This MELSEC iQ-R Series input unit from MITSUBISHI ELECTRIC reads digital signals from sensors, switches and push buttons. Connector or terminal block versions offer different point counts and input types. High-speed input versions support fast signal detection. Sink and source types are available, so the unit can be matched to the sensor wiring standard used in the machine.
| Part No. |
Mass (kg) |
Unit Type |
View |
Connection Method |
Input Method |
No. of Inputs |
Protection Rating |
Response Time |
Current Consumption (mA) |
Insulation Type |
| QX40-S1 |
0.2 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 18-point terminal block (M3×6 screw) |
16 points 1 common |
16 |
IP2X |
0.1/0.2/0.4/0.6/1ms |
DC5V internal: 60 |
Photocoupler isolation |
| QX40-TS |
0.16 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 2-piece spring clamp terminal block |
16 points 1 common |
16 |
IP2X |
(Input) 1/5/10/20/70ms |
DC5V internal: 50 |
Photocoupler isolation |
| QX40H |
0.16 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 18-point terminal block (M3×6 screw) |
8 points 1 common |
16 |
IP2X |
0.1/0.2/0.4/0.6/1ms |
DC5V internal: 80 |
Photocoupler isolation |
| QX41-S1 |
0.15 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 40-pin connector |
32 points 1 common |
32 |
IP2X |
0.1/0.2/0.4/0.6/1ms |
DC5V internal: 75 |
Photocoupler isolation |
| QX41-S2 |
0.15 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 40-pin connector |
32 points 1 common |
32 |
IP2X |
1/5/10/20/70ms or less |
DC5V internal: 75 |
Photocoupler isolation |
| QX42-S1 |
0.18 |
Input unit |
Operation indication: ON indication (LED) (32-point switching display by SW) |
External wiring / 40-pin connector |
32 points 1 common |
64 |
IP2X |
0.1/0.2/0.4/0.6/1ms |
DC5V internal: 90 |
Photocoupler isolation |
| QX50 |
0.13 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 18-point terminal block (M3×6 screw) |
16 points 1 common |
16 |
IP2X |
20ms or less |
DC5V internal: 50 |
Photocoupler isolation |
| QX70 |
0.14 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 18-point terminal block (M3×6 screw) |
16 points 1 common |
16 |
IP2X |
1/5/10/20/70ms or less |
DC5V internal: 55 |
Photocoupler isolation |
| QX70H |
0.14 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 18-point terminal block (M3×6 screw) |
8 points 1 common |
16 |
IP2X |
0.1/0.2/0.4/0.6/1ms |
DC5V internal: 80 |
Photocoupler isolation |
| QX71 |
0.12 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 40-pin connector |
32 points 1 common |
32 |
IP2X |
1/5/10/20/70ms or less |
DC5V internal: 70 |
Photocoupler isolation |
| QX72 |
0.13 |
Input unit |
Operation indication: ON indication (LED) (32-point switching display by SW) |
External wiring / 40-pin connector |
32 points 1 common |
64 |
IP2X |
1/5/10/20/70ms or less |
DC5V internal: 85 |
Photocoupler isolation |
| QX80-TS |
0.16 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 2-piece spring clamp terminal block |
16 points 1 common |
16 |
IP2X |
1/5/10/20/70ms or less |
DC5V internal: 50 |
Photocoupler isolation |
| QX80H |
0.16 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 18-point terminal block (M3×6 screw) |
8 points 1 common |
16 |
IP2X |
0.1/0.2/0.4/0.6/1ms |
DC5V internal: 80 |
Photocoupler isolation |
| QX81 |
0.16 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 37-pin D-sub connector |
32 points 1 common |
32 |
IP2X |
1/5/10/20/70ms or less |
DC5V internal: 75 |
Photocoupler isolation |
| QX81-S2 |
0.16 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 37-pin D-sub connector |
32 points 1 common |
32 |
IP2X |
1/5/10/20/70ms or less |
DC5V internal: 75 |
Photocoupler isolation |
| QX82 |
0.18 |
Input unit |
Operation indication: ON indication (LED) (32-point switching display by SW) |
External wiring / 40-pin connector |
32 points 1 common |
64 |
IP2X |
1/5/10/20/70ms or less |
DC5V internal: 90 |
Photocoupler isolation |
| QX82-S1 |
0.18 |
Input unit |
Operation indication: ON indication (LED) (32-point switching display by SW) |
External wiring / 40-pin connector |
32 points 1 common |
64 |
IP2X |
0.1/0.2/0.4/0.6/1ms |
DC5V internal: 90 |
Photocoupler isolation |
| QX90H |
0.14 |
Input unit |
Operation indication: ON indication (LED) |
External wiring / 18-point terminal block (M3×6 screw) |
8 points 1 common |
16 |
IP2X |
0.1/0.2/0.4/0.6/1ms |
DC5V internal: 80 |
Photocoupler isolation |
Confirm number of points, input voltage, type and wiring method. Please confirm the full part number and options against the MITSUBISHI ELECTRIC catalog; contact us if you need help identifying the right model.
Mitsubishi Electric is a Japanese manufacturer of factory automation and low-voltage power distribution equipment, including MELSEC PLCs, servo systems, inverters, magnetic contactors and starters, circuit breakers and measuring instruments.