Lenze MC3000 Series - Manual (Page 55)

13435743_EDBM301_v14 .0 51
FX BOOST FACTORY DEFAULT SETTINGS
HP
FACTORY
DEFAULT
HP
FACTORY
DEFAULT
0 .25 - 1 5 .30 % 15 2 .20 %
1 .5 - 2 4 .40 % 20 2 .00 %
3 3 .60 % 25 1 .80 %
5 3 .00 % 30 1 .60 %
7 .5 2 .70 % 40 1 .20 %
10 2 .40 % 50 - 60 0 .80 %
The diagram below illustrates how FX BOOST alters the V/Hz ratio to increase motor
torque .
The FX BOOST setting represents the amount of boost at 0 Hz (approximately 15% in the
example below), and as the output frequency approaches 30 Hz, the boost decreases to
zero . Therefore, at 30 Hz and above, the V/Hz ratio returns to its “normal” state .
OUTPUT FREQUENCY (Hz)
OUTPUT VOL
TA
GE
(%)
FX BOOST
CONSTANT V/Hz
10 20 30 40 50 60
10
20
30
40
50
60
70
80
90
100
22 TORQUE (TORQUE CURVE SELECTION)
This parameter is used to select whether the output of the drive follows a constant or
variable V/Hz curve . The following selections are available:
CONSTANT Use for constant torque applications to optimize torque .
VARIABLE Use for variable torque applications to optimize energy savings .
CT / NOCMP Use for constant torque applications that require full overload
capacity at low speeds (refer to Parameter 17 - MOTOR OL) .