Lenze EVF9383 - Manual (Page 231)

Configuration
Function blocks
Master frequency ramp−function generator (DFRFG)
8
8.2
8.2.4
l
8.2−15 EDSVF9383V EN 7.1−04/2012
(
Stop!
Do not operate the drive with this function at the torque
limitation M
max
, I
max
.
The profile generator creates ramps which automatically compensate the
resulting phase displacement. If you do not need this compensation, set
DFRFG−RESET = HIGH.
t
DFRFG-IN
C0752
C0751 C0751
C0755
DFRFG-SYNC
t
DFRFG-OUT
Fig. 8.2−10 Synchronisation on DFRFG
C0751 Setting the deceleration and acceleration time
C0752 Setting the maximum speed
C0755 Setting the switching point
When the actual angle has reached its setpoint and the output signal
corresponds to the input signal, the drive runs in synchronism and the
output DFRFG1−SYNC is set to HIGH. At the same time the profile generator
is switched to the inactive state.
Fig. 8.2−11 Speed−time diagram DFRFG
The number of increments at DFRFG1−IN (master drive) defines the set
phase. The set phase can be displayed as a path. The speed−time diagram
shows the distance covered (angle) as the area below the speed profile.
When synchronisation is reached, master and slave have covered the same
distance (phase).
Profile generator