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4 phase control mode, Overview, Details – Yaskawa MP940 User Manual

Page 417

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11.2 Control Modes

11-15

11

11.2.4 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.

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tion and cam variable speed operation have all been replaced by software.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 11.7 Electronic Cam and Electronic Shaft Illustration

„

Details

Use the following procedure to perform phase control operation.

1. Set the motion parameters. Use the user program to control the reference speed so that

no shock occurs.

The following three methods can be used to set the setting parameters.

• Using the CP-717 Setting Parameter Screen
• Using a ladder logic program
• Using a motion program

M

M

M

M

MP920

Using a machine to perform

conventional synchronous

operation (Line shaft and cam

system)

Controller

Driver

Gear

Gear

Gear

Cam

No.1 roll

No.2 roll Cam machine

Using the MP940 to perform synchro-

nous operation (Electronic shaft and

electronic cam system)

Driver

No.1 roll No.2 roll Cam machine

MP940

PCON

RUN

0

100%

1 Set the motion setting parameters.

2 Select the phase control mode (PHCON).

3 Start the phase control mode operation.

Phase control operation is performed.

4 Set the phase control mode to OFF.

: System execution

: User settings

Speed

(%)

Reference

speed

Position

Time

(t)