Function library
Selection of control mode, optimisation of operating behaviour
7−19
L
EDB82MV752 EN 5.2
) Note!
l The flying−restart circuit must not be used if several motors with different rotating
masses are connected to a controller.
l The flying restart method is safe and reliable for drives with great rotating masses.
l With machines with low moments of inertia and small friction, the motor can
restart for a short time or reverse after controller enable.
The controller only searches the given direction of rotation.
The controller calculates the output frequency required for the current speed of the idling
motor, is connected and accelerates the motor until it reaches its setpoint.
Adding a signal (C0143 = 2, C0143 = 3)
The controller adds the output frequency corresponding to the frequency setpoint or the actual
process controller value.
) Note!
The actual process controller value must only be set if a speed−proportional signal is
available in C0412/5!
Tip
If the flying−restart circuit is not required for every drive start, but only after mains reconnection:
Bridge X3/28 with HIGH level and start the controller with the function QSP" (C0142=3 and
C0106=0s).
The flying−restart circuit is now only activated for for the first mains connection.
7.3.2 Controlled deceleration after mains failure/mains disconnection
) Note!
This function cannot be used with a 8200 motec!
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