Specifications

• DOK-DIAX01-MAIN+2AD+1M-ANW1-EN-E1,44 • 07.97
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3. Controller Functions
3.6.4 Spindle Positioning via Spindle Feedback
A precondition is that the control unit is fitted with the interface for the
second encoder input (type code field "second encoder input" = P).
The incremental encoder fitted to the spindle must be compatible with
ROD 420/426 (5V supply voltage).
The Indramat high-resolution encoder used for spindle feedback can
only be evaluated at high resolution in conjunction with the incremental
encoder output or "Sercos" interface (type code "additional interface"=1).
Para-Spindel-lage
Parameter protocol !
☞
Parameter
P16
A05
A11
Designation
PQ-FUNCT
FUNCT 1
ENCODER 2
Function
rotational direction of motor and spindle
positioning not via spindle feedback,
but via motor feedback
lines, if an incremental encoder is
used as spindle feedback
spindle feedback
is high-resolution
INDRAMAT encoder:
Value range or value
< 8 >
128 to 8192
< 3 >
< 4 >
S R Q
- same
- opposite
< 0 >
< 2 >
with ø 128 mm (256 teeth)
with ø 256 mm (512 teeth)
When an incremental encoder is used, the spindle positioning accuracy
depends on the number of lines used.
If an Indramat high-resolution encoder is used and the control unit is
modified as above, the spindle positioning accuracy is 1/1000th of an
angular degree. (For further information on Indramat high-resolution
main spindle position encoders, refer to document number 9.552.247.4.)
Positioning accuracy
Figure 45: Additional parameters to 3.6.1 for spindle positioning via spindle feedback