Panasonic MCDDT3520 - Page 65

65
[Setting]
Setting
Servo
PrNo.
Setup
range
Title Function/Content
Standard default : < >
44
*

45
*
1 to 32767
<10000>

0 to 32767
<10000>
Numerator of
output pulse ratio

Denominator of
output pulse ratio
• In the case the external scale pulse is output (When the control mode is
the full-closed control mode and SV.Pr46 = 2, 3).
• SV.Pr45=0 :
No division will be executed.
• SV.Pr45≠0 :
The pulse output resolution per one revolution can be divided by any ration
according to the formula below.




<Cautions>
• The setting of SV.Pr44>SV.Pr45 is invalid. (For the setting above, no division will
be executed.)
• Z-phase of the external scale is not reproduced.
A
B
Z
Synchronized
A
B
Z
Not-synchronized
SV.Pr44
SV.Pr45
when encoder resolution x is multiple of 4
SV.Pr44
SV.Pr45
when encoder resolution x is not multiple of 4
SV.Pr45
(Denominator of output pulse ratio)
SV.Pr44 
(Numerator of output pulse ratio)
Pulse output resolution
per one revolution
The pulse of external 
scale output resolution 
one resolution
46
*
0 to 3
<0>
Pulse output logic
inversion
You can set up the B-phase logic and the output source of the pulse output (X5 OB+
: Pin-48, OB– : Pin-49). With this parameter, you can reverse the phase relation
between the A-phase pulse and the B-phase pulse by reversing the B-phase logic.
*1 The output source of SV.Pr46=2, 3 is valid only at full-closed control.
Setup
value

<0>, 2

1, 3
A-phase
(OA)

B-phase(OB)
non-reversal
B-phase(OB)
reversal
at motor CCW rotation at motor CW rotation
SV.Pr46
<0>
1
2 *1
3 *1
B-phase logic
Non-reversal
Reversal
Non-reversal
Reversal
Output source
Encoder position
Encoder position
External scale position
External scale position
=x
<Notes>
• For servo parameters which No. have a suffix of "*", changed contents will be validated when you turn on
the control power.
• Parameters which default values have a suffix of "*" will be automatically set up during real time auto-gain
tuning. When you change manually, invalidate the real-time auto-gain tuning first then set, referring to
P.151, "Release of Automatic Gain Adjusting Function" of Adjustment.