KEB COMBIVERT F5 BASIC Applications Manual page 164

Functional Description
S-curve time
Fig. 6.4.6.a S-curve time
+f [Hz]
70
0
oP.32 oP.32
oP.28
70
-f [Hz]
*1 If the value „For" is adjusted in these parameters (for rotation direction reverse), then the values adjusted in the parameters
for rotation direction forward are valid.
*2 If the value „=Acc" is adjusted, then the value for acceleration forward (oP.28) is valid.
*3 If the value „=Acc" is adjusted in parameter oP.34, then the value adjusted in parameter oP.32 is valid for all S-curve times.
Value „0" switches the corresponding S-curve off.
Example for acceleration with
rotation direction forward
Chapter Section Page
6 4 14
For some applications it is of advantage if the drive starts and stops nearly jerk-
free. This function is achieved by straightening the acceleration and deceleration
ramps. The straightening time, also called S-curve time, can be preadjusted with
the parameters oP.32...oP.35. But S-curves are excecuted only with the adjustment
„Ramp with constant rise".
oP.34
oP.30
In order to drive defined ramps with activated S-curve time, the preadjusted
acceleration and deceleration times (oP.28...oP.31) must be larger than the
S-curve time (oP.32...oP.34) belonging to it.
At the beginning and the end of the acceleration ramp a parabolic curve is driven for
the time adjusted in parameter oP.32. As a result the adjusted ramp time is exten-
ded by oP.32.
Date Name: Basis
06.02.02 KEB COMBIVERT F5-G / B
Set Value and Ramp Adjustment
oP.28
oP.29 * 1
oP.30
1
oP.31 *
oP.32 * 2
oP.33 * 1
3
oP.34 *
1
oP.35 *
oP.29
oP.33 oP.33
oP.34
Total acceleration time = oP.28 + oP.32
Acceleration time forward
Acceleration time reverse
Deceleration time forward
Deceleration time reverse
S-curve time acceleration forward
S-curve time acceleration reverse
S-curve time deceleration forward
S-curve time deceleration reverse
oP.31
oP.35 oP.35
© KEB Antriebstechnik, 2002
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