YASKAWA GA700 Technical Manual page 598

11.3 b: Application
■
b1-05: Operation Below Minimum Freq
No.
Name
(Hex.)
b1-05 Operation Below
Minimum Freq
(0184)
0 : Operate at frequency reference
The drive operates the motor according to the frequency reference, even if the frequency reference falls below the
value set in E1-09.
If the motor speed falls below or is equal to the value set in b2-01 [DC Injection/Zero SpeedThreshold] after the
Stop command is entered (or the Run command is switched OFF), then the drive will perform Zero Speed Control
for the time set in b2-04 [DC Inject Braking Time at Stop] before shutting off its output.
1 : Baseblock (motor coasts)
The drive shuts off its output and the motor coasts to stop when the frequency reference falls below the value set
in E1-09. 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.
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.
3 : Operate at zero speed
The drive performs Zero Speed Control when the frequency reference falls below the value set in E1-09.
598
V/f CL-V/f OLV CLV AOLV
Sets the operation to perform when the frequency reference falls below the
value set in E1-09 [Minimum Output Frequency].
Figure 11.18 Operate at the Frequency Reference
Figure 11.19 Baseblock (Motor Coasts)
Figure 11.20 Operate at Minimum Frequency
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Default Setting
(Range)
0
(0 - 3)