Mitsubishi Electric MELSEC Q Series Handbook page 92

3
REPLACEMENT OF I/O MODULE
(24)Specifications comparison between A1SX71 (24VDC, positive common) and QX41
Specifications
Number of input points
Isolation method
Rated input voltage
Rated input current
Operating voltage range
Maximum number of
simultaneous input points
On voltage/on current
Off voltage/off current
Input resistance
Off  on
Response
time
On  off
Common terminal
arrangement
Operation indication
External connection
system
Applicable wire size
Current consumption
External dimensions
Weight
*1 Check the specifications of the sensor or switches to be connected to the QX41.
*2 The following shows the derating chart.
3
- 39
A1SX71
32 points
Photocoupler
5/12/24VDC
5VDC Approx. 1.2mA
12VDC Approx. 3.3mA
24VDC Approx. 7mA
4.5 to 26.4VDC
(ripple ratio within 5%)
*2
Refer to the derating chart.
3.5VDC or more/1mA or more
1VDC or less/0.1mA or less
Approx. 3.5k
1ms/5ms/10ms/20ms/70ms or less
1.5ms or less
1ms/5ms/10ms/20ms/70ms or less
3ms or less
32 points/common
(common terminal: B1, B2)
On indication (LED)
40-pin connector
(accessory)
2
0.3mm
0.075A (typ. all points on)
130(H)34.5(W)93.6(D)mm
0.19kg
(A1SX71)
24VDC
26.4VDC
49 56
: Compatible,
Compat-
QX41
32 points
Photocoupler
24VDC
Approx. 4mA
20.4 to 28.8VDC
(ripple ratio within 5%)
*2
Refer to the derating chart.
19VDC or more/3mA or more
9.5VDC or less/1.5mA or less
Approx. 5.6k
(Configure the setting in the PLC
parameter dialog box.)
10ms is set by default.
(Configure the setting in the PLC
parameter dialog box.)
10ms is set by default.
32 points/common
(common terminal: B01, B02)
On indication (LED)
40-pin connector
(sold separately)
2
0.3mm
(A6CON1, A6CON4)
0.075A (typ. all points on)
98(H)27.4(W)90(D)mm
0.15kg
100
90
80
On
70
ratio
60
50
40
0 10 20
Ambient temperature
: Partially changed, : Incompatible
Precautions for replacement
ibility



The rated input current is
*1
reduced.


The on voltage/on current differ.
The off voltage/off current differ.
The input resistance is
*1
increased.

Set the input response time of
the parameter to 1ms.




Existing external wiring can be
used.


(QX41)
28.8VDC
30 40 50 55
*1
*1