Siemens SINAMICS G110D, Operating Instructions Manual

Page: 146 / 224

Functions
6.9 Technological functions
SINAMICS G110D
146
Operating Instructions, 07/2016, FW V3.63, A5E36768472B AB
6.9.3.2 Flying restart
Description
NOTICE
Parameter P1215
If the parameter P1215 is active, that is, P1215=1 then the flying restart function will not
work. P1215 must be disabled (P1215=0) to ensure that the flying restart function operates
correctly.
The "flying restart" function, which is activated by P1200, allows the inverter to be switched
to a rotating motor. The function must be used whenever a motor may still be running. This
could be:
● After a brief line interruption
● When an inverter is shut down but air currents cause a fan impeller to rotate (either CW
or CCW)
● If the motor is driven by a load
This function is useful, therefore, with motors whose load exhibits a high moment of inertia
since it can help prevent sudden loads in the mechanical components.
If this function is not used in such cases, this could cause the motor to shut down due to
overcurrent (overcurrent fault F0001).
The "flying restart" function can be used to synchronize the inverter and motor frequency.
WARNING
Drive starts automatically
When this function is enabled (P1200 > 0), all those working with the system must be
informed of the following:
•
The drive starts automatically.
• Although the drive is at a standstill, it can be started by the search current.