ABB ACS 160 User Manual page 90

100
Figure 17 Underload curve types. T
motor.
80
T
M
(%)
80
60
40
20
0
nominal torque of the motor,
M
3
2
1
5
4
2.4 * ƒ
ƒ
N
ƒ
N
70 %
50 %
30 %
N
nominal frequency of the
ACS 160 User's Manual