Siemens SIRIUS 3RW5 Equipment Manual page 35

3.7.2 Sets the operating mode
Basic behavior when the operating mode is changed
A higher-priority mode can fetch control from a lower-priority mode at any time; the reverse is
not possible. The master control function can only be returned to the operating mode with
the lowest priority. Control sources with higher priority must take the master control function
from the operating mode with the lowest priority.
Requirements
An operating mode with lower priority can only take the master control function back while
the motor is switched off.
"Automatic" mode
Note that the 3RW5 soft starters switch to "Automatic" mode after the
3RW5 communication module has been installed in the 3RW52 soft starter with a firmware
version earlier than V2.0.1, 3RW55 or 3RW55 Failsafe. The 3RW5 soft starters switch to the
"Automatic" mode after installation of the 3RW5 communication module in the
3RW52 soft starter as of firmware version V2.0.1 and after the 3RW5 communication module
is connected to the 3RW50 soft starter only for the settings "Manual activation" or
"No change on bus error" of the parameter "Control via digital input" (Page 39).
Fetching control
"Automatic" mode fetches control from the operating mode "manual - local" as follows:
● For 3RW55 and 3RW55 Failsafe soft starters if the input action
"Operating mode manual - local" is parameterized: By deactivating the input action
"Operating mode manual - local".
● 3RW50, 3RW52 soft starters and for 3RW55 and 3RW55 Failsafe soft starters if the input
action "Operating mode manual - local" is not parameterized: Disabling the
"Manual operation local - input controlled" bit in the data table
"Process image output (PIQ)" (Page 150) causes "Automatic" mode to fetch control from
the input IN or from the digital inputs.
● "LOCAL / REMOTE" action on the 3RW5 HMI
● Command in SIRIUS Soft Starter ES (TIA Portal)
(local interface on the 3RW5 HMI High Feature)
Brief overview: Window "Task Card" > Tab "Online Tools" > "SIRIUS Control Panel >
Master Control > Release Control"
Withdrawal of master control by other control sources
In "Automatic" mode, control can be withdrawn by any control source.
SIRIUS 3RW5 Modbus communication module
Equipment Manual, 03/2020, A5E43676481002A/RS-AC/003
3.7 Operating modes and master control function
Description
35