Mitsubishi Electric MELSEC-L LD75D, User Manual

Page: 124 / 818

122
(b) CW/CCW mode
During forward run, the forward run feed pulse (PULSE F) will be output.
During reverse run, the reverse run feed pulse (PULSE R) will be output.
(c) 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.
Ex.
For multiple of 1 setting, when the command 1 pulse output is 1 pulse/s, the pulse rises and falls by four
times per second.
Ex.
For multiple of 4 setting, when the command 1 pulse output is 1 pulse/s, the pulse rises and falls by one
times per second.
Positive logic Negative logic
Positive logic Negative logic
Positive logic Negative logic
Forward
run
CW
CCW
Reverse
run
Forward
run
Reverse
run
CW
CCW
A phase
(A
φ
)
B phase
(B
φ
)
Forward run
When B phase is
90° behind A phase
When B phase is
90° ahead of A phase
Command 1 pulse output
Reverse run
Command 1 pulse output
A phase
(A
φ
)
B phase
(B
φ
)
Forward run
When B phase is
90° behind A phase
When B phase is
90° ahead of A phase
Command 1 pulse output
Reverse run
Command 1 pulse output
A phase
(A
φ
)
B phase
(B
φ
)
Forward run
When B phase is
90° behind A phase
When B phase is
90° ahead of A phase
Command 1 pulse output
Reverse run
Command 1 pulse output
A phase
(A
φ
)
B phase
(B
φ
)
Forward run
When B phase is
90° behind A phase
When B phase is
90° ahead of A phase
Command 1 pulse output
Reverse run
Command 1 pulse output