Selecting The Optimum Soft Starter - Siemens SIRIUS 3RW30 Manual

Configuration
11.1 Configuration in general
3. Take account of a possible reduction in the soft starter's rated data due to the ambient
conditions and the type of assembly.
Chapter Reducing the rated data [Page 80]
11.1.2

Selecting the optimum soft starter

Selection aid
You can choose the optimum starter from the soft starter types available based on the
intended application or the required functionality.
Normal starting (CLASS 10)
applications
Pump
Pump with special stop (against water hammer)
Heat pump
Hydraulic pump
Press
Conveyor belt
Roller conveyor
Conveyor worm
Escalator
Piston compressor
Screw compressor
1)
Small fan
Centrifugal blower
Bow thruster
+ Recommended soft starter
x Possible soft starter
1) Small fan: Mass inertia (centrifugal mass) of fan < 10 x mass inertia of motor
Heavy-duty starting (CLASS 20)
applications
Agitator
Extruder
Turning machine
Milling machine
+ Recommended soft starter
x Possible soft starter
74
3RW30 3RW40
+ +
- -
+ +
x +
x +
x +
x +
x +
- +
- +
- +
- +
- +
- +
3RW30 3RW40
- x
- x
- x
- x
3RW44
+
+
+
+
+
+
+
+
+
+
+
+
+
+
3RW44
+
+
+
+
SIRIUS 3RW30 / 3RW40
Manual, 01/2010, 535 1995-02 DS01