Group 70 — Protective FunctionsMVX9000 User Manual 5-57Descriptions ofParameter SettingsFigure 5-49: I 2 t Curves70.08Electronic ThermalMotor OverloadRange: 30 to 300 seconds Default: 60 secUnit: 1 secondsThis parameter can be set during operation.The parameter determines the time required to activate the I2telectronic thermal motor overload function. Figure 5-49shows I2t curves for 150% output power for 1 minute.70.09Auto VoltageRegulation (AVR)Range: Default: 0000 AVR function enabled01 AVR function disabled02 AVR function disabled during deceleration03 AVR function disabled upon a stop commandThe AVR function automatically regulates the AC drive’soutput voltage to meet the value set in 50.06 (MotorNameplate Voltage).Example: If 50.06 is set at 200V AC and the input voltage isvarying between 200V to 264V AC, the drive’s output voltagewill automatically be limited to 200V AC.Without AVR function, the Motor Nameplate Voltage mayvary between 180V to 264V AC, due to the input voltagevarying between 180V to 264V AC.Selecting value 2 enables the AVR function and also disablesthe AVR function during deceleration. This offers a quickerdeceleration and is most commonly used.Overload %Time(Min)100 120 140 160 180 200Overload Endurance Curve302826242220181614121086420Load Factor %OperationTime(Min)0 20 60 100 140 18040 80 130 160 200543215 Hz10 Hz50 Hz60 Hzor More
