Siemens SIRIUS 3RW52 - Operating Modes and Master Control Function

Description
1.5 Operating modes and master control function
SIRIUS 3RW52 Soft Starter
12 Manual, 01/2019, A5E35630451002A/RS-AD/004
1.5 Operating modes and master control function
The following modes are available (in ascending order of priority):
Mode
Control source
Control of the 3RW5 soft starter
Priority
Automatic Fieldbus
PROFINET and PROFIBUS: PLC controls
Lowest
Modbus: Modbus client (e.g. PLC) controls
Manual
operation bus
(depending on
the 3RW5
communication
module)
-
-
Connection abort
↓
PC controlled Fieldbus SIRIUS Soft Starter ES (TIA Portal) Premium
controls
↓
Manual
operation local
Input controlled
Digital inputs
Input actions control
↓
3RW5 HMI
controls
3RW5 HMI 3RW5 HMI controls ↓
PC controlled
Local interface
SIRIUS Soft Starter ES (TIA Portal) controls
Highest
If the connection to the control source is aborted, the control priority automatically switches
back to the lowest priority of the current mode.
Sets the operating mode
A higher-priority mode can actively take over as master control from a lower-priority mode at
any time; the reverse is not possible.
The master control function can only be returned to the mode with the lowest priority. Control
sources with higher priority must take the master control function from the mode with the
lowest priority.
A mode with lower priority can only take the master control function back while the motor is
switched off.
The mode with higher priority takes over or receives the master control function from the
current mode in the following ways:
● The mode with higher priority actively takes over the master control function:
– 3RW5 HMI: With the action "LOCAL / REMOTE"
– SIRIUS Soft Starter ES (TIA Portal)
● The digital inputs receive the control priority from an operating mode with lower priority
via the following options:
– Via the "Manual operation local - input controlled" bit in the process image output
(PIQ) or in the data table "process image output (PIQ)" (depending on the 3RW5
communication module). You will find more information on the process images and
data tables in the manual for the 3RW5 communication module in question.
– SIRIUS Soft Starter ES (TIA Portal) (depending on the 3RW5 communication module)