Mitsubishi Electric MELSEC-I/OLINK Handbook page 46

6
REPLACING THE I/O MODULES
(2) Comparisons between AJ55TB2-8R and A20PB-08RS
Specifications
Number of output points
External output ↔ Internal circuit:
Insulation method
Internal circuit ↔ Transmission circuit:
Output type
24VDC 2A (resistance load)/point
Rated load voltage/current 240VAC 2A (COS=1)/point
Minimum switching load
Maximum switching voltage
OFF  ON
Response
time
ON  OFF
Mechanical
Rated switching voltage/current load
200VAC 1.5A, 240VAC 1A
Life
(COS=0.7) 100,000 times or more
Electrical
200VAC 1A, 240VAC 0.5A
(COS=0.35) 100,000 times or more
(L/R=7ms) 100,000 times or more
Maximum switching
frequency
Surge suppressor
Common terminal
arrangement (2-wire type terminal block)
Operation indicator
24-point terminal block (M3 screw)
External wiring method
Transmission circuit included
Applicable wire size
Applicable crimping
terminal
Voltage
External
Ripple voltage 4Vp-p or less
power
supply
Current
(24VDC TYP. all points ON)
Voltage
I/O module
power
supply Current
External dimensions 50(H) × 114(W) × 66(D) mm
Installation method
Weight
6
- 13
AJ55TB2-8R
8 points
External output ↔ Internal circuit: Relay
Photocoupler
Not insulated
Contact output type
8A/common
5VDC 1mA
250VAC 110VDC
10ms or less
12ms or less
20 million times or more
100,000 times or more
24VDC 1A, 100VDC 0.1A
3,600 times/hour
None
8 points per common
ON indication (LED)
2
0.75 to 2mm
1.25-3, 1.25-YS3A,
2-S3, 2-YS3A
V1.25-3, V1.25-YS3A,
V2-S3, V2-YS3A
24VDC ± 10%
45mA
15.6 to 27.6VDC
65mA
Screw mounted
Mounted to DIN rail
0.3kg
: Compatible,
A20PB-08RS
8 points
Internal circuit ↔ Transmission circuit:
Photocoupler
Contact output type
30VDC 2A (resistance load)/point
220VAC 2A (COS=1)/point
1A (induced load)/point
0.1VDC 0.1mA
(reference value)
250VAC 110VDC
10ms or less
10ms or less
20 million times or more
100,000 times or more
20 times/minute
None
All points independent
(2-wire type terminal block)
ON indication (LED)
30-point terminal block (M3 screw)
Transmission circuit included
2
0.3 to 1.25mm
(when the following applicable crimping
2
terminals are used: 0.75 to 2mm )
2
For wire sizes 0.75 to 2mm
R2-3SL, RAV2-3SL, RAP2-3SL,
VD2-3S, VD2-3.5SS, VD2-3.5S,
VDAV2-3.5SS, VDAV2-3.5S
–
–
21.6 to 27.6VDC
(ripple voltage 0.5Vp-p or less)
104mA
40(H) × 140(W) × 60(D) mm
Screw mounted
Mounted to DIN rail
0.2kg
: Partially changed, ×: Not compatible
Compat- Precautions for
ibility replacement
The insulation method is
different.
The rated load voltage and
current are different.
Check the specifications of the
load to be used.
Maximum switching frequency
is different.
–
Because 8 points per common
is changed to all points
independent, the wiring is
different.
Wiring must be changed.
Existing wires can be used but
applicable crimping terminals
are different.
For details, refer to Section 6.3.
The A20PB-08RS external
–
power supply and the I/O
module power supply are
–
shared.
Operating voltage range is
different.
Because the external power
supply and the I/O module
power supply are shared, the
consumed current is decreased.
The shape is different.
Because mounting hole size is
×
different, reworking is required.
The A20PB-08RS can be
mounted to the existing DIN rail.