97
[Connections and Settings in Position Control Mode]
Connections and
Settings in Position
Control Mode
Command
pulse
×
2
1st numerator (Pr46)
*1
*1
Scaling factor (Pr4A)
Internal
command
F
f
+
–
(Resolution)
Feedback
pulse
To deviation counter
10000P/rev
Denominator (Pr4B)
2nd numerator (Pr47)
PrNo.
Parameter Name
Function/Content
Command pulse dividing multiplier (electronic gear) function
•
Purposes of Use
(1) To arbitrarily set rotation/motion of the motor per a unit input command
pulse.
(2) To increase apparent command pulse frequency, by using multiplier
function, when the pulse oscillation capacity (maximum frequency that can
be output) of the host is limited and thus required motor speed cannot be
obtained.
• Block Diagram of Dividing Multiplier Unit
•
A calculated value of a numerator shall be up to 2621440. Even though you
set a value greater than this upper limit, setting will be invalid. Note that
2621440 will be a numerator.
Selection of command multiplier dividing “numerator”
*1: Select 1 or 2 with command dividing multiplier input switching (DIV:CN X5 pin
6).
<Example of Setting>
•
It is essential that “the motor rotates once with command input (f) for resolution
of the encoder”, when the diving multiplier ratio = 1.
Thus, in order to rotate the motor once as an example when the encoder
resolution is 10000 P/r, you should enter f =5000 Pulse for double multiplier,
and f=40000 Pulses in 1/4 dividing.
•
Set Pr46, 4A and 4B so that internal command (F) after dividing multiplier will
be equal to resolution of the encoder (10000).
46
47
4A
4B
Numerator of 1st
command pulse ratio
Numerator of 2nd
command pulse ratio
Multiplier of numerator
of command pulse ratio
Denominator of
command pulse
ratio
1 -
10000
[10000]
1 -
10000
[10000]
0 - 17
[0]
1 -
10000
[10000]
DIV OFF
DIV ON
Select a 1st numerator (Pr46).
Select a 2nd numerator (Pr47).
Related to command pulse dividing multiplier function (Pr46, 47, 4A, 4B)
F = f x
Pr46 x 2
Pr4A
=10000
Pr4B
F: Number of internal command pulses for one rotation of the motor
f: Number of command pulses for one rotation of the motor
Standard Default Setup: [ ]
Resolution of Encoder
Example 1
Set command input (f) to
5000 per one rotation of
the motor
Example 2
Set command input (f) to
40000 per one rotation of
the motor
10000 (2500P/r x 4)
Pr 46 10000 x 2
Pr 4B 5000
Pr 46 2500 x 2
Pr 4B 10000
Pr 4A
0
Pr 4A
0
Range of
Settings
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