Mitsubishi QX80 MELSEC-Q Series 16‑Point DC Input Module 24V DC Source Type

Mitsubishi Electric MELSEC‑Q series DC input module with 16 digital input channels rated at 24 V DC, source (positive common) type. Each channel draws approx. 4 mA at rated voltage. Input response time is software‑configurable in PLC parameters (1/5/10/20/70 ms). Photocoupler isolation between input terminals and the PLC power supply enhances signal integrity and reduces electrical interference. 18‑point screw terminal block, 16‑point I/O allocation, DIN rail or panel mounting.

Applications:

• Digital signal acquisition from sensors, limit switches and pushbuttons

• Factory automation and process control input expansion

• Conveyor, packaging and material handling systems

• Machine control panel interfacing for MELSEC‑Q series PLCs

Technical Specifications:

Core Specifications

• Number of inputs: 16 (source type, positive common, 1 common for all 16 points)

• Rated input voltage: 24 V DC (+20% / –15%, ripple ≤ 5%)

• Rated input current: approx. 4 mA at 24 V DC

• Input impedance: approx. 5.6 kΩ

• ON voltage / current: ≥ 19 V DC / ≥ 3 mA

• OFF voltage / current: ≤ 11 V DC / ≤ 1.7 mA

• Input response time: configurable via PLC parameters (1/5/10/20/70 ms, default 10 ms)

• Isolation method: Photocoupler (between input terminals and PLC power)

• Withstand voltage: 560 V AC for 3 cycles (560 V rms for 1 min)

• Insulation resistance: ≥ 10 MΩ (insulation resistance tester)

• Noise immunity: 500 Vp‑p noise voltage, 1 µs width, 25‑60 Hz noise frequency; IEC 61000‑4‑4: 1 kV

• Protection rating: IP2X

Power Consumption & Physical Specifications

• Internal current consumption (5 V DC): 50 mA typical (all points ON)

• Occupied I/O points: 16 points (I/O assignment as 16‑point input module)

• Common terminal arrangement: 16 points / 1 common (common terminal: TB18)

• External connection: 18‑point screw terminal block (M3 screws)

• Applicable wire size: 0.3 to 0.75 mm²

• Applicable crimping terminal: R1.25‑3 (sleeved crimping terminals cannot be used)

• Operation indicator: LED per input point

• Dimensions (H × W × D): 98 mm × 27.4 mm × 90 mm

• Weight: approx. 0.16 kg

• Operating temperature: 0 °C … 55 °C

• Storage temperature: –20 °C … 75 °C

System Integration:

• This input module belongs to the Mitsubishi Electric MELSEC‑Q series.

• Connects to MELSEC‑Q series main base units (Q3□B, Q5□B, Q6□B, Q3DB) and extension base units via the Q series backplane bus.

• Input response time is set via PLC parameters in GX Works2 or GX Developer software.

• Compatible with Q series CPU modules (Q00J, Q00, Q01, Qn, QnH, QnPH, QnPRH, QnU series).

• For detailed wiring and configuration, refer to the MELSEC‑Q series User's Manual (Hardware Design, Maintenance and Inspection).

Related Products:

• QX40 – 16‑point DC input module (positive common, similar specifications, different terminal arrangement)

• QX41 – 32‑point DC input module (high‑density, 40‑pin connector)

• QY10 – 16‑point relay output module for output expansion

• R6DIN1 – DIN rail mounting adapter for Q series modules