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2 INPUT MODULE SPECIFICATIONS
2.21 QX81 DC Input Module (Negative Common Type)
Specifications
Number of input points
Isolation method
Rated input voltage
Rated input current
Input derating
ON voltage/ON current
OFF voltage/OFF current
Input impedance
OFF to ON
Response
time
ON to OFF
Dielectric withstand voltage
Insulation resistance
Noise immunity
Protection degree
Common terminal arrangement
Number of occupied I/O points
Operation indicator
External connections
Applicable wire size
Applicable connector
Applicable connector/terminal block
converter module
Internal current consumption
(5VDC)
Weight
(%)
100
90
80
ON
70
ratio
60
50
40
0
1 : For the setting method, refer to Section 1.3.1.
2: When using A6CON2E or A6CON3E, refer to Chapter 7.
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Type
24VDC (+20/-15%, ripple ratio within 5%)
1ms/5ms/10ms/20ms/70ms or less (configured in PLC parameter)
1ms/5ms/10ms/20ms/70ms or less (configured in PLC parameter)
560VAC rms/3 cycles (altitude 2000m)
10MΩ or more by insulation resistance tester
By noise simulator of 500Vp-p noise voltage, 1
First transient noise IEC61000-4-4: 1kV
32 points/common (common terminal: 17, 18, 36)
32 points (I/O assignment is set as a 32-point input module.)
0.088 to 0.3mm
A6CON1E, A6CON2E, A6CON3E (optional)
A6TBX36-E, A6TBX54-E, A6TBX70-E
(0.08A is shown on the rating plate of the module.)
Derating chart
10
20
30
40
50 55
Ambient temperature
External connection
DC input module (Negative common type)
QX81
32 points
Photocoupler
Approx. 4mA
Refer to the derating chart.
19V or higher/3mA or higher
11V or lower/1.7mA or lower
Approx. 5.6kΩ
(Default: 10ms)
(Default: 10ms)
and 25 to 60Hz noise frequency
IP2X
ON indication (LED)
37-pin D-sub connector
(For A6CON1E)
2
75mA (TYP. all points ON)
0.16kg
28.8VDC
(
)
C
MELSEC-Q
QX81
0 1 2 3 4 5 6 7
8 9 A B C D E F
0 1 2 3 4 5 6 7
8 9 A B C D E F
24VDC
1
4mA
1
s noise width
2
Pin
Pin-Outs
No.
1
20
2
19
21
37
18
36
17
3
35
16
34
22
15
33
14
4
32
13
31
23
12
30
11
5
29
10
28
24
9
27
8
6
26
7
25
6
25
24
5
7
23
4
22
3
26
21
2
20
8
1
27
17
Module front view
36
18
Appearance
QX81
Signal
Pin
Signal
No.
No.
No.
X00
9
X10
X01
28
X11
X02
10
X12
X03
29
X13
X04
11
X14
X05
30
X15
X06
12
X16
X07
31
X17
X08
13
X18
X09
32
X19
X0A
14
X1A
X0B
33
X1B
X0C
15
X1C
X0D
34
X1D
X0E
16
X1E
X0F
35
X1F
COM
37
Vacant
COM
19
Vacant
COM
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