Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 571

12. APPLICATION OF FUNCTIONS
(b) Operation
The following table shows an example of the procedure before operation.
Step
1. Data setting
2. Initial position adjustment
3. Selecting cam data
4. Servo-on
5. Switching cam control
6. Starting the conveyor axis
Note 1. Use Cam number setting (2D80h) to select a cam No. via the Modbus-RTU communication.
2. Use C_CAMC (Control input (bit 5 of 2D02h)) to input a cam control command via the Modbus-RTU communication. The
output status during cam control can be read with S_CAMS (Control output (bit 5 of 2D12h)).
MD0
(Operation mode selection 1)
SON (Servo-on)
Cam No.
CAMC
(Cam control command)
CAMS
(Under cam control)
Conveyor axis travel distance
(Main axis current value)
Cam axis one cycle
current value
Rotary knife angle
(Cam axis feed current
value)
Sheet
Refer to the setting example on the previous page and set the data.
Adjust the synchronous positions of the conveyor axis and rotary knife axis.
When the position of the conveyor axis (main axis current value) is "0", set the position of
the rotary knife axis (feed current value) to "0".
Since the position at power-on is "0", the home position return of the conveyor axis is not
required.
Perform the home position return on the rotary knife axis at the point where the blade of the
cutter becomes the top.
Adjust the conveyor axis and rotary knife axis so that the 0 position of both axes is located at
the center of the sheet length.
Select the cam data to be executed with CI0 to CI3 (Cam No. selection 0 to 3). The user can
use [Cam control data No. 49 - Cam No.] to select the cam data. (Note 1)
Switch on SON (Servo-on).
Switch on CAMC (Cam control command) to switch the control to the cam control. (Note 2)
Check that CAMS (During cam control) is on and start the conveyor axis. (Note 2)
The rotary knife axis is driven in synchronization with the conveyor axis.
ON
OFF
ON
OFF
0 1
ON
OFF
ON
Max. 20 ms
OFF
Cam one cycle
360°
180°
0°
Cutting position
Fig. 12.1.3 Timing chart
12 - 30
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Setting and operation
Cam one cycle Cam one cycle
Cutting position Cutting position
Cam one cycle
Cutting position