
B-65270EN/05 2. SETTING αiS/αiF/βiS SERIES SERVO PARAMETERS
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Making these modifications eliminates the difference between the
number of position pulses corresponding to a single motor revolution
and the reference counter setting.
Number of position pulses corresponding to a single motor revolution
= 20000
Reference counter setting = 20000
(b) Full-closed loop (See Subsections 2.1.4 and 2.1.5)
Reference
counter setting
=
Z-phase (reference-position) interval divided by the
detection unit, or this value sub-divided by an integer
value
If the reference counter capacity setting is not an integer, see the
example in "Semi-closed loop."
NOTE
If the separate detector-table rotation ratio for the
rotation axis is not an integer, it is necessary to set
the reference counter capacity in such a way that
points where reference counter = 0 (grid points)
appear always at the same position for the table.
Example of setting
Example 1) When the Z-phase interval is 50 mm and the detection
unit is 1 µm:
Reference counter setting = 50,000/1 = 50,000
Example 2) When a rotation axis is used and the detection unit is
0.001°:
Reference counter setting = 360/0.001 = 360,000
Example 3) When a linear scale is used and a single Z phase exists:
Set the reference counter to 10000, 50000, or another
round number.
(10) Full-closed system setting (go to (11) if a semi-closed system is in use)
For a full-closed system, it is necessary to set the following function
bit.
(a) Series15i only
#7 #6 #5 #4 #3 #2 #1 #0
1807 (FS15i)
PFSE
2002 (FS30i, 16i)
↑ To be specified only for the Series 15i
PFSE(#3) The separate position detector is:
0: Not to be used
1: To be used
CAUTION
Specify this parameter only for the Series 15i.