Lenze E94AxHE Technology Application Synchronism - Manual (Page 18)

9400 Technology applications | Synchronism with mark synchronisation
Introduction
Application examples
18
L
EDS94TA10040xxxx EN 1.1 - 10/2008
3.9.4 Tighten the web via trimming function with cascade
In case a clearance has developed, the web must be "tightened" again. Only then the
machine can be accelerated again via the master. The subsequent slave (cascade structure)
must run along in the set ratio. Thus, the trimming function acts directly before or after the
stretching factor.
[3-6] Trimming function in case of the electronic gearbox as cascade
n Real master/slave 1
o Slave 2 with master value trimming
p Slave 3
q Digital frequency cascade (digital frequency extension module required)
i
Slave Master/Slave
d v
d v
d v
R1
R2
R4
1
2
4
i
1
i
2 4
Œ Ž
v
3
v
4
i
Slave
d v
R3 3
3

v
1

Digital
frequency