Mitsubishi Electric QD75P1N User Manual page 126

5 DATA USED FOR POSITIONING CONTROL
1) For multiple of 1 setting
Forward run
Command 1 pulse output
A phase
(A )
B phase
(B )
When B phase is
90° behind A phase
Example) When the command 1 pulse output is 1 pulse/s, the pulse rises and falls by four
times per second.
2) For multiple of 4 setting
Forward run
Command 1 pulse output
A phase
(A )
B phase
(B )
When B phase is
90° behind A phase
Example) When the command 1 pulse output is 1 pulse/s, the pulse rises and falls by one times
per second.
(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
Reverse run
Command 1 pulse output
When B phase is
90° ahead of A phase
Positive logic
Reverse run
Command 1 pulse output
When B phase is
90° ahead of A phase
Forward run
Command 1 pulse output
A phase
(A )
B phase
(B )
When B phase is
90° behind A phase
Forward run
Command 1 pulse output
A phase
(A )
B phase
(B )
When B phase is
90° behind A phase
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MELSEC-Q
Negative logic
Reverse run
Command 1 pulse output
When B phase is
90° ahead of A phase
Negative logic
Reverse run
Command 1 pulse output
When B phase is
90° ahead of A phase