Application Examples For Very Heavy Starting (Class 30) - Siemens SIRIUS 3RW44 Manual

Configuration Instructions

2.2.3 Application Examples for very Heavy Starting (CLASS 30)

Very heavy starting Class 30 (up to 60 s with 350 % I
The soft starter has to be selected two rating classes higher than the motor used
Application
Starting parameters
• Voltage ramp and current
limiting
- Starting voltage
- Starting time
- Current limit value
• Torque ramp
- Starting torque
- End torque
- Starting time
• Breakaway pulse
Ramp-down mode
2-4
),
n motor
Large ventilator
% 30
s 60
4 x I
M
20
150
60
Deactivated (0 ms)
Free ramp-down
Note
These tables provide example set values and device dimensionings. They serve
as information only and are not binding. The set values are application-
dependent and must be optimized during commissioning.
Soft starter dimensioning should, if necessary, be verified with the help of the
Win-Soft Starter program or via the Technical Assistance in Chapter "Important
notes".
Mill Breakers
50 50
60 60
4 x I 4 x I
M
50 50
150 150
60 60
80 %, 300 ms 80 %, 300 ms
Free ramp-down Free ramp-down
Circular saw/bandsaw
30
60
4 x I
M M
20
150
60
Deactivated (0 ms)
Free ramp-down
SIRIUS 3RW44 manual
GWA 4NEB 535 2195-02 DS 02