Panasonic Minas A4 Series - Page 220

218
Parameter Setup
47
*
0 to 32767
<0>
Z-phase setup of
external scale
You can setup the interval of Z-phase output in the A-phase output pulses of the
external scale (before quadruple), when you use the external scale as an output
source for the pulse output. (Pr02, (Control mode setup) is 6 and Pr46 (Reversal of
pulse output logic) is 2 or 3.)
• when Pr47 = <0> (default),
no Z-phase is fed out of the external scale.
• when Pr47 = 1 to 32767, 
Z-phase will be fed out synchronizing with A-phase when the work crosses the
absolute position of 0 at first time after the control power on. After this, Z-phase
will be fed out at the intervals set with this parameter.
46
*
0 to 3
<0>
Reversal of pulse
output logic
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 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
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
48



49


4A


4B
0 to 10000
<0>

0 to 10000
<0>

0 to 17
<0>

0 to 10000
<10000>


1st numerator of
electronic gear

2nd numerator of
electronic gear

Multiplier of 
electronic gear 
numerator
Denominator of
electronic gear
Electronic gear (Command pulse division/multiplication) function 
• Purpose of this function
(1) You can set up any motor revolution and travel per input command unit.
(2) You can increase the nominal command pulse frequency when you cannot
obtain the required speed due to the limit of pulse generator of the host controller.
• Block diagram of electronic gear
• "Numerator" selection of electronic gear
*1 : Select the 1st or the 2nd with the command electronic gear input switching
(DIV : CN X5, Pin-28)
• when numerator ≠ 0 :
• when the numerator is <0> (Default) :Numerator (Pr48,49)X2
Pr4A
) is automat-
ically set equal to encoder resolution.
The electronic gear ratio is set with the formula below.
<Caution> 
In actual calculation of numerator (Pr48, Pr49) X2
Pr4A
, 4194304 (Pr4D setup value
+1) becomes the max. value.
Electronic gear function-related (Pr48 to 4B)
Command
pulse
x 2
*1
*1
Multiplier (Pr4A)
Internal
command
F
f
+
–
External scale
Feed back
pulse
(Resolution)
Deviation
counter
Denominator (Pr4B)
1st numerator (Pr48)
2nd numerator (Pr49)
DIV input open
DIV input connect to COM–
Selection of 1st numerator (Pr48)
Selection of 2nd numerator (Pr49)
Encoder resolution
Command pulse counts per one revolution (Pr48)
Electronic gear ratio =
x 2
Denominator of command electronic gear (Pr4B)
Electronic gear ratio =
PrNo.
Setup
range
Title Function/Content
Standard default : < >
Numerator of command 
electronic gear (Pr48,49)
Multiplier of command 
div/multiple numerator (Pr4A)