TEBAOFLEX Li9Y11YC11Y is a halogen-free 0.6/1 kV double-screened composite polyurethane (PUR) drag-chain servo motor cable built for multi-axis CNC machining centers, linear gantry robots, automated assembly cells, and high-speed packaging drives. It integrates four extra-fine Class 6 low-capacitance 9Y power conductors (U, V, W, PE) and two individually foil-and-braid screened control pairs (for 24 V DC motor holding brake and PTC / KTY84 / PT1000 thermal feedback) inside an overall ≥ 85% tinned-copper EMC braid and an oil-resistant 11YM1 PUR jacket.
1. Application Scope & Servo / VFD Cable Comparison
Consolidating PWM motor supply, holding brake, and stator temperature monitoring into one shielded composite cable cuts energy-chain cross-section, connector count, and installation labor across European servo drive architectures. Low-permittivity 9Y polypropylene insulation minimizes capacitive leakage currents while synthetic machining coolants and hydraulic oils are repelled by the crosslinked-feel ether PUR outer sheath.
- Multi-Axis CNC Machine Tools & Milling Gantries: Continuous drag-chain flexing at
7.5 × ODin chip-laden enclosures exposed to ester cutting oils, emulsions, and metal swarf. - Cartesian Handling Portals & Palletizing Robots: High-acceleration X-Y-Z linear axes feeding synchronous AC servo motors with integrated
24 V DCspring-applied brakes. - Woodworking, Forming & Automated Packaging Lines: Single-run composite servo motor interconnects compatible with circular M23, M40, and cabinet EMC gland terminations.
| TEBAOFLEX Servo / Drive Series | Circuit Architecture | Conductor & Insulation | Outer Sheath | Primary Motion Duty |
|---|---|---|---|---|
| Li9Y11YC11Y (This Page) | 4G Power + 2 Shielded Pairs + Overall Braid | Class 6 Cu / 9Y PP | Halogen-Free 11YM1 PUR | Continuous drag-chain composite servo + brake |
| Li9Y(C)C11Y Feedback | Multipair Signal + Supply + Overall Braid | Class 6 Cu / 9Y PP | Halogen-Free 11YM1 PUR | Matching incremental/EnDat/HIPERFACE encoder chain |
| 2YSLCY-JB 0.6/1 kV | 4G Power / 3+3PE + Foil & Braid | Class 5 Cu / 2Y PE | Transparent/Black PVC | Fixed & occasional-flex VFD motor feeders |
| 2XSLCYK-J 0.6/1 kV | 4G / 3+3PE + Al Foil & Cu Braid | Class 5 Cu / 2X XLPE | UV-Resistant Black PVC | 90°C high-ampacity fixed industrial VFD drives |
Drag-Chain vs Torsion Boundary: Li9Y11YC11Y is engineered with short concentric lay pitches for linear planar flexing in guided energy chains (minimum 7.5 × OD). For 6-axis articulated robot wrists experiencing ±180°/m axial torsion, specify a dedicated torsion-rated robotic servo dress-pack construction.
2. Cable Construction (Dual-Screened Composite Servo Architecture)
As shown in the stepped cable cutaway, power and control elements are dielectrically and electromagnetically isolated inside a compact circular cross-section:
0.75 mm² to 35 mm², delivering millions of alternating flex cycles without copper work-hardening.0.6/1 kV (U1, V2, W3 black numbered or brown/black/grey + green/yellow protective earth PE), minimizing PWM cable charging currents.2 × (2 × 0.34 mm²) up to 2 × (2 × 1.5 mm²), rated 300/500 V) insulated in PP/TPE, each wrapped in aluminium-laminated polyester foil plus an individual tinned-copper wire braid and 11Y sub-jacket/wrap for error-free brake and thermistor signaling.7.5 × OD.3. Technical & Electrical Characteristics
Electrical, thermal, and dynamic drag-chain operating ratings for TEBAOFLEX Li9Y11YC11Y composite PUR servo cables:
| Parameter | Engineering Rating | Reference Standard / Test Condition |
|---|---|---|
| Rated Voltage (Power / Control) | 0.6/1 kV (Power) | 300/500 V (Pairs) | UL/cUL AWM 1000 V 80°C machine-tool style compatible on request |
| AC Test Voltage (50 Hz, 5 min) | 4,000 V AC (Power) | 2,000 V AC (Pairs) | Core-to-core and core-to-screen dielectric verification |
| Continuous Flexing Temp. | -30°C to +80°C | Guided energy chains and reciprocating machine gantries |
| Fixed Installation Temp. | -40°C to +80°C | Max. short-circuit conductor temperature: +150°C (up to 5 s) |
| Minimum Bending Radius | 7.5 × OD (flexing) | 4 × OD (fixed) | 10 × OD recommended for power sizes ≥ 16 mm² in long gliding chains |
