Siemens SIRIUS 3RW5 PROFIBUS Equipment Manual page 28

Description
3.5 Operating modes and master control function
Priorities of the operating modes
Operating mode
Automatic
Manual bus mode
Manual operation local -
Supported by 3RW55 soft starter from firmware version V2.1
1)
Not possible for 3RW50, 3RW52, 3RW55 soft starters with firmware version earlier than V2.1 and 3RW55 Failsafe. For
2)
the 3RW55 soft starter as of firmware version V2.1 if the digital inputs have master control by activating the
"Manual operation local - input controlled" bit in the process image output (PIQ). The PLC can regain master control at
any time.
Explanation in text below.
3)
Possible for 3RW50, 3RW52, 3RW55 and 3RW55 Failsafe soft starters. For 3RW55 soft starters as of firmware version
4)
V2.1, only if the input action "Operating mode manual - local" has been parameterized and activated.
Connection abort
On failure of the bus connection or a CPU stop, the 3RW5 soft starters behave as follows,
irrespective of the operating mode:
● 3RW50 soft starter: The 3RW50 soft starter behaves in accordance with the parameter
"Control via digital input" (Page 35).
● 3RW52 soft starter with firmware version earlier than V2.0.1: The 3RW52 soft starter
remains in the "Automatic" mode or switches to the "Automatic" mode.
Note
Response of 3RW52 soft starter in the event of bus connection failure or CPU stop
(3RW52 soft starter with firmware version earlier than V2.0.1)
To enable you to continue controlling the 3RW52 soft starter after failure of the bus
connection or CPU stop, you will need a 3RW5 HMI (accessory), which enables you to
switch to "Manual operation local" mode.
Without 3RW5 HMI you cannot control the 3RW52 soft starter until the bus connection
has been restored.
Alternatively, you can remove the 3RW5 communication module (Page 45). Then restore
the 3RW52 soft starter on the device to the factory setting, in order to switch to the
"Manual operation local - Input controlled" mode.
28
Control source
- PLC
Input controlled Digital inputs
1)
- Connection abort
PC controlled SIRIUS Soft Starter ES (TIA Portal) Premium /
Professional
Connection abort
(depending on the 3RW5 soft starter and the
parameterization)
Input controlled Input IN or digital inputs
3RW5 HMI controlled 3RW5 HMI
PC controlled SIRIUS Soft Starter ES (TIA Portal)
2)
3)
3)
4)
SIRIUS 3RW5 PROFIBUS communication module
Equipment Manual, 02/2020, A5E35633549002A/RS-AC/003
Priority
Lowest
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Highest