Siemens SIRIUS 3RW55 Equipment Manual page 337

Wiring of the 3RW55 soft starter
The example shows the 3RW55 soft starter with a Standard circuit.
F1
S1
S4
Q1
Q11
Q21
P1
M1
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.
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006
Fuse
Switch: Start/stop
Pushbutton: Reset > 4 s
Motor starter protector
3RW55 soft starter
Contactor
Indicator light
Motor
WARNING
Example circuits
A.3 Special applications
337