YASKAWA V1000 Series

4.4 Basic Parameter Adjustments
142 YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
Program two of the parameters H1-xx to “07” and “7A”. The combination of these
two inputs activates the acceleration/deceleration times as shown below. As the
contacts of the terminals open and close, the following acceleration and
deceleration time combinations are possible:
■ Automatically Switching Acceleration/Deceleration Times
The drive can automatically switch between acceleration and deceleration times.
When the output frequency reaches the value set to C1-11, the drive will switch
acceleration and deceleration times as shown in the graph below. Setting C1-11 to
0.0 Hz disables this function.
Figure 4. 21
Figure 4.21 Accel/Decel Time Switching Frequency
Accel/Decel Time 1
H1- = 7
Accel/Decel Time 2
H1- = 1A
Acceleration Time Deceleration Time
Open (not selected) Open (not selected) C1-01 C1-02
Closed Open (not selected) C1-03 C1-04
Open (not selected) Closed C1-05 C1-06
Closed Closed C1-07 C1-08
Output Frequency
C1-11
A
ccel/Decel Time
Switch Frequency
C1-07
setting
When the output frequency ҈ C1-11, drive uses Accel/Decel Time 1 (C1-01, -02)
When the output frequency < C1-11, drive uses Accel/Decel Time 2 (C1-07, -08)
C1-01
setting
C1-02
setting
C1-08
setting