YASKAWA A1000 Series Technical Manual page 140

5.2 b: Application
The wait time t is determined by the output frequency when the Run command is removed and by the active deceleration
time.
Figure 5.7
Setting 9: Simple Positioning Stop
This method of stopping the motor always decelerates the same distance to stop as shown in
distance S1 is calculated using the maximum output frequency setting E1-04 and the selected deceleration time. If the
drive is stopped from a frequency lower than the maximum speed it keeps the current speed. When the distance traveled
becomes equal to S1 - S2, the drive decelerates to stop using the current deceleration time. The stopping accuracy can be
adjusted using the positioning gain set in parameter d4-12.
Figure 5.8
Max. output
frequency
Run command
b1-04: Reverse Operation Selection
■
For some applications, reverse motor rotation is not appropriate and may cause problems (e.g., air handling units, pumps,
etc.). Setting parameter b1-04 to 1 instructs the drive to ignore any Reverse run commands.
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.
b1-05: Action Selection below Minimum Output Frequency (CLV and CLV/PM)
■
Parameter b1-05 sets the operation when the frequency reference is lower than the minimum output frequency set in
parameter E1-09.
No.
b1-05
140
Run wait time t
Active deceleration time
Min Baseblock Time (L2-03)
Figure 5.7 Run Wait Time Depending on Output Frequency
Normal Deceleration
Motor speed
Deceleration
distance
S1
S2
Set deceleration time
Figure 5.8 Simple Positioning Deceleration
Parameter Name
Reverse Operation Selection
Parameter Name
Action Selection below Minimum Output Frequency
Min output Output frequency
frequency when Stop command
was entered
Simple Positioning
Motor speed
Max. output
frequency
S1
t
Run command
YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual
100%
(Max output
frequency)
Figure
YEG
Deceleration
distance
S1
Set deceleration time
Setting Range
0 or 1
Setting Range
0 to 3
5.8. The stopping
t
Default
0
Default
0