Siemens Sirius 3RW44 System Manual page 15

SIRIUS 3RW44 manual
GWA 4NEB 535 2195-02 DS 01
Motor
Motordreh-
torque
moment
M
M
Direct
Direktstart
on-line
starting
M
Nom
Nenn
1
2
3
1 M
Soft start
Sanftstart
voltage ramp Spannungsrampe
2 M
Soft start
Sanftstart
torque-controlled
Drehmomentgeregelt
3
M
Load e.g. pump
Last (z. B. Pumpe)
Fig. 1-4: Reduced torque behavior of the 3-phase asynchronous motor during start-up
with SIRIUS soft starter 3RW44
Introduction
Motor speed
Motordrehzahl
n
Nom
n
Nenn
1-5