Siemens SIRIUS 3RW52 - Control by PLC

Example circuits
A.2 Control circuit connection
SIRIUS 3RW52 Soft Starter
Manual, 01/2019, A5E35630451002A/RS-AD/004
171
A.2.4 Control by PLC
Requirements
● Utilization of a 3RW52 soft starter..-...4 (24 V) and power supply with DC voltage.
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 control circuit for control by PLC
F1
Fuse
K1
Coupling relay control for reset > 4 s
Q1
Motor starter protector
Q11
3RW52 soft starter
Q21
PLC
M1
Motor
PE
Protective conductor