Mitsubishi NZ2GFCF-D62PD2, User Manual

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3.2.1
The input waveform and the phase difference between phase
A pulse and phase B pulse
The count may be done incorrectly by inputting pulses whose phase difference is small between the phase A pulse
and phase B pulse in 2-phase input.
The following figures show the pulse waveform to be input and the phase difference between the phase A pulse and
phase B pulse. (Though the following are the cases for the differential input, they are also applied to the DC input.)
Though the following are the pulse waveform to be input and the phase difference measured at the maximum counting
speed of each pulse input condition, they are also applied to the case measured at under the maximum counting
speed.
(1) Input waveform in 1-phase input
Input pulse waveform in 1-phase input must satisfy the condition shown below (the duty ratio is 50%).
t (= t
H
+ t
L
) 0.5 s
t
H
, t
L
0.25 s (= 0.5 t)
Differential
voltage
H level
L level
t
0.1V -0.1V 0.1V
t
H
t
L