Mitsubishi Electric QD62 User Manual page 57

5 BASIC USAGE
In the case of addition in 1-phase pulse input, make sure that phase B pulse input
and the subtraction count command {Y03(Y0B)} are OFF before performing pulse
input of phase A.
If either of phase B pulse input or the subtraction count command {Y03(Y0B)} is
ON, subtraction count is performed in pulse input of phase A.
(1) Phase 1 pulse input
(2) CW/CCW pulse input
(3) Phase 2 pulse input
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POINT
For phase 1 pulse input, either a multiple of 1 or multiple of 2 count method can
be selected.
The relationship between the phase A pulse input and the down count command
is shown below.
Pulse input
Encoder
Down count command
(Or, when Y03 (Y0B) turns ON)
For CW/CCW pulse input, the up count is performed when there is a phase A
pulse input, and the down count is performed when there is a phase B pulse input.
The relationship between the phase A pulse input and phase B pulse input is
shown below.
Addition pulse input
Encoder
Subtraction pulse input
Encoder
For phase 2 pulse input, either a multiple of 1, multiple of 2, or multiple of 4 count
method can be selected.
The phase difference between the phase A pulse and phase B pulse determines
whether the up count or down count is performed.
The relationship between the phase A pulse input and phase B pulse input is
shown below.
Phase A pulse input
Encoder
Phase B pulse input
QD62(E/D)
A
B
QD62(E/D)
A
B
QD62(E/D)
A
B
MELSEC-Q
5
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