TE.CO Grey Cable TFX 4G 1.5 ST 564mt UNEL Grey: Industrial Control and PLC Coil Cable

The TE.CO Grey Cable model TFX 4G 1.5 ST 564mt is a flexible power and control cable specifically designed for industrial automation environments. With 4 cores of 1.5 mm² cross-section, this UNEL grey sheathed cable is suitable for connecting PLC output coils, contactors, solenoids, and other low-voltage control devices. The cable’s construction ensures reliable performance in fixed installations or occasional flexing applications such as control panels, machine wiring, and distribution boards.

Conductor and Insulation Specifications

The TFX 4G 1.5 cable features finely stranded bare copper conductors (class 5 according to IEC 60228), providing high flexibility for easy routing in tight spaces. Each conductor is insulated with a color-coded PVC compound: brown, black, grey, and green/yellow for the protective earth (ground). The insulation thickness complies with VDE 0250 and HD 21.5 standards, ensuring voltage endurance up to 450/750V nominal. The insulation resistance is greater than 20 MΩ·km at 20°C.

Mechanical and Environmental Characteristics

The cable’s outer sheath is made of UV-resistant, oil-resistant UNEL grey PVC, suitable for indoor and sheltered outdoor use. It operates within a temperature range of -15°C to +70°C (fixed installation) and -5°C to +70°C (flexing use). Minimum bending radius is 4x cable diameter for fixed installation and 6x for flexing. The cable is flame retardant according to IEC 60332-1-2. It also resists mineral oils, diluted acids, and alkaline solutions, making it ideal for machine tools and industrial environments.

Application in PLC and Control Systems

Specifically, this cable is designed to carry control signals from PLC output modules to solenoid coils, relay coils, contactors, and indicator lights. The 1.5 mm² cross section is appropriate for typical PLC outputs (0.5A to 2A) with voltage drop considerations. The green/yellow earth core provides safety grounding for the controlled devices. The TFX 4G 1.5 ST cable can be used in control panels, junction boxes, and conduits. Its grey sheath is a standard identifier for control circuits (as opposed to orange for 400V power cables).

Length and Packaging

The model “ST 564mt” indicates a standard length of 564 meters per reel (or custom cut lengths). The cable is supplied on a non-returnable wooden reel, with end caps to protect against moisture during transport. Weight is approximately 110 kg per km. The cable surface is printed with the type designation “TE.CO TFX 4G 1.5 450/750V” at regular intervals for identification.

Installation Guidelines

For PLC coil connections, ensure the cable is separated from high-power lines to avoid electromagnetic interference. Use appropriate ferrules for stranded conductors when connecting to terminal blocks. The maximum conductor temperature under continuous operation is 70°C (for PVC insulation). For group laying in bundles, derating factors from IEC 60364-5-52 should be applied. The cable is suitable for direct burial if protected by conduit, but not recommended for permanent outdoor exposure without additional UV protection (though the UNEL grey sheath provides moderate UV resistance).

Compliance and Certifications

The TE.CO TFX 4G 1.5 ST cable complies with harmonized standards HD 21.5 S3, VDE 0281-5, and IEC 60227-5. It carries the CE marking for the European market and is RoHS compliant. The manufacturer TE.CO (Tecnicas de Componentes) provides a 5-year warranty against manufacturing defects. For PLC coil wiring, this cable offers a cost-effective, reliable solution meeting low-voltage directive requirements. Always consult local electrical codes for specific installation requirements.