The **KNS-CB-R** is an electronic component commonly used in industrial automation, specifically associated with **KNS (KOSMA)** brand pneumatic and sensor equipment. It is typically identified as a **magnetic sensor (Reed Switch)** designed for detecting the position of a piston within a pneumatic cylinder. --- ### 1. Key Technical Specifications The following table outlines the standard electronic characteristics of the KNS-CB-R sensor: | Feature | Specification | | :--- | :--- | | **Switching Logic** | SPST, Normally Open (NO) | | **Sensor Type** | Reed Switch (Magnetic) | | **Operating Voltage** | 5V ~ 240V AC/DC | | **Switching Current** | 100mA max. | | **Contact Capacity** | 10W max. | | **Voltage Drop** | 2.5V max @ 100mA DC | | **Indicator Lamp** | Red LED | | **Cable Type** | PVC (usually 2-meter length) | --- ### 2. Electronic Operating Principle The KNS-CB-R functions based on magnetic field interaction: 1. **Magnet Detection:** Inside the pneumatic cylinder, the piston is fitted with a permanent magnet ring. 2. **Contact Closure:** As the piston reaches the position where the KNS-CB-R is mounted, the magnetic field pulls the internal reed contacts together. 3. **Circuit Completion:** This closes the electrical circuit, allowing current to flow to a PLC (Programmable Logic Controller) or a relay. 4. **Visual Feedback:** An integrated LED lights up to indicate that the sensor has been triggered (closed state). --- ### 3. Wiring Diagram The KNS-CB-R is a **2-wire** device. Because it is a simple reed switch, it can handle both AC and DC loads. ```mermaid graph LR A[Power Source +] --- B[Load/PLC Input] B --- C[KNS-CB-R Brown Wire] C --- D[KNS-CB-R Blue Wire] D --- E[Power Source -] ``` * **Brown Wire:** Connect to the positive side (+) or the load. * **Blue Wire:** Connect to the negative side (-) or common. --- ### 4. Installation and Safety Notes * **Surge Protection:** Since this is a mechanical reed switch, using it with inductive loads (like large solenoid valves) without a flyback diode or surge suppressor can shorten the lifespan of the contacts. * **Mounting:** It is usually secured via a circular clamp or a "T-slot" on the cylinder body. * **Polarity:** While reed switches are technically non-polar, the **LED indicator** inside the KNS-CB-R is polarity-sensitive. If the wires are reversed, the sensor will still work, but the LED will not light up.