Servo Cable

What is Servo Cables CP?

The Servo Cable CP is a low-voltage, unarmored and screened dynamic servo motor cable featuring Class 6 fine-stranded bare copper conductors, low-capacitance Polypropylene (PP) insulation, a high-density tinned copper wire braid (TCWB) screen, and an oil-resistant orange PUR outer sheath complying with Siemens Standard 6FX8008+, EN 60811-404, and IEC/EN 60332-1 standards. It is designed for low-capacitance power transmission and signal feedback up to 0.6/1kV between servo controllers and frequency-driven motors in continuous flex drag chains and automated machine tools.

Engineered to withstand millions of dynamic flexing cycles while suppressing electromagnetic interference (EMI), this cable combines low-loss PP insulation with an ultra-flexible copper stranding matrix and a 360-degree TCWB shield. The specialized orange Polyurethane (PUR) outer jacket provides exceptional tear, notch, and abrasion resistance against continuous drag chain friction while offering long-term stability against aggressive cutting oils, industrial coolants, and grease splashes.

Servo Cables CP Construction

• Conductor: Class 6 fine-stranded bare copper conductors per IEC/EN 60228 delivering superior dynamic flex life under continuous movement.
• Insulation: Low-capacitance Polypropylene (PP) compound engineered to minimize dielectric losses and withstand inverter voltage spikes.
• Bedding / Inner Layer: Compact core assembly optimized for smooth core glide and dynamic energy chain flexing.
• Screen: Tinned Copper Wire Braid (TCWB) providing high-density 360-degree electromagnetic compatibility (EMC) shielding.
• Outer Sheath: Heavy-duty, oil-, grease-, and abrasion-resistant Polyurethane (PUR) compound, flame retardant per IEC/EN 60332-1.
• Core Identification: Black cores with continuous white numbering + Green/Yellow protective earth conductor (including power + control pair configurations).
• Sheath Colour: Orange (RAL 2003 standard servo drive designation).

Applications

Servo Cables CP are engineered for dynamic interconnection between servo controllers, variable frequency drives, and electric drive motors across modern automated manufacturing plants and machine tool centers. Their low-capacitance PP insulation and tough PUR outer sheath ensure dependable service in C-tracks, robotic handling lines, and harsh industrial workshops exposed to chemical coolants and oils.

Typical installation environments include:

• Automated Drag Chains & Cable Tracks: Continuous linear and multi-axis travel on CNC machining centers, transfer lines, and pick-and-place gantries.
• Servo Drives & Frequency Inverters: Low-loss motor feed cables connecting servo converters to high-dynamic servo motors.
• Industrial Robotics & Automation Cells: Flexible wiring through articulated arms, automated assembly units, and packaging equipment.
• Harsh Machining & Wet Process Workshops: Machinery areas subjected to mineral cutting oils, lubricants, mechanical abrasion, and sub-zero factory conditions down to -50°C.

Specifications & Dimensions

The Servo Cables CP series covers versatile configurations including 4-core power assemblies and composite 4-core power plus 2-core control/brake pairs, with nominal power conductor cross-sections extending from 1.5mm² up to 70mm². Operating at a rated voltage of 0.6/1kV, the cable supports fixed installations from -50°C to +80°C and dynamic flexing installations from -40°C to +80°C, maintaining a tight minimum bending radius of 5× OD (fixed) and 7.5× OD (flexed). All conductor strand geometries, overall cable diameters, and nominal weights strictly align with Siemens 6FX8008+ and EN 60811-404 manufacturing guidelines.

Standards

Huadong Cable Group manufactures and batch-tests Servo Cables CP to ensure full compliance with international drive specifications and machine safety standards:

Design & Drive Standards: Siemens Standard 6FX8008+, EN 60811-404 (Oil and Chemical Resistance)
Flame Retardancy: IEC/EN 60332-1 (Self-extinguishing)
Voltage Rating (Uo/U): 0.6/1kV
Temperature Spectrum: Fixed: -50°C to +80°C; Flexed/Installation: -40°C to +80°C
Regulatory Compliance: CE Marked, Low Voltage Directive 2014/35/EU, RoHS Directive 2015/65/EU, REACH EC 1907/2006, Halogen-Free

Frequently Asked Questions

Q: Why is Polypropylene (PP) insulation selected over standard PVC in Servo Cables CP?
A: Polypropylene (PP) exhibits a significantly lower dielectric constant and lower mutual capacitance than PVC, minimizing capacitive leakage currents and preventing steep voltage reflection spikes (dV/dt) from damaging servo motor windings.

Q: What is the purpose of the 4+2 core construction in servo motor cabling?
A: The 4+2 composite construction integrates the 3 main power phases and earth conductor together with an individually shielded 2-core control pair for holding brake control or thermal sensor feedback within a single compact cable.

Q: What are the minimum bending radius limits for Servo Cables CP in continuous energy chains?
A: The cable requires a minimum bending radius of 5 times the overall diameter (5× OD) for fixed installations and 7.5 times the overall diameter (7.5× OD) during continuous mobile flexing inside dynamic drag chains.

Q: What payment terms does Huadong Cable accept for international industrial export orders?
A: We provide flexible international commercial terms including Telegraphic Transfer (T/T) and 100% Irrevocable Letter of Credit (L/C) at sight for machinery OEMs and engineering contractors.

Why Choose Huadong Cable for Servo Cables CP?

Huadong Cable Group manufactures Servo Cables CP in strict compliance with Siemens Standard 6FX8008+ and EN 60811-404 specifications, backed by certified IEC/EN 60332-1 flame-retardant safety validation. To ensure maximum flex life and minimal conductor resistance under constant high-speed acceleration, we utilize high-purity oxygen-free Class 6 fine-stranded bare copper conductors. When combined with low-capacitance PP insulation, a high-density Tinned Copper Wire Braid (TCWB) screen, and an abrasion-resistant orange PUR outer jacket, the cable provides exceptional electromagnetic compatibility (EMC) and mechanical flexibility across operating temperatures from -50°C to +80°C, resisting dynamic fatigue and oil degradation through millions of drag chain cycles.

With more than 20 years of precision cable engineering expertise, Huadong Cable Group operates fully automated multi-core stranding, braiding, and PUR extrusion lines certified to ISO 9001, CE, RoHS, and REACH protocols. By eliminating commercial middlemen, we offer competitive direct factory pricing, 100% Mill Test Certificates (MTC) tested in accredited laboratories, custom continuous drum lengths on ISPM 15 export wooden reels, and seamless door-to-port logistics for automation integrators and CNC machinery builders worldwide.