Mitsubishi Electric MELSEC-L LD75P User Manual page 124

(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.
CW
CCW
Forward
run
(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.
For multiple of 1 setting, when the command 1 pulse output is 1 pulse/s, the pulse rises and falls by four
Ex.
times per second.
Forward run
Command 1 pulse output
A phase
(A φ )
B phase
(B φ )
When B phase is
90° behind A phase
For multiple of 4 setting, when the command 1 pulse output is 1 pulse/s, the pulse rises and falls by one
Ex.
times per second.
Forward run
Command 1 pulse output
A phase
(A φ )
B phase
(B φ )
When B phase is
90° behind A phase
122
Positive logic
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
Negative logic
CW
CCW
Forward
run
Negative logic
Forward run
Command 1 pulse output
A phase
(A φ )
B phase
(B φ )
When B phase is
90° behind A phase
Negative logic
Forward run
Command 1 pulse output
A phase
(A φ )
B phase
(B φ )
When B phase is
90° behind A phase
Reverse
run
Reverse run
Command 1 pulse output
When B phase is
90° ahead of A phase
Reverse run
Command 1 pulse output
When B phase is
90° ahead of A phase