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8. Setup
8 - 6
(b) For full-closed loop control
Note that when using machine side detector, some parameters must be set depending upon
linear scale and installation conditions.
[1] Set SV025 bit8 to B(ent) by following the motor side detector specification as for the
semi-closed loop control.
[2] When polarities of the motor side detector and machine side detector do not match, set
SV017 bit4=1.
Setting for full-closed loop control
No. Abbrev. Parameter name Explanation
F E D C B A 9 8 7 6 5 4 3 2 1 0
spm abs fdir vfb dfbx
bit Meaning when set to 0 Meaning when set to 1
4
fdir
Position feedback forward polarity Position feedback reverse polarity
SV017 SPEC*
Servo specification
selection
bit Details
8
9
A
B
ent
Set the detector type.
Set the position detector type for “pen”, and the speed detector type
for “ent”. In the case of the semi-closed loop control, set the same
value for “pen” and “ent”.
C Detector model name
pen
setting
ent setting
D
0 Setting impossible
E
1 Setting impossible
F
pen
A51, A74 2 (Note) 2
3 Setting impossible
4 Setting impossible
5 Setting impossible
6 Setting impossible
7 Setting impossible
Relative position rectangular wave output
scale
8 Setting impossible
9 Setting impossible
A
Setting impossible
B Setting impossible
C Setting impossible
D Setting impossible
E Setting impossible
F Setting impossible
(Note) Setting for semi-closed loop control.
SV025 MTYP* Motor/detector type
Parameters with an asterisk * in the abbreviation, such as PC1*, are validated with the NC power turned ON again.