Siemens SIRIUS 3RW30 - 12.1.1 Configuration procedure; 12.1.2 Selecting the optimum soft starter

Configuration
12.1 Configuration in general
SIRIUS 3RW30 / 3RW40
86 Manual, 10/2018, NEB535199502000/RS-AB/005
12.1.1
Configuration procedure
1. Select the correct starter
What application must be started and what functionality must be provided by the soft starter?
Chapter Selecting the optimum soft starter (Page 86)
2. Take account of the startup class and the switching frequency
Chapters Startup class (Page 89) and Calculating the permissible switching frequency
(Page 95)
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 93)
12.1.2
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
3RW30
3RW40
3RW44
Pump
+
+
+
Pump with special stop (against water hammer)
-
-
+
Heat pump
+
+
+
Hydraulic pump
x
+
+
Press
x
+
+
Conveyor belt
x
+
+
Roller conveyor
x
+
+
Conveyor worm
x
+
+
Escalator
-
+
+
Piston compressor
-
+
+
Screw compressor
-
+
+
Small fan
1)
-
+
+
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