Mitsubishi FX3UC Series, Руководство пользователя

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141
FX
3UC
Series Programmable Controllers
User’s Manual - Hardware Edition
5 Input Specifications and External wiring
5.2 24V DC Input Type
1
O
utline
2
Exter
nal
D
im
en
sions
3
Ge
ne
ric
Speci
ficat
ions
4
Pow
er Suppl
y
Specif
icati
ons
5
Input Spec
ific
ations
6
O
utput
Specif
icat
ions
7
Exam
pl
es
of
W
iri
ng
fo
r
Va
rious U
ses
8
Te
rm
inal B
lock
9
CC
-L
in
k/L
T
Ma
ste
r F
X
3UC
(LT
only)
10
D
ispl
ay m
odule
FX
3UC
(L
T only)
2. Input circuit
The primary and secondary circuits for input are insulated with a photocoupler, and the second circuit is
provided with a C-R filter.
The C-R filter is designed to prevent malfunctions caused by chattering of the input contact and noise from
the input line.
X000 to X017
*1
have digital filters, and the filter time can be changed in increments of 1ms in the range from
0 to 60ms through applied instructions. When 0 is specified for the time, the input filter values are set as
shown in the following table.
*1. X000 to X007 in the FX
3UC
-16M .
*2. When setting the input filter to 5
µ
s or capturing pulses of a response frequency of 50 to 100kHz with a
high-speed counter, wire the terminals as stated below.
-
The wiring length should be 5m or less.
- Connect a bleeder resistance of 1.5k
Ω
(1W or more) to the input terminal, so that the sum of the
load current of the open collector transistor output on the mating device and the input current of the
main body is 20mA or more.
→
For wiring of the input interrupt, pulse catch, or the rotary encoder, refer to
Section 7.2 and 7.3.
3. Input sensitivity
The Main units input current and input sensitivity are shown in the following table.
When DC diodes or resistors are provided at input contacts or when parallel resistors or leakage current are
present at input contacts, perform wiring in accordance with Subsection 5.2.4.
Input number Input filter value when 0 is specified
X000 to X005
5
µ
s
*2
X006, X007 50
µ
s
X010 to X017
200
µ
s
Item X000 to X005 X006, X007 X010 or more
Input voltage 24V DC +20% -15% Ripple Voltage (p-p) 5% or less
Input current 6mA 7mA 5mA
Input sensitivity
current
ON 3.5mA or more 4.5mA or more 3.5mA or more
OFF 1.5mA or less 1.5mA or less 1.5mA or less