KEB COMBIVERT S4 Instruction Manual page 30

8. Parameter Description
Current Torque
Setpoint Speed Display
Acceleration Time
Calculation Example:
E 30
Indication of the current torque in newtonmeter.
Resolution: 0,1 Nm
Indication of preset setpoint speed in U/min.
Resolution: 0,5 U/min
Positive speed: Rotation "forward" or no sense of rotation
Negative Speed: Rotation "reverse"
The parameter defines the time required to accelerate form 0 U/min to rated speed
of the servo system (3000/4000/6000 U/min). The behaviour of the actual
acceleration time is proportional to the speed change (delta n).
Rated speed [U/min]
3000/
4000/
6000
CP.7
Acceleration time [s]
CP.7
–––––––––––– = –––––––––––––––––––––
Rated speed
Calculation of acceleration time to be adjusted:
The drive shall accelerate from 100 U/min to 2500 U/min in 0,2 s !
Rated speed of the drive: 3000 U/min
delta n = 2500 U/min – 100 U/min = 2400 U/min
actual acceleration time
CP.7 = –––––––––––––––––––––––––
delta n
CP.7= ––––––––––
2400 U/min
In this example the parameter CP.7 must be adjusted to 0,25 s !
If CP.7 and CP.8 = 0.00 s
then CP.16 and CP.17 without function
Setting range:
Resolution:
Factory setting:
Customer setting:
actual acceleration time
delta n
• Rated speed
0,2s
• 3000 U/min = 0,25 s
0...320 s
0,01 s
0,05 s
s