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Schneider SR2A101FU
1. Product Overview
The SR2A101FU is a logic controller designed for field technicians and non-professionals. It integrates 10 digital I/O interfaces (input/output) and an LCD display, supporting offline programming and online operation. Users can directly download the programmed ladder logic program to the relay via the USB interface, without the need for complex PLC programming skills.
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2. Main Technical Specifications
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Parameter
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Specification
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|---|---|
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Power Supply Voltage
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AC 100-240V (Optional: 100-240V AC or 24V DC)
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|
Number of Input Points
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6 digital inputs (0.5A/12V DC)
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|
Number of Output Points
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4 relay outputs (4PDT, rated current 8A, rated voltage 250V AC / 250V DC)
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I/O Module
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10 I/O (6 inputs + 4 relay outputs)
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|
Display
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Built-in LCD display (for showing operation status and fault information)
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Clock Function
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None (no clock function)
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Communication Interface
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USB (for offline programming), RS485 (optional, supports Modbus RTU)
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Dimensions
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38mm × 45mm × 70mm
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Operating Temperature
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-10°C – 55°C
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Protection Level
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IP20
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Environmental Characteristics
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Complies with RoHS and REACH standards, with Green Premium™ environmental label
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3. Product Features
- Easy to Learn and Use: Adopts Ladder Logic programming language, offline programming via PC-based Zelio Soft software with a user-friendly interface.
- Compact Structure: DIN rail mounting, small size, space-saving.
- High Reliability: Uses relay contacts internally, suitable for switching control.
- Display and Fault Diagnosis: LCD display provides real-time feedback on input/output status, helping to quickly locate faults.
- Eco-Friendly Design: Packaging uses recycled cardboard, in line with Schneider’s sustainable development strategy.
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4. Structure and Composition
- CPU Module: The core control unit, responsible for executing the ladder logic program.
- Power Supply Module: Responsible for converting AC main power into the voltage required by the relay and internal circuits.
- I/O Interface: Used to connect on-site sensors (input) and actuators (output).
- Display Panel: Located on the front of the device, used to display operation data and error codes.
- Communication Port: USB interface for programming, RS485 port for on-site networking (optional configuration).
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5. Typical Application Areas
- HVAC: Such as controlling the on/off of fans, heaters, and coolers.
- Pumping Stations and Water Treatment: Controlling the start/stop of water pumps and liquid level alarms.
- Industrial Automation: Controlling the start and stop of conveyors, packaging machines, and mixers.
- Building Automation: Such as lighting control, electric curtain control, and access control systems.
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6. Installation and Maintenance Recommendations
Installation
- Power Requirements: Ensure the input voltage is within the range of 100-240V AC.
- Wiring: Pay attention to distinguishing the terminals of the input (IN) and output (OUT) ends; power must be cut off before wiring.
- DIN Rail: Use the attached fixing bracket to install the device on the DIN rail, ensuring it is firmly fixed.
Programming
- Create a ladder logic program using the PC-based Zelio Soft software.
- Download the program to the relay via the USB interface.
- After successful program download, the device will automatically run the program.
Maintenance
- Regular Inspection: Regularly check if the wiring terminals are loose, especially the wear of the relay contacts.
- Moisture and Dust Protection: Although the protection level is IP20, it is recommended to install a protective cover when used in a humid environment.
- Program Backup: Before replacing the device or upgrading the firmware, be sure to back up the current control program using the software.
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