Section 8

Relay / Switch Output Control Technology

⏱️ Estimated Duration: 20 mins

Master the electrical characteristics, safety wiring specifications, and control methods for high-power loads of relay outputs.

📚 Learning Points

Relay Working Principle and Function: Introduce the structure and role of relays, and common types of controlled devices (lighting, pumps, solenoid valves, etc.)
Relay Electrical Parameters: Differences and selection between maximum resistive load (e.g., AC220V 9A / DC30V 9A) and inductive load
Relay Wiring Specifications: Demonstrate wiring methods for Normally Open (NO), Normally Closed (NC), and Common (COM) terminals, paying attention to high and low voltage separation
High-power Equipment Control: Introduce how to achieve safe control of high-power loads (such as three-phase motors, high-power heating rods) through external AC contactors when relay capacity is insufficient
AC Contactor Wiring: Demonstrate the wiring method of IOTAutoMate relays driving AC contactor coils

📝

Content in Progress

Detailed content for this section is currently being written. Please stay tuned. You can browse other completed sections or check out the MQTT Protocol Documentation .