9400 technology applications | electronic gearbox – Lenze E94AxHE Technology Application Electronic gearbox User Manual
Page 18

9400 Technology applications | Electronic gearbox
Introduction
Application examples
18
L
EDS94TA10030xxxx EN 1.2 - 11/2009
3.9.5
Relative synchronism with mark synchronisation and virtual master
[3-7]
Relative synchronism with virtual master (rail)
In case of the relative synchronism with mark synchronisation, there is a position reference
between tool and web, which occurs in each register. For this, a slight correction is
superimposed to the synchronous motion with regard to the web. Such applications are,
for instance, printing machines.
For the mark synchronisation in particular the register r (the cycle of the guiding angle)
and the distance of the sensor s from the home position of the tool (distances a
2
and a
3
)
are relevant.
n
Virtual master (and slave 1)
o
Slave 2
p
Slave 3
q
Electrical shaft, implemented here via system bus (CAN).
r
Register (cycle of guiding angle/guiding angle)
s
Sensor for mark synchronisation
i
Slave
Master/Slave
d
v
R3
3
i
1
3
System bus
v
i
Slave
d
v
R2
2
2
d
v
R1
1
a
2
a
3