Mitsubishi MR-JE-100A, Инструкция по эксплуатации

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6. APPLICATION OF FUNCTIONS
6 - 27
6.1.9 Operation
POINT
When using simple cam function, execute operation so that the machine speed
of the input axis is less than "([Cam control data No. 48 - Cam axis one cycle
length] × 1/2) / 100 [command unit/s]". When [Cam control data No. 30] is set to
"1", the unit of the Cam axis length per cycle will be changed to [mm], [inch],
[degree], or [pulse] with the setting of [Pr. PT01]. When [Cam control data No.
30] is set to "2", the unit of the Cam axis length per cycle will be changed to
[mm], [inch], [degree], or [pulse] with the setting of [Cam control data No. 14].
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.
CN2
CN1
Rotary knife
axis
Mark sensor
MR-JE-A
servo amplifier
Synchronous
encoder
Servo motor for driving the cam axis
A/B-phase
output
Connect to PP-PG and NP-NG.
Assign the CPPD input signal and connect.
Conveyor axis
A belt conveyor is driven by an inverter or
another servo amplifier.
Machine
speed (Note)
Note. Set the machine speed of the input axis to a value that satisfies the following equation.
The machine speed axis ≤ [Cam control data No. 48 Cam axis one cycle length] × 1/2 × 1000 [command unit/s]
With the graph function of MR Configurator2, you can check the machine speed by observing the waveform of the main axis
current value.
The machine speed can be calculated by the following equation.
The machine speed = (L2 - L1)/(T2-T1)
Main axis current value
Time T2 T1
L1
L2
Fig. 6.1 System configuration example