Manual - Famco

Chapter 6 - Parameter Description [FU1]Output Voltage100%80%minute when 150% of rated motor current established inFU2-33 flows for one minute.☞ Note: The set value is the percentage of FU2-33 [RatedMotor Current].FU1► ETH cont52 120 %52120Reference Frequency(Steady Speed)[When Energy Save Level is set at 20%]OutputFrequency☞ Note: This function is not recommended for a large loador for an application that need frequent acceleration anddeceleration.☞ Note: This function does not work when ‘Sensorless’ isselected in FU2-40 [Control Mode].Factory Default: 120 % 120This is the current at which the motor can runcontinuously. Generally, this value is set to ‘100%’ andwhich means the rated motor current set in FU2-33. Thisvalue must be set less than FU1-52 [ETH 1min].☞ Note: The set value is the percentage of FU2-33 [RatedMotor Current].Load Current [%]FU1-50: Electronic Thermal (Motor i 2 t) SelectionFU1-51: Electronic Thermal Level for 1 MinuteFU1-52: Electronic Thermal Level forContinuousFU1-53: Electronic Thermal Characteristic(Motor type) selectionFU1-51[ETH 1min]FU1-52[ETH cont]1 minuteTrip TimeThese functions are to protect the motor fromoverheating without using additional thermal overloadrelay. Inverter calculates the temperature rising of themotor using several parameters and determines whetheror not the motor is overheated. Inverter will turn off itsoutput and display a trip message when the electronicthermal feature is activated.FU1► ETH select50 --- No ---50Factory Default: No 0This function activates the ETH parameters by setting‘Yes’.FU1► ETH 1min51 180 %51This is the reference current when the inverterdetermines the motor has overheated. It trips in one0180Factory Default: 180 % 180FU1► Motor type53 Self-cool[Motor i 2 t Characteristic Curve]53Factory Default: Self-cool 0To make the ETH function (Motor i 2 t) work correctly, themotor cooling method must be selected correctlyaccording to the motor.[Self-cool] is a motor that has a cooling fan connecteddirectly to the shaft of the motor. Cooling effects of aself-cooled motor decrease when a motor is running atlow speeds. The motor current is derated as the motorspeed decreases.[Forced-cool] is a motor that uses a separate motor topower a cooling fan. As the motor speed changes, thecooling effect does not change.095