5motor control & motor settings – Lenze i700 User Manual
Page 150
5
Motor control & motor settings
5.14
Parameterising the V/f characteristic control
150
Lenze · i700 servo inverter · Reference manual · DMS 1.5 EN · 03/2014 · TD05
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Flying restart process
If the "flying restart process" function is activated, the flying restart process will start after controller
enable:
1. The i700 servo inverter reports the started flying restart process to the controller via bit 8 in the
Lenze status word (
or
for axis B).
2. If a speed has been found, it is reported to the controller via bit 9 in the Lenze-status word.
3. The controller gives the i700 servo inverter a feedback on the fact that the found speed has been
accepted via bit 0 in the Lenze control word (
for axis B). As long as the
feedback is not provided, further flying restart processes are not possible.
[5-12] Signals during a flying restart process
Parameter setting
A control loop is involved in the flying restart process the controller parameter integration time of
which has to be adapted to the motor in the object
for axis B). For the automatic
calculation of this parameter, the "VFC: Flying restart process controller - calculate controller
parameters" function is available via the object
for axis B).
0x2BA6 | 0x33A6
0x2831 | 0x3031
0x2831 | 0x3031
0x2830 | 0x3030
Bit 0: Flying restart acknowledge
Search...
OperationEnabled
Bit 8: Flying restart running
Bit 9: Flying restart ready
Found velocity
Note!
• The flying restart algorithm requires the motor voltage as exact as possible. Therefore
it is absolutely necessary to predetermine the inverter error characteristic.
Compensating for inverter influence on output voltage
• In addition to the exact motor voltage, the exact stator resistance must also be
known. If the flying restart process does not work as desired, the setting of the stator
resistance is to be slightly adapted in object
(or
for axis B).
• A flying restart process can be blocked via bit 1 in the Lenze control word (
for axis B).