System Manual – MOVIDRIVE® compact Drive Inverters
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Operating modes
Parameters
VFC 1 / 2 & Flying
start
The flying start function lets you synchronize the inverter to a motor that is already run-
ning. In particular used with drives that are not braked actively, which run on for a long
time or which are turned by a flowing medium, e.g. pumps and fans. The maximum flying
start time is approx. 200 ms.
If the inverter does not detect a trap point, it assumes a motor at rest and starts the in-
tegrator at n = 0. This process is characterized by braking of the motor to n = 0 and sub-
sequent acceleration to n
setpt
. This behavior may arise in particular with very low resis-
tance motors in the speed range below n=300 1/min (4-pole motor).
01308CEN
Figure 55: VFC & flying start function
DANGER!
Risk of crushing if the motor starts up unintentionally in hoist applications.
Severe or fatal injuries.
•
Do not use the flying start function in hoist applications!
•
Ensure that the motor cannot start unintentionally.
NOTE
The flying restart function does not function if there is an output filter connected to the
inverter.
P6..
P60.
P600
Summary of Contents for MOVIDRIVE compact MCH41A
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