The **M2TT-80-R2/CE** is a high-precision, electromagnetic safety interlock switch typically manufactured by companies like **IDEM Safety Switches**. It is designed to provide robust security for machine guards, ensuring that doors or gates remain locked until hazardous processes have stopped. --- ## 1. Core Technical Specifications The electronic and physical characteristics of this device are categorized below: | Feature | Specification Details | | :--- | :--- | | **Supply Voltage** | 24V DC (+/- 10%) | | **Solenoid Voltage** | 24V DC | | **Safety Contacts** | 2NC (Normally Closed) - Force Guided | | **Auxiliary Contacts** | 1NO (Normally Open) for Status Signaling | | **Holding Force** | Up to 2000N (F1max) | | **Material** | Mirror Polished Die-Cast Metal (316 Stainless Steel options available) | | **Ingress Protection** | IP67 (Dust-tight and waterproof) | --- ## 2. Key Electronic Components & Functions ### A. Solenoid Control (Power-to-Unlock) The "R2" designation often refers to the internal wiring configuration or the specific solenoid type. * **Mechanism:** This model typically operates on a **Spring Lock / Solenoid Release** principle. * **Electronic Logic:** The guard is locked by a mechanical spring. To unlock the guard, the electronic control system must energize the internal 24V DC solenoid. This ensures that if power is lost, the guard remains locked (fail-safe). ### B. Dual Channel Safety Monitoring The device utilizes two independent Normally Closed (NC) circuits. * **Redundancy:** By using two channels, the system can detect "short circuits" or "cross-faults" when connected to a Safety Relay or PLC. * **Force-Guided Contacts:** These are mechanically linked so that if one contact welds, the other cannot change state, preventing a false "safe" signal. ### C. Built-in LED Diagnostics The electronic housing includes LED indicators to provide immediate visual feedback: 1. **Green:** Solenoid energized (Guard Unlocked). 2. **Red/Off:** Guard locked or Safety circuit open. --- ## 3. Connection Diagram (General Layout) The internal wiring is usually accessed via an M20 conduit entry or a pre-installed M12 connector. ```cpp // Representative Internal Logic Mapping // Pin/Terminals | Function // ----------------------------------- // 11/12 | Safety Circuit 1 (NC) // 21/22 | Safety Circuit 2 (NC) // 33/34 | Auxiliary Signal (NO) // A1 / A2 | Solenoid Power (24V DC) ``` --- ## 4. Compliance and Safety Standards The "CE" marking indicates compliance with European safety directives. * **ISO 13849-1:** Suitable for use in PLe (Performance Level e) systems. * **IEC 60947-5-1:** Standard for low-voltage switchgear and controlgear. * **EN 1088 / ISO 14119:** Specifically regarding interlocking devices associated with guards.