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11 MANUAL CONTROL
Pr.1
Unit setting
Manual pulse
generator 1 pulse
movement amount
Position control by manual pulse generator operation
In manual pulse generator operation, the position is moved by a "manual pulse
generator 1 pulse movement amount" per pulse.
The current feed value in the positioning control by manual pulse generator
operation can be calculated using the expression shown below.
Current feed value = Number of input pulses ×
pulse input magnification × Manual pulse generator 1 pulse
movement amount
mm
0.1µm
For example, when "
generator 1 pulse input magnification" is 2, and 100 pulses are input from the
manual pulse generator, the current feed value is as follows.
100 × 2 × 0.1 = 20 [µm]
The number of pulses output actually to the drive unit is "Manual pulse generator 1
pulse movement amount/movement amount per pulse
Pr.1
"
Unit setting" is mm and the movement amount per pulse is 1 µm, 0.1/1 =
1/10, i.e., the output to the drive unit per pulse from the manual pulse generator is
1/10 pulse. Thus, the QD75 outputs 1 pulse to the drive unit after receiving 10
pulses from the manual pulse generator.
Movement amount per pulse =
Speed control by manual pulse generation operation
The speed during positioning control by manual pulse generator operation is a
speed corresponding to the No. of input pulses per unit time, and can be obtained
using the following equation.
Output command frequency = Input frequency
inch
0.00001inch
0.00001degree
Pr.1
Unit setting" is mm and "
Pr.3
Movement amount per rotation
Pr.2
No. of pulses per rotation
11 - 30
MELSEC-Q
Cd.20
Manual pulse generator 1
degree
Cd.20
Manual pulse
". For example, when
Pr.4
Unit magnification
Cd.20 Manual pulse generator
1 pulse input magnification
pulse
1pulse
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Troubleshooting
