Function Block Diagram For Displaying State Of Simple Cam Control; Operation - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

12. APPLICATION OF FUNCTIONS

12.1.8 Function block diagram for displaying state of simple cam control

ECMX
Input pulse of
synchronous encoder
ECDV
Point table command

12.1.9 Operation

This section explains an operation using the simple cam function with concrete examples.
(1) Example of a rotary knife device
(a) Configuration example
The rotary knife cuts the sheet conveyed by the conveyor at a constant speed into a desired length.
To prevent variations in the sheet length and a cutting position mismatch, this device reads
registration marks that have been printed on the sheet, and compensates cutting positions.
A/B-phase
output
Synchronous
encoder
Conveyor axis
A belt conveyor is driven by an inverter or
another servo amplifier.
Main axis current value
Main axis one cycle
current value
+
Clutch
-
Cam position
compensation
processing
Mark sensor
Rotary knife
axis
Servo motor for driving the cam axis
Fig. 12.1.1 System configuration example
12 - 28
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Cam axis one cycle current value
Cam No. in execution
Cam standard position
Cam axis feed current value
Cam stroke amount in execution
Cam
CMX
conversion
CDV
processing
MR-J4-A-RJ
servo amplifier
Connect to PP-PG and NP-NG.
CN1
Assign the CPPD input signal and connect.
CN2
Servo motor
+
M
-
Encoder