Commissioning
Before you start
6
l 122
EDS84DG752 EN 7.0
I Tip!
In the Lenze setting, the VFCplus motor control (V/f characteristic control) with
linear characteristic is set in C00006.
ƒ VFCplus is especially suitable for the operation of machines with a linear or
square−law load torque characteristic (e.g. fan).
ƒ The parameters are preset so that, with an inverter that is adapted in terms
of power and a 50 Hz motor, the inverter is ready for operation without
further parameterisation and the motor is working satisfactorily.
Recommendations for the following application cases:
ƒ Inverter and motor differing strongly in terms of power:
– Set code C00022 (I
max
limit in motor mode) to 2×I
rated
motor.
ƒ High starting torque:
– Set code C00016 (Vmin boost) in no−load operation of the motor, so that
the rated motor current is flowing with a rotating field frequency f = 3 Hz
(C00058).
ƒ Noise optimisation:
– Set code C00018 to the value "3" (switching frequency 16 kHz).
ƒ High torque at low speeds (without feedback):
– Select "Vector control" operating mode.
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