Mitsubishi Electronics QD75D ユーザーズマニュアル

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MELSEC-Q

5   DATA USED FOR POSITIONING CONTROL

(3)   A phase/B phase mode

Forward run and reverse run are controlled with the phase difference of the A
phase (A ) and B phase (B ).

   

•

 When the B phase is 90° behind the A phase, the motor will forward run.

   

•

 When the B phase is 90° ahead of the A phase, the motor will reverse run.

Positive logic

Negative logic

1) For multiple of 1 setting

Forward run

Reverse run

A phase
(A    )

B phase
(B    )

When B phase is 
90° behind A phase

When B phase is
90° ahead of A phase

Command pulse output

Command pulse output

1) For multiple of 1 setting

Forward run

Reverse run

When B phase is 
90° behind A phase

When B phase is
90° ahead of A phase

Command pulse output

Command pulse output

2) For multiple of 4 setting

A phase
(A    )

B phase
(B    )

Forward run

Reverse run

When B phase is 
90° behind A phase

When B phase is
90° ahead of A phase

Command pulse output

Command pulse output

2) For multiple of 4 setting

Forward run

Reverse run

When B phase is 
90° behind A phase

When B phase is
90° ahead of A phase

Command pulse output

Command pulse output

Pr.6

Rotation direction setting

Set the relation of the motor rotation direction and current value address
increment/decrement.

[Setting procedure]

1) Set "0" in

Pr.6

, and carry out forward run JOG operation.

("0" is set as the default value for

Pr.6

.)

2) When workpiece "W" moves toward the address increment direction, keep the current setting.

When workpiece "W" moves toward the address decrement direction, set "1" in 

Pr.6

 

to change the

rotation direction.

3) Carry out forward run JOG operation again, and if "W" moves toward the increment direction, the

setting is complete.

M

W

QD75

1) Forward run pulse

Motor

Address decre-
ment direction

Address incre-
ment direction

2) Workpiece

OP

3)