41 
 
0 : Open-Loop V/F Control   
This  method  is  recommended  for  those  applications  without  the  need  of  fast  response, 
accurate speed control.  Select this method also when using a single drive to run more than 
one  motors,  the motor parameters  are unknown  or  Auto-Tuning  cannot be  performed.  The 
speed control range is 1 : 40.   
1 : Sensorlees Voltage Vector Control (SVVC, Open-Loop) 
This method is recommended for those applications which high torque at low speed and quick 
torque response without any speed feedback signal from the motor during speed adjustment. 
The speed control range is 1 : 100. 
  A1-03  Reset 
Resets parameter settings to default settings. After resetting parameters, the value will 
automatically set to 0. 
0: N/A 
2520: Resets 2-Wire Sequence / 50Hz / 200V   
2522: Resets 2-Wire Sequence / 50Hz / 220V   
2523: Resets 2-Wire Sequence / 50Hz / 230V   
2620: Resets 2-Wire Sequence / 60Hz / 200V   
2622: Resets 2-Wire Sequence / 60Hz / 220V   
2623: Resets 2-Wire Sequence / 60Hz / 230V 
3520: Resets 3-Wire Sequence / 50Hz / 200V   
3522: Resets 3-Wire Sequence / 50Hz / 220V   
3523: Resets 3-Wire Sequence / 50Hz / 230V   
3620: Resets 3-Wire Sequence / 60Hz / 200V   
3622: Resets 3-Wire Sequence / 60Hz / 220V   
3623: Resets 3-Wire Sequence / 60Hz / 230V 
2538: Resets 2-Wire Sequence/ 50Hz / 380V