The Zelio Logic SR2/SR3 smart relays by Schneider Electric offer a compact, user-friendly automation solution designed for straightforward control systems with 10 to 40 inputs and outputs. Part of the Modicon family, these smart relays provide an accessible alternative to traditional hardwired logic or dedicated card-based controllers, simplifying automation tasks.

Key Features

• Compact and Modular Design: Suitable for small to medium-sized automation projects, offering extreme compactness with up to 26 I/O modules available and extension options for both discrete and analog inputs/outputs.
• Input/Output Capacity: Varies by model, with common configurations including up to 20 I/O (12 discrete inputs and 8 relay outputs) operating at 24 V DC, optimized for basic and intermediate control needs.
• User Interface: Some models include built-in clocks and display units for convenient local monitoring, while others focus on compact simplicity without displays.
• Programming Flexibility: Supports ladder programming suitable for a wide range of linear and sequential control applications, with cycle times ranging between 6 to 90 ms, ensuring responsive operation.
• Robust Performance: Designed to operate reliably in industrial environments, with certifications including GOST, CSA, GL, UL, and compliance with IEC standards for EMC, vibration, shock, and environmental factors.
• Connectivity and Extensions: Supports integrations with Modbus or Ethernet communication modules for networked applications and the option for various analog and discrete I/O extension modules, enhancing system scalability and customization.

Environmental and Safety Compliance

• Rated IP20 for terminal blocks and IP40 for front panels, ensuring protection against solid objects and limited ingress of dust.
• Complies with environmental standards including RoHS and REACh regulations, reflecting Schneider Electric’s commitment to sustainability.

Benefits

• Simple Automation Solution: Ideal for automating straightforward control tasks in manufacturing, building management, and machine control.
• Scalable and Flexible: Easily expandable through extension modules to accommodate growing or evolving automation requirements.
• Reliable and Certified: Meets stringent industrial standards and certifications, ensuring safety and durability in demanding environments.