Chapter 12 Descriptions of Parameter SettingsC2000 Plus 
 
12.1-06-7 
 This is a protection for the drive to decrease output frequency automatically when the motor over-
loads abruptly during constant motor operation. 
 If the output current exceeds the setting value for Pr.06-04 when the drive is operating, the drive 
decelerates according to the Pr.06-05 setting to prevent the motor from stalling. The lower limit for 
the over-current stall prevention is determined by the maximum value among 0.5 Hz, Pr.01-07 and 
Pr.01-11. 
 If the output current is lower than the setting value for Pr.06-04, the drive accelerates (according 
to Pr.06-05) again to the setting frequency. 
   
 
06-05 
Acceleration / Deceleration Time Selection for Stall Prevention at Constant 
Speed 
 
 
   
 Default: 0 
 
 
Settings  0: By current acceleration / deceleration time 
1: By the first acceleration / deceleration time 
2: By the second acceleration / deceleration time 
3: By the third acceleration / deceleration time 
4: By the fourth acceleration / deceleration time 
5: By Auto-acceleration / auto-deceleration 
 Set the acceleration / deceleration time selection when stall prevention occurs at constant speed. 
 
06-06 
Over-Torque Detection Selection (OT1) 
 
06-09 
Over-Torque Detection Selection (OT2) 
 
 
   
 Default: 0 
 
 
Settings 
0: No function 
1: Continue operation after over-torque detection during constant speed 
operation 
2: Stop after over-torque detection during constant speed operation 
3: Continue operation after over-torque detection during RUN 
4: Stop after over-torque detection during RUN 
 When you set Pr.06-06 and Pr.06-09 to 1 or 3, a warning message displays, but there is no error 
record. 
 When you set Pr.06-06 and Pr.06-09 to 2 or 4, an error message displays and there is an error 
record.