Schneider Electric BMXART0814 Modicon X80 Analog Input Module

Configured for temperature, voltage, resistance, and thermocouple measurement in the Modicon X80 platform, the Schneider Electric BMXART0814 (BMXART0814 analog input module) provides eight isolated low-level analog input channels with 15 bits + sign resolution. It supports RTD, thermocouple, resistance, and voltage input ranges with external cold junction compensation by Pt100 probe.

Hardware Specifications

The module specifications identify eight isolated inputs, low-level input operation, 15 bits + sign resolution, and a 150 mA current consumption at 3.3 VDC. The environmental ratings and physical weight are specified as IP20, 0 to 60 deg C operating temperature, and 0.165 kg net weight.

I/O Density and Signal Conditioning

The BMXART0814 provides eight analog channels within a Modicon X80 module. The input circuitry accepts multiple low-level voltage ranges, resistance configurations, RTD types, and thermocouple types. Channel-to-channel isolation separates the individual input circuits. The module applies first-order digital filtering and provides common-mode rejection of 120 dB and differential-mode rejection of 60 dB at 50/60 Hz.

For temperature measurement, cold junction compensation is performed externally using a Pt100 probe. The specified measurement and temperature-drift values vary according to the selected sensor or input range. Internal recalibration and open-circuit detection are provided for the supported sensor types.

Frequently Asked Questions

Q: How many analog channels does the BMXART0814 provide?
A: It provides 8 analog input channels with channel-to-channel isolation.

Q: What power consumption is specified for the module?
A: The module consumes 150 mA at 3.3 VDC and 50 mA at 24 VDC.

Q: How is cold junction compensation implemented?
A: Cold junction compensation is external and uses a Pt100 probe.

Field Installation Guidelines

• Install the module in the compatible Modicon X80 rack and secure the module mechanically before connecting field wiring.
• Use the specified 40-way connector arrangement for electrical connections.
• Separate low-level analog and thermocouple wiring from high-current power and switching conductors where practical.
• Maintain correct sensor wiring configuration for 2-wire, 3-wire, or 4-wire resistance and RTD measurements.
• Apply shield termination according to the installation grounding scheme and avoid creating unintended ground loops.
• For thermocouple channels, use the appropriate thermocouple wiring and verify the external Pt100 connection required for cold junction compensation.
• Confirm the selected input range and sensor type before commissioning each channel.
• Observe the IP20 enclosure limitation and install the module inside an enclosure providing the required environmental protection.
• Keep ambient operating temperature within 0 to 60 deg C and account for altitude derating above 2000 m.