{"product_id":"mitsubishi-electric-mr-j3-700b-melservo-j3-servo-amplifier","title":"Mitsubishi Electric MR-J3-700B MELSERVO-J3 Servo Amplifier","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEngineered for high-performance motion control, the \u003cstrong\u003eMitsubishi Electric MR-J3-700B\u003c\/strong\u003e is a digital, fully digital servo amplifier designed for seamless integration within the \u003cstrong\u003eMELSERVO-J3\u003c\/strong\u003e system architecture. Operating on a high-speed \u003cstrong\u003eSSCNET III optical fiber bus interface\u003c\/strong\u003e, this 7.0 kW drive unit achieves highly synchronized multi-axis control with minimal electrical noise interference. The unit coordinates with high-resolution 18-bit absolute and incremental rotary encoders to provide exceptional velocity stability and positioning accuracy in demanding automation environments. Integrated real-time auto-tuning and advanced vibration suppression algorithms automatically adjust control loop gains to compensate for mechanical resonance, minimizing settling times on complex machinery.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eKey Technical 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 Bus Connection:\u003c\/strong\u003e Fiber-optic communication interface enabling 0.44 ms cycle times and complete noise immunity over long physical runs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced Vibration Suppression:\u003c\/strong\u003e Dual-frequency adaptive vibration filters suppress both structural resonance and end-of-arm oscillation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Resolution Feedback:\u003c\/strong\u003e Native decoding of 18-bit (262,144 pulses per revolution) absolute encoders for highly stable low-speed performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdaptive Auto-Tuning:\u003c\/strong\u003e Continuous online inertia ratio calculation adjusts gain parameters dynamically during machine operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Force-Cooled Chassis:\u003c\/strong\u003e Built-in cooling fan assembly optimizes heat dissipation for high-duty cycle heavy industrial applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eApplications\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\u003eMulti-Axis CNC Machining Centers:\u003c\/strong\u003e High-speed interpolation and synchronous path contouring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSemiconductor \u0026amp; Electronics Assembly:\u003c\/strong\u003e Micro-positioning stages and high-throughput pick-and-place lines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomotive Press and Gantry Systems:\u003c\/strong\u003e Synchronized transfer systems requiring high torque output and rapid acceleration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackaging \u0026amp; Converting Machinery:\u003c\/strong\u003e Precision tension control, flying shears, and continuous rotary sealing axes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\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; font-size: 0.9rem;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold; width: 35%;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eMitsubishi Electric\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eModel Designation\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eMR-J3-700B\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eSeries\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eMELSERVO-J3 Type B\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eRated Output Power\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e7.0 kW\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOutput Rated Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e37.0 A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOutput Rated Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e3-phase 170 V AC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePower Supply Input\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e3-phase 200 V AC to 230 V AC, 50\/60 Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eControl Interface\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eSSCNET III (High-Speed Serial Bus)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eSpeed Frequency Response\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e2100 Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCooling System\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eForced Air Cooling (Internal Fan)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eProtection Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eIP20 (Open Chassis)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\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: 8px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e7.2 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eInterface and Power Connections\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; font-size: 0.9rem;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold; width: 25%;\"\u003eTerminal \/ Port\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eConnection Assignment \u0026amp; Function\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: 8px; font-weight: bold;\"\u003eL1 \/ L2 \/ L3\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eMain Power Supply Input (3-phase 200-230 V AC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eL11 \/ L21\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eControl Circuit Power Supply Input (Single-phase 200-230 V AC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eU \/ V \/ W\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eServo Motor Power Output (Phase connection to motor windings)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCN1A \/ CN1B\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eSSCNET III Optical Fiber Connector (In \/ Out bus links)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCN2\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eEncoder Feedback Connector (High-speed absolute\/incremental input)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.25rem;\"\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe MR-J3-700B can be integrated into existing SSCNET III lines but cannot directly share the same network loop with older SSCNET II or newer SSCNET III\/H devices without using compatible gateway interfaces or configuring the master controller (e.g., Q-Series Motion CPU) for legacy mode compatibility. If retrofitting to MR-J4 series hardware, use the MR-J4-700B-RJ amplifier running in J3 compatibility mode.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.25rem;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eGiven its 7.0 kW power output, this amplifier generates considerable heat during continuous deceleration profiles. If the internal regenerative braking resistor capacity is exceeded, the unit will trip with \u003cstrong\u003eAL.30 (Regenerative Error)\u003c\/strong\u003e. For high-inertia operations, installing an external regenerative option (such as the MR-RB5E or MR-RB137) is highly recommended. Always verify the cooling clearance: a minimum of 40 mm spacing is mandatory on both sides of the drive enclosure to avoid localized thermal pocketing.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.25rem;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003ePay strict attention to the SSCNET III optical fiber cables (MR-J3BUS). They are highly sensitive to physical stress. Maintain a minimum bend radius of 25 mm. Sharp kinks or pinching will attenuate the light signal, leading to intermittent \u003cstrong\u003eAL.37 (Parameter Error \/ Communication Error)\u003c\/strong\u003e faults that are notoriously difficult to diagnose in field environments.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"margin: 0; font-weight: bold; color: #9b2c2c;\"\u003eCRITICAL WARNING: HIGH VOLTAGE RISK\u003c\/p\u003e\n  \u003cp style=\"margin: 0.5rem 0 0 0; color: #2d3748; font-size: 0.9rem;\"\u003eEnsure main and control power supplies are completely disconnected and locked out before initiating wiring. Wait at least 20 minutes after de-energizing to allow internal high-capacity bus capacitors to discharge. Verify the DC bus voltage across terminals P+ and N- is below 20 V using a verified voltmeter before touching any electrical terminals.\u003c\/p\u003e\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    \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; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 2px;\"\u003eMount the unit vertically onto a flat, metal panel plate. Ensure clean, conductive grounding contact through the mounting chassis screws to the backplane.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 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; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 2px;\"\u003eWire the power inputs: connect L1\/L2\/L3 to the main 3-phase line, and L11\/L21 to the separate control supply. Install a molded case circuit breaker (MCCB) and an electromagnetic contactor (MC) for system safety.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 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; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 2px;\"\u003eConnect the motor output lines (U, V, W) directly to the servo motor power terminals. Never wire utility AC mains directly to U\/V\/W as this instantly destroys the internal IGBT output module.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 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; flex-shrink: 0;\"\u003e4\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748; padding-top: 2px;\"\u003eInsert the CN2 encoder connector until the locking tabs snap firmly into place. Connect the SSCNET III optical fiber cables to CN1A (and CN1B if in a daisy chain configuration). Keep optical dust covers on all unused ports.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Mitsubishi Electric","offers":[{"title":"Default Title","offer_id":53102123123051,"sku":"MR-J3-700B","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/MR-J3-700B-saszxwxyrk0.png?v=1776137855","url":"https:\/\/www.plcprotech.com\/pt\/products\/mitsubishi-electric-mr-j3-700b-melservo-j3-servo-amplifier","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}