Lenze i700

Lenze · i700 servo inverter · reference manual · DMS 3.0 EN · 06/2016 · TD06 160
5 Motor control & motor settings
5.14 Parameterising the V/f characteristic control
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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 (0x2831
or 0x3031 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 (0x2830
or 0x3030 for axis B). As long as the
feedback is not provided, further flying restart processes are not possible.
[5-14] 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 0x2BA3
(or 0x33A3 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 0x2822
(or 0x3022 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 0x2C01:2
(or 0x3401:2 for axis B).
• A flying restart process can be blocked via bit 1 in the Lenze control word (0x2830
or
0x3030
for axis B).