The **MA11FAA-R** is a specific part number belonging to a series of high-performance magnetic proximity sensors, typically manufactured by companies like **Bernstein AG**. These sensors are used in industrial automation to detect the position of objects without physical contact. ### 1. Technical Specifications The following table summarizes the key electrical and physical characteristics of the MA11FAA-R: | Feature | Specification | | :--- | :--- | | **Sensor Type** | Magnetic Proximity (Reed Switch) | | **Contact Type** | 1 Normally Open (NO) | | **Switching Voltage** | Max 250 V AC/DC | | **Switching Current** | Max 1.0 A | | **Switching Capacity** | Max 60 VA / 60 W | | **Housing Material** | Aluminum (FAA designation) | | **Connection** | Integrated Cable (usually 1m or 3m) | | **Protection Class** | IP67 (Dust tight and water immersion) | --- ### 2. Component Composition The "MA11FAA-R" part number can be decoded as follows: * **MA**: Refers to the magnetic actuation principle. * **11**: Specific series/size designation (often related to thread diameter or body length). * **FAA**: Indicates the housing style and material (Threaded Aluminum body). * **-R**: Generally indicates a specific termination or internal reed switch sensitivity/rating. ### 3. How it Works 1. **Reed Switch Technology**: Inside the aluminum housing is a hermetically sealed glass tube containing two ferromagnetic blades. 2. **Magnetic Induction**: When a permanent magnet (the actuator) comes within the specified sensing range, the magnetic field pulls the two blades together. 3. **Circuit Closure**: This completes the electrical circuit, sending a signal to a PLC (Programmable Logic Controller) or relay. ### 4. Key Advantages * **Durability**: The aluminum housing provides excellent mechanical protection compared to plastic alternatives. * **Passive Operation**: It does not require a power supply to operate; it is triggered solely by magnetic fields. * **Environmentally Sealed**: The IP67 rating ensures it functions reliably in harsh industrial environments with oil, water, or dust. --- ### 5. Common Applications * **End-of-travel sensing** in pneumatic cylinders. * **Door/Gate position monitoring** in security systems. * **Object detection** on conveyor belts where mechanical contact is undesirable.