Application Examples For Very Heavy Starting (Class 30) - Siemens SIRIUS 3RW44 System 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 selected soft starter must have a power class that is 2 classes higher than that of the implemented motor
Application
Starting parameters
• Voltage ramp and current
limiting
- Start voltage
- Starting time
- Current limit value
• Torque ramp
- Start torque
- End torque
- Starting time
• Breakaway pulse
Stopping mode
2-4
),
n motor
Large fans
% 30
s 60
4 x I
M
20
150
60
Deactivated (0 ms)
Coasting 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".
Mills Crushers
50 50
60 60
4 x I 4 x I
M
50 50
150 150
60 60
80 %; 300 ms 80 %; 300 ms
Coasting down Coasting down
Disk saws/ribbon saws
30
60
4 x I
M M
20
150
60
Deactivated (0 ms)
Coasting down
SIRIUS 3RW44 System Manual
GWA 4NEB 535 2195-02 DS 04