KEB COMBIVERT F5 MULTI Manual De Instrucciones página 50

Parameter description
CP.26 Deceleration time
Co-domain
-0.01...300.00 s
∆n Speed change
∆t Deceleration time for ∆n
GB
CP.27 S-curve time
Co-domain
0.00 (off)...5.00 s
t1 S-curve time (CP.27)
t2 Acceleration time (CP.25)
t3 Deceleration time (CP.26)
+n [rpm]
t1
t2
-n [rpm]
GB - 18
Setting
5.00 s
Example The drive should decelerate from 800 rpm to 300 rpm in 1 s.
Setting Description
0.00 s (off) 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.27.
t1 t1
In order to drive defined ramps with activated S-curve time, the acceleration and deceleration times
(CP.25 and CP.26) must be adjusted higher than the S-curve time (CP.27).
Description
Defines the time needed to accelerate from 1000 to 0 rpm. The actual
deceleration time is proportional to the speed change (∆n). At a
deceleration time of -1 the value from CP.25 is used (Display „=Acc") !
n [rpm]
1000
800
300
0
∆n = 800 rpm - 300 rpm = 500 rpm
∆t = 1 s
∆t
CP.26 = –––– x 1000 rpm = –––––––– x 1000 rpm = 2 s
∆n
t2
t1
t1
t3
∆ t
∆ n
t [s]
0,5 1 1,5 2
CP.26
1 s
500 rpm
t3
t1 t1 t1
t [s]