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Schneider SR2A201BD is a compact smart relay (programmable logic controller) from the Zelio Logic SR2 series, used for the management, controle remoto, and monitoring of simple automation systems. It is an upgraded replacement for the SR1‑A201BD, offering enhanced functions. Suitable for industrial and commercial applications, it is an ideal alternative to traditional relay logic control and dedicated control cards.
- Resumo dos parâmetros principais
| Categoria de parâmetro | Especificações detalhadas |
| Informações básicas | • Type: Compact smart relay |
| • Series: Zelio Logic SR2 | |
| • Model: SR2A201BD | |
| • Supply voltage: 24 CCV | |
| • Mostrar: With LCD (no clock function) | |
| • Programming software: Zelio Soft 2 | |
| Configuração de E/S | • Total I/O points: 20 |
| • Digital inputs: 12 (EN/IEC 61131‑2 type 1) | |
| • Analog inputs: 2 (tipo universal) | |
| • Digital outputs: 8 (saída de relé) | |
| • Output form: 4 contatos de mudança (4PDT‑NO, NC) | |
| Características Elétricas | • Input current: máx.. 4 mA |
| • Counting frequency: 1 kHz (discrete inputs) | |
| • Relay output rating: ≥10 mA @ 12V; 1.5UM (CA‑12), 0.9UM (CA‑15) at 230V rated | |
| • Mechanical life: 10,000,000 ciclos (saída de relé) | |
| • Electrical life: 500,000 ciclos | |
| • Power consumption: 6 C (without extension modules) | |
| • Reverse polarity protection: Sim | |
| Desempenho | • Program capacity: Ladder ≤120 lines, FBD ≤200 lines |
| • Cycle time: 6–90 ms | |
| • Backup time: 10 anos (a 25°C) | |
| • Clock drift: 6 s/month (25°C), 12 min/year (0–55°C) | |
| • Impulse withstand voltage: 4 kV (EN/IEC 60947‑1) | |
| Condições ambientais | • Temperatura operacional: -20°C ~ 55 °C |
| • Protection rating: IP20 (frente) | |
| • Montagem: Trilho DIN |
- Dimensões & Physical Features
Dimensões: Standard DIN‑rail mount, width approx. 70 milímetros, height approx. 90 milímetros, depth approx. 60 milímetros (subject to official data)
Peso: aprox.. 0.38 kg
Terminais: Screw‑clamp terminals, reliable connection, fácil manutenção
Mounting recommendation: 15 mm standard galvanized steel DIN rail (por exemplo, Schneider AM1DE200)
- Substituição & Compatibilidade
- Substituição direta: SR1‑A201BD (descontinuado)
- Same‑series replacements / upgrades:
SR2A201FU: 24CCV, 20E/S, with display, no clock (functionally identical, minor differences possible)
SR2A201E: 24CCV, 20E/S, sem exibição, no clock
SR2B201BD: 24CCV, 20E/S, with display, with real‑time clock
- Cross‑series compatibility: Can be used with SR3 series extension modules to expand I/O and functions.
- Acessórios recomendados
| Tipo de acessório | Modelo | Descrição |
| Programming cable | SR2‑USB01 | USB programming cable (3 eu), connects PC to smart relay |
| Software de programação | Zelio Soft 2 | Official software, supports Ladder (LD) and FBD |
| Extension modules | SR3XT series | Expand I/O: digital, analógico, comunicação |
| Mounting accessory | 15 mm trilho DIN | Standard mounting rail, Schneider AM1DE200 recommended |
| Proteção | Capa protetora contra poeira | Protects front interface and display |
- Aplicativos
Automação industrial: Pequenas linhas de produção, manuseio de materiais, máquinas de embalagem
Edifícios comerciais: Controle de iluminação, Controle de climatização, controle de acesso
Infraestrutura: Controle da bomba, compressor management, wastewater treatment
Outros: Máquinas de venda automática, lift control, agricultural automation
- Programação & Solução de problemas
Programming Features
Supports Ladder Diagram (LD) and Function Block Diagram (DCT) per IEC 61131‑3
Built‑in EEPROM: program and data retained for 10 years after power loss
Program memory self‑test on power‑up
Falhas Comuns
- Falha de energia: Check 24VDC supply and polarity (reverse protected)
- Input not responding: Verify signal type/voltage, verifique a fiação
- Output not operating: Check load within rating, inspect output contacts
- Program lost: Reload via Zelio Soft 2, check backup battery (if fitted)
- Exibição anormal: Power cycle, check ambient temperature
- Notas de seleção
- Confirm supply voltage 24VDC matches field power
- E/S: 12 entradas / 8 saídas (incluindo 2 analógico)
- Tipo de saída: Relay output suitable for AC/DC loads; observe current limits
- Mostrar: LCD aids on‑site commissioning and diagnostics
- Relógio: No clock on this model; choose SR2B201BD for timing functions
Complete Guide to Schneider SR2A201BD Replacements
- Core Replacement Overview
Schneider SR2A201BD is a compact Zelio Logic SR2 smart relay. Below is a complete list of replacements sorted by type and functional differences for quick selection.
