YASKAWA GA700 Series Technical Manual page 648

12.3 b: Application
Figure 12.19 Operate at the Frequency Reference
1 : Baseblock (Motor Coasts)
If the frequency reference is less than the value set in E1-09, the drive stops motor voltage output and the motor
coasts to stop. If the motor speed is less than or equal to the value set in b2-01, the drive will do Zero Speed
Control for the time set in b2-04.
Figure 12.20 Coast to Stop
2 : Operate at Minimum Frequency
The drive operates the motor at the minimum frequency reference set in E1-09 when the frequency reference falls
below the value set in E1-09 and the Run command is still enabled.
The drive decelerates the motor when the Stop command is entered (or when the Run command is switched OFF).
If the motor speed falls below or is equal to the value set in b2-01, then the drive will perform Zero Speed Control
for the time set in b2-04.
Figure 12.21 Operate at Minimum Frequency
3 : Operate at Zero Speed
The drive performs Zero Speed Control when the frequency reference falls below the value set in E1-09.
When you enter the Stop command (or when you turn OFF the Run command), the drive does Zero Speed Control
again for the time set in b2-04.
Figure 12.22 Operate at Zero Speed
648 YASKAWA SIEPC71061705H GA700 Series Technical Manual