SCHNEIDER ASP890300
Schneider ASP-890300 is an intelligent signal processing unit (I/O processor) from the Schneider Electric Modicon product family. It is widely used in PLC systems for analog and digital signal acquisition, processing, and fieldbus communication. The following is a summary of its main technical specifications and application features to support quick understanding and product selection.
Key Technical Specifications (from the product page)
| Parameter | Description |
|---|---|
| Model | ASP-890300 |
| Input channels | 8 analog inputs (0–10 V / 4–20 mA selectable) + 4 digital inputs |
| Sampling accuracy | ±0.1% FS (full scale) |
| Power supply | 24 V DC (optional 48 V DC) |
| Operating temperature | –25 °C to +70 °C (up to +85 °C with protective enclosure) |
| Communication interfaces | • RS-485 (Modbus RTU) • Ethernet (TCP/IP) |
| Physical size | Compact design, suitable for control cabinets or wall-mounted field installation |
| Protection rating | Optional enclosure available, meeting IP20 to IP65 requirements |
| Compatibility | Compatible with Modicon PLC series (e.g. TSX, M340, Quantum), usable as a distributed I/O expansion module |
Functions and Advantages
Multi-signal acquisition
Supports simultaneous acquisition of 8 analog inputs and 4 digital inputs, meeting most front-end requirements for process control and machine vision.
Analog inputs support both 0–10 V and 4–20 mA industrial signal standards, allowing flexible connection to different sensors.
High-precision sampling
With a sampling accuracy of ±0.1% FS, the module ensures reliable measurement data, making it suitable for applications with high accuracy requirements.
Dual-bus communication
- RS-485 interface supports Modbus RTU, ensuring compatibility with traditional fieldbus systems.
- Ethernet (TCP/IP) provides high-speed network connectivity, enabling easy integration with upper-level systems such as SCADA, MES, or cloud platforms.
Wide operating temperature range
Standard operating range of –25 °C to +70 °C; with a protective enclosure, the unit can operate reliably in harsher environments, such as high-temperature industrial workshops.
Flexible power supply
Powered primarily by 24 V DC, with an optional 48 V DC supply, accommodating different site power configurations.
Compact structure
The compact form factor allows easy installation in control cabinets or wall-mounted field applications, saving space and reducing wiring complexity.
Typical Application Scenarios
- Process automation: Acquisition of temperature, pressure, flow, and other analog signals in industries such as chemical processing, oil & gas, and food & beverage.
- Machine vision and inspection: High-speed digital signal acquisition in combination with sensor arrays.
- Building and energy management: Monitoring current, voltage, and power parameters and transmitting data to energy management systems via Ethernet.
- Distributed I/O expansion: Used as a remote I/O expansion module in large PLC projects to improve system scalability and reliability.
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