The **CSS-613H** is a specialized high-performance **Magnetic Proximity Sensor** (often categorized under magnetic switches or reed sensors), commonly used in industrial automation for cylinder position sensing or speed detection. --- ## 1. Core Technical Specifications The electronic performance of the CSS-613H is defined by its switching capability and electrical endurance. | Feature | Specification | | :--- | :--- | | **Switching Voltage** | 5V - 240V AC/DC | | **Switching Current** | 100mA Max | | **Contact Rating** | 10W Max | | **Voltage Drop** | 2.5V Max @ 100mA | | **Indicator** | Red LED (Internal) | | **Internal Switch Type** | Reed Switch (SPST - Normally Open) | | **Operating Temperature** | -10°C to +70°C | --- ## 2. Key Electronic Components The device is not just a simple wire; it contains a specific circuit layout to ensure durability and status visibility. ### A. The Reed Switch The heart of the CSS-613H is a **Dry Reed Switch**. It consists of two ferromagnetic blades hermetically sealed in a glass envelope. When a magnetic field (from a piston or external magnet) approaches, the blades close the circuit. ### B. LED Indicator & Protection To assist with troubleshooting and setup, the unit includes: * **LED Diode:** Lights up when the circuit is closed. * **Current Limiting Resistor:** Protects the LED from burning out at higher voltages (up to 240V). * **Varistor/Zener Diode:** Often included in these models to suppress voltage spikes (back-EMF) when switching inductive loads like relays. --- ## 3. Wiring Configuration The CSS-613H typically uses a **2-wire** configuration. Because it is a non-polarized reed-type switch, it can be wired in either direction, though following standard wire colors is recommended for consistency. ```yaml Wire Colors: - Brown: Positive (+) or Line - Blue: Negative (-) or Neutral - Load: Must be placed in series with the sensor ``` > **Warning:** Never connect the sensor directly across a power source without a load (relay, PLC input, or lamp). Doing so will cause an immediate over-current failure of the internal reed contact. --- ## 4. Application Logic The electronic signal produced by the CSS-613H is typically fed into: 1. **PLC Inputs:** To signal that a pneumatic cylinder has reached its end-stroke. 2. **Relay Coils:** To trigger high-power components. 3. **Counters:** For RPM or cycle counting.