KEB COMBIVERT F5 BASIC Applications Manual page 54

Operation
Acceleration time
Deceleration time
S-curve time
Chapter Section Page
4 3
8
The parameter determines the time needed to accelerate from 0 Hz to 100 Hz. The
actual acceleration time is proportional to the frequency change.
100 Hz
–––––– x actual acceleration time = CP.12
delta f
Adjustment range:
Resolution:
Factory setting:
Example: actual acceleration time = 5s; the drive should accelerate from 10 Hz to 60
Hz. delta f = 60 Hz - 10 Hz = 50 Hz
CP.12 = (100 Hz / 50 Hz) x 5 s = 10 s
The parameter determines the time needed to decelerate from 100 Hz to 0 Hz. The actual
deceleration time is proportional to the frequency change.
100 Hz
–––––– x actual deceleration time = CP.13
delta f
Adjustment range:
Resolution:
Factory setting:
At deceleration time = -0,01 see CP.12 (Display: "=Acc")!
Example: actual deceleration time = 5s; the drive should decelerate from 60 Hz to 10
Hz. delta f = 60 Hz - 10 Hz = 50 Hz
CP.12 = (100 Hz / 50 Hz) x 5 s = 10 s
For some applications it is of advantage when the drive starts and stops jerk-free.
This is achieved through a straightening of the acceleration and deceleration ramps.
The straightening time, also called S-curve time, can be adjusted with CP.14.
Adjustment range:
Resolution:
Factory setting:
In order to drive defined ramps with activated S-curve time, the
acceleration and deceleration times (CP.12 and CP.13) must be
adjusted higher than the S-curve time (CP.14).
Date Name: Basis
KEB COMBIVERT F5-G / B
04.12.01
CP - Parameter
100 Hz
0,00...300,00 s
0,01 s
5,00 s
100 Hz
-0,01; 0,00...300,00 s
0,01 s
5,00 s
0,00 (off)...5,00 s
0,01 s
0,00 s (off)
© KEB Antriebstechnik, 2001
All Rights reserved
f
t
CP. 12
f
t
CP. 13