Mitsubishi Electric MELSEC-Q Series

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3 REPLACEMENT OF I/O MODULE

3 - 5

Input module

A1SX42-S1 QX42-S1

1) External wiring: not changed

2) Number of slots: not changed

3) Program

Number of occupied I/O points: not changed

4) Specifications

Rated input voltage: not changed

Rated input current: changed (Approx.5mA Approx.4mA)

On voltage/on current: changed

Off voltage/off current: changed

Input resistance: changed

5) Function: not changed

A1SX42-S2

QX42

1) External wiring: not changed

2) Number of slots: not changed

3) Program

Number of occupied I/O points: not changed

4) Specifications

Rated input voltage: not changed

Rated input current: changed (Approx.5mA Approx.4mA)

On voltage/on current: changed

Off voltage/off current: changed

Input resistance: changed

5) Function: not changed

QX41-S2

1) External wiring: not changed

2) Number of slots: changed (2 modules are required.)

3) Program

Number of occupied I/O points: not changed

(64 points =32 points  2 modules)

4) Specifications

Rated input voltage: not changed

Rated input current: changed (Approx.5mA Approx.6mA)

On voltage/on current: changed

Off voltage/off current: changed

Input resistance: changed

5) Function: not changed

A1SX71 (24VDC,

positive common)

QX41

1) External wiring: not changed

2) Number of slots: not changed

3) Program

Number of occupied I/O points: not changed

4) Specifications

Rated input voltage: not changed

Rated input current: changed (Approx.7mA Approx.4mA)

On voltage/on current: changed

Off voltage/off current: changed

Input resistance: changed

5) Function: not changed

QX41-S2

1) External wiring: not changed

2) Number of slots: not changed

3) Program

Number of occupied I/O points: not changed

4) Specifications

Rated input voltage: not changed

Rated input current: changed (Approx.7mA Approx.6mA)

On voltage/on current: changed

Off voltage/off current: changed

Input resistance: changed

5) Function: not changed

AnS/QnAS series model Q series alternative model

Product Model Model Remarks (restrictions)

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Mitsubishi Electric MELSEC-Q Series - Page 58

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