Mitsubishi Electronics Mitsubishi Programmable Logic Controller QD75P 사용자 설명서
5 - 22
MELSEC-Q
5 DATA USED FOR POSITIONING CONTROL
However, the maximum value that can be set for this "movement amount per
rotation (Al)" parameter is 6553.5
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.
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
×
1/n = 6000.0
µ
m (= 6mm)
Movement amount per rotation (AL)
= Movement amount per rotation (Al)
×
Unit magnification (Am)
= 6000
×
1
Example 2)
When movement amount per rotation (AL) = PB
×
1/n = 60000.0
µ
m (= 60mm)
Movement amount per rotation (AL)
= Movement amount per rotation (Al)
×
Unit magnification (Am)
= 6000
×
10
= 600
×
100
M
G
1
n
n
P
f
P
B
PLC
PLC CPU
QD75
Servo amplifier
Servomotor
Workpiece
Encoder
Reduction gears
: Worm gear lead (mm/rev)
: Deceleration rate
: No. of encoder pulses (pulse/rev)
: Deceleration rate
: No. of encoder pulses (pulse/rev)
P
B
1/n
P
P
f
Movement amount per pulse
1
n
n
P
B
P
f
=
[mm/pulse]
Setting value, setting range
Setting value buffer memory
address
Item
Value set with peripheral device
Value set with sequence
program
Default
value
Axis 1 Axis 2 Axis 3 Axis 4
0 : PULSE/SIGN mode
0
1 : CW/CCW mode
1
2 : A phase/B phase
(multiple of 4)
2
Pr.5
Pulse output mode
3 : A phase/B phase
(multiple of 1)
3
1
4
154
304
454
0 : Current value increment with
forward run pulse output
0
Pr.6
Rotation direction setting
1 : Current value increment with
reverse run pulse output
1
0
5
155
305
455