Siemens SIRIUS 3RW55 Equipment Manual page 324

Example circuits
A.3 Special applications
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.
Note
Set the stopping mode "Coasting down" on the 3RW55 soft starter.
Make sure that the input actions are parameterized each with its own parameter set:
• "Motor CW with PS1" for input DI1
• "Motor CW with PS2" for input DI2
• "Motor CW with PS3" for input DI3
• "Reset" for input DI4 (optional)
Make sure that the output actions are parameterized as "Operation / Bypass".
Note
In the case of increased operating sequences, set the dimensions for the 3RW55 soft starters to
at least one capacity level higher than the highest connected motor output.
324
WARNING
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006