User guide

5 Function blocks
5.98 L_LdSyncOperation - master value connection
370
Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
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5.98.3 Operating mode 2: Free coupling
In this operating mode, the FB couples the axes of the master drive and the slave drive only via the
gearbox factors of the master drive/slave drive and the coupling factors parameterised in C05092/
1 and C05092/2.
• Neither the feed constants nor the cycles of the master measuring system/slave measuring sys-
tem have any effect on the synchronism ratio.
• Via C05092/1 and C05092/2 the revolution ratio is indicated, i.e. how many revolutions of the
master shaft (x axis) correspond to how many revolutions of the following axis (x axis).
• The speed ratio between the slave drive and the master drive is calculated according to follo-
wing formula:
[5-61] Formula for operating mode 2
• The conversion according to the formula above is remainder considered and hence drift-free
(consideration of remainders when performing divisions).
Application example: Wire drawing system with specification of the synchronism ratio K
y
The speed ratio between the master drive and the slave drive is calculated according to the formula
above, the synchronism ratio K
y
being considered as the C05092/1 and C05092/1 coupling factors:
dnYSpeedOut_s
dnXSpeedOut_s
-----------------------------------------
Gearbox constant Y
Gearbox constant X
---------------------------------------------------
Coupling factor Y (C05092/2)
Coupling factor X (C05092/1)
---------------------------------------------------------------------------
⋅=
 Master drive (wire drawing station 1)
 Slave drive (wire drawing station 2)
 Traversing speed
 K
y
* traversing speed
Master drive (wire drawing station 1) Slave drive (wire drawing station 2)
Gearbox constant X 17 : 3 Gearbox constant Y 13 : 2
Feed constant X 160.0000 [mm] Feed constant Y 160.0000 [mm]
Coupling factor X
(C05092/1)
100 [%] Coupling factor Y
(C05092/2)
110 [%]
dnYSpeedOut_s
dnXSpeedOut_s
-----------------------------------------
13
2
------
17
3
------
------
110 [%]
100 [%]
-------------------
⋅ 1.2618...==