Schneider Electric BMXART0814H Modicon X80 Analog Input Module

Configured for multi-range temperature and low-level analog measurement in the Modicon X80 platform, the Schneider Electric BMXART0814H (BMXART0814H Analog Input Module) provides eight isolated analog input channels with 15 bits + sign resolution. The module supports RTD, thermocouple, resistance, and low-level voltage inputs through a 40-way electrical connection.

Hardware Specifications

PLC Backplane and Analog Signal Characteristics

The BMXART0814H is an X80 analog input module with eight isolated channels. Its input circuitry accepts low-level voltage signals, resistance measurements, RTD sensors, and thermocouples. The sigma-delta converter provides 16-bit internal conversion, while the specified analog input resolution is 15 bits + sign.

For temperature measurement, the module supports multiple IEC and UL/JIS sensor configurations. External Pt100 cold junction compensation is specified for thermocouple measurement. Open-circuit detection is provided for supported RTD and thermocouple inputs.

The module provides 120 dB common-mode rejection and 60 dB differential-mode rejection at 50/60 Hz. These characteristics apply to the analog signal acquisition path and should be considered when routing sensor wiring near power conductors or switching equipment.

Frequently Asked Questions

Q: What sensor types can the BMXART0814H accept?
A: It supports Cu 10, Ni 100, Ni 1000, Pt 100, Pt 1000, thermocouples B/E/J/K/L/N/R/S/T/U, 400 Ohm and 4000 Ohm resistance inputs, and low-level voltage ranges from +/- 40 mV to +/- 1.28 V.

Q: How is thermocouple cold junction compensation implemented?
A: Cold junction compensation is specified as external compensation using a Pt100 probe.

Q: Does the module provide channel isolation and diagnostics?
A: Yes. The inputs are isolated between channels, and the front diagnostics include a RUN LED, one diagnostic LED per channel, ERR, and I/O indicators.

Field Installation Guidelines

Install the BMXART0814H on the applicable Modicon X80 rack and establish the electrical connection through the specified 40-way connector arrangement.

Route thermocouple and RTD wiring separately from high-current and switching circuits where practical. Maintain appropriate shielding and grounding practices for low-level analog signals. Avoid creating unintended ground loops between sensor circuits, shields, and cabinet grounding points.

Verify the selected input type and measurement range in the PAC configuration before connecting field sensors. For RTD measurements, select the correct 2-wire, 3-wire, or 4-wire configuration and remain within the specified wiring resistance limit.

For thermocouple channels, verify the configured thermocouple type and the external Pt100 cold junction compensation arrangement. Confirm sensor polarity before commissioning.

The conformal-coated BMXART0814H is specified for operation from -25 to 70 deg C and IP20 protection. The enclosure and cabinet installation should provide the required environmental protection because IP20 does not provide protection against water or dust ingress.