Setting
up Compax3
C3I20T11 / C3I32T11
186
192-120103 N13 C3I20T11 / C3I32T11 December 2010
Saturation behavior
The saturation of the main field inductance can be considered with the help of the
following characteristic.
Activate the "consider saturation values" checkbox.
L
Hmax
/% v. L
H
Pb[%] (Sbeg)
z.B. 70%
I
mR
/ % v. I
mRN
100% (Send)
100%
Pa[%]
(Lhmax)
z.B 160%
1)
1)
Nominal point in the basic speed range
Lhmax: max. main field inductance
Sbeg:
Beginning of Saturation
Send: End of Saturation
Cut-off frequency for the field weakening range
The statement of the cut-off speed defines the beginning of the field weakening
operation. From the cut-off speed on, the magnetization current and thus the force
constant of the motor are reduced inversely proportional to the speed; the motor is
operated in the field weakening range. In the field weakening range, the shaft
power produced remains constant.
0
2000
4000
6000
8000
10000
12000
0
1000
2000
3000
4000
n/rpm
Po
w
e
r P/
W
0
10
20
30
40
50
60
Mo
m
e
n
t M/
N
m
P=f(n)
M=f(n)
1
2
1: Basic speed range
2: Field weakening range
