Mitsubishi Electric MELSEC-Q Series - Page 280

6 - 93
6 POSITIONING CONTROL
[Cautions]
(1) The operation for feed current value is as follows. When speed control (
) is
executed in the absolute position system, the feed current value that is restored
when the control circuit power supply of the servo amplifier or the Multiple CPU
system power supply is turned ON again, may be different from the feed current
value before the power supply was turned ON again.
(a) Q173DSCPU/Q172DSCPU
When feed current value update command (M3212+20n) is OFF, the feed
current value is changed to "0".
(b) Q173DCPU(-S1)/Q172DCPU(-S1)
The feed current value is changed to "0" at the start.
(2) The dwell time cannot be set.
[Program]
Program for speed control (
) is shown as the following conditions.
(1) System configuration
Speed control ( ) of Axis 1.
Start/stop command (PX000)
Q172D
CPU
Q172D
LX
QX41 QY41PQ61P Q03UD
CPU
Motion CPU control module
AMP
M
Axis
1
AMP
M
Axis
2
AMP
M
Axis
4
AMP
M
Axis
3
(2) Speed control ( ) conditions
(a) Speed control ( ) conditions are shown below.
Item Setting
Servo program No. No.91
Control axis Axis 1
Control speed 3000
Rotation direction Forward
(b) Speed control (
) start command........ PX000 Leading edge (OFF ON)
(c) Stop command......…………………… PX000 Trailing edge (ON
OFF)