| Chain Speed & Acceleration | Up to 300 m/min | Up to 30 m/s² | Self-supporting horizontal drag-chain travel (≤ 10 m) |
| Halogen-Free & Flame Rating | Halogen-free, self-extinguishing | IEC 60754-1 / EN 50267-2-1; flame per IEC 60332-1-2 / EN 60332-1-2 |
| Oil & Coolant Resistance | Severe industrial machine-tool grade | DIN EN 60811-404 mineral oil, synthetic ester & emulsion resistant |
4. Specification & SKU Schedule (4G0.75 to 4G35 + 2 Screened Pairs)
Standard European composite servo motor configurations combining four 0.6/1 kV power cores (3 phases + PE) with two individually foil-and-braid screened brake and thermal sensor pairs:
| Part No. / SKU | Composite Configuration (mm²) | Nominal Outer OD (mm) | Min. Chain Bend Radius 7.5×OD (mm) | Copper Index (kg/km) | 30°C Free-Air Power Ampacity (A) | Approx. Total Weight (kg/km) |
|---|---|---|---|---|---|---|
SRV1K-4G075-2P034 | 4 G 0.75 + 2 × (2 × 0.34)C | 11.0 | 83 | 126 | 15 | 171 |
SRV1K-4G15-2P075 | 4 G 1.5 + 2 × (2 × 0.75)C | 13.4 | 101 | 178 | 21 | 245 |
SRV1K-4G25-2P075 | 4 G 2.5 + 2 × (2 × 0.75)C | 15.3 | 115 | 235 | 28 | 312 |
SRV1K-4G40-2P10 | 4 G 4.0 + 2 × (2 × 1.0)C | 17.2 | 129 | 324 | 38 | 425 |
SRV1K-4G60-2P10 | 4 G 6.0 + 2 × (2 × 1.0)C | 19.1 | 144 | 418 | 49 | 540 |
SRV1K-4G100-2P10 | 4 G 10 + 2 × (2 × 1.0)C | 23.4 | 176 | 624 | 67 | 804 |
SRV1K-4G160-2P15 | 4 G 16 + 2 × (2 × 1.5)C | 26.2 | 197 | 895 | 90 | 1,140 |
SRV1K-4G250-2P15 | 4 G 25 + 2 × (2 × 1.5)C | 29.8 | 224 | 1,285 | 121 | 1,760 |
SRV1K-4G350-2P15 | 4 G 35 + 2 × (2 × 1.5)C | 32.4 | 243 | 1,748 | 149 | 2,570 |
Single-pair brake variants (4G + (2 × 1.0)C), one-cable digital DSL/HIPERFACE hybrid servo builds, and 50 mm² power cross-sections are manufactured to OEM drive pinouts. Explore our Industrial & Control Cables catalog for matching encoder, fieldbus, and drag-chain control cables.
5. Frequently Asked Questions (Composite PUR Servo Cable Engineering)
What does the German VDE material code Li9Y11YC11Y represent on a composite servo cable?
In DIN VDE material coding, Li denotes extra-flexible multi-strand copper conductors (Class 6), 9Y specifies low-capacitance polypropylene (PP) insulation on the motor power cores, 11Y identifies thermoplastic polyurethane/elastomer layers over the individually screened control pairs, C designates the concentric tinned-copper wire braid EMC screen, and the final 11Y specifies the abrasion- and oil-resistant polyurethane (PUR) outer sheath.
Why are the two auxiliary control pairs individually screened inside the overall tinned-copper braid?
Modern IGBT and SiC servo drives switch PWM motor phases at 4-16 kHz with steep voltage rise times (dV/dt). Without individual foil-and-braid screening around the 24 V DC holding-brake pair and the PTC/KTY84/PT1000 stator thermal sensor pair, capacitive crosstalk from the 0.6/1 kV motor phases induces false over-temperature trips and drive faults.
Why is 9Y polypropylene core insulation superior to PVC for long servo motor cable runs?
Polypropylene (9Y) has a relative permittivity near 2.2-2.3 compared with 3.5-4.5 for plasticized PVC. Lower core-to-core and core-to-shield capacitance reduces capacitive charging current spikes at every PWM switching edge, lowering servo amplifier heat dissipation and allowing longer motor cable lengths before output chokes are required.
How should both the pair screens and the overall EMC braid be terminated at the servo drive and motor connector?
Strip the outer PUR jacket at the 360° EMC cable gland or circular M23/M40 servo connector clamp so the overall tinned-copper braid bonds concentrically around its full circumference. Terminate the inner pair screens to the designated drive shield clamp or connector shield housing per the servo drive manufacturer’s grounding diagram, avoiding long twisted pigtails.
Specify Li9Y11YC11Y Composite PUR Servo Motor Cable
Send your servo drive platform, motor power cross-section, brake/sensor pair configuration, drag-chain bend radius, travel length, and jacket colour (Grey RAL 7001 or Orange RAL 2003) for datasheet verification and pricing.
