Input Architecture and Signal Acquisition
This analog input module provides high-resolution measurement for up to four differential channels. It accepts 4–20 mA current and 0–10 VDC voltage signals directly. The module features a 16-bit ADC for accurate and stable data conversion. Each channel includes programmable gain and filtering for optimized performance. Consequently, this unit suits precision process measurement applications in Modicon systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Schneider Electric |
| Model Number | ASBADU214 |
| Input Channels | 4 differential analog inputs |
| Resolution | 16 bits |
| Signal Types | 4–20 mA, 0–10 VDC, 0–5 VDC |
| Input Impedance (Current) | 250 Ω |
| Input Impedance (Voltage) | >1 MΩ |
| Accuracy | ±0.05% of full scale at 25°C |
| Temperature Drift | ±50 ppm/°C maximum |
| Common Mode Rejection | >90 dB at 60 Hz |
| Normal Mode Rejection | >60 dB at 60 Hz |
| Conversion Time | 50 ms per channel |
| Channel Isolation | 1500 VAC to backplane |
| Current Draw | 150 mA from 5 VDC bus |
| Power Dissipation | 3.5 W maximum |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | –40°C to +85°C |
| Humidity | 5% to 95% non-condensing |
| Dimensions (H x W x D) | 85 mm x 25 mm x 110 mm |
| Weight | 0.20 kg |
| Termination Interface | Removable terminal block |
| Wire Gauge | 16–22 AWG |
| Status Indicators | Per-channel and power LEDs |
Signal Conditioning and Measurement Precision
The ASBADU214 uses a sigma-delta ADC for low-noise analog-to-digital conversion. It performs automatic calibration to maintain long-term measurement accuracy. Each input channel provides programmable filtering for noise attenuation. The module rejects 50/60 Hz interference effectively. This ensures stable readings in electrically noisy environments.
Field Wiring and Connection Details
A removable terminal block simplifies field wiring and module exchange. Each differential input requires positive, negative, and shield connections. Use twisted-pair cables for optimal noise rejection. Connect cable shields to the designated ground terminal.
Installation and Maintenance
Insert the module into any Modicon I/O slot. Secure with retaining clips. Wire the terminal block before insertion. Replace the module if accuracy drifts.
Details
| Weight | 0.2 kg |
|---|---|
| Dimensions | 85 × 25 × 110 mm |
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