The **XCSMP79L5** is a safety interlock switch manufactured by **Telemecanique Sensors** (part of the Schneider Electric ecosystem). It is a compact, plastic safety switch designed specifically for monitoring the opening/closing of light guards or small protective covers on machinery. --- ### 1. Technical Specifications The following table outlines the primary electrical and mechanical characteristics of the XCSMP79L5. | Feature | Specification | | :--- | :--- | | **Contact Type** | 2 NC (Normally Closed) + 1 NO (Normally Open) | | **Switching Method** | Slow-break, simultaneous | | **Material** | PA (Polyamide) Plastic Body | | **Cable Length** | 5 Meters (Pre-cabled) | | **Voltage Rating** | 240V AC / 250V DC | | **Current Rating (Ie)** | 1.5A at 240V (AC-15); 0.1A at 250V (DC-13) | | **IP Rating** | IP67 (Dust tight and waterproof) | --- ### 2. Internal Electronic Design The XCSMP79L5 is an electromechanical device. Its internal operation relies on physical contact movement rather than solid-state sensors. * **Contact Configuration:** It features 3 poles. In a safety circuit, the **NC (Normally Closed)** contacts are typically wired to a safety relay to ensure that if the guard is opened, the machine circuit is broken immediately. * **Positive Opening Operation:** The NC contacts are "positive opening," meaning that even if the contacts weld together, the mechanical force of opening the guard is designed to pull them apart (compliant with EN/IEC 60947-5-1). * **Slow-break Mechanism:** The contacts move at the same speed as the actuator. This is standard for simple safety interlocks where "Snap Action" is not required. --- ### 3. Wiring Diagram Logic The device is provided with a 5-meter molded cable. The internal wiring typically follows this color-coding logic (verify with specific datasheet before installation): | Terminal Function | Typical Wire Colors | | :--- | :--- | | **NC Contact 1** | Red / Red-White | | **NC Contact 2** | Blue / Blue-White | | **NO Contact** | Orange / Orange-White | --- ### 4. Safety Level Integration When integrated into a safety system, the XCSMP79L5 can help a machine reach the following safety ratings: * **Category 4** (with an appropriate monitoring system/safety relay). * **Performance Level (PL) e**. * **SIL 3** (Safety Integrity Level). ---