1. Introduction
This manual provides essential information for the safe and effective use of your CNMAWAY M8 Sensor Connectors. These connectors are designed for robust and reliable connections in various industrial automation and control applications. Please read this manual thoroughly before installation and operation.
The M8 sensor connectors are widely used in automatic control, automatic measurement, remote control, computer technology, angle and coordinate measurement on CNC machine tools, and robot competitions. They are characterized by their light weight, small size, low power consumption, and high reliability.
2. Product Overview
CNMAWAY M8 sensor connectors are available in various configurations to suit diverse application needs. These include straight and angled designs, as well as male and female types, with options for 3-pin or 4-pin connections.
Individual components are designed for durability and ease of assembly:
- Male Straight Connector: Features a threaded coupling and typically fixed with an inner hexagonal screw.
- Female Straight Connector: Also features a threaded coupling and fixed with an inner hexagonal screw.
- Male Angle Connector: Offers a right-angle connection, available with either inner hexagonal screw fixing or requiring soldering.
- Female Angle Connector: Offers a right-angle connection, available with either inner hexagonal screw fixing or requiring soldering.
- Flange Socket Connectors: Designed for panel mounting, available in male and female versions.
3. Specifications
3.1. M8 Series Technical Parameters
| Feature | 3-pin | 4-pin |
|---|---|---|
| Number of contacts | 3 | 4 |
| Connector locking system | Screw threaded | Screw threaded |
| Termination | Screw, Solder | Screw, Solder |
| Max. Wire gauge | 0.25mm² | 0.25mm² |
| Cable outlet diameter | 3.5-5mm | 3.5-5mm |
| Degree of protection | IP67 | IP67 |
| Mechanical operation | >100 mating cycles | >100 mating cycles |
| Temperature range | -25°C to 85°C | -25°C to 85°C |
| Rated voltage | 60V | 30V |
| Rated impulse voltage | 1500V | 1500V |
| Pollution degree | 3 | 3 |
| Overvoltage category | II | II |
| Material group | III | III |
| Rated current (40°C) | 3A | 3A |
| Contact resistance | <=3mΩ (Gold) | <=3mΩ (Gold) |
| Material of contact | Brass | Brass |
| Contact plating | Gold | Gold |
| Material of contact body | Nylon/PA | Nylon/PA |
| Material of housing | Nylon/PA | Nylon/PA |
3.2. M8 Series Dimensions
3.3. M8 Flange Socket Dimensions
4. Setup and Installation
4.1. Installation Alignment
Ensure proper alignment during installation. For shaft systems, use coaxial or coupling connections. Strictly control radial and angular deviation to prevent hard contact or knocking on the shaft end.
4.2. Protective Sealing
Ensure all cable joints are waterproof and dustproof. Select connectors with appropriate protection levels (e.g., IP67) for outdoor or corrosive environments to prevent oil and dust from entering the connector shell.
4.3. Wiring Specifications
Connect power and signals strictly according to the pin definitions. Ensure that the voltage matches the rated value of the connector. For shielded wires, ensure reliable grounding at one end and keep them away from strong electrical cables to prevent interference.
4.3.1. Pinout Diagrams
4.3.2. Contact Fixing Methods
- Straight M8 Sensor Connectors: The contacts are fixed with an inner hexagonal screw.
- Angle M8 Sensor Connectors: There are two options for contact fixing: either fixed with an inner hexagonal screw or requiring soldering.
5. Operation Guidelines
5.1. Operation Protection
To ensure longevity and proper function, avoid operating the connectors at excessive speed or temperature. Prevent severe vibration and impact. Do not subject the shaft end to additional axial or radial forces.
5.2. Signal Protection
For long-distance signal transmission, signal amplification or anti-interference processing may be required to prevent signal loss and distortion.
6. Maintenance
Always operate after power off. Regularly check the wiring terminals for any signs of looseness or erosion. Ensure that the connector is free of stains and scratches. Proper maintenance helps ensure reliable performance and extends the product's lifespan.
7. Troubleshooting
7.1. Common Issues
- Loose Connections: If signals are intermittent or lost, check all wiring terminals for tightness.
- Physical Damage: Inspect the connector for any cracks, bends, or other physical damage that might compromise its integrity or IP rating.
- Environmental Factors: Ensure the connector's IP rating is suitable for the operating environment to prevent ingress of water, dust, or corrosive substances.
7.2. Preventing Damage
To prevent issues like a snapped connector ring, ensure proper tightening during assembly. Avoid over-tightening, which can stress the materials, and ensure components are correctly seated before applying force.
8. User Tips
- Quality Assurance: Users have noted the good quality, chrome-plated brass metal parts, and gold-plated contacts, along with sealing O-rings, contributing to a well-made product.
- Size Expectations: Some users found the connectors to be smaller than anticipated. Always refer to the detailed dimension diagrams (Figure 8 and Figure 9) for precise measurements.
- Assembly Considerations: Be aware that some connectors, particularly angle types, may require soldering for contact fixing, while others use inner hexagonal screws. Ensure you have the correct tools (e.g., a 6-point wrench) for assembly.
- Configuration Needs: Consider your specific pin and gender requirements (e.g., 3-pin male, 4-pin female) when ordering to ensure you receive the correct combination for your application.
9. Certifications
Our M8 sensor connectors are CE certified, ensuring compliance with European safety, health, and environmental protection requirements.
10. Additional Documents
For a comprehensive guide and further technical details, please refer to the full user manual PDF available at: M8 Sensor Connector User Manual (PDF).