KEB COMBIVERT S4 Instruction Manual page 71

Acceleration Time
Calculation Example:
The parameter defines the time required to accelerate form 0 rpm to rated
speed of the servo system (3000/4000/6000 rpm). The behaviour of the
actual acceleration time is proportional to the speed change (delta n).
Rated speed [rpm]
3000/
4000/
6000
CP.7
Rated speed
Calculation of acceleration time to be adjusted:
The drive shall accelerate from 100 rpm to 2500 rpm in 0,2 s !
Rated speed of the drive: 3000 rpm
delta n = 2500 rpm – 100 rpm = 2400 rpm
actual acceleration time
CP.7 = ––––––––––––––––––––––––– • Rated speed
delta n
CP.7= –––––––––– • 3000 rpm = 0,25 s
2400 rpm
In this example the parameter CP.7 must be adjusted to 0,25 s !
then CP.16 and CP.17 without function
Parameter Description
Setting range:
Resolution:
Factory setting:
Customer setting:
CP.7
Acceleration time[s]
actual acceleration time
=
0,2s
If CP.7 and CP.8 = 0.00 s
0...320 s
0,01 s
____ s
delta n
GB 27
GB
0,05