Panasonic MINAS S-series Operating Manual page 103

P a r a m e t e r R a n g e
PrNo.
d e s c r i p t i o n
46
~
4B
(continued)
You can select the numerator of the command scalar.
*1 Select the 1st. or 2nd. numerator with scalar input switching (DIV: CN I/F
Pin 6) .
DIV off 1st numerator (Pr46) selection
DIV on 2nd numerator (Pr47) selection
<Example>
• Basic relation is defined so as the motor runs one revolution with the
command input of encoder resolution(f), when the scale ratio is 1.
Therefore, when the encoder resolution is 10000 P/r, it is necessary to
enter f=5000 pulses in case of scale ratio of 2, and f=40000 pulse in case
of scale ratio of 1/4 to turn the motor one revolution.
• Set-up the Pr46, Pr4A and Pr4B so that the post-scaling inter nal command
(F) equals the resolution (10000) of the encoder.
Pr4A
F = f x (Pr46 x 2 )/Pr4B = 10000
F: Internal command pulse counts required for motor one revolution
f: Command pulse counts required for motor one revolution
Resolution of encoder
Example 1:
Command input (f) is
5000 pulses per
one revolution
Example 1:
Command input (f) is
40000 pulses per
one revolution.
However, if frequency of
input pulses is 500 kpps,
m o t o r s p e e d i s 7 5 0 r /
min.
- App.29 -
F u n c t i o n
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