Mannesmann Rexroth DDS 2.1, Руководство по применению

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• DOK-DIAX02-DDS02.1*ANA-ANW1-EN-E1,44 • 12.96
74
7. Commissioning the functions of the digital AC servo drive
Fig. 72: Maximum motor speed in relation to the settable encoder line count per
motor revolution
Setting the
market pulse offset
ENA3A-Abb44/InbetrDDS
Lines/motor revolution
20000
18000
16000
14000
12000
10000
8000
6000
4000
2000
0
0 2000 4000 6000 8000 10000
Motor speed [ rpm]
permissible range
max. output frequency: 504 kHz
60 [s/min] * 504000 [lines/sec]
n
max
=
line count [lines/rev.]
Accurate homing requires exact sensing of the marker pulse and this is
not guaranteed when the switching edge of the physical home switch
coincides with the encoder’s marker pulse. The homing cycle cannot be
completed.
To avoid this, the following procedure is recommended:
1. Traverse the servo axis until it reaches the switching edge of the home
switch.
2. Jot down the rotor position indicated in degrees in the "Drive Status"
menu.
3. Continue in the same direction towards the reference cam until the
"marker pulse" display in the "Drive Status" menu switches from "0"
to "1". The marker pulse is now active.
4. Stop the axis.
5. Read off the new rotor position in degrees. The difference between
the old and the new rotor position should be 90
°
. If this is not the case,
the amount needed to make up 90
°
should be entered as "marker
pulse offset" in the "incremental encoder setup" menu.