eMount the servo amplifier vertically on a flat, unpainted metallic surface to guarantee low impedance grounding and maximize thermal heat transfer.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eEnsure a clear spacing of at least 40 mm above and below the housing, and at least 10 mm on either side of the chassis to allow unobstructed airflow.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 15px; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eConnect the protective earth (PE) terminal to the cabinet grounding panel before connecting any input power phases or encoder cables.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Mitsubishi Electric","offers":[{"title":"Default Title","offer_id":53102128234859,"sku":"MR-J4W2-44B","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/mr-j4w2-44b-eggobvfleap.png?v=1776137890","url":"https:\/\/www.plcprotech.com\/products\/mitsubishi-electric-mr-j4w2-44b-melservo-j4-series-2-axis-servo-amplifier","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}