Omron VARISPEED E7 User Manual page 155

Switching Acceleration and Deceleration Time Automatically
Use this setting when you want to switch acceleration/deceleration time automatically using the output fre-
quency.
When the output frequency reaches the set value in C1-11, the Inverter switches the acceleration/deceleration
time automatically as shown in the following diagram.
Set C1-11 to a value other than 0.0 Hz. If C1-11 is set to 0.0 Hz, the function will be disabled.
Acceleration/
deceleration
switching frequency
(C1-11)
Entering S-curve Characteristics in the Acceleration and Deceleration Time
By performing acceleration and deceleration using an S-curve pattern, you can reduce shock when starting and
stopping the machine.
6
Two S-curve characteristic times can be set: At acceleration start and at acceleration end. For deceleration start
and end the S-curve times are fixed to 0.2 sec.
INFO
16
6-
Output frequency
time
C1-03 C1-01
When output frequency ≥ C1-11, acceleration and deceleration are performed using
Acceleration/deceleration Time 1 (C1-01, C1-02).
When output frequency < C1-11, acceleration and deceleration are performed using
Acceleration/deceleration Time 2 (C1-03, C1-04).
Fig 6.17 Acceleration/deceleration Time Switching Frequency
When S-curve is set, calculate acceleration/deceleration time as follows:
C2-01 + C2-02
Accel.Time = ----------------------------------- -
2
Decel. Time = 0.2 s + C1-02/04
C1-02 C1-04
+ C1-01/03/05/07