Lenze EDS4900U-REG - Manual (Page 133)

Configuration
7-42 48XX/49XXSHB0399
QSP at the master
If QSP is switched at the master drive, the set-value (C050) is reduced along the
QSP ramp for all drives. Thus, the complete network of drives can be decelerated
to standstill by the QSP integrator.
If QSP is reset before standstill is achieved, the network of drives starts to
accelerate or decelerate at the set-value integrator with the value set under C050.
QSP at slave 0 (master drive)
If the deceleration ramp is very short and it can only be achieved with I
max
, the
phase synchronism will be lost. With the I
max
message, the set-value integrator
follows the actual phase integrator. Thus, the rotor does not turn back when
reaching n = 0. If the I
max
message is reset, the phase control will be reactivated
and drift-free standstill can be ensured.
The switching of QSP is a continuous operating mode for the connected slaves
so that a reversal is possible, if the deceleration ramp set at the master should be
too short for one of the slaves.
Ctrl. enable at the master
If the master is inhibited, the actual value of slave 0 is used as a set-value for the
other slaves.Thus, the complete network of drives could be decelerated to
standstill by the coasting slave 0.
If the master is enabled before standstill, the network of drives starts to accelerate
with the actual speed at the set-value integrator.
The phase difference is set to zero by switching controller enable.
7.3.2 Slave for digital frequency bar
Purpose
With configuration C005 = -62- or -63- for the set-value bar,
( the phase control, which is preconnected to the speed controller, is
activated and
( the set-value path is changed to digital frequency coupling for phase and
speed synchronous running.
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