The Solenoid Interlock by Schmersal is an advanced safety solution used in industrial automation systems to control access to hazardous zones. It combines a mechanical interlock with an electromagnetic solenoid locking mechanism, ensuring that safety guards cannot be opened while machines are running or while dangerous motion is still present.
These interlocks are designed to prevent premature opening of safety doors until hazardous conditions such as rotating parts, conveyor motion, or residual energy have completely stopped. Once the system confirms a safe state, the interlock releases, allowing controlled access for maintenance or inspection.
Schmersal solenoid interlocks are available in various series (such as AZM, MZM), offering electromechanical and electronic designs with RFID coding options to prevent tampering and unauthorized bypassing.
Advanced models feature high holding forces (up to several thousand newtons), ensuring that guards remain securely locked even under mechanical stress. They also support integration with safety relays, standstill monitors, and PLC systems, making them suitable for complex automation environments.
With robust construction, flexible mounting options, and high safety performance, these interlocks are widely used to maintain safe machine operation while ensuring compliance with international safety standards.
Key Features & Specifications
• Electromagnetic solenoid locking mechanism for controlled guard access
• Prevents opening of safety doors, gates, and protective guards during operation
• High holding force for secure locking (up to several thousand N)
• Available in electromechanical and RFID-coded electronic versions
• Protection against tampering with high coding levels (ISO 14119 compliant)
• Supports power-to-lock and power-to-unlock configurations
• Manual release / emergency release options for safe access
• Compact and robust industrial design (IP66 / IP67 / IP69 variants available) Compatible with safety relays, controllers, and monitoring systems
• Suitable for series wiring and diagnostic integration in automation networks
Applications
Solenoid Interlocks by Schmersal are widely used in:
• Industrial automation and machine safety systems
• Robotic work cells and automated production lines
• Packaging, processing, and assembly machinery
• Conveyor and material handling systems
• Machine guarding and safety door monitoring
• Automotive, steel, chemical, and manufacturing industries
The Solenoid Interlock by Schmersal delivers reliable guard locking and controlled access, ensuring that hazardous machine operations are fully secured. Its advanced safety features, robust design, and compliance with global standards make it an essential component for modern industrial safety systems.
