Yaskawa MP920 User's Manual Design - Manual (Page 129)

4.2 Control Modes
4-15
4
The example in the above illustration has been greatly simplified. In actual operation, each
register can be controlled from the user program.
4.2.4 Phase Control Mode
„ Overview
This mode is used to rotate the motor according to the specified speed reference, and at the
same time to strictly control the number of rotations.
Phase control uses multiple axes, ensuring that no deviation occurs in the angle of rotation
(phase) for the motors and enabling endless rotation for printing and other machines being
controlled.
Electronic shafts and electronic cams can thus be used in the servomotors of complex
machine configurations. Phase alignment and synchronous operation, as well as ratio opera-
tion and cam variable speed operation have all been replaced by software.
Fig. 4.5 Electronic Cam and Electronic Shaft Illustration
The phase output mode can be used only with SVA-01A and SVA-02A Modules. It cannot be used with
SVB-01 or PO-01 Module.
M
M M M
MP920
Using a machine to perform conventional synchronous
operation (Line shaft and cam system)
Controller
Driver
Gear
Cam
No.1 roll Cam machine
Using the MP920 to perform synchronous operation
(Electronic shaft and electronic cam system)
Gear Gear
No.2 roll
Driver
No.1 roll Cam machine No.2 roll
IMPORTANT