製品紹介
The Schneider ADU 204 / AS-BADU-204 Analog Input Module is a high-precision input module designed for industrial automation systems that require accurate analog signal acquisition. Engineered to interface with various sensors, this module is particularly suited for PT100 resistance temperature detectors (RTDs) and millivolt input ranges, making it ideal for temperature and low-voltage measurement applications. With 12-bit resolution and robust filtering capabilities, the ADU 204 ensures dependable data collection for process control, monitoring, and advanced automation tasks.
Technical Specifications
| Parameter | Details |
|---|---|
| Product Type | Analog Input Module |
| モデル Number | ADU 204 / AS-BADU-204 |
| Input Channels | 4 isolated analog inputs |
| Signal Type | PT100 RTD and ±500 mV low-level voltage |
| Resolution | 12-bit |
| Input Range (RTD) | -200 °C to +600 °C (PT100 standard) |
| Input Range (Voltage) | ±500 mV |
| Accuracy | ±0.2% / full scale |
| Input Impedance | >1 MΩ for voltage measurement |
| Sensor Excitation | Constant current source for RTD measurements |
| Filtering | Programmable digital filtering to reduce noise |
| Power Supply | 5 V DC from system backplane |
| Power Consumption | Approx. 2.5 W |
| Isolation | Channel-to-backplane and channel-to-channel isolation |
| Diagnostics | LED indicators for channel status and fault detection |
| Configuration | S/tware configurable via Schneider programming tools |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | -25 °C to +70 °C |
| Relative Humidity | 5% to 95% non-condensing |
| Dimensions (H × W × D) | 250 × 32 × 150 mm |
| 重量 | 0.3 kg |
| Mounting | Standard rack or panel mounting |
| Certifications | CE, UL, CSA, RoHS compliant |
Applications
The ADU 204 module is widely used wherever precise analog measurement and temperature monitoring are required:
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Industrial Process Control: Accurate acquisition / temperature or millivolt signals from PT100 sensors in chemical, pharmaceutical, and food processing plants.
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Energy Management: Monitoring / thermal data in power generation and distribution facilities.
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Building Automation: Precise temperature input for HVAC and environmental control systems.
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Laboratory and R&D: Reliable measurement / low-voltage signals during product testing and research activities.
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Manufacturing Automation: Real-time monitoring / process conditions to ensure product quality and consistency.
Advantages
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High Accuracy and Resolution: 12-bit resolution ensures detailed signal capture for precise control and monitoring.
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Versatile Input Capability: サポートs both RTD temperature sensing and ±500 mV voltage signals.
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Robust Isolation: Channel-to-backplane and channel-to-channel isolation improve safety and reduce electrical noise.
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Programmable Filtering: Built-in digital filtering minimizes interference for stable readings.
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Compact and Rugged Design: Fits easily into Schneider automation racks and performs reliably in industrial environments.
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User-Friendly Configuration: S/tware-based setup simplifies integration with existing automation systems.
FAQ
-
Which sensor types are supported by the ADU 204 module?
It supports PT100 RTDs for temperature measurement and low-level ±500 mV voltage inputs. -
What is the resolution / the analog inputs?
The module provides a 12-bit resolution for precise signal acquisition. -
How is the module configured for different input types?
Configuration is performed through Schneider programming tools to select RTD or voltage mode per channel. -
Is channel-to-channel isolation available?
Yes, each analog input is isolated from other channels and from the backplane. -
What excitation method is used for PT100 sensors?
A stable constant current source is provided to ensure accurate RTD measurement. -
Can filtering be adjusted to reduce noise?
Yes, the digital filter parameters can be programmed to minimize signal interference. -
How can channel status be monitored?
Front-panel LEDs indicate normal operation, active input, and fault conditions. -
Does the module require external power for sensors?
No, it is powered entirely by the 5 V DC system backplane. -
What is the input impedance for millivolt measurements?
The input impedance exceeds 1 MΩ, ensuring minimal loading / the measured circuit. -
Is it possible to calibrate the module in the field?
Yes, field calibration can be performed using standard reference sources and Schneider configuration tools.
Related モデルs (Same Series/Family)
| モデル Number | 説明 | Key Feature |
|---|---|---|
| ADU 202 | Dual-channel Analog Input Module | Two isolated analog inputs |
| ADU 203 | Triple-channel Analog Input Module | Three-channel RTD and mV support |
| ADU 205 | Analog Input Module | Extended range ±1 V capability |
| ADU 206 | High-Resolution Analog Input Module | 16-bit resolution for precision applications |
| ADU 207 | Fast Scan Analog Input Module | High-speed sampling for dynamic processes |
| ADU 208 | Multi-Range Analog Input Module | Configurable voltage and current inputs |
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