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Mitsubishi Electric Artisan MELSEC-Q Series Manual Page 120

General-purpose programmable controllers, large/small.
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5.2 Replace DC input modules with 6 mA rated input current (QX41-S2, QX81-S2)
(2) Specification comparison
(1) Specification comparison of QX41-S2 input module (positive common (sink) type)
Item
QX41-S2
Number of input points
Rated input voltage
24 V DC
Approx. 6 mA
Rated input
current
12 V DC
Input resistance
Approx. 3.6 kΩ
Common terminal
arrangement
External connection
method
(2) Specification comparison of QX81-S2 input module (negative common (source) type)
Item
QX81-S2
Number of input points
Rated input voltage
24 V DC
Approx. 6 mA
Rated input
current
12 V DC
Input resistance
Approx. 3.6 kΩ
Common terminal
arrangement
External connection
method
Tip
• The pin arrangement of the A Series connector type DC input module is the same as the Q Series. Since the
current module connector's wiring can be used, the replacement can be completed just by switching the
modules.
Note that when using negative common (source) type modules, the A Series DC input module and the
connector are reversed. However, connectors of the existing module can be utilized.
• QX41-S2 and QX81-S2 can also be used when Q large type base unit is used in combination with the
upgrade tool manufactured by Mitsubishi Electric Engineering Co., Ltd. to connect the existing input module
AX41/AX81's terminal block with the external wiring.
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Q Series
QX41
32
32
20.4 to 28.8 V DC
Approx. 4 mA
(N/A)
(N/A)
Approx. 5.6 kΩ
32 points / common
40 pin connector
(With solder)
Q Series
QX81
32
32
20.4 to 28.8 V DC
Approx. 4 mA
(N/A)
(N/A)
Approx. 5.6 kΩ
32 points / common
37 pin
D-sub connector
117
A (Large Type) Series
AX41
32
10.2 to 26.4 V DC
Approx. 10 mA
Approx. 7 mA
Approx. 4 mA
Approx. 3 mA
Approx. 2.4 kΩ
Approx. 3.4 kΩ
8 points / common
32 points / common 32 points / common
38-point
40 pin connector
terminal block connector
(With solder) × 2
(M3 × 6 screws)
A (Large Type) Series
AX81
32
10.2 to 26.4 V DC
Approx. 10 mA
Approx. 7 mA
Approx. 4 mA
Approx. 3 mA
Approx. 2.4 kΩ
Approx. 3.4 kΩ
8 points / common
32 points / common
38-point
terminal block connector
D-sub connector × 2
(M3 × 6 screws)
A (Small Type) Series
AX42
A1SX41
64
32
10.2 to 26.4 V DC
Approx. 7 mA
Approx. 3 mA
Approx. 3.3 kΩ
40 pin connector
(With solder)
A (Small Type) Series
AX82
A1SX81
64
32
10.2 to 26.4 V DC
Approx. 7 mA
Approx. 3 mA
Approx. 3.3 kΩ
32 points / common
37 pin
37 pin
D-sub connector

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