Example circuits
A.3 Special applications
SIRIUS 3RW55 soft starter
228 Manual, 08/2018, A5E35630887002A/RS-AB/002
3RW55 soft starter with direct-on-line starting (DOL) as emergency start
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.
● Parameterization required
Wiring for 3RW55 soft starter with direct-on-line starting (DOL) as emergency start
Selector switch Soft starting / direct-on-line starting
Switch: Start / stop (3RW55 soft starter)
Switch: Direct on-line starting (DOL)