Acceleration And Deceleration Characteristics; Setting Acceleration And Deceleration Times - YASKAWA Varispeed E7 Instruction Manual And Parameter Description

Acceleration and Deceleration Characteristics

This section explains the acceleration and deceleration characteristics of the Inverter.

Setting Acceleration and Deceleration Times

Acceleration time indicates the time to increase the output frequency from 0% to 100% of the maximum out-
put frequency (E1-04). Deceleration time indicates the time to decrease the output frequency from 100% to
0% of (E1-04). The accel./decel. times 1 are used with the factory setting, the accel./decel. times 2 can be
selected using a multifunction input.
Related Parameters
Con-
stant
Number
C1-01 Acceleration time 1
C1-02 Deceleration time 1
C1-03 Acceleration time 2
C1-04 Deceleration time 2
Acceleration/deceleration time
C1-11
switching frequency
S-curve characteristic time at
C2-01
acceleration start
S-curve characteristic time at
C2-02
acceleration end
Switching Acceleration and Deceleration Time Using Multi-Function Input Terminal
Commands
Two different acceleration times and deceleration times can be set. When one multi-function input terminal
(H1-
time even during operation by changing the ON/OFF status of this terminal.
The following table shows the acceleration/deceleration time switching combinations.
Acceleration/Deceleration Time
Selection 1 Terminal
-16
6
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Name
Sets the acceleration time to accelerate from 0 to the maxi-
mum output frequency.
Sets the deceleration time in seconds for the output fre-
quency to fall from 100% to 0%.
Sets the acceleration time when multi-function input
"Acceleration/deceleration time selection 1" is ON.
Sets the deceleration time when multi-function input
"Acceleration/deceleration time selection 1" is ON.
Sets the frequency at which acceleration/deceleration time
switches automatically.
Less than set frequency: Acceleration/deceleration time 2
Set frequency or above: Acceleration/deceleration time 1
Multi-function input "Acceleration/deceleration time
selection 1" is given priority.
Sets the S-curve characteristic time for each part in sec-
onds.
When you set the S-curve characteristic time, the start time
and end time S-curve characteristic time's acceleration
time is lengthened by 1/2 only.
Run
command
Output frequency
) is set to 7 (acceleration/deceleration time selection 1), you can switch the acceleration/deceleration
OFF
ON
Description
OFF
ON
C2-02
C2-01
Acceleration Time Deceleration Time
C1-01
C1-03
Change
Setting Factory during
Range Setting Opera-
tion
Yes
Yes
0.0 to
10.0 s
6000.0
Yes
Yes
0.0 to
0.0 Hz No
200.0
0.00 to
0.20 s No
2.50
0.00 to
0.20 s No
2.50
Time
C1-02
C1-04
Access
Level
Q
Q
A
A
A
A
A