Product Overview
The Schneider BMXART0814 captures low-level analog signals from thermocouples and RTDs for the Modicon M340 system. This input module provides high-precision measurement of temperature and other millivolt signals. Process control applications depend on this unit for accurate monitoring of thermal processes. The module’s galvanic isolation protects the PLC backplane from electrical noise.
Technical Specifications
This analog input module features eight channels with comprehensive isolation for each channel. The Schneider BMXART0814 supports multiple thermocouple types and RTD configurations. Its built-in cold junction compensation ensures accurate temperature readings. The module’s high resolution enables precise measurement of small signal variations.
| Parameter | Specification |
|---|---|
| Product Type | Analog Isolated Low-Level Input Module |
| Series Compatibility | Schneider Modicon M340 (BMX series) |
| Number of Inputs | 8 differential input channels |
| Input Types | Thermocouple (J, K, T, S, R, E, N, B); RTD (Pt100, Pt1000); mV signals |
| Resolution | 16-bit (including sign bit) |
| Accuracy | ±0.1% of full scale at 25°C |
| Temperature Drift | ±50 ppm/°C typical |
| Input Impedance | > 1 MΩ |
| Common Mode Rejection | 100 dB minimum at 50/60 Hz |
| Normal Mode Rejection | 60 dB at 50/60 Hz |
| Conversion Time | 200 ms per channel (fixed) |
| Cold Junction Compensation | Automatic (channel 9 reference) |
| Sensor Break Detection | Yes (per channel) |
| Electrical Isolation | 1,500 V AC (channel to channel) |
| Supply Voltage | 5 V DC from backplane; 24 V DC from external |
| Current Consumption (5V) | Maximum 0.30 A |
| Current Consumption (24V) | Maximum 0.05 A |
| Dimensions (W x H x D) | 40 mm x 130 mm x 140 mm |
| Weight | Approximately 0.35 kg |
| Connector Type | 20-pin terminal block (removable) |
| Energy Storage | None (no onboard battery) |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% RH (non-condensing) |
Input Signal Conditioning
The Schneider BMXART0814 converts thermocouple and RTD signals into digital temperature values. Its internal cold junction compensation reference (channel 9) measures ambient temperature automatically. The module linearizes thermocouple outputs using internal tables. This board also accepts millivolt signals from other low-level sensors.
Accuracy and Resolution
This module delivers 16-bit resolution for exceptional measurement precision. The Schneider BMXART0814 maintains accuracy over a wide temperature range. Its differential inputs reject common-mode noise from electrical interference. The module’s auto-zero function eliminates offset errors for reliable readings.
Diagnostic Functions
The Schneider BMXART0814 includes sensor break detection for each input channel. Its diagnostic routines monitor internal temperature and supply voltage levels. The module reports fault conditions to the CPU for alarm generation. These features ensure reliable process monitoring and reduce troubleshooting time.
Application Scenarios
Process engineers deploy this module for temperature monitoring in chemical reactors and furnaces. It also serves in HVAC systems and food processing equipment. The Schneider BMXART0814 provides precise low-level signal measurement for critical control loops.
Details
| Weight | 2.1 kg |
|---|---|
| Dimensions | 180 × 135 × 120 mm |
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