Mitsubishi Electric MELSEC-Q Series - Page 133

3 REPLACEMENT OF I/O MODULE
3 - 80
(16)Specifications comparison between A1SY68A and QY68A
: Compatible, : Partially changed, : Incompatible
Specifications A1SY68A QY68A
Compat-
ibility
Precautions for replacement
Number of output points
8 points
(16 points occupied)
8 points
(16 points occupied)

Isolation method Photocoupler Photocoupler 
Rated load voltage 5/12/24/48VDC 5-24VDC 48VDC is not applicable.
Operating load voltage
range
4.5 to 52.8VDC 4.5 to 28.8VDC
Voltage exceeding 28.8VDC is
not applicable.
Maximum load current 2A/point 2A/point, 8A/module
The load current must be 8A or
less within a module.
Maximum inrush current 8A 10ms or less 8A 10ms or less 
Leakage current at off 0.1mA or less 0.1mA or less 
Maximum voltage drop at
on
0.4VDC (MAX.) 2A 0.3VDC (MAX.) 2A 
Response
time
Off  on 3ms or less 3ms or less 
On  off 10ms or less (resistance load) 10ms or less (resistance load) 
Surge suppressor Zener diode Zener diode 
Common terminal
arrangement
All points independent common All points independent common 
Operation indication On indication (LED) On indication (LED) 
Fuse None None -
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 0.11A (typ. all points on) 0.11A (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 0.14kg