User`s manual

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MELSEC-Q
2 INPUT MODULE SPECIFICATIONS
2.14 QX81 DC Input Module (Negative Common Type)
DC Input Module (Negative Common Type) Type
Specifications
QX81 Appearance
Number of input points 32 points
Isolation method Photocoupler
Rated input voltage 24VDC (+20/-15%, ripple ratio within 5%)
Rated input current Approx. 4mA
Input derating Refer to the derating chart.
ON voltage/ON current 19V or higher/3mA or higher
OFF voltage/OFF current 11V or lower/1.7mA or lower
Input impedance Approx. 5.6k
OFF to ON
1ms/5ms/10ms/20ms/70ms or less (CPU parameter setting)
1
Initial setting is 10ms.
Response
time
ON to OFF
1ms/5ms/10ms/20ms/70ms or less (CPU parameter setting)
1
Initial setting is 10ms.
Dielectric withstand voltage 560VAC rms/3 cycles (altitude 2000m (6557.38ft.))
Insulation resistance 10M or more by insulation resistance tester
By noise simulator of 500Vp-p noise voltage, 1 s noise width
and 25 to 60Hz noise frequency
Noise immunity
First transient noise IEC61000-4-4: 1kV
Protection of degree IP2X
Common terminal arrangement 32 points/common (common terminal: 17, 18, 36)
Number of I/O points 32 (I/O allocation is set as a 32-points input module)
Operation indicator ON indication (LED)
External connections 37-pin D-sub connector
Applicable wire size
0.3mm
2
(For A6CON1E) 2
External wiring connector A6CON1E, A6CON2E, A6CON3E (optional)
Applicable connector/terminal block
conversion module
A6TBX36-E, A6TBX54-E, A6TBX70-E
5VDC internal current consumption 75mA (TYP. all points ON)
Weight 0.16kg
QX81
24VDC
4mA
QX81
01234567
89ABCDEF
01234567
89ABCDEF
Derating Chart Pin-Outs
Pin
No.
Signal
No.
Pin
No.
Signal
No.
1 X00 9 X10
20 X01 28 X11
2 X02 10 X12
21 X03 29 X13
3 X04 11 X14
22 X05 30 X15
4 X06 12 X16
23 X07 31 X17
100
90
80
70
60
50
40
0102030405055
ON
ratio
28.8VDC
(%)
( )
C
Ambient tem
p
erature
5 X08 13 X18
External Connections
24 X09 32 X19
6 X0A 14 X1A
25 X0B 33 X1B
7 X0C 15 X1C
26 X0D 34 X1D
8 X0E 16 X1E
27 X0F 35 X1F
17 COM 37 Vacant
36 COM 19 Vacant
1
17,18,36
LED
LED
35
Internal
circuit
24VDC
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Module front view
18 COM
1
: For the setting method, refer to the section 1.3.1.
2
: When using A6CON2E or A6CON3E, refer to Chapter 7.