4-30
Pr3.24
*
Title
Numerator of external scale division
Related
control mode
P S T
F
Range
0 to 2
20
Unit
—
Default
0
Set up the numerator of the feedback scale dividing setup.
When setup value = 0, encoder resolution is used as numerator of the division.
Pr3.25
*
Title
Denominator of external scale division
Related
control mode
P S T
F
Range
1 to 2
20
Unit
—
Default
10000
Caution
• Check the number of encoder pluses per one motor revolution and the number of feedback
scale pulses per one motor revolution, and then set up the numerator of external scale
division (Pr3.24) and the denominator of external scale division (Pr3.25) to establish the
expression shown below.
• With Pr3.24 set at 0, the encoder resolution is automatically used as numerator.
Example: When ball screw pitch is 10 mm, scale 0.1 _m/pulse, encoder resolution 20 bits
(1048.576 pulses);
Encoder resolution per one motor revolution [pulse]
Feedback scale resolution per one motor revolution [pulse]
=
Pr3.24 1048576
Pr3.25 100000
If this ratio is wrong, the difference between the position calculated based on the encoder
pulses and the position calculated based on the feedback scale pulses becomes large over
a long travel distance and will activate the excess hybrid deviation error protection.
Pr3.26
*
Title
Reversal of direction of external scale
Related
control mode
P S T
F
Range
0 to 1
Unit
—
Default
0
Note
Reverse the direction of feedback scale, feedback counter.
Setup value
Content
0
Count value of external scale can be used as it is.
1
Sign (positive/negative) of count value of external scale should be inverted.
For setting method of this parameter, refer to P.3-12 Full closed control mode.
Pr3.27
*
Title
External scale Z phase disconnection
detection disable
Related
control mode
P S T
F
Range
0 to 1
Unit
—
Default
0
Enable/disable Z-phase disconnection detection when A, B phase output type feedback
scale is used.
Setup value
Content
0
Valid
1
Invalid
1. Details of parameter
[Class 3] Verocity/ Torque/ Full-closed control
Summary of Contents for MADHT1105
Page 36: ...1 24 MEMO ...
Page 118: ...2 82 MEMO ...
Page 168: ...3 50 MEMO ...
Page 272: ...5 42 MEMO ...