Soft Starter For Pole-Changing Motor With Separate Windings And 2 Parameter Sets - Siemens SIRIUS 3RW55 Equipment Manual

Example circuits
A.3 Special applications
F4 Fuse
S3 Pushbutton: Reset
S10 Pushbutton: Motor 1 Start
S11 Pushbutton: Motor 1 Stop
S20 Pushbutton: Motor 2 Start
S21 Pushbutton: Motor 2 Stop
S30 Pushbutton: Motor 3 Start
S31 Pushbutton: Motor 3 Stop
Q11 3RW55 soft starter
Q21 Starting contactor, motor 1
Q22 Line contactor, motor 1
Q31 Starting contactor, motor 2
Q32 Line contactor, motor 2
Q41 Starting contactor, motor 3
Q42 Line contactor, motor 3
H1 Indicator light
A.3.9 Soft starter for pole-changing motor with separate windings and 2 parameter
sets
Requirements
• 3RW55 or 3RW55 Failsafe soft starter (the example shows the 3RW55 soft starter)
• Parameterization required
Note
The "Coasting down" stopping mode must be set on the 3RW5.
Automatic restart.
Can cause death or serious injury.
If a starting command is pending, a restart will be triggered automatically after the reset. This
particularly applies if the motor protection has tripped. Dangerous states of the system can
result.
Reset the start command (e.g. via the PLC or switch) before performing a reset.
To do this, for example, link the group error output (terminals 95 and 96) into the control.
328
WARNING
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006