คอนแทคเตอร์,เบรกเกอร์,อินเวอร์เตอร์พลังงานแสงอาทิตย์,มิเตอร์ไฟฟ้า,แบตเตอรี่พลังงานแสงอาทิตย์
Complete Technical Guide for Schneider SR2A201FU Compact Smart Relay
The Schneider SR2A201FU is a compact smart relay belonging to the Zelio Logic series. It integrates basic PLC functions with the advantages of relay control, and is suitable for logic control, remote management and monitoring of simple automation systems. The following is the complete technical parameters, functional features, application scenarios and model selection & replacement solutions.
- Core Product Overview
| Item | Parameter |
| Product Type | Compact Smart Relay |
| Series | Zelio Logic SR2 |
| I/O Configuration | 12 discrete inputs + 8 เอาท์พุทรีเลย์ (20 I/O points in total) |
| แรงดันไฟฟ้าของแหล่งจ่ายไฟ | 100~240V AC, 50/60Hz |
| Display Function | Equipped with LCD screen and navigation buttons |
| Clock Function | No built-in real-time clock |
| วิธีการติดตั้ง | 35mm standard DIN rail mounting |
| ระดับการป้องกัน | IP20 (front panel), IP40 (overall) |
| Operating Temperature | -20℃ ~ +55℃ |
| Storage Temperature | -40℃ ~ +70℃ |
| Warranty Period | 18 เดือน |
- Detailed Technical Parameters
(ฉัน) Input Characteristics
| Parameter | ข้อมูลจำเพาะ |
| Number of Input Points | 12 discrete input points |
| Input Type | กระแสตรง 24V (มาตรฐาน), compatible with NPN/PNP signals |
| Input Current | Approximately 7mA per point |
| Response Time | ≤10ms |
| Isolation Method | Photoelectric isolation, 2500วีและ |
(ครั้งที่สอง) Output Characteristics
| Parameter | ข้อมูลจำเพาะ |
| Number of Output Points | 8 relay output points |
| ประเภทการติดต่อ | เปิดตามปกติ (เลขที่), C-type contacts (ไม่จำเป็น) |
| จัดอันดับปัจจุบัน | Maximum 8A per point, for AC-1 category loads |
| แรงดันไฟฟ้าที่ได้รับการจัดอันดับ | Maximum 250V AC / 30V DC |
| Mechanical Service Life | ≥10 million operations |
| Electrical Service Life | ≥100,000 operations (at rated load) |
| การป้องกันไฟกระชาก | Built-in RC snubber circuit |
(III) Control Functions
| Function | ข้อมูลจำเพาะ |
| Programming Method | Ladder Diagram, supports 0~240 logic lines |
| Built-in Function Blocks | 16 timers, 16 counters, shift registers, comparators, ฯลฯ. |
| Memory | Built-in EEPROM flash memory, data retention up to 10 ปี |
| Communication Interface | Supports USB/Bluetooth communication expansion via SR2USB01 or SR2BTC01 module |
| Program Capacity | Can store multiple programs, supports program copying to other SR2 relays |
III. Core Functional Features
- Integrated Design: Integrates PLC logic control and relay output, meeting small-to-medium-sized control requirements without additional expansion modules.
- Easy Programming: Supports ladder diagram programming. On-site editing, monitoring and fault diagnosis can be performed via the built-in LCD screen and navigation buttons, eliminating the need for a dedicated programmer.
- Flexible Adaptability: Wide voltage power supply (100~240V AC) is compatible with power grids worldwide, and DC 24V input is compatible with industrial sensor signals.
- Reliable and Durable: Industrial-grade design with strong anti-electromagnetic interference capability, suitable for harsh industrial environments.
- Data Security: Built-in EEPROM memory ensures no program or data loss after power failure, with a backup cycle of up to 10 ปี.
- การเพิ่มประสิทธิภาพต้นทุน: Replaces traditional relay control cabinets, reduces wiring complexity, and lowers maintenance costs and potential fault points.
- สถานการณ์การใช้งานทั่วไป
- การควบคุมมอเตอร์: Start-stop, forward-reverse rotation, star-delta reduced-voltage starting and other self-locking and interlocking control for single/three-phase motors.
- Pump and Valve Systems: Logic control and protection for water supply and drainage, hydraulic and pneumatic systems.
- HVAC Control: Interlocking control of temperature/pressure/flow for fans, compressors and air conditioning systems.
