Schneider Electric BMXART0814 Modicon X80 Analog Isolated Low‑Level Input Module — 8 Channels, ±40 mV/±80…±1.28 V, 15‑bit + sign, Isolated, IP20

The Schneider Electric BMXART0814 is an isolated low‑level analog input module for the Modicon X80 platform. It provides 8 isolated channels with high resolution and flexible input ranges suitable for precision low‑level voltage, RTD and thermocouple measurements in medium to large industrial process applications. The module features per‑channel diagnostics, firmware support and robust electrical isolation to integrate reliably with Modicon M340/M580 and X80 systems.

Key specifications

• Manufacturer: Schneider Electric
• Model: BMXART0814 (Modicon X80 analog input module)
• Function: 8‑channel isolated analog input — low‑level voltages, RTDs, thermocouples
• Input types supported:
  • Voltage: ±1.28 V, ±640 mV, ±320 mV, ±160 mV, ±80 mV, ±40 mV
  • Resistors: 400 Ω and 4000 Ω (2‑/3‑/4‑wire)
  • RTDs: Pt100, Pt1000, Ni100, Ni1000, Cu10 (various ranges)
  • Thermocouples: types B, N, U, J, L, E, K, T, R, S (wide ranges)
• Conversion & resolution:
  • ADC: Sigma‑Delta 16 bits
  • Nominal analogue input resolution: 15 bits + sign
  • Measurement resolution examples: 0.1 °C for RTDs/TCs; 40/80/160/320/640/1280 scaled mV resolution per input range
• Accuracy & error (selected):
  • ≤ 0.15 % of full scale for ±1.28 V, ±160 mV, ±320 mV, ±640 mV, ±80 mV at 0…60 °C
  • 0.05 % of full scale at 25 °C for the voltage ranges including ±40 mV
  • Temperature measurement errors and full tables (thermocouples/RTDs) per datasheet
• Filtering & rejection:
  • First‑order digital filtering
  • Common mode rejection: 120 dB (50/60 Hz)
  • Differential mode rejection: 60 dB (50/60 Hz)
• Isolation & wiring:
  • Channel‑to‑channel isolation provided
  • Electrical connection: 40‑way (2 connectors)
  • Maximum wiring resistance: specified per sensor type (examples: 20 Ω for 2/3‑wire RTDs; up to 500 Ω for 4‑wire Pt1000) — consult datasheet for full table
• Performance & reliability:
  • Nominal read cycle time: 200 ms (thermocouple), 400 ms (temperature probe)
  • MTBF: 900,000 hours
  • Current consumption: 150 mA at 3.3 V DC; 50 mA at 24 V DC
• Indicators & diagnostics:
  • LEDs: 1 × RUN (green), 1 × ERR (red), 1 × I/O (red), 1 LED per channel (green) for channel diagnostics
  • Recalibration: internal
  • Detection: open‑circuit detection for RTDs and thermocouples
• Mechanical & environmental:
  • Net weight: 0.165 kg
  • IP degree of protection: IP20
  • Operating ambient temperature: 0…60 °C
  • Storage temperature: −40…85 °C
  • Relative humidity: 5…95 % at 55 °C without condensation
  • Vibration / shock: 3 gn / 30 gn
  • Operating altitude: 0…2000 m (2000…5000 m with derating)
• Compliance & standards:
  • Certifications: CE, EAC, UL, CSA, RCM, Merchant Navy
  • Standards: IEC 61131‑2, IEC 61000‑6‑4, IEC 61000‑6‑2, EN 61010‑2‑201
• Firmware & documentation:
  • Latest firmware: Modicon X80 BMXART0814 Firmware ≤SV2.3 (SV2.3) — check Schneider Electric portal
  • Datasheet, user guide, instruction sheet and CAD available from Schneider Electric support portal
• Packaging & warranty:
  • Packaging units per Schneider Electric documentation
  • Contractual warranty: 18 months

Features & benefits

• High‑resolution 15‑bit + sign acquisition with sigma‑delta ADC for precise low‑level measurements.
• Wide selection of input ranges and sensor compatibility (voltage, RTD, thermocouples, resistive sensors) reduces need for external signal conditioning.
• Channel isolation and strong common‑mode rejection improve measurement integrity in noisy industrial environments.
• Per‑channel diagnostics and LEDs accelerate commissioning and troubleshooting.
• Native compatibility with Modicon X80, M340 and M580 reduces spare parts and simplifies system upgrades.

Installation and service notes

• Use the 40‑way connector wiring per Schneider Electric pinout; observe maximum wiring resistance limits for each sensor configuration.
• Configure input range and filtering as required in controller configuration tools; update firmware to the recommended version.
• Ensure module is mounted inside IP20 rated enclosure and observe ambient/altitude derating. Refer to official datasheet for wiring diagrams, channel configuration and detailed accuracy tables.