4-2 Function Mode AVR Function •This function outputs voltage to the motor correctly even if the incoming voltage to the Inverter fluctuates. With this function, output voltage to the motor is based on that set in the AVR voltage selection. 4 •With A081 (AVR selection), set whether to enable or disable this function. •Note that the Inverter cannot output voltage beyond that of the incoming voltage. •To avoid a possible overcurrent trip during deceleration, set the AVR selection to "Always ON" (A081: 00). Functions Automatic Energy-saving Operation Function This function automatically adjusts the Inverter output power to a minimum during constant speed operation.
This is suitable for the load of reduced torque characteristics, such as a fan and pump. •To operate with this function, set the RUN mode selection (A085) to 01. You can adjust the response and accuracy in the energy-saving response/accuracy adjustment (A086). •Controls the output power at a comparatively slow rate. Should rapid load fluctuation like impact load occur, the motor may stall, resulting in an overcurrent trip. 4-23 Parameter No. Function name Data Default setting Unit A081 AVR selection 00: Always ON 01: Always OFF 02: OFF during deceleration 02 ⎯ A082 AVR voltage selection 200-V class: 200/215/220/230/240 400-V class:
380/400/415/440/460/480 200/400 ⎯ Related functions d004, A001, A005 Parameter No. Data Description Note A081 00 Always ON Enabled during acceleration, constant speed operation, and deceleration. 01 Always OFF Disabled during acceleration, constant speed operation, and deceleration. 02 OFF during deceleration Disabled only during deceleration in order to reduce the energy regenerated to the Inverter by increasing the motor loss. This will avoid a possible trip due to regeneration during deceleration. Parameter No. Function name Data Default setting Unit A085 RUN mode selection 00: Normal operation 01:
Energy-saving operation 00 ⎯ A086 Energy-saving response/ accuracy adjustment 0 to 100% 50 % Parameter No. Data Response Accuracy Energy-saving effect A086 0 100 Slow Fast High Low Small Large