
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
SlaveMaster/Slave
d v
R33
i
1 3
System bus
v
i
Slave
d v
R22
2
d v
R11
a
2
a
3
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