Mitsubishi Electric AnyWire DB A20, Handbook

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6
REPLACING THE I/O MODULES
6
- 19
*1 For the negative common type, use the A20SB-04US.
*2 Check the specifications of the sensors or switches to be connected to the A20SB-04U.
Specifications
AJ55TB32-4DR
output specifications
A20PB-04RS output specifications
Compat-
ibility
Precautions for
replacement
Number of output points 2 points 4 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
4A/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 2 points per common
(2-wire type terminal block)
All points independent
(2-wire type terminal block)
Because 2 points per common
is changed to all points
independent, the wiring is
different.