2 - 6                 2 - 6 
MELSEC-Q 
2   INPUT MODULE SPECIFICATIONS 
2.6 QX40-TS DC Input Module (Positive Common Type) 
This module is a spring clamp terminal block type and an input module that has 
indicators for checking the insertion state of wire. 
Type 
Specifications 
DC input module (Positive common type) 
QX40-TS Appearance 
Number of input points  16 points 
 
Isolation method  Photocoupler 
Rated input voltage  24VDC (+20/-15%, ripple ratio within 5%) 
Rated input current  Approx. 4mA 
Input derating  No 
ON voltage/ON current  19V or higher/3mA or higher 
OFF voltage/OFF current  11V or lower/1.7mA or lower 
Input impedance  Approx. 5.6kΩ 
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  Two-piece spring clamp terminal block 
Applicable wire size 
0.3 to 2.0mm
2
 core (22 to 15 AWG) 
Applicable crimping terminal  Refer to section 9.1 
Internal current consumption 
(5VDC) 
50mA (TYP. all points ON) 
Weight 0.16kg 
 
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. 
 
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
18
17
0
8
1
9
2
A
3
B
4
C
5
D
6
E
7
F
QX40-TS
11