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How to choose the best machine vision cable for industrial automation

How to Choose the Best Machine Vision Cable for Industrial Automation

Machine vision systems are critical for quality control, precision, and efficiency in industrial automation. Selecting the right machine vision cable ensures reliable data transmission, minimal downtime, and optimal system performance. Here’s a direct guide to choosing the best cable for your application.

​1. Understand Cable Types

Machine vision cables fall into two primary categories:

• ​Coaxial Cables: Ideal for analog cameras, offering high-frequency signal integrity.
• ​Twisted-Pair Cables (e.g., Ethernet): Suited for digital cameras (GigE Vision, USB3 Vision) and high-speed data transfer.
• ​Hybrid Cables: Combine power, data, and control signals in one jacket for simplified cabling.

Choose based on your camera interface (GigE, USB, Camera Link, CoaXPress) and data speed requirements.

​2. Check Electrical Specifications

• ​Bandwidth: Match the cable’s bandwidth to your camera’s output (e.g., 10 Gbps for 4K imaging).
• ​Impedance: Ensure compatibility with your system (e.g., 50Ω for coaxial, 75Ω for HD video).
• ​Shielding: Opt for double-shielded or foil-shielded cables to reduce electromagnetic interference (EMI).

​3. Prioritize Durability

Industrial environments demand rugged cables. Look for:

• ​Jacket Material: Polyurethane (PUR) or thermoplastic elastomer (TPE) for abrasion resistance and flexibility.
• ​IP Rating: Waterproof and dustproof cables (e.g., IP67/IP68) for harsh conditions.
• ​Bend Radius: Flexible cables with a small bend radius prevent damage in tight spaces.

​4. Verify Connector Compatibility

Match connectors to your camera and hardware:

• ​Common Types: M8/M12, RJ45, BNC, or proprietary connectors (e.g., Hirose, LEMO).
• ​Locking Mechanisms: Screw-lock or push-pull connectors to prevent accidental disconnections.

​5. Factor in Cable Length

• ​Signal Degradation: Longer cables may require repeaters or active cables for signal integrity.
• ​Standard Lengths: Prefer cables ≤15 meters for USB3 Vision or ≤100 meters for GigE Vision.

​6. Test for Compliance

Ensure cables meet industry standards:

• ​GigE Vision: Compliant with IEEE 802.3 for Ethernet-based systems.
• ​USB3 Vision: Certified for USB 3.0/3.1 Gen 1 speeds (5 Gbps).
• ​CE/UL Certification: Guarantees safety and performance in industrial settings.

​7. Evaluate Supplier Reputation

Source cables from trusted manufacturers specializing in industrial automation. Check reviews, warranties, and technical support options.