- Detailed Replacement List
- Substituição Direta (Identical Function)
| Modelo | Especificações principais | Difference from SR2A201BD |
| SR2A201FU | 24CCV, 20E/S (12DI+2AI+8RO), LCD, no clock | Fully interchangeable, only batch/process differences |
| SR1‑A201BD | 24CCV, 20E/S, with display, no clock | Predecessor, descontinuado; SR2A201BD is official upgrade |
- Same‑Series Functional Replacements
| Modelo | Especificações principais | Aplicativo |
| SR2B201BD | 24CCV, 20E/S, LCD, with RTC | For timing / time control |
| SR2D201BD | 24CCV, 20E/S, no LCD, no clock | Cost‑optimized, no local display |
| SR2E201BD | 24CCV, 20E/S (12DI+6AI+8RO), LCD, no clock | For more analog inputs (6 IA) |
| SR2A201E | 24CCV, 20E/S, sem exibição, no clock | Basic low‑cost version |
- Tensão / Output Type Replacements
| Modelo | Especificações principais | Aplicativo |
| SR2A201BD‑AC | 100–240VAC, 20E/S, display, no clock | For AC mains supply |
| SR2A201BD‑DO | 24CCV, 20E/S (12DI+2AI+8DO transistor) | For DC loads, higher switching frequency |
- Upgrade Replacements (Expanded Functions)
| Modelo | Série | Principais melhorias | Aplicativo |
| SR3B261BD | SR3 (modular) | 26I/O base, expandable to 40I/O, clock + display | For expansion, comunicação, mais E/S |
| SR3XT series | SR3 | Extensions for SR2A201BD: E/S & comunicação | Upgrade existing system without replacing main unit |
- Guia de seleção de substituição
| Exigência | Modelo recomendado | Key Reason |
| Identical function | SR2A201FU | 100% compatível |
| Real‑time clock | SR2B201BD | Built‑in RTC |
| No local display | SR2D201BD | Menor custo |
| More analog inputs | SR2E201BD | 6 AI instead of 2 |
| AC supply | SR2A201BD‑AC | Matches mains voltage |
| High‑speed DC output | SR2A201BD‑DO | Saída transistorizada |
| System expansion | SR3B261BD | Modular, expandable I/O & comms |
| Legacy system repair | SR1‑A201BD | For old discontinued SR1 units |
- Notas de substituição
- Software compatibility: All SR2 models work with Zelio Soft 2; programs portable
- Compatibilidade de montagem: Standard DIN‑rail, mesmas dimensões (~70×90×60 mm)
- Wiring compatibility: Identical terminal layout, no rewiring needed
- Function check: Relógio, display, analog input count must match application
- Peças de reposição: Prefer SR2A201FU / SR2B201BD for long‑term availability
Schneider SR2A201BD Programming Software
The official programming software for Schneider SR2A201BD is Zelio Soft 2 (latest version: v5.4.2.2). It is a free configuration and programming tool developed by Schneider Electric for Zelio Logic smart relays (SR2 and SR3 series), used for managing, monitoramento, and controlling simple automation systems.
