Siemens SIRIUS 3RW52 - Page 180

Example circuits
A.3 Special applications
SIRIUS 3RW52 Soft Starter
180 Manual, 01/2019, A5E35630451002A/RS-AD/004
WARNING
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.
Wiring of the 3RW52 soft starter
F1
Fuse
S1
Switch: Start / stop
S2
Pushbutton: Reset > 4 s
Q1
Motor starter protector
Q11
3RW52 soft starter
Q21
Contactor
P1
Indicator light
P2
Indicator light
M1
Motor