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MELSEC-Q
2 INPUT MODULE SPECIFICATIONS
2.14 QX70 DC Input Module (Positive Common/Negative Common Shared Type)
Type
Specifications
DC input module (Positive/negative shared common type)
QX70 Appearance
Number of input points 16 points
Isolation method Photocoupler
Rated input voltage
5VDC
(+20/-10%, ripple ratio within 5%)
12VDC
(+20/-15%, ripple ratio within 5%)
Rated input current Approx. 1.2mA Approx. 3.3mA
Input derating None
ON voltage/ON current 3.5V or higher/1mA or higher
OFF voltage/OFF current 1V or lower/0.1mA or lower
Input resistance Approx. 3.3kΩ
Response
time
OFF to ON
1ms/5ms/10ms/20ms/70ms or less (configured in PLC parameter)
1
(Default: 10ms)
ON to OFF
1ms/5ms/10ms/20ms/70ms or less (configured in PLC parameter)
1
(Default: 10ms)
Dielectric withstand voltage 560VAC rms/3 cycles (altitude 2000m)
Insulation resistance 10MΩ or more by insulation resistance tester
Noise immunity
By noise simulator of 500Vp-p noise voltage,
1 s noise width and 25 to 60Hz noise frequency
First transient noise IEC61000-4-4: 1kV
Protection degree IP2X
Common terminal arrangement 16 points/common (common terminal: TB17)
Number of occupied I/O points 16 points (I/O assignment is set as a 16-point input module.)
Operation indicator ON indication (LED)
External connections 18-point terminal block (M3 6 screw)
Applicable wire size
Core cable: 0.3 to 0.75mm
2
(Outside diameter: 2.8mm or smaller)
Applicable crimping terminal R1.25-3 (Sleeved crimping terminals cannot be used.)
Internal current consumption
(5VDC)
55mA (TYP, all points ON)
(0.06A is shown on the rating plate of the module.)
Weight 0.14kg
External connection Terminal block No. Signal name
TB1 X00
TB2 X01
TB3 X02
TB4 X03
TB5 X04
TB6 X05
TB7 X06
TB8 X07
TB9 X08
TB10 X09
TB11 X0A
TB12 X0B
TB13 X0C
TB14 X0D
TB15 X0E
TB16 X0F
TB17 COM
TB18 Vacant
1
: For the setting method, refer to Section 1.3.1.
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
COM
QX70
NC
+-
01234567
8 9 ABCDEF
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
5/12VDC
1.2mA
3.3mA
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