- Core Software Information
| Item | Detalhes |
| Programas | Zelio Soft 2 (Zelio2) |
| Versão mais recente | v5.4.2.2 (updated July 2022) |
| Developer | Schneider Elétrica |
| Tipo | Freeware |
| SO | Windows XP/Vista/7/8/10/11 (32/64-pedaço) |
| Project file | .zm2 |
| Cabo | Dedicated USB cable: SR2‑USB01 (3 eu) |
- Principais recursos
- Multi‑language programming
Supports Ladder (LD) and FBD (IEC 61131‑3)
Built‑in function library: logic, timers, contadores, comparators, math
- Debug & simulation
Offline simulation without hardware
Online monitoring of I/O, variables, and execution
Breakpoint debugging
- Project management
Upload / download programs
Backup de dados; EEPROM retention 10 anos
Auto‑generated documentation
- Diagnóstico
E/S, program, and communication fault detection
Status, error codes, event logs
- Compatibilidade & Notas de uso
- Series compatibility
Full support for SR2 series (SR2A201BD, SR2B201BD, SR2D201BD, etc.) and SR3 modular smart relays
Imports and converts SR1 series (por exemplo, SR1‑A201BD) programs
- Connection requirements
Use only SR2‑USB01; standard USB cables not supported
Install driver (included in setup)
Unit must be powered (24CCV) for programming
- Limitações
No SFC (Sequential Function Chart) apoiar
Program limits: Ladder ≤120 lines, FBD ≤200 lines
No serial link to HMI (por exemplo, Magelis/Harmony)
- Etapas de instalação
- Disable antivirus/firewall temporarily
- Run installer and follow wizard
- Connect SR2‑USB01 and install driver
- Launch software, create or open project
- Alternativas & Atualizações
| Aplicativo | Recomendação | Notas |
| Temporary programming | Zelio Soft 2 online trial | Limited functions |
| Atualização do sistema | SR3 series + Zelio Soft 2 | More I/O, comunicação, SFC |
| Advanced applications | EcoStruxure Machine Expert | Latest Schneider software suite |
Complete Model Guide for Schneider Zelio Logic SR2 Series
The Schneider Zelio Logic SR2 series is a product line of compact smart relays, designed specifically for simple automation systems. It offers three fixed I/O configurations: 10/12/20 pontos, with various combinations of power supply, display, clock, and analog inputs to meet different application requirements. Below is a detailed list of all series models classified by function:
- Regras de nomenclatura de modelo (Quick Identification)
SR2 [Código de Função] [Pontos de E/S] [Voltage Code]
Código de Função:
UM: With LCD display, no clock
B: With LCD display, with real-time clock
D: No LCD display, no clock
E: With LCD display, more analog inputs, no clock
Pontos de E/S: 10, 12, 20
Voltage Code:
BD: 24 CCV
FU: 100–240 VAC
JD: 12 CCV
- Complete Model List for SR2 Series (Classified by I/O Points)
- 10 I/O Points Models (6DE + 4RO, no analog input)
| Modelo | Tensão de alimentação | Mostrar | Relógio | Principais recursos | Aplicações Típicas |
| SR2A101BD | 24 CCV | Sim | Não | Tipo básico, with display for easy debugging | Simple control, on-site status monitoring |
| SR2A101FU | 100–240 VAC | Sim | Não | AC supply version, with display | Edifícios comerciais, AC-powered environments |
| SR2A101JD | 12 CCV | Sim | Não | Low-voltage version, with display | Vehicle/mobile equipment, 12Alimentação V |
| SR2B101BD | 24 CCV | Sim | Sim | With real-time clock, time control | Simple systems requiring time control |
| SR2B101FU | 100–240 VAC | Sim | Sim | AC + clock + display | Commercial time control (por exemplo, iluminação) |
| SR2B101JD | 12 CCV | Sim | Sim | 12V + clock + display | Time control for mobile devices |
| SR2D101BD | 24 CCV | Não | Não | Otimizado em termos de custos, sem exibição | Fixed programs, no on-site debugging |
| SR2D101FU | 100–240 VAC | Não | Não | AC + sem exibição | Low-cost mass applications |
| SR2D101JD | 12 CCV | Não | Não | 12V + sem exibição | Low-power simple control |
- 12 I/O Points Models (8DE + 4RO, basic version with 2AI)
| Modelo | Tensão de alimentação | Mostrar | Relógio | Entradas Analógicas | Principais recursos | Aplicações Típicas |
| SR2A121BD | 24 CCV | Sim | Não | 2 | Standard 12-point, with display | Pequeno & medium equipment control |
