{"product_id":"industrial-s-m-840db-4-printed-circuit-board-card","title":"Industrial S.M 840DB-4 Printed Circuit Board Card","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\" class=\"PDq2pG_selectionAnchorContainer\"\u003eDescription:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"17\" data-end=\"648\"\u003eThe S.M 840DB-4 \/ S.S. 840DB-4 PCB Card is used in industrial drive and power electronics systems as a switching or control board responsible for regulating motor drive signals, switching frequency control, and power stage coordination in automation equipment. It is commonly installed in \u003ca href=\"https:\/\/plgautomation.com\/collections\/drives-motor-control\"\u003emotor drives\u003c\/a\u003e, servo amplifiers, and industrial inverter systems where controlled switching at 4 kHz frequency is required for stable motor operation and efficient power conversion. Maintenance technicians and drive specialists use this board for repair, replacement, and restoration of variable frequency drive (VFD) or servo control systems.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"650\" data-end=\"667\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"668\" data-end=\"978\"\u003eThe S.M 840DB-4 PCB Card is commonly used in industrial motor drive systems, CNC machines, servo control systems, and automation equipment where switching frequency control (4 kHz operation) is required for regulating motor speed, torque output, and inverter switching performance in S.M \/ S.S drive platforms.\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"980\" data-end=\"1009\" class=\"PDq2pG_selectionAnchorContainer\"\u003eTechnical Specifications:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"1010\" data-end=\"1821\" class=\"\"\u003e• Manufacturer: S.M \/ S.S (OEM industrial drive electronics)\u003cbr data-start=\"1070\" data-end=\"1073\"\u003e• Model \/ Part number: 840DB-4\u003cbr data-start=\"1103\" data-end=\"1106\"\u003e• Product type: Motor drive \/ inverter PCB control board\u003cbr data-start=\"1162\" data-end=\"1165\"\u003e• Switching frequency: 4 kHz\u003cbr data-start=\"1193\" data-end=\"1196\"\u003e• System type: Variable frequency drive \/ servo drive control board\u003cbr data-start=\"1263\" data-end=\"1266\"\u003e• Input type: DC bus \/ control signal interface (system dependent)\u003cbr data-start=\"1332\" data-end=\"1335\"\u003e• Output function: Gate drive \/ switching control for power transistors\u003cbr data-start=\"1437\" data-end=\"1440\"\u003e• Control role: Motor speed and torque regulation via PWM switching\u003cbr data-start=\"1507\" data-end=\"1510\"\u003e• Mounting: Drive chassis internal PCB assembly\u003cbr data-start=\"1557\" data-end=\"1560\"\u003e• Cooling: Enclosed drive system (forced air or heatsink dependent on system design)\u003cbr data-start=\"1644\" data-end=\"1647\"\u003e• Function: Controls switching sequence for motor power conversion and regulation\u003cbr data-start=\"1728\" data-end=\"1731\"\u003e• Application environment: Industrial automation, CNC machinery, and motor drive systems\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"1823\" data-end=\"1847\" class=\"PDq2pG_selectionAnchorContainer\"\u003eCommon Replacements:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp data-start=\"1848\" data-end=\"2119\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• Generic VFD control PCB for equivalent 4 kHz switching drive systems \u003cbr data-start=\"1937\" data-end=\"1940\"\u003e• Siemens SINAMICS drive control board \u003cbr data-start=\"2041\" data-end=\"2044\"\u003e• ABB ACS series inverter control PCB\u003c\/p\u003e","brand":"PLG Automation ","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51714378891566,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_7101c61b-817d-442e-aa3a-579c07201c54.jpg?v=1770424710","url":"https:\/\/plgautomation.com\/products\/industrial-s-m-840db-4-printed-circuit-board-card","provider":"PLG Automation ","version":"1.0","type":"link"}