Mitsubishi Electric AnyWire DB A20, Handbook

Page: 47 / 80

6
REPLACING THE I/O MODULES
6
- 14
(3) Comparisons between AJ55TB2-16R and A20PB-16RS
: Compatible, : Partially changed, ×: Not compatible
Specifications AJ55TB2-16R A20PB-16RS
Compat-
ibility
Precautions for
replacement
Number of output points 16 points 16 points
Insulation method
External output
↔
Internal circuit:
Photocoupler
Internal circuit ↔ Transmission circuit:
Not insulated
External output
↔
Internal circuit: Relay
Internal circuit ↔ Transmission circuit:
Photocoupler
The insulation method is
different.
Output type Contact output type Contact output type
Rated load voltage/current
24VDC 2A (resistance load)/point
240VAC 2A (COS

=1)/point
8A/common
30VDC 2A (resistance load)/point
220VAC 2A (COS

=1)/point
1A (induced load)/point
The rated load voltage and
current are different.
Minimum switching load 5VDC 1mA
0.1VDC 0.1mA
(reference value)
Check the specifications of the
load to be used.
Maximum switching voltage 250VAC 110VDC 250VAC 110VDC
Response
time OFF

ON 10ms or less 10ms or less
ON

OFF 12ms or less 10ms or less
Life
Mechanical 20 million times or more 20 million times or more
Electrical
Rated switching voltage/current load
100,000 times or more
200VAC 1.5A, 240VAC 1A
(COS

=0.7) 100,000 times or more
200VAC 1A, 240VAC 0.5A
(COS

=0.35) 100,000 times or more
24VDC 1A, 100VDC 0.1A
(L/R=7ms) 100,000 times or more
100,000 times or more
Maximum switching
frequency
3,600 times/hour 20 times/minute
Maximum switching frequency
is different.
Surge suppressor None None –
Common terminal
arrangement 8 points per common
(2-wire type terminal block)
All points independent
(2-wire type terminal block)
Because 8 points per common
is changed to all points
independent, the wiring is
different.
Operation indicator ON indication (LED) ON indication (LED)
External wiring method
40-point terminal block (M3 screw)
Transmission circuit included
40-point terminal block (M3 screw)
Transmission circuit included
Existing wires can be used but
applicable crimping terminals
are different.
For details, refer to Section 6.3.
Applicable wire size
0.75 to 2mm
2
0.3 to 1.25mm
2
(when the following applicable crimping
terminals are used: 0.75 to 2mm
2
)
Applicable crimping
terminal
1.25-3, 1.25-YS3A,
2-S3, 2-YS3A
V1.25-3, V1.25-YS3A,
V2-S3, V2-YS3A
For wire sizes 0.75 to 2mm
2
R2-3SL, RAV2-3SL, RAP2-3SL,
VD2-3S, VD2-3.5SS, VD2-3.5S,
VDAV2-3.5SS, VDAV2-3.5S
External
power
supply
Voltage
24VDC ± 10%
Ripple voltage 4Vp-p or less
– –
The A20PB-16RS external
power supply and the I/O
module power supply are
shared.
Current
90mA
(24VDC TYP. all points ON)
– –
I/O module
power
supply
Voltage 15.6 to 27.6VDC
21.6 to 27.6VDC
(ripple voltage 0.5Vp-p or less)
Operating voltage range is
different.
Current 85mA 165mA
Because the external power
supply and the I/O module
power supply are shared, the
consumed current is decreased.
External dimensions 50(H) × 177(W) × 66(D) mm 40(H) × 190(W) × 60(D) mm The shape is different.
Installation method
Screw mounted Screw mounted ×
Because mounting hole size is
different, reworking is required.
Mounted to DIN rail Mounted to DIN rail
The A20PB-16RS can be
mounted to the existing DIN rail.
Weight 0.4kg 0.28kg