Lenze Engineer v2.21 - Manual (Page 185)

Lenze · Engineer · 2.13 EN - 10/2014
185
Defining the system functionality
Creating an interconnection via the electrical shaft
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8.14.3 Virtual master/real master
Virtual master
[8-11] Example of a "virtual master" (with transfer of master value via extension module master frequency)
Real master
[8-12] Example of a "real master" (with master value transfer via extension module master frequency)
• A drive in the interconnection performs
the tasks of the (virtual) master and is
simultaneously the first slave drive.
• The master value formed by the "virtual
master" function within the part the plant
is transferred to the other slave drives via a
bus system or the digital frequency output.
d v
R
i
v
Virtual master /
Slave 1
X10: DFout
• The master value is defined for a slave
drive in the interconnection by a real
master (e.g. external encoder).
• This can be done e.g. via the digital
frequency input of the extension module
or via a bus system.
• The master value (within the technology
application; if necessary, edited) is
transferred to the other slave drives via a
bus system or the digital frequency output.
d v
d v
R1
R2
1
2
i
1
i
2
v
1
v
2
X10: DFout
Real master/
Slave 1
X9: DFin