Siemens SIRIUS 3RW55 Manual page 4

Table of contents
4 Connecting ........................................................................................................................................... 53
4.1 Overview of all connections ................................................................................................... 53
4.2 Connecting the 3RW55 soft starter ........................................................................................ 54
4.3 Connect the 3RW55 soft starter to the main circuit connection (line side / motor side) ........ 55
4.4 Mounting terminal covers on main circuit connections .......................................................... 57
4.5 Replacing the terminals on size 2 devices ............................................................................. 58
4.6 Connecting the control terminals (screw terminals) ............................................................... 60
4.7 Disconnecting the control current form the screw-type terminals .......................................... 61
4.8 Connecting the control terminals (spring-type terminals) ...................................................... 62
4.9 Disconnecting the control current from the spring-loaded terminals ..................................... 63
4.10 Replacing the control terminals .............................................................................................. 64
4.11 Installing the cover for the control cable duct ........................................................................ 66
4.12 Removing the cover of the control cable duct ........................................................................ 67
5 Parameter assignment .......................................................................................................................... 69
5.1 Parameterizing the 3RW55 soft starter .................................................................................. 69
5.2 Motor parameters ................................................................................................................... 72
6 Commissioning ..................................................................................................................................... 75
6.1 Commissioning the 3RW55 soft starter ................................................................................. 75
6.2 Application wizard .................................................................................................................. 76
6.3 Sealing the soft starter (optional) ........................................................................................... 77
7 Functions .............................................................................................................................................. 79
7.1 Last changed parameters ...................................................................................................... 79
7.2 Start-up .................................................................................................................................. 80
7.2.1 Starting modes ....................................................................................................................... 80
7.2.2 Automatic parameterization ................................................................................................... 81
7.2.3 Soft starting with voltage ramp ............................................................................................... 83
7.2.4 Soft starting with torque control ............................................................................................. 86
7.2.5 Soft starting with voltage ramp and current limiting ............................................................... 89
7.2.6 Soft starting with torque control and current limiting .............................................................. 91
7.2.7 Direct-on-line starting ............................................................................................................. 92
7.2.8 Motor heating ......................................................................................................................... 93
7.2.9 Breakaway pulse for startup functions ................................................................................... 94
7.3 Run-down ............................................................................................................................... 96
7.3.1 Types of soft stop ................................................................................................................... 96
7.3.2 Coasting down ....................................................................................................................... 97
7.3.3 Torque control ........................................................................................................................ 98
7.3.4 Pump stop ............................................................................................................................ 100
7.3.5 DC braking with external braking contactor ......................................................................... 102
7.3.6 Dynamic DC braking without contactor ................................................................................ 104
7.3.7 Voltage ramp ........................................................................................................................ 106
7.3.8 Alternative stopping ............................................................................................................. 107
4
SIRIUS 3RW55 soft starter
Manual, 08/2018, A5E35630887002A/RS-AB/002