KEB COMBIVERT S4 Instruction Manual page 72

Parameter Description
Deceleration Time
GB
Torque Limit
GB 28
The parameter defines the time required to decelerate from rated speed
of the servo system (3000/4000/6000 rpm) to 0 rpm. The behaviour of the
actual deceleration time is proportional to the speed change.
Rated speed [rpm]
3000/
4000/
6000
Deceleration time [s]
CP.8
–––––––––––– = –––––––––––––––––––––
Rated speed
Calculation of deceleration time to be adjusted:
The drive shall decelerate from 3000 rpm to 1000 rpm in 0,05 s!
Rated speed of the drive: 4000 rpm
delta n = 3000 rpm – 1000 rpm = 2000 rpm
actual deceleration time
CP.8 = ––––––––––––––––––––––––– • Rated speed
delta n
0,05s
CP.8 = –––––––––– • 4000 rpm = 0,1 s
2000 rpm
In this example parameter CP.8 must be adjusted to 0,1 s !
then CP.16 and CP.17 without function
The maximum permissible torque of the drive is defined with parameter
CP.9.
M
CP.9
0 Nm
+10 V
0 V
Analog limitation:
Terminals X2.16 / X2.17
Setting range:
Resolution:
Factory setting:
Customer setting:
CP.8
actual deceleration time
delta n
When CP.7 and CP.8 = 0.00 s
Setting range:
Resolution:
Factory setting:
Customer setting:
0...320 s
0,01 s
0,05 s
_____ s
0...5 x M
N
0,1 Nm
3 x M
N
____ Nm