Application Of Functions; Simple Cam Function; Outline Of Simple Cam Function - Mitsubishi MR-JE-200A Instruction Manual

6. APPLICATION OF FUNCTIONS

6. APPLICATION OF FUNCTIONS
This chapter explains about application of using positioning function of servo amplifier.
CAUTION

6.1 Simple cam function

6.1.1 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
1
3
4
5
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.
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.
POINT
When [AL. F5.2 Cam data miswriting warning] occurs during cam data writing,
set [Pr. PT34] to "5010" to initialize the cam data.
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].
Cam axis one
cycle current
value
8
Cam stroke
amount Feed current
value
Bottom dead
center
7
6
Input axis
360°
0
Output axis
1 2 3 4
0° 45° 90° 135° 180° 225° 270° 315° 360°
Cam axis one cycle
6 - 1
5 6 7 8 1
Cam one
cycle
length
Cam stroke
amount