Mitsubishi Electric MELSEC-Q Series - Page 101

3 REPLACEMENT OF I/O MODULE
3 - 48
(33)Specifications comparison between A1SX80-S1 (negative common) and QX80
: Compatible, : Partially changed, : Incompatible
*1 Check the specifications of the sensor or switches to be connected to the QX80.
*2 The following shows the derating chart.
Specifications A1SX80-S1 QX80
Compat-
ibility
Precautions for replacement
Number of input points 16 points 16 points 
Isolation method Photocoupler Photocoupler 
Rated input voltage 24VDC 24VDC 
Rated input current 7mA Approx. 4mA
The rated input current is
reduced.
*1
Operating voltage range
19.2 to 26.4VDC
(ripple ratio within 5%)
20.4 to 28.8VDC
(ripple ratio within 5%)
The operating voltage range
differs.
Maximum number of
simultaneous input points
Refer to the derating chart.
*2
Simultaneously on (100%) 
On voltage/on current 17VDC or more/5mA or more 19VDC or more/3mA or more
The on voltage/on current differ.
*1
Off voltage/off current 5VDC or less/1.7mA or less 11VDC or less/1.7mA or less
The off voltage differs.
*1
Input resistance Approx. 3.3k Approx. 5.6k
The input resistance is
increased.
*1
Response
time
Off  on
0.4ms
(24VDC)
1ms/5ms/10ms/20ms/70ms or less
(Configure
the setting in the PLC
parameter dialog box.
)
10ms is set by default.
The response time differs.
Set the time according to the
control.
On  off
0.5ms
(24VDC)
1ms/5ms/10ms/20ms/70ms or less
(Configure
the setting in the PLC
parameter dialog box.
)
10ms is set by default.
Common terminal
arrangement
16 points/common
(common terminal: TB9, TB18)
16 points/common
(common terminal: TB18)

Operation indication On indication (LED) On indication (LED) 
External connection
system
20-point terminal block connector
(M3.57 screws)
18-point terminal block
(M36 screws)

Wiring change is required.
Applicable wire size
0.75 to 1.25mm
2
Core: 0.3 to 0.75mm
2
(outside diameter: 2.8mm or less)

Applicable solderless
terminal
R1.25-3.5, R2-3.5,
RAV1.25-3.5, RAV2-3.5
R1.25-3
(Sleeved solderless terminal cannot
be used.)

Current consumption 0.05A (typ. all points on) 0.05A (typ. all points on) 
External dimensions 130(H)34.5(W)93.6(D)mm 98(H)27.4(W)90(D)mm Wiring space is narrower.
Weight 0.20kg 0.16kg
(A1SX80-S1)
On ratio (%)