Question:
How can a coasting motor be started, e. g. a blower drive with an 8200vector frequency inverter?
Answer:
When the function 'flying circuit' is used, the 8200vector frequency inverter can be started into a coasting motor with high inertia of masses.
When the flying circuit is activated (start option C0142 = 2 or 3) a rotating field frequency (selection flying behaviour C0143 = 0 or 1) is started into the motor after controller enabling, and it is continuously reduced. During the searching process only a low circuit is allowed.
When the motor speed is detected, in case of this frequency the suitable motor voltage is set and the acceleration process according to the determined setpoint is started (at the acceleration ramps C0012/C0013).
Important preconditions for a successful flying of the drive:
1. The start frequency of the searching process is higher than the belonging speed of the coasting motor.
2. The direction of rotation of the flying circuit corresponds to the motor's direction of rotation.
