Lenze i950

13.4.3 Dene V/f characterisc shape
For adaptaon purposes to dierent load proles, you can select the shape of the characteris-
c:
Parameter
Address Name / seng range / [default seng] Info
0x2B00 V/f characterisc shape
•
Seng can only be changed if the inverter is inhibi-
t
ed.
Selecon of the V/f characterisc shape for the adaptaon to dierent
load proles.
0 Linear Linear characterisc for drives with constant load torque over the speed.
4Linear V/f characterisc ^ 241
1 Quadrac Square-law characterisc for drives with a square-law load torque over
the speed.
•
Squar
e-law V/f characteriscs are preferably used for centrifugal
pumps and fan drives.
•
Please always check whether the corresponding drive is suitable for
operaon with a square-law V/f characterisc!
•
If y
our pump drive or fan drive is not suitable for operaon with a
squar
e-law V/f characterisc, use the linear V/f characterisc instead.
4Square-law V/f characterisc ^ 241
2 Mulpoint User-denable
characterisc for being adapted to special load proles.
3 Eco Linear characterisc with energy opmisaon in the paral load opera-
onal range.
13.4.3.1 Linear V/f
characterisc
The linear V/f characterisc leads to a constant torque.
13.4.3.2 Square-law V/f characterisc
The square-law V/f characterisc is typically used in heang, venlaon and climate applica-
ons to control the speed of fans and pumps.
Conguring the motor control
V
/f characterisc control for asynchronous motor (VFC open loop)
Dene V/f characterisc shape
241