YASKAWA AC Drive-A1000 Technical Manual page 130

5.2 b: Application
n b1-04: Reverse Operation Selection
Enables and disables Reverse operation. For some applications, reverse motor rotation is not appropriate and may cause
problems (e.g., air handling units, pumps, etc.).
No.
b1-04
Setting 0: Reverse operation enabled
Possible to operate the motor in both forward and reverse directions.
Setting 1: Reverse operation disabled
Drive disregards a Reverse run command or a negative frequency reference.
n b1-05: Action Selection below Minimum Output Frequency (CLV and CLV/PM)
Note: PM motor control modes are not available on 600 V class drives, CIMR-Ao5oooooooo.
Sets the operation when the frequency reference is lower than the minimum output frequency set in parameter E1-09.
No.
b1-05 Action Selection below Minimum Output Frequency
Setting 0: Follow the Frequency Reference
The drive adjusts the motor speed following the speed reference, even if the frequency reference is below the setting of
parameter E1-09. When the Run command is removed and the motor speed is smaller than the setting of b2-01, Zero Speed
Control (not position lock) is performed for the time set in parameter b2-04 before the drive output shuts off.
Setting 1: Coast to Stop
The motor starts when the frequency reference exceeds the parameter E1-09 setting. When the motor is running and the
frequency reference falls below E1-09, the drive output shuts off and the motor coasts. When the motor speed falls below the
zero speed level set in b2-01, Zero Speed Control is activated for the time set in b2-04.
130
Run wait time t
Active deceleration time
Min Baseblock Time (L2-03)
Min output
frequency
Figure 5.7 Run Wait Time Depending on Output Frequency
Parameter Name
Reverse Operation Selection
Parameter Name
Run OFF ON
Command
Frequency
reference
IM: Initial Excitation
PM: Zero Spd. Contr.
Motor
b2-03
Speed
Zero Speed Time at Start
Figure 5.8 Run at the Frequency Reference
Output frequency
when Stop command
was entered
E1-09 Min.
Frequency
Zero Speed
Control
E1-09
b2-01 Zero
Speed Level
Zero Speed Time at Stop
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
100%
(Max output
frequency)
Setting Range
0, 1
Setting Range
0 to 3
Zero Speed
Control
b2-04
Default
0
Default
0