User Manual

ManualsBrandsSiemens ManualsAutomationSoft Starter SIRIUS S0 12.5A 3 kW @ 230 V/5.5 kW @ 400 V 24V 24V

SIRIUS 3RW30 / 3RW40

Manual, 10/2010, 535199502000 DS 03

Table of contents

1 Introduction.............................................................................................................................................. 11

1.1 Important not

es ............................................................................................................................11

2 Saf

ety information.................................................................................................................................... 13

2.1 Before commencing work: Isolating the

equipment from the supply system a

nd ensuring

that it cannot be reconnected.......................................................................................................13

2.2 Five safety rules for work in or on elec

trical systems ..................................................................14

3 Product des

cription.................................................................................................................................. 15

3.1 Fields of applic

ation .....................................................................................................................15

3.2 Basic physical principles of a three-phase induc

tion motor.........................................................16

3.2.1 Three-phase induc

tion motor.......................................................................................................16

3.3 Functional pri

nciple of the SIRIUS 3RW30 and 3RW40 soft starters..........................................18

3.3.1 Method of operation of a two-phase controlled

soft starter .........................................................20

3.3.2 Starting cu

rrent asymmetry..........................................................................................................21

3.3.3 Applications

and use....................................................................................................................23

3.4 Comparison of device func

tions...................................................................................................24

4 Product c

ombinations .............................................................................................................................. 25

4.1 SIRIUS modular syst

em...............................................................................................................25

5 Funct

ions................................................................................................................................................. 27

5.1 Start modes..................................................................................................................................27

5.1.1 Voltage ram

p................................................................................................................................27

5.1.2 Current limiting and ramp-up detection (3RW40 only).................................................................30

5.2 Stop modes..................................................................................................................................32

5.2.1

Stop without load (3RW30

and 3RW40)......................................................................................32

5.2.2 Soft stop (3RW40 only)................................................................................................................33

5.3 Motor protec

tion / intrinsic devic

e protection (3RW40 only) ........................................................34

5.3.1 Motor protection function .....................................................................................................

........34

5.3.2 Intrinsic device protec

tion (3RW40 only) .....................................................................................37

5.4 Functions

of the RESET buttons..................................................................................................38

5.4.1 SIRIUS 3RW40 2, 3RW40 3, and 3RW40 4 soft starters............................................................38

5.4.1.1 RESET MODE bu

tton and LED ...................................................................................................38

5.4.1.2 Manual

RESET ..................................................................................................................

..........38

5.4.1.3 Remote RESET ...........................................................................................................................39

5.4.1.4 AUTO RESET ..............................................................................................................................39

5.4.1.5 Acknowledging faults

...................................................................................................................39

5.4.2 SIRIUS 3RW40 5 and 3RW40 7 soft starters..............................................................................40

5.4.2.1 RESET MODE button and AUTO LE

D ........................................................................................40

5.4.2.2 Manual R

ESET ............................................................................................................................40

5.4.2.3 Remote RESET ...........................................................................................................................40

5.4.2.4 AUTO RESET ..............................................................................................................................41

5.4.2.5 Acknowledging faults

...................................................................................................................41

5.4.3 Other functions of the RE

SET button ..........................................................................................41