- Lighting Management: Timed lighting, zoning control and energy-saving management for industrial plants and commercial buildings.
- Equipment Interlocking: Sequence control, counting, time delay and interlocking protection for simple processes in production lines.
- Remote Monitoring: Realize remote monitoring and control of equipment operating status through communication modules.
- Programming and Commissioning Methods
- On-site Programming: Directly perform logic editing, parameter setting and fault diagnosis via the built-in LCD screen and navigation buttons.
- Software Programming: Use the Zelio Soft dedicated programming software (including Discovery Package learning version), which supports ladder diagram editing, simulation and program upload/download.
- Communication Expansion:
SR2USB01: USB communication module, enabling high-speed data transmission between PC and relay.
SR2BTC01: Bluetooth communication module, supporting wireless programming and monitoring.
- Fault Diagnosis: The LCD screen displays real-time I/O status, timer/counter values and fault codes, facilitating quick problem location.
- Model Selection, Replacement and Cross-brand Alternatives
(ฉัน) Schneider Same-series Alternatives
| Model | Differences | สถานการณ์การใช้งาน |
| SR2A101FU | No LCD screen | Cost-sensitive fixed control scenarios that do not require on-site programming |
| SR2A201FW | With real-time clock | Applications requiring timing control and time recording |
| SR2B201FU | 8 inputs + 4 เอาท์พุทรีเลย์ | Scenarios with fewer I/O point requirements |
| SR2B201FW | 8 inputs + 4 เอาท์พุทรีเลย์ + clock | Simple timing control scenarios |
(ครั้งที่สอง) Cross-brand Alternative Solutions
| Brand | Model | Compatibility | Remarks |
| ชินท์ | NX-SR Series Smart Relays | ★★★☆☆ | Similar functions, I/O points need to be matched accordingly |
| Delixi | CDSR Series | ★★★☆☆ | Compatible with basic logic control functions |
| Omron | CP1E Series Micro PLC | ★★★★☆ | More abundant functions, programming software needs to be adapted |
| ซีเมนส์ | LOGO! Series | ★★★★☆ | Same type of compact smart relay with different communication protocols |
ปกเกล้าเจ้าอยู่หัว. Installation and Wiring Key Points
- Installation Location: Mount on 35mm standard DIN rail, reserve ≥50mm heat dissipation space, and avoid high temperature, humidity, dust and strong electromagnetic interference environments.
- การเดินสายไฟพาวเวอร์ซัพพลาย: Connect L/N to 100~240V AC power supply, and ensure the PE terminal is reliably grounded.
- Input Wiring:
Connect the common terminal (COM) to the negative pole of DC 24V.
Connect input points to the positive pole of sensor signals, with a response time ≤10ms.
- Output Wiring:
เทอร์มินัลทั่วไป (COM) of relay outputs can be connected to AC 220V or DC 24V power supply.
Maximum load of 8A per point; for inductive loads, a freewheeling diode (ดี.ซี) or RC snubber circuit (เครื่องปรับอากาศ) must be connected in parallel.
- Communication Wiring: Realize USB/Bluetooth communication through expansion modules, with communication cable length ≤5m.
8. Common Fault Troubleshooting
| Fault Phenomenon | Possible Causes | Troubleshooting Methods |
| Power indicator not lit | Poor power connection/abnormal voltage/damaged power module | Check power wiring and voltage, replace the power module |
| No input response | Abnormal input signal/wiring error/damaged input point | Measure input signal, check wiring, replace the input point |
| No output action | Damaged output point/load short circuit/logic error | Check load and wiring, simulate and test logic with Zelio Soft |
| Program loss | EEPROM fault/abnormal power failure | Check power stability, re-download the program |
| Communication failure | Poor connection of communication module/incorrect software settings | Check module connection, confirm communication parameter matching |
- Safety and Maintenance Suggestions
- Safe Operation: Programming and wiring must be performed under power-off conditions to avoid electric shock risks.
- การบำรุงรักษาตามปกติ:
Inspect wiring terminals for looseness and clean dust on the equipment surface every quarter.
Test I/O point response and relay contact reliability every year.
- Program Backup: Regularly back up programs via Zelio Soft software to prevent data loss.
- Spare Parts Reserve: It is recommended to reserve spare relays of the same model for critical applications to shorten fault downtime.
