Drive output voltage interrupted
Run Command
Output Voltage
Motor Rotations
ON
OFF
Figure 4.12 Coast to Stop
Note: 1. After entering a stop command, the drive will not accept another run command until the time set passes.
2. Do not enter another run command until the motor comes to a complete stop. If a run command must
be entered before the motor has fully stopped, use DC Injection to slow the motor or catch the motor
before restarting.
u
Acceleration/Deceleration: C1-01 to C1-04
C1-01 (Acceleration Time 1) sets the time to accelerate from 0 to the maximum output
frequency (E1-04). C1-02 (Deceleration Time 1) sets the time to decelerate from maximum
output frequency to 0.
No. Parameter Name Description
Setting
Range
Default
C1-01
<1>
Acceleration Time 1
Sets the time to accelerate from 0 to 100% (maximum
output frequency).
0.0 to
6000.0
10.0 s
C1-02
<1>
Deceleration Time 1
Sets the time to decelerate from 100% (maximum output
frequency) to 0%.
<1> The parameter can be changed during run.
WARNING! Sudden Movement Hazard. Rapid deceleration may cause the drive to fault on an overvoltage
condition, resulting in death or serious injury due to an uncontrolled motor state. Set an acceptable
deceleration time in parameter C1-09 when using the Fast-stop feature.
n
Switching Accel/Decel Times with Digital Input Terminals
Two acceleration / deceleration times can be
selected using one of the digital input terminals
S1 through S5.
Program one of the parameters H1-01 through H1-05 to “07” (Accel/Decel Time). Opening
or closing the digital input changes the accel/decel times as shown below:
Accel/Decel Time
H1-oo = 7
Acceleration Time Deceleration Time
Open (not selected) C1-01 C1-02
4.5 Basic Operation
92
YASKAWA ELECTRIC TOEP C710606 25B YASKAWA AC Drive J1000 Installation & Start-Up Manual
2/6/2008-14:44
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