{"product_id":"delta-electronics-vfd055m21a-vfd-m-series-variable-frequency-drive","title":"Delta Electronics VFD055M21A VFD-M Series Variable Frequency Drive","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEngineered for high-precision speed and torque regulation in compact industrial systems, the Delta Electronics VFD055M21A micro drive provides versatile sensorless vector control within the reliable VFD-M Series framework. This module delivers robust control characteristics and features built-in Modbus serial communications for seamless integration into distributed control networks. Featuring a highly efficient heat-dissipation design and a user-friendly programming interface, this drive balances heavy-duty performance with a compact physical footprint, making it ideal for automated manufacturing lines, fan networks, and conveying equipment.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\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\u003eAdvanced Control Algorithms:\u003c\/strong\u003e Features dual sensorless vector and adjustable V\/F curve profiles for high starting torque and precise velocity control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Carrier Frequency Range:\u003c\/strong\u003e Adjustable carrier frequency from 1 to 15 kHz to minimize acoustic motor noise and optimize system efficiency.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Communication:\u003c\/strong\u003e Built-in RS-485 communication port supporting standard Modbus RTU\/ASCII protocols for clean system integration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDynamic Braking:\u003c\/strong\u003e Built-in braking chopper allows direct connection of an external braking resistor for rapid deceleration and stopping.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomated Tuning:\u003c\/strong\u003e Features intelligent auto-tuning capabilities to match motor winding parameters for optimal torque delivery.\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 packaging and filling machinery requiring rapid acceleration\/deceleration.\u003c\/li\u003e\n  \u003cli\u003eConveyor and material handling systems with varying payload demands.\u003c\/li\u003e\n  \u003cli\u003eIndustrial fan systems and centrifugal pump operations.\u003c\/li\u003e\n  \u003cli\u003ePrecision woodworking equipment and small machine tool spindles.\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; border: 1px solid #e2e8f0;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eDelta Electronics\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eVFD055M21A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eSeries\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eVFD-M Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eRated Output Capacity\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3.8 kVA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eRated Output Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e10 A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eMaximum Output Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3-phase, proportional to input voltage\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eOutput Frequency Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.1 to 400 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; border-right: 1px solid #e2e8f0;\"\u003eCarrier Frequency\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1 to 15 kHz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eRated Input Power Supply\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eSingle-phase \/ 3-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; border-right: 1px solid #e2e8f0;\"\u003eInput Voltage Tolerance\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e+\/- 10% (180 to 264 VAC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eInput Frequency Tolerance\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e+\/- 5% (47 to 63 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; border-right: 1px solid #e2e8f0;\"\u003eCooling Method\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eForced Fan 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; border-right: 1px solid #e2e8f0;\"\u003eNet Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3.2 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; border-right: 1px solid #e2e8f0;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e5.0 kg\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 VFD055M21A is standard within the VFD-M series legacy portfolio. When substituting this unit, closely match the input phase configurations. While this unit can accept both single-phase and three-phase 230V power inputs, utilizing single-phase power requires careful sizing verification of downstream branch protection circuit breakers to handle the higher input line currents (up to 27 A in single-phase applications under high load conditions).\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eSingle-phase incoming power subjects the internal DC link bus capacitors to elevated thermal stress and increased ripple current. Ensure that the drive is operated strictly within the rated 10 A continuous output threshold when powered via a single-phase supply. Maintain side clearances of at least 50 mm when panel-mounting multiple drives in close proximity to prevent hot spots from triggering an over-temperature fault (oH).\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eAlways route the control signal wires (AVI, ACI, and digital control terminals) through a dedicated, shielded conduit separate from the high-power AC supply input (R, S, T) and motor output (U, V, W) lines. Ensure that control common (GND) is not bonded directly to the frame earth ground; the physical chassis earth terminal must be connected to a dedicated, low-impedance ground point (under 100 ohms) to avoid high-frequency noise interference on analog inputs.\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 SAFETY WARNING:\u003c\/strong\u003e De-energize all incoming power lines prior to opening the drive wiring cover. After disconnecting supply power, wait a minimum of 10 minutes to allow the DC bus capacitors to fully discharge. Use a reliable digital multimeter to verify that DC voltage between the + and - terminals is under 36 VDC before initiating any installation, terminal tightening, or wiring procedures.\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; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 10px;\"\u003e1\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003eMount the VFD055M21A drive vertically to a flat, non-flammable backplate within a dust-free, dry enclosure, ensuring adequate clearance above and below for standard convective airflow.\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; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 10px;\"\u003e2\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConnect the single-phase (or three-phase) AC input power lines exclusively to terminals R and S (or R, S, T). Never apply mains voltage to the motor terminals U, V, or W, as this will result in immediate and catastrophic module damage.\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; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 10px;\"\u003e3\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003eRoute shielded, low-capacitance motor cabling between terminals U, V, W and the motor stator terminals. Ensure both the motor frame and the drive ground terminal are securely bonded to a unified system ground bus.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 10px;\"\u003e4\u003c\/div\u003e\n  \u003cp style=\"color: #2d3748; margin: 0;\"\u003eVerify that all control loop terminations (e.g., potentiometer connections or Modbus communication wires) are secure, replace the cover plate, power up the system, and perform an initial motor auto-tune sequence before applying operational mechanical loads.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Delta Electronics","offers":[{"title":"Default Title","offer_id":53102141538667,"sku":"VFD055M21A","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/vfd055m21a-hkiitmugj3s.png?v=1776138050","url":"https:\/\/www.plcprotech.com\/ms\/products\/delta-electronics-vfd055m21a-vfd-m-series-variable-frequency-drive","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}