ABB FSO-21

Here is the professional introduction of the **ABB FSO-21** fiber optic sensor:

### **1. Product Overview**

The ABB FSO-21 is a high-performance **fiber optic photoelectric sensor**, part of ABB's industrial automation product line for detection applications. Designed for harsh industrial environments, it is ideal for scenarios with electromagnetic interference or requiring electrical isolation.

### **2. Key Specifications**

| Feature             | Specification               |

|---------------------|----------------------------|

| **Detection Type**  | Reflective/Through-beam (optional) |

| **Light Source**    | Red LED (650nm)             |

| **Detection Range** | Reflective: 0-2m (depends on reflector)<br>Through-beam: Up to 15m |

| **Response Time**   | ≤1ms                       |

| **Output Type**     | PNP/NPN transistor output (NO/NC optional) |

| **Supply Voltage**  | 10-30V DC                  |

| **Protection Class**| IP67 (dustproof & waterproof) |

| **Ambient Temperature** | -25°C ~ +55°C         |

### **3. Key Features**

- **Strong Anti-Interference**  

  Utilizes fiber optic transmission, completely immune to electromagnetic fields (e.g., inverters, welding equipment).

- **Tiny Object Detection**  

  Capable of detecting objects as small as 0.1mm (with dedicated lens).

- **Flexible Configuration**  

  - Separate fiber optic probe and amplifier design  

  - Multiple fiber head options (straight/right-angle/threaded mount)

- **Status Indication**  

  Dual-color LED display (power/output status)

### **4. Typical Applications**

- **High-Risk Areas**  

  Explosive zones in petrochemical plants, welding robot workstations

- **Precision Detection**  

  Semiconductor wafer positioning, micro-component counting

- **Harsh Environments**  

  High-dust (e.g., cement plants), strong vibration (e.g., stamping equipment)

### **5. Installation Notes**

- Fiber bending radius must be ≥25mm to avoid light loss

- Avoid contamination of fiber connectors (regular cleaning with alcohol recommended)

- Use modulated version (FSO-21M) in strong ambient light conditions

### **6. Recommended Accessories**

- **Fiber Head Types**  

  FST-10 (standard straight) / FST-15 (right-angle)

- **Mounting Brackets**  

  FSB-01 (magnetic base) / FSB-02 (threaded mount)

This sensor can be seamlessly integrated into ABB industrial automation systems and directly interfaces with PLCs (e.g., AC500 series). If you need this product, feel free to contact us!