Mitsubishi Electric MR-J4-_GF, Instruction Manual

Page: 190 / 274

9. MANUFACTURER FUNCTIONS
9 - 5
9.5 Simple cam function
CAUTION
The number of write times to the Flash-ROM where the cam data is stored is
limited to 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
The simple cam function can be used with the point table method.
When [AL. F5.2 Cam data miswriting warning] occurs during cam data writing,
set [Pr. PT34] to "5010" to initialize the cam data.
Simple cam function is not compatible with infinite feed function. When using the
infinite feed function, configure the incremental system.
When using simple cam function, 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]".
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], 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].
9.5.1 Outline of simple cam function
Simple cam function enables synchronous control by using software instead of controlling mechanically with
cam.
The following shows a path when the cam as follows 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
In the simple cam function, setting cam data and cam control data enables synchronous control with an input
axis (synchronous encoder input or point table command) with a start of positioning.