Panasonic Minas E Series Instruction Manual page 97

PrNo. Parameter Name
46
Numerator of 1st
command pulse ratio
47
Numerator of 2nd
command pulse ratio
4A
Multiplier of numerator
of command pulse ratio
4B
Denominator of
command pulse
ratio
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Range of
Settings
Related to command pulse dividing multiplier function (Pr46, 47, 4A, 4B)
1 -
Command pulse dividing multiplier (electronic gear) function
10000
• Purposes of Use
[10000] (1) To arbitrarily set rotation/motion of the motor per a unit input command
pulse.
1 -
10000 (2) To increase apparent command pulse frequency, by using multiplier
function, when the pulse oscillation capacity (maximum frequency that can
[10000]
be output) of the host is limited and thus required motor speed cannot be
0 - 17
obtained.
[0]
• Block Diagram of Dividing Multiplier Unit
1 -
10000
[10000]
1st numerator (Pr46)
*1
Command
2nd numerator (Pr47)
*1
pulse
f
• 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).
DIV OFF
DIV ON
<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).
Pr46 x 2
F = f x
Pr4B
F: Number of internal command pulses for one rotation of the motor
f: Number of command pulses for one rotation of the motor
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
97
[Connections and Settings in Position Control Mode]
Function/Content
Scaling factor (Pr4A)
× 2
Denominator (Pr4B)
Select a 1st numerator (Pr46).
Select a 2nd numerator (Pr47).
Pr4A
=10000
10000 (2500P/r x 4)
Pr 46 10000 x 2
Pr 4B 5000
Pr 46 2500 x 2
Pr 4B 10000
Standard Default Setup: [ ]
Internal
+
command
To deviation counter
F
–
Feedback
pulse
10000P/rev
(Resolution)
Pr 4A
0
Pr 4A
0