9.2.3 Dene V/f characterisc shape
Various characterisc shapes are available which are described in detail in the following
subchap
ters.
Parameter
Address Name / seng range / [default seng] Informaon
0x2B00
(P302.00)
V/f characterisc shape
(V
/f charac.shape)
•
Seng can only be changed if the inverter is
disabled.
Selecon of the V/f characterisc shape for the adaptaon to dierent
load proles.
0 Linear Linear characterisc for drives with constant load torque over the speed.
4Linear V/f characterisc ^ 145
1 Quadrac Square-law characterisc for drives with a square-law load torque over
the speed.
•
Squar
e-law V/f characteriscs are preferably used for centrifugal
pumps and fan drives.
•
Please always check whether the corresponding applicaon is suitable
for operaon with a square-law V/f characterisc!
•
If y
our pump drive or fan drive is not suitable for operaon with a
squar
e-law V/f characterisc, use the linear V/f characterisc instead.
4Square-law V/f characterisc ^ 146
Conguring the motor control
V
/f characterisc control for asynchronous motor (VFC open loop)
Dene V/f characterisc shape
144