The Original New Mitsubishi FX5-8AD is an 8-channel multi-input analog input module for the MELSEC iQ-F series, designed to handle a versatile mix of analog signals including voltage, current, thermocouple, and RTD temperature sensors. With a single module covering 8 analog inputs across multiple signal types, it simplifies system design by reducing the need for separate dedicated modules. The module features a wide input range, high-resolution 1/32000 conversion, and a spring clamp terminal block for tool-free wiring. It is an ideal solution for machine automation, process control, and temperature monitoring applications requiring flexible and precise analog signal acquisition. Core Engineering Highlights:8 analog input channels (voltage, current, thermocouple, RTD) | 1/32000 conversion resolution (16-bit signed binary) | Voltage inputs: 0–10V, 0–5V, 1–5V, -10 to +10V | Current inputs: 0–20mA, 4–20mA, -20 to +20mA | Thermocouple types: K, J, T, B, R, S | RTD types: Pt100, Ni100 | Conversion speed: 1 ms/channel (voltage/current), 40 ms/channel (thermocouple/RTD) | Spring clamp terminal block | 8 occupied I/O points | 24V DC external power supply | 0°C to +55°C operating temperature | Approx. 0.3 kg weight Key Features: Original New Mitsubishi FX5-8AD module 8 analog input channels, each configurable for voltage, current, thermocouple, or RTD Voltage/Current input ranges: 0–10V, 0–5V, 1–5V, -10 to +10V, 0–20mA, 4–20mA, -20 to +20mA Thermocouple types: K, J, T, B, R, S RTD types: Pt100, Ni100 1/32000 high-resolution conversion (16-bit signed binary, -32000 to +32000) Fast conversion speed: 1 ms per channel for voltage/current, 40 ms per channel for thermocouple/RTD Spring clamp terminal block for tool-free wiring Photocoupler isolation between input terminals and PLC (non-isolated between channels) Occupies 8 I/O points on the PLC Direct connection to FX5U, FX5UC, FX5UJ, and FX5S CPU modules External 24V DC power supply required for operation LED indicators for module status DIN rail mounting for space-efficient installation Applications: Multi-channel temperature monitoring with thermocouples or RTDs Process variable acquisition from 4–20mA transmitters (pressure, flow, level) Voltage and current signal monitoring in industrial automation Machine automation and data acquisition Packaging machinery and material handling systems OEM equipment requiring mixed analog input types Factory automation and process control systems Legacy FX2N-8AD system upgrades Technical Specifications: Attribute Specification Catalog Number FX5-8AD Product Family MELSEC iQ-F Series Type Analog Input (with Thermocouple/RTD capability) Number of Analog Inputs 8 channels Occupied I/O Points on PLC 8 points Supply Voltage 24V DC Current Type DC Input Voltage Range -10 to +10V, 0–10V, 0–5V, 1–5V Input Current Range -20 to +20mA, 0–20mA, 4–20mA Digital Output Value 16-bit signed binary (-32000 to +32000) Resolution (Voltage/Current) 312.5 µV (0–10V), 156.25 µV (0–5V), 125 µV (1–5V), 625 nA (0–20mA), 500 nA (4–20mA) Thermocouple Types K, J, T, B, R, S RTD Types Pt100, Ni100 Temperature Measuring Range (Thermocouple) K: -200 to +1200°C; J: -40 to +750°C; T: -200 to +350°C; B: 600 to 1700°C; R: 0 to 1600°C; S: 0 to 1600°C Conversion Speed (Voltage/Current) 1 ms/channel Conversion Speed (Thermocouple/RTD) 40 ms/channel Accuracy (Voltage/Current) ±0.3% of full scale at 25±5°C; ±0.5% at -20 to 55°C Accuracy (Thermocouple) ±1.2 to ±3.5°C (depending on type and range) Accuracy (RTD) ±0.4 to ±0.8°C Isolation Method Photocoupler between input terminals and PLC; non-isolated between input terminals and channels External Power Supply Voltage 24V DC (+20%, -15%) External Power Supply Current 110 mA (at 24V DC, all points ON) Internal Power Consumption 5V DC, 110 mA Allowable Instantaneous Power Failure Time Within 5 ms Connection Type Spring clamp terminal block Mounting DIN Rail (35 mm) Protection Rating IP20 Dimensions (W × H × D) 50 × 90 × 83 mm Weight Approx. 0.3 kg (0.331 kg gross) Operating Temperature 0°C to +55°C Storage Temperature -20°C to +70°C Certifications CE, UL/cUL, EAC, RoHS Shipping Approvals ABS, BV, DNV GL, LR, NK, RINA Country of Origin JP (Japan) European Order Code 312297 International Order Code 09U420 Predecessor FX2N-8AD (129195) Product Status Standard / Active System Compatibility: Compatible with Mitsubishi MELSEC iQ-F series CPU modules: FX5U CPU module: Ver. 1.050 or later FX5UC CPU module: Ver. 1.050 or later (FX5-CNV-IFC or FX5-C1PS-5V required for connection) FX5UJ CPU module: From first production FX5S CPU module: From first production Configured via GX Works3 engineering software Connects to the right side of the CPU module via extension cable Part of the MELSEC iQ-F series I/O system architecture Related Products: FX5-4AD – 4-channel analog input module (voltage/current) FX5-4DA – 4-channel analog output module (voltage/current) FX5-4AD-PT-ADP – 4-channel Pt100 temperature input adapter FX5-4AD-TC-ADP – 4-channel thermocouple input adapter FX5-CNV-IFC – Conversion adapter for FX5UC CPU connection FX5-8AD – 8-channel multi-input analog module (current model) GX Works3 – Engineering software for configuration and programming PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Mitsubishi and MELSEC are trademarks of Mitsubishi Electric Corporation.
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