Mitsubishi Electric MELSEC-Q Series - Page 135

3 REPLACEMENT OF I/O MODULE
3 - 82
(18)Specifications comparison between A1SY80 and QY80
: Compatible, : Partially changed, : Incompatible
Specifications A1SY80 QY80
Compat-
ibility
Precautions for replacement
Number of output points 16 points 16 points 
Isolation method Photocoupler Photocoupler 
Rated load voltage 12/24VDC 12/24VDC 
Operating load voltage
range
10.2 to 30VDC
(peak voltage 30VDC)
10.2 to 28.8VDC
Voltage exceeding 28.8VDC is
not applicable.
Maximum load current 0.8A/point, 3.2A/common 0.5A/point, 4A/common
Carefully select load for use
since the maximum load current
per point is lowered.
Maximum inrush current 8A 10ms or less 4A 10ms or less
Carefully select a load for use
since the minimum load current
is increased.
Leakage current at off 0.1mA or less 0.1mA or less 
Maximum voltage drop at
on
1.5VDC (MAX.) 0.8A
0.2VDC (typ.) 0.5A
0.3VDC (MAX.) 0.5A

Response
time
Off  on 2ms or less 1ms or less 
On  off
2ms or less
(resistance load)
1ms or less
(rated load, resistance load)

Surge suppressor Zener diode Zener diode 
Common terminal
arrangement
8 points/common
(common terminal: TB9, TB19)
16 points/common
(common terminal: TB17)
As the common is changed from
2 commons to 1 common, wiring
with a different voltage for each
common is not possible.
Operation indication On indication (LED) On indication (LED) 
Fuse rating
(breaking capacity)
5A
(1 fuse/common)
Cannot be changed.
(breaking capacity: 50A)
6.7A
Cannot be changed.
(breaking capacity: 50A)

Fuse blown indication
Available
(LED turns on when a fuse is blown
and a signal is output to the CPU
module.)
Available
(LED turns on when a fuse is blown
and a signal is output to the CPU
module.)

External
power
supply
Voltage
12/24VDC
(10.2 to 30VDC)
12/24VDC
(10.2 to 28.8VDC)
(ripple ratio within 5%)
Voltage exceeding 28.8VDC is
not applicable.
Current
20mA
(typ. 24VDC for each common)
20mA (24VDC) 
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 0.12A (typ. all points on) 0.08A (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 0.17kg