Smart Relay
⚡ Zelio Logic
Zelio Logic is Schneider Electric’s family of smart relay controllers designed for simple automation tasks. It bridges the gap between traditional relays and full PLCs, offering compact, programmable control for small machines, building automation, and standalone systems.
It is ideal when a full Modicon PLC (like M221/M241) is not required, but logic, timing, counting, and sequencing are still needed.
🔧 Key Features of Zelio Logic
- Programmable smart relay — Replaces multiple relays, timers, and counters with one compact device.
- Two product families
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- SR2: Compact base units
- SR3: Modular, expandable units
- Easy programming — Zelio Soft software with ladder or function block diagrams.
- Integrated display — For local monitoring and parameter adjustment.
- Wide I/O options — Digital, analogue, and expansion modules.
- Multiple communication options — Depending on model (e.g., Modbus).
- DIN‑rail or panel mounting — Flexible installation.
🏭 Typical Applications
- Small machine automation — Packaging, conveyors, simple OEM equipment.
- Building automation — Lighting, shutters, HVAC sequencing.
- Pump and motor control — Alternation, timing, and level control.
- Access control & gates — Barriers, doors, and entry systems.
- Standalone automation panels — Replaces multiple relays and timers.
🧠 Why Choose Zelio Logic?
- Simple programming — No PLC expertise required.
- Cost‑effective automation — Ideal for small systems.
- Compact footprint — Saves panel space.
- Reliable and industrial‑grade — Built for long‑term operation.
⭐ One‑line summary
Zelio Logic is a compact, programmable smart relay that delivers simple, reliable automation for small machines and building systems.



