EE-SX672 (OMRON) Specifications
#### Descriptions
- Manufacturer: OMRON
- Type: Photomicrosensor (Transmissive Type)
- Model: EE-SX672
- Sensing Method: Transmissive (Through-beam)
- Output Configuration: Phototransistor
- Housing Material: Plastic
#### Features
- Compact and lightweight design
- High sensitivity with stable detection
- Built-in emitter and receiver in a single unit
- Fast response time
- Operates in the infrared spectrum
- Suitable for position detection and object sensing
#### Electrical Characteristics
- Supply Voltage: 5V DC ±10%
- Collector-Emitter Voltage (VCEO): 30V
- Emitter Current (IF): 50mA (max)
- Collector Current (IC): 20mA (max)
- Power Dissipation (Pd): 75mW
#### Optical Characteristics
- Emitter Type: Infrared LED (GaAs)
- Detection Distance: 5mm (Slot width)
- Response Time: ≤ 3μs (ON), ≤ 4μs (OFF)
#### Mechanical Characteristics
- Slot Width: 5mm
- Housing Dimensions: Approx. 20.2mm (L) × 6.5mm (W) × 8.8mm (H)
- Terminal Type: Lead wires
#### Environmental Ratings
- Operating Temperature: -25°C to +85°C
- Storage Temperature: -30°C to +85°C
- Humidity Range: 35% to 85% RH (non-condensing)
#### Applications
- Printers
- Copiers
- Automated equipment
- Position sensing
- Object detection
This information is strictly based on manufacturer specifications. For detailed usage guidelines, refer to the official OMRON datasheet.
# EE-SX672 Photomicrosensor: Technical Analysis and Implementation Guide
## 1. Practical Application Scenarios
The EE-SX672, manufactured by OMRON, is a compact, slot-type photomicrosensor featuring an infrared emitter and phototransistor detector. Its primary function is to detect object presence or motion by interrupting the light beam between the emitter and receiver. Below are key application scenarios:
Industrial Automation
- Conveyor Belt Systems: Detects workpiece presence for sorting, counting, or triggering subsequent processes.
- Robotic Assembly Lines: Ensures precise part positioning before robotic arms engage.
- Packaging Machinery: Verifies package alignment before sealing or labeling.
Consumer Electronics
- Printers & Copiers: Monitors paper feed status to prevent jams.
- Vending Machines: Confirms product dispensing or detects tampering.
Safety & Security
- Door Interlocks: Prevents machinery operation when safety doors are open.
- Intrusion Detection: Triggers alarms when an object crosses a protected boundary.
The EE-SX672’s 0.5 mm slot width and high-resolution detection make it ideal for precision applications, while its compact form factor suits space-constrained designs.
## 2. Common Design-Phase Pitfalls and Avoidance Strategies
Misalignment of Optical Components
- Pitfall: Improper emitter-receiver alignment reduces sensitivity or causes false triggers.
- Solution: Use alignment jigs during PCB mounting and verify signal integrity with an oscilloscope.
Ambient Light Interference
- Pitfall: External IR sources (e.g., sunlight, LEDs) may saturate the phototransistor.
- Solution: Implement optical shielding or modulate the emitter signal with synchronous detection.
Insufficient Current Limiting
- Pitfall: Overdriving the IR LED reduces lifespan or causes overheating.
- Solution: Adhere to the datasheet’s forward current (IF) specifications (typically 20 mA max).
Mechanical Vibration Effects
- Pitfall: Vibrations may cause intermittent beam interruptions.
- Solution: Secure the sensor with damping mounts or use hysteresis in signal conditioning circuits.
## 3. Key Technical Considerations for Implementation
Electrical Parameters
- Forward Voltage (VF): ~1.2 V (ensure proper voltage regulation).
- Output Type: Phototransistor (open collector)—requires a pull-up resistor (4.7–10 kΩ recommended).
Environmental Factors
- Operating Temperature: -25°C to +85°C (avoid condensation in high-humidity environments).
- Response Time: <1 ms (suitable for high-speed detection).
Mechanical Integration
- Ensure the detected object’s material and surface finish (reflective/non-reflective) do not affect beam absorption.
- Verify mounting stability to prevent misalignment from mechanical stress.
By addressing these factors, designers can maximize the EE-SX672’s reliability in diverse applications.