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Operation
• Execute operation so that the machine speed of the input axis is equal to or less than "[Cam control data
No. 48 - Cam axis length per cycle] × 1/2 × 1000 [command unit/s]". Failure to do so may cause the input
axis and output axis to become out of synchronization.
A rotary knife system is shown as an example of the operation of the simple cam function.
Configuration example
The rotary knife cuts the sheet conveyed by the conveyor at a constant speed into a desired length.
The cutting positions are compensated based on detection of the registration marks printed on the sheet to prevent variations
in the sheet length and deviations in cutting position.
A/B-phase output
Machine
*1
speed
Synchronous encoder
Conveyor axis
Drives the conveyor using an inverter or
other servo amplifier
*1 Set the machine speed of the input axis to a value that satisfies the following equation.
Machine speed ≤ [Cam control data No. 48 - Cam axis length per cycle] × 1/2 × 1000 [command unit/s]
To check the machine speed, monitor the main axis current value with the graph function of MR Configurator2.
The machine speed is calculated as follows:
Machine speed = (L2 - L1)/(T2 - T1)
L2
L1
T1
9 MANUFACTURER FUNCTIONS
228
9.5 Simple cam function
Touch probe
Rotary knife axis
Main axis current value
T2
Servo amplifier
MR-J4-GF-RJ
Servo motor for driving the cam axis
Time
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