Panasonic MINAS S Series Operating Manual page 133

Details of Parameters
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
thecommand 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
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, motor speed is
750 r/ min.
- App.36 -
)/Pr4B = 10000
10000 (2500P/r x 4)
Pr 46 10000
Pr 4B 5000
Pr 46 2500
Pr 4B 10000
Pr 4A
0
x 2
Pr 4A
0
x 2