Lenze EVF9333−xV - Manual (Page 238)

Commissioning
Optimising the operating behaviour
Boost correction with V/f characteristic control
6
6.11
6.11.3
l
6.11−8 EDSVF9333V EN 6.2−04/2012
A motor connected to a controller has a rated motor voltage of 400 V
(C0090 = 400 V). The voltage boost U
min
is set to 2 % (C0016 = 2 %).
ƒ At a voltage boost of 2 % and a rated motor voltage of 400 V,
U
min
= 8 V.
The voltage boost U
min
is to be optimised via C0080:
6 × U
min
3 × U
min
0
0 0.5 0.99
C0080
0
9300vec141
Fig. 6.11−3 Influence of boost correction
0 Maximum correction value when the output frequency is 0 Hz
ƒ When C0080 = 0.5, the maximum correction value is:
3 × U
min
= 3 × 8 V = 24 V
ƒ The maximum voltage boost is:
U
min
+ correction value = 8 V + 24 V = 32 V
Example