{"product_id":"mitsubishi-electric-fr-f740-45k-cht1-f700-series-energy-saving-inverter","title":"Mitsubishi Electric FR-F740-45K-CHT1 F700 Series Energy Saving Inverter","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eOptimizing energy consumption in heavy-duty pump and fan applications, the \u003cstrong\u003eMitsubishi Electric FR-F740-45K-CHT1\u003c\/strong\u003e variable frequency drive provides precise three-phase speed control within the F700 Series automation architecture. This high-capacity inverter is engineered to maximize system efficiency through advanced optimum excitation control, minimizing electrical losses in induction motors. Note that the FR-F740-45K-CHT1 is now discontinued by the manufacturer; the recommended modern replacement is the \u003cstrong\u003eFR-F840-00930-2-60\u003c\/strong\u003e power-saving frequency inverter, which offers updated control algorithms and physical drop-in compatibility for most fan and blower systems.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimum Excitation Control:\u003c\/strong\u003e Automatically adjusts motor flux to achieve maximum efficiency under variable torque loads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Performance Ratings:\u003c\/strong\u003e Optimized for high-efficiency variable torque application envelopes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated EMC Filter:\u003c\/strong\u003e Built-in radio noise filter helps suppress electromagnetic interference to adjacent instrumentation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced Diagnostics:\u003c\/strong\u003e Monitors lifetime metrics of internal components, including cooling fans and smoothing capacitors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNetwork Integration:\u003c\/strong\u003e Supports integration into standard industrial bus architectures via serial communications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eMunicipal water treatment facilities and booster pumping stations.\u003c\/li\u003e\n  \u003cli\u003eLarge-scale industrial HVAC cooling towers and air handling units (AHU).\u003c\/li\u003e\n  \u003cli\u003eSupply and exhaust ventilation fans in heavy industrial facilities.\u003c\/li\u003e\n  \u003cli\u003eSecondary circulation pumps in manufacturing process cooling loops.\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; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eSpecification Value\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-weight: bold;\"\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 Reference\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eFR-F740-45K-CHT1\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;\"\u003eF700 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;\"\u003eReplacement Part Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eFR-F840-00930-2-60\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eApplied Motor Capacity\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e45 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;\"\u003eRated Capacity\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e64.8 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;\"\u003eRated Output Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e85 A (at 40 degC ambient) \/ 72 A (at 50 degC ambient)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eOverload Current Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e120% for 60 seconds, 150% for 3 seconds (inverse time characteristics)\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 Input Voltage \/ Frequency\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eThree-phase 380 to 480 V AC, 50Hz \/ 60Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eAllowable Voltage Fluctuations\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e323 to 528 V AC (50Hz \/ 60Hz)\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 Methodology\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eV\/F control, Advanced magnetic flux vector control, Optimum excitation control\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;\"\u003eForced air 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;\"\u003eNet Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e35 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;\"\u003e40 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; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eTerminal \/ Pin Label\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; 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-weight: bold;\"\u003eR\/L1, S\/L2, T\/L3\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eThree-phase AC power input terminals\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eU, V, W\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eThree-phase variable frequency output terminals to the motor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eSTF \/ STR\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eStart Forward \/ Start Reverse digital control inputs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eSD\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eCommon terminal for contact input signals (sink) and isolated 24 V DC power common\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eRX \/ TX \/ SG\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eModbus RTU serial RS-485 interface connection points\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;\"\u003eWhen migrating from the discontinued FR-F740-45K-CHT1 to the current-generation FR-F840-00930-2-60, verify the overall envelope size. While both drives are optimized for 45 kW loads, physical terminal block layout structures differ slightly. The F800 series offers superior parameter cloning capability via a built-in USB port, removing the reliance on custom serial communications cables during setup.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThis unit is rated for variable torque systems. Operating it on constant-torque applications (such as cranes or positive displacement pumps) can cause persistent overcurrent trip faults (E.OC1 to E.OC3) on ramp-up. If the fan or pump system exhibits high backdraft or regenerative loads during braking, an external dynamic braking resistor must be specified to prevent DC bus overvoltage trips (E.OV2).\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eTo ensure accurate overload protection, ensure that Parameter 9 (Electronic Thermal O\/L Relay) is programmed to match the exact nameplate full-load current (FLA) of the attached motor rather than the drive’s maximum current rating. Ensure that the logic control jumper (Sink\/Source selector) on the control board is set correctly before landing your control wiring to avoid potential logic circuit damage.\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 WARNING:\u003c\/strong\u003e Hazardous voltages remain present on the internal DC bus capacitors even after primary input power has been isolated. Disconnect all primary power supplies and verify that the charge lamp is completely off. Wait at least 10 minutes and measure the voltage across terminals P\/+ and N\/- with a calibrated multimeter to confirm it is below 50 V DC before executing any maintenance or wiring.\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;\"\u003eMount the inverter vertically inside a clean, dust-free electrical enclosure. Ensure there is a minimum of 100 mm top and bottom clearance to permit adequate convective airflow from the integrated cooling fans.\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;\"\u003eRoute incoming line power to terminals R\/L1, S\/L2, and T\/L3, and connect the output motor cables directly to terminals U, V, and W. Do not connect line power directly to the output terminals as this will permanently destroy the inverter 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;\"\u003e3\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eTerminate all shielding and ground conductors to the dedicated system ground block. Keep analog speed reference control wiring shielded and physically routed away from noisy motor cables to avoid noise induction.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Mitsubishi Electric","offers":[{"title":"Default Title","offer_id":53102126137707,"sku":"FR-F740-45K-CHT1","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/fr-f740-45k-cht1-j0cmjgn2oky.png?v=1776137505","url":"https:\/\/www.plcprotech.com\/products\/mitsubishi-electric-fr-f740-45k-cht1-f700-series-energy-saving-inverter","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}