Lenze E94AxHE Technology Application Electronic gearbox - 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
Œ Ž
System bus
v
i
Slave
d v
R2 2
2


d v
R1 1
a
2
a
3

‘