Overview and Key Specifications
The Festo NEBM-M23G15-EH-7.5-Q7N-S1LEG21 (manufacturer part number 8190886) is a pre-assembled hybrid motor cable designed for servo drive systems. It combines power and signal lines in a single shielded cable, simplifying wiring and reducing installation time. The cable is 7.5 meters long and weighs 1493 g. It is rated for DC operating voltages up to 850 V and AC voltages up to 630 V, with a current rating of 11.7 A at 40 °C. The cable is designed for use in energy chains, offering a bending radius of 48 mm for fixed installation and 90 mm for flexible applications.
Connector Design and Wiring
One end of the cable features a round M23x1 hybrid socket with 15 pins (12 occupied) and a straight cable outlet. The connection uses snap-locking for secure mounting. The other end is a straight cable outlet with a Sub-D connector and open end, providing 21 pins (12 occupied) for control-side integration. This hybrid configuration allows both power and feedback signals to be transmitted through a single cable, reducing clutter and potential connection points. The cable is designed to meet EN 61984 standards and includes a shield for electromagnetic interference protection.
Material and Environmental Suitability
The cable sheath is made of TPE-U (PUR), which is halogen-free and RoHS-compliant. The insulating sheath material is PP. The cable has a gray sheath with a diameter of 12 mm (±0.3 mm). It is rated for ambient temperatures from -40 °C to 90 °C for fixed installation and -25 °C to 80 °C for flexible use. The cable is suitable for low corrosion stress environments (CRC 1) and meets LABS (PWIS) conformity VDMA24364-B2-L. The degree of protection is IP20 for the open end and IP67 for the mounted connector, ensuring reliability in demanding industrial conditions.
Installation and Integration Considerations
When integrating this cable into a servo drive system, consider the following:
- Bending radius: For fixed installations, maintain a minimum bending radius of 48 mm; for flexible installations, use a radius of at least 90 mm to prevent cable damage.
- Connector mating: The M23x1 connector uses snap-locking, which provides a secure connection without requiring additional tools. Ensure the mating connector is compatible with the 15-pin layout.
- Shielding: The cable is shielded, so proper grounding of the shield at both ends is essential for optimal EMI performance.
- Environmental ratings: The IP67 rating applies only when the connector is properly mounted. The open end is IP20, so protect it from moisture and dust until connected.
Performance and Compliance
This cable is designed for high-speed operations and demanding industrial environments. It has a surge resistance of 6 kV and overvoltage category III, making it suitable for applications with potential voltage transients. The cable is CE marked according to the EU Low Voltage and RoHS directives, and UKCA marked per UK RoHS and electrical equipment regulations. The cable design includes 4 x 0.75 mm² power conductors plus additional signal pairs, with wire ends terminated with cable end sleeves for reliable connections. The product is configurable, allowing customization to meet specific system requirements.