Siemens SIRIUS 3RW50 Manual page 140

Functions
7.10 Control via digital input
Note that for the settings "Manual activation" and "No change on bus error", the
3RW50 soft starter switches to the "Automatic" mode after connection of the
3RW5 communication module to the 3RW50 soft starter.
If, on failure of the bus connection or CPU stop, the 3RW50 soft starter remains in the
"Automatic" mode or switches to the "Automatic" mode, you can switch to the operating
mode "manual - local" by means of the following procedures:
● Via a 3RW5 HMI or SIRIUS Soft Starter ES (TIA Portal) over the local interface on the
3RW5 HMI High Feature (Page 17).
● Change the setting of the parameter "Control via digital input" in the parameterizing mode
by means of a key combination on the 3RW50 soft starter (Page 101).
● Remove the COM connecting cable from the 3RW5 communication module (Page 88).
Then restore the 3RW50 soft starter on the device to the factory setting, in order to
(Page 192) switch to the "Manual operation local - Input controlled" mode.
Further information
For more information, see Chapter Operating modes and master control function (Page 15).
You will find further information about operation on failure of the bus connection to the
control in the manual for the 3RW5 communication module in question.
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SIRIUS 3RW50 soft starter
Manual, 09/2019, A5E35628455002A/RS-AA/001