Control Cable

A control cable is a cable used in industrial and automation systems to transmit control signals, measurement data, protection commands, and automation instructions between equipment, machines, or control panels. It typically has multiple insulated cores and may include a shielding layer to reduce interference.

Control cables are widely used in industrial automation, robotic systems, PLC control panels, mechanical equipment, elevators, fire alarm systems, and building control networks to ensure accurate signal communication and coordinated operation.

Control cables transmit low-voltage control signals and data and typically have multiple cores and a shielding layer; power cables, on the other hand, transmit high current and are used to drive mechanical and electrical equipment. Therefore, their structure, insulation, and application requirements differ.

Control cables transmit electrical signals from control devices (such as sensors or PLCs) to other devices (such as motors or relays). These signals indicate when equipment starts/stops, changes settings, or sends operational feedback, ensuring automated and coordinated operation.

Common control cables include:

• YY cable – Unshielded flexible control cable
• CY cable – Shielded, for protection against electromagnetic interference
• SY cable – Steel wire braided armor, for mechanical protection
• Flexible cables and drag chain cables for dynamic motion applications

Yes – Control cables typically include a shielding layer (such as a copper braid or copper foil) to prevent electromagnetic interference (EMI), ensuring accurate and stable signal transmission in noisy industrial environments.

Control cables typically use finely stranded copper conductors for flexibility, PVC or PE insulation for electrical protection, and may include shielding materials and a protective outer sheath for improved environmental durability.

Control cables typically operate at low voltages (usually around 450/750V) and are designed for signaling and control applications, unlike power cables which typically withstand higher voltages.

Flexibility allows control cables to be installed in confined spaces, mobile machinery, cable chain systems, and robotic applications without damage, making them ideal for dynamic and automated environments.

To choose the right control cable, consider the following factors: conductor count, shielding requirements, environmental conditions (temperature, oil, humidity), required flexibility, and compliance with the electrical standards applicable to the control system.