## Overview of XCSDMP7915 The **XCSDMP7915** is a coded magnetic safety switch manufactured by Telemecanique Sensors (formerly Schneider Electric). It is part of the Preventa XCS range, designed to monitor the status of safety guards and doors in industrial machinery. --- ### Technical Specifications The following table outlines the primary electrical and physical characteristics of the XCSDMP7915: | Feature | Specification | | :--- | :--- | | **Contact Type** | 2 NC (Normally Closed) + 1 NO (Normally Open) | | **Switching Technology** | Coded Magnetic | | **Rated Supply Voltage** | 24V DC | | **Max Switching Voltage** | 100V DC | | **Max Switching Current** | 100 mA | | **Electrical Connection** | Pre-wired Cable (Length: 5 meters) | | **Enclosure Material** | Plastic (Rectangular) | | **Ingress Protection** | IP66 / IP67 | --- ### Key Electronic Components & Working Principle 1. **Coded Magnetic Reed Switches:** Unlike standard magnets, this device uses a "coded" system. The switch only reacts to a specific magnetic pattern provided by the matching actuator. This prevents simple bypasses using standard magnets. 2. **Safety Contacts (2NC + 1NO):** * **NC Contacts:** Used for the safety circuit. When the door is closed and the magnet is present, these contacts are closed. * **NO Contact:** Typically used for signaling or PLC status monitoring. 3. **Staggered Operation:** The electronic internal logic ensures a "staggered" opening/closing sequence. This prevents the safety relay from resetting incorrectly due to mechanical vibrations or slow door movement. --- ### Wiring Configuration The device is supplied with a 5-meter PVC cable. The typical color-coding for this specific 3-pole configuration is as follows: ```text [ Brown ] ---| |--- [ Blue ] (NC Contact 1) [ White ] ---| |--- [ Black ] (NC Contact 2) [ Grey ] ---| |--- [ Pink ] (NO Contact - Signaling) ``` *Note: Always refer to the specific wiring diagram printed on the device label, as color codes can vary by manufacturing batch.* --- ### Safety Performance To achieve high safety levels (up to Category 4 / PLe), the XCSDMP7915 must be connected to a dedicated **Safety Monitoring Relay** (such as the Preventa XPS series). It is not designed to break high-power loads directly.