{"product_id":"mitsubishi-electric-qd77ms4-melsec-q-series-simple-motion-module","title":"Mitsubishi Electric QD77MS4 MELSEC Q Series Simple Motion Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eManaging complex positioning profiles and multi-axis synchronization within the MELSEC Q Series architecture is the primary role of the \u003cstrong\u003eMitsubishi Electric QD77MS4\u003c\/strong\u003e Simple Motion Module. This high-density module provides control over up to \u003cstrong\u003e4 independent or synchronized axes\u003c\/strong\u003e, utilizing the noise-immune, high-speed \u003cstrong\u003eSSCNET III\/H\u003c\/strong\u003e fiber-optic network. By implementing high-speed operation cycles, it guarantees fast response times and precise coordinate tracking in complex industrial machinery.\u003c\/p\u003e\n\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEngineers can easily configure advanced motion profiles including Point-to-Point (PTP) positioning, linear and circular interpolation, speed-torque control transitions, and electronic cam profiling directly via GX Works programming software. The physical integration consumes a minimal footprint on the base rack, occupying only 32 standard I\/O points.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eMulti-axis motion control support for up to 4 axes over a single SSCNET III\/H link.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eUltra-fast execution cycles of 0.88 ms or 1.77 ms for high-speed dynamic tracking.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eFlexible unit configuration enabling independent axis programming in millimeters, inches, degrees, or pulses.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eAdvanced transition modes including speed-position and position-speed switching, as well as dedicated speed-torque control.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eHigh-durability flash memory supporting up to 100,000 write operations for persistent parameter storage.\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; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eHigh-speed packaging, cartoning, and continuous horizontal\/vertical form-fill-seal machinery.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eSynchronized rotary cutters, flying shears, and precise material winding systems.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eMulti-axis pick-and-place gantry systems and automated component insertion stations.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.25rem;\"\u003eMaterial handling systems requiring strict speed-torque regulation for tension control.\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; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d;\"\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold; color: #1a365d;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold; color: #1a365d;\"\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: 8px; font-weight: bold;\"\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 Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eQD77MS4\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;\"\u003eMELSEC Q Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eModule Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eSimple Motion Module\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eNumber of Control Axes\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e4 axes\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOperation Cycle\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0.88 ms \/ 1.77 ms\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 Modes\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003ePTP (Point To Point), linear interpolation (up to 4 axes), circular interpolation (2 axes), speed, speed-position, position-speed, speed-torque\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 Units\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003emm, inch, degree, PLS\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOccupied I\/O Points\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e32 points (Intelligent function module assignment)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInternal Current Consumption (5 VDC)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0.6 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;\"\u003eFlash ROM Write Capacity\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eMax. 100,000 writes\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eModule Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0.16 kg\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;\"\u003e1.50 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;\"\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; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d;\"\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold; color: #1a365d;\"\u003ePort \/ Connection\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold; color: #1a365d;\"\u003eInterface Specification \/ 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;\"\u003eSSCNET III\/H Port\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eHigh-speed fiber optic connection (150 Mbps) for direct communication with MR-J4 servo amplifiers.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eExternal Input Connection\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eMulti-pin front connector for external command signals (such as limit switches, proximity, and stop signals).\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 QD77MS4 acts as a functional transition path from older QD75 series modules. Note that because it utilizes the SSCNET III\/H fiber optic network protocol, it cannot be directly wired via analog or traditional pulse trains to old-generation servo drives. It requires compatible SSCNET III\/H compliant servo amplifiers (such as the MELSERVO MR-J4 series) to operate correctly.\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;\"\u003eWhen routing the fiber-optic cables (SSCNET III\/H), ensure the minimum bending radius of the fiber lines does not drop below 25 mm. Exceeding this limit will cause signal attenuation, leading to intermittent communications failures and triggering motion faults (often manifesting as axis dropouts). Additionally, ensure unused ports are covered with dust caps to prevent optical performance degradation.\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;\"\u003eAlways match the station numbers assigned via rotary switches on the physical MR-J4 servo amplifiers with the hardware axes configured in the GX Works Simple Motion Module Setting Tool. Misalignment will prevent synchronization during start-up, triggering card initialization errors.\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: 12px; margin-bottom: 1.5rem;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 0.25rem;\"\u003eCRITICAL WARNING\u003c\/strong\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003eIsolate and lock out all external power sources before installing or removing modules from the PLC chassis. Failure to do so can result in electrical shock, physical damage to the backplane connectors, or module failure due to transient voltage surges.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; margin-right: 12px; font-weight: bold;\"\u003e1\u003c\/span\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003ePower down the entire system rack and verify zero voltage using an appropriate industrial tester.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; margin-right: 12px; font-weight: bold;\"\u003e2\u003c\/span\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003eAlign the lower hook of the QD77MS4 module with the mounting slot on the MELSEC Q base unit and press the module firmly onto the backplane connector until it clicks.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; margin-right: 12px; font-weight: bold;\"\u003e3\u003c\/span\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003eSecure the module lock-screw to ground the metal chassis to the backplane frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; margin-right: 12px; font-weight: bold;\"\u003e4\u003c\/span\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003eConnect the SSCNET III\/H fiber optic cables until they click firmly into the optical terminal ports.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mitsubishi Electric","offers":[{"title":"Default Title","offer_id":53102133117291,"sku":"QD77MS4","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/qd77ms4-agigyq3kowh.png?v=1776138003","url":"https:\/\/www.plcprotech.com\/pt\/products\/mitsubishi-electric-qd77ms4-melsec-q-series-simple-motion-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}