Lenze EVS 9300 series, System Manual

Page: 141 / 504

Configuration
Basic configurations
8.2.3 Master frequency coupling
8-15
L
EDSVS9332S-D11 EN 3.0
Phase offset
Via C0252 a fixed phase offset can be added to the setpoint of the drive. This can be set in the range
±245760000 inc.
Reference:
see phase trimming
Phase adjustment
In some applications it is necessary that the phase leads or lags with increasing speed. For this, an
adjustment of ±1/2 revolution can be entered under C0253. The phase adjustment set is reached at
15000 rpm (linear connection).
QSP at the master
If QSP is set at the master drive, the setpoint (C0050)for all drives is decelerated along the QSP ramp.
The complete drive system can thus be stopped, led by the QSP integrator. If QSP is cancelled before
the drives come to a standstill, the drive system starts to decelerate or accelerate with the value in
C0050 to the speed setpoint at the setpoint integrator.
Unlike the configuration 5900, the phase synchronism between master and slave gets lost in the
configuration 5000.
QSP at the slave 0 (master drive)
If the deceleration ramp is very short and can only be reached with I
max
, the phase synchronism gets
lost. A driftfree standstill is obtained. Switching QSP is a continuous operation for the downstream
slaves so that a reversal is possible if the deceleration ramp set at the master is too short for one of
the slave drives (e. g. to high centrifugal mass for the set deceleration ramp).
CINH at the master
If the master drive is inhibited, the actual value of slave 0 is used as setpoint for the other slaves. This
could bring the entire drive system to a standstill led by the coasting slave 0. If the master is
re-enabled before reaching the standstill, the drive system starts to accelerate with the actual speed.
When setting CINH, the phase difference is set to zero.