2-44
Engineering Guide CDA3000
2  Drive definition
2.5.4 Characteristic 
values of syn-
chronous motors
Synchronous motor with salient-pole rotor
Figure 2.23 Typical torque characteristic of a synchronous motor with 
salient-pole rotor
Synchronous motor with cage winding and permanent magnets
 Typical startup characteristic of a permanent magnet excited synchronous motor with cage winding for asynchronous self-running
Figure 2.24 Typical synchronous motor of a synchronous motor with cage 
winding and permanent magnets
(1)   Pull-in to synchronism
(2)   Pull-out of synchronism
 (corresponding to VDE 0530)
0.2
0.4
0.6
0.8
1
1
2
3
4
M
M
N
n/n
N
M
ksy
0.2
0.4
0.6
0.8
1
1
2
2.5
1.5
M
M
N
n/n
N
(1)
(2)
M
ksy
M
sy
M
sy
09, M
N
⋅≈
M
ksy
135, M
N
⋅≈