Bosch 150 AC Specifications Page 65

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• DOK-DIAX01-MAIN+2AD+1M-ANW1-EN-E1,44 • 07.97
65
3. Controller Functions
In comparison to pure main spindle speed control, the drive requires the
following for C-axis applications.
higher rotational stiffness,
finer resolution of command value input voltage and
a second command value input, depending on the type of controller.
The following functions are available:
changeover to a parameter record that is specially optimized to high
rotational speed stiffness,
changeover to fine resolution command value voltage and
changeover to second command value input with function parameters.
Prerequisites:
high-resolution motor feedback (on 2AD motor - type code field "motor
feedback" = 3, 1MB motor with Indramat high-resolution encoder)
direct measuring system on spindle (with incremental encoder or
Indramat high-resolution encoder)
Note:
When the Indramat high-resolution encoder is used, the additional
"incremental encoder output" interface is required on the control unit.
This provides the NC controller with incremental encoder-compatible
signals with adjustable number of encoder lines.
C-Achse-Indrama
t
1MB frameless spindle motor
rotor
position
power
spindle and rotor position
spindle position
power
2AD main spindle motor
C-axis functions
Figure 51: C-axis with Indramat main spindle drives
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