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MELSEC-Q
2 INPUT MODULE SPECIFICATIONS
2.3 QX28 AC Input Module
Type
Specifications
AC input module
QX28 Appearance
Number of input points 8 points
Isolation method Photocoupler
Rated input voltage, frequency 100-240VAC (+10/-15%) 50/60Hz (±3Hz)
Input voltage distortion Within 5% (Refer to section 1.2)
Rated input current
Approx. 17mA (200VAC, 60Hz), approx. 14mA (200VAC, 50Hz)
Approx. 8mA (100VAC, 60Hz), approx. 7mA (100VAC, 50Hz)
Input derating Refer to the derating chart.
Inrush current Max. 950mA within 1ms (at 264VAC)
ON voltage/ON current 80VAC or higher/5mA or higher (50Hz, 60Hz)
OFF voltage/OFF current 30VAC or lower/1.7mA or lower (50Hz, 60Hz)
Input impedance Approx. 12kΩ (60Hz), approx. 15kΩ (50Hz)
Response
time
OFF to ON 10ms or less (200VAC 50Hz, 60Hz)
ON to OFF 20ms or less (200VAC 50Hz, 60Hz)
Dielectric withstand voltage 2830VAC rms/3 cycles (altitude 2000m)
Insulation resistance 10MΩ or more by insulation resistance tester
Noise immunity
By noise simulator of 1500Vp-p noise voltage, 1 s noise width
and 25 to 60Hz noise frequency
First transient noise IEC61000-4-4: 1kV
Protection degree IP1X
Common terminal arrangement 8 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 screws)
Applicable wire size 0.3 to 0.75mm
2
core (2.8mm OD max.)
Applicable crimping terminal R1.25-3 (Sleeved crimping terminals cannot be used.)
Internal current consumption
(5VDC)
50mA (TYP. all points ON)
Weight 0.20kg
Derating chart Terminal block No. Signal name
TB1 X00
TB2 Vacant
TB3 X01
TB4 Vacant
TB5 X02
TB6 Vacant
TB7 X03
External connection TB8 Vacant
TB9 X04
TB10 Vacant
TB11 X05
TB12 Vacant
TB13 X06
TB14 Vacant
TB15 X07
TB16 Vacant
TB17 COM
TB18 Vacant
NC
1
NC
2
NC
3
NC
4
NC
5
NC
6
NC
7
NC
COM
QX28
NC
200VAC
17mA60Hz
14mA50Hz
01234567
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
100
90
80
70
60
50
40
0102030405055
ON
ratio
Ambient temperature
(%)
( )
C
100% 55 C
87.5% 55 C
100% 45 C
240V
264V
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