Mitsubishi Electric MELSERVO MR-J4-03A6-RJ, Instruction Manual

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12. APPLICATION OF FUNCTIONS
12 - 1
12. APPLICATION OF FUNCTIONS
This chapter explains about application of using positioning function of servo amplifier.
CAUTION
Note that the number of write times to the Flash-ROM where the cam data is
stored is limited to approximately 10000. If the total number of write times
exceeds 10000, the servo amplifier may malfunction when the Flash-ROM
reaches the end of its useful life.
12.1 Simple cam function
POINT
The simple cam function is available with servo amplifiers with software version
B7 or later.
The simple cam function can be used with the point table method and the
program method.
This function is not available with the servo amplifier to which the MR-D30 unit
has been connected.
When [AL. F5.2 Cam data miswriting warning] occurs during cam data writing,
set [Pr. PT34] to "5010" to initialize the cam data.
12.1.1 Outline of simple cam function
Simple cam function enables synchronous control by using software instead of controlling mechanically with
cam.
The following shows a movement trajectory when the cam below is used and the input axis is rotated once.
Output axis
Input axis
2
8
1
3 7
4
5
6
Cam stroke
amount
Bottom dead
center
Input axis
Cam one
cycle
length
0
360°
Cam axis one
cycle current
value
Feed current
value
1 2 3 4 5 6 7 8 1
Cam axis one cycle
0° 45° 90° 135° 180° 225° 270° 315° 360°
Output axis
Cam stroke
amount
By setting cam data and cam control data, the simple cam function enables synchronous control with an
input axis (external pulse command input, point table command, or program positioning command) with a
start of positioning.
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