Mitsubishi MELSEC QD75P User Manual page 110

5 DATA USED FOR POSITIONING CONTROL
PLC
PLC CPU
Movement amount per pulse
Item
Pr.5
Pulse output mode
Pr.6
Rotation direction setting
However, the maximum value that can be set for this "movement amount per
rotation (Al)" parameter is 6553.5 µ m (approx. 6.5mm). Set the "movement amount
per rotation (Al)" as shown below so that the "movement amount per rotation (AL)"
does not exceed this maximum value.
Movement amount per rotation (AL)
= PB × 1/n
= Movement amount per rotation (Al) × Unit magnification (Am)
Note) The unit magnification (Am) is a value of 1, 10, 100 or 1000. If the "PB ×
1/n" value exceeds 6553.5 µ m, adjust with the unit magnification so that the
"movement amount per rotation (Al) " does not exceed 6553.5 µ m.
Example 1)
When movement amount per rotation (AL) = PB
Movement amount per rotation (AL)
= Movement amount per rotation (Al) × Unit magnification (Am)
= 6000
Example 2)
When movement amount per rotation (AL) = PB
Movement amount per rotation (AL)
= Movement amount per rotation (Al) × Unit magnification (Am)
= 6000
=
Servo amplifier
QD75
P 1
B
=
[mm/pulse]
P n
f
Setting value, setting range
Value set with peripheral device
0 : PULSE/SIGN mode
1 : CW/CCW mode
2 : A phase/B phase
(multiple of 4)
3 : A phase/B phase
(multiple of 1)
0 : Current value increment with
forward run pulse output
1 : Current value increment with
reverse run pulse output
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×
×
×
600 100
Servomotor
M G
Encoder
P
f
P : Worm gear lead (mm/rev)
B
1/n : Deceleration rate
P : No. of encoder pulses (pulse/rev)
f
Value set with sequence
program
0
1
2
3
0
1
5 - 22
MELSEC-Q
1/n = 6000.0 µ m (= 6mm)
×
1
1/n = 60000.0 µ m (= 60mm)
×
10
Workpiece
Reduction gears
1
n
Setting value buffer memory
Default address
value
Axis 1 Axis 2 Axis 3 Axis 4
1 4 154 304
0 5 155 305
P
B
454
455