| SR2A121FU | 100–240 VAC | Sim | Não | 2 | Standard AC version | Commercial automation |
| SR2A121JD | 12 CCV | Sim | Não | 2 | Standard 12V version | Mobile equipment control |
| SR2B121BD | 24 CCV | Sim | Sim | 2 | With clock, 2 IA | Timing & analog monitoring |
| SR2B121FU | 100–240 VAC | Sim | Sim | 2 | AC + clock + 2 IA | Basic HVAC control |
| SR2B121JD | 12 CCV | Sim | Sim | 2 | 12V + clock + 2 IA | Vehicle temperature control |
| SR2D121BD | 24 CCV | Não | Não | 2 | Sem exibição, 2 IA | Fixed programs + entradas analógicas |
| SR2D121FU | 100–240 VAC | Não | Não | 2 | AC + sem exibição + 2 IA | Mass production equipment |
| SR2E121BD | 24 CCV | Sim | Não | 4 | Atualizado para 4 IA | Applications needing more analog detection |
| SR2E121FU | 100–240 VAC | Sim | Não | 4 | AC + 4 IA | Environmental monitoring systems |
- 20 I/O Points Models (12DE + 8RO, standard version with 2AI)
| Modelo | Tensão de alimentação | Mostrar | Relógio | Entradas Analógicas | Principais recursos | Aplicações Típicas |
| SR2A201BD | 24 CCV | Sim | Não | 2 | Standard 20-point, with display | Production line control, manuseio de materiais |
| SR2A201FU | 100–240 VAC | Sim | Não | 2 | Standard AC version | Complex control in commercial buildings |
| SR2A201JD | 12 CCV | Sim | Não | 2 | Standard 12V version | Large mobile equipment |
| SR2B201BD | 24 CCV | Sim | Sim | 2 | With clock, 2 IA | Complex control with timing functions |
| SR2B201FU | 100–240 VAC | Sim | Sim | 2 | AC + clock + 2 IA | Advanced HVAC control |
| SR2B201JD | 12 CCV | Sim | Sim | 2 | 12V + clock + 2 IA | Special vehicle control |
| SR2D201BD | 24 CCV | Não | Não | 2 | Sem exibição, 2 IA | Complex systems with fixed programs |
| SR2D201FU | 100–240 VAC | Não | Não | 2 | AC + sem exibição + 2 IA | Mass production lines |
| SR2E201BD | 24 CCV | Sim | Não | 6 | Atualizado para 6 IA | Controle de processo, multi-parameter monitoring |
| SR2E201FU | 100–240 VAC | Sim | Não | 6 | AC + 6 IA | Environmental monitoring centers |
- Modelos Especiais & Acessórios
- Special Output Type Models
SR2A201BD-DO: 24 CCV, 20 E/S, with display, no clock, 8 transistor outputs (instead of relay), suitable for high-speed DC loads
SR2B121BD-DO: 24 CCV, 12 E/S, with display and clock, 4 transistor outputs
- Extension Module Compatibility
All SR2 series models can work with SR3XT series extension modules to expand I/O points and functions:
SR3XT02BD: 2 digital input extension
SR3XT04BD: 4 digital output extension (relé)
SR3XT02AI: 2 analog input extension
SR3XT01AO: 1 analog output extension
SR3XTCOM: Communication extension module (supports Modbus RTU)
- Programação & Acessórios de montagem
| Modelo de acessório | Descrição |
| SR2-USB01 | Dedicated USB programming cable (3eu), connects PC to SR2 smart relay |
| Zelio Soft 2 | Official programming software (latest v5.4.2.2), supports LD and FBD programming |
| AM1DE200 | 15 mm standard DIN rail for SR2 series mounting |
| SR2PACK | Software de programação + USB cable kit, ideal for new users |
- Selection Quick Reference
| Exigência | Recommended Model Series | Principais fatores de seleção |
| Minimal system (10 E/S) | SR2A101xx / SR2B101xx | Power type, clock/display needed |
| Standard system (12 E/S) | SR2A121xx / SR2B121xx | Analog input requirement (2/4 canais) |
| Sistema complexo (20 E/S) | SR2A201xx / SR2B201xx | Entrada analógica (2/6 canais), tipo de saída |
| Timing control | SR2Bxxx series | Must have real-time clock |
| No on-site debugging | SR2Dxxx series | Sem exibição, menor custo |
| Multi-analog detection | SR2Exxx series | 4 (12 E/S) ou 6 (20 E/S) IA |
| High-speed DC output | SR2xxx-DO series | Transistor output instead of relay |
| Fonte de alimentação CA | SR2xxxFU series | Universal 100–240 VAC |
| Low-voltage supply | SR2xxxJD series | 12 CCV, suitable for mobile devices |
All SR2 series models are compatible with Zelio Soft 2 programming software. Programs can be directly ported between different models in the same series. Mounting dimensions are uniform (aprox.. 70×90×60 mm), facilitating system upgrade and maintenance.
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