Commissioning
Optimising the operating behaviour
Boost correction with V/f characteristic control
6
6.11
6.11.3
6.11−8
EDSVF9383V EN 6.0−11/2009
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
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
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