Lenze EVF9383 - Manual (Page 165)

Configuration
2−157
l
EDSVF9383V−EXT EN 2.0
2.4.56.1 Ramp function generator
SRFG1-IN
SRFG1-OUT
SRFG1-DIFF
t
t
t
C1040
C1040
C1041 C1041
Fig. 2−136 Characteristic of the ramp function generator
The s−shaped characteristic of the output signal is parameterized via the max. acceleration (C1040)
and the rounding time (C1041).
l The max. acceleration is entered as a percentage, which the output signal is allowed to pass
per second.
l During the rounding time (C1041), from zero acceleration to maximum acceleration (or from
maximum acceleration to zero acceleration), the acceleration changes in a linear way.
– The acceleration characteristic (signal at SRFG−DIFF) in Fig. 2−136 shows the linear rising or
falling of the signal during the rounding time (C1041).
Calculation of the max. acceleration
SRFG1-OUT
w2
w1
SRFG1-IN
C1041
t
ir
C1041
Fig. 2−137 Signal characteristic with jolt−free acceleration
Calculate the necessary max. acceleration for the change between w1 and w2 in the desired time
t
ir
according to the following formula:
C1040
+ W1 * W2
t
ir
* C1041