Purpose-Built Connection for EMMT-ST and CMMT-ST
The Festo NEBM-M17G12-EH-2.5-Q6N-LE12 (part number 8181670) is a pre-assembled hybrid motor cable engineered to link EMMT-ST stepper motors with CMMT-ST servo drives. It consolidates power and feedback lines into a single 12-pin M17x0.75 hybrid socket at the field device end, while the control side terminates in an open end with cable end sleeves. This design simplifies wiring and reduces the risk of connection errors during installation.
The cable is built for reliable signal integrity. It includes full shielding to guard against electromagnetic interference, which is critical in industrial environments with high electrical noise. The cable sheath is made of TPE-U(PUR) with a PP insulating sheath, offering resistance to abrasion, chemicals, and moisture. The cable is halogen-free and RoHS-compliant, meeting EU and UK RoHS directives.
Electrical and Mechanical Specifications
Rated for DC operating voltages from 0 to 48 V and a current rating of 7.6 A at 40°C, the NEBM-M17G12-EH-2.5-Q6N-LE12 supports the typical power requirements of stepper motors in this class. It withstands surge voltages up to 1.5 kV and is classified under overvoltage category I. The cable design includes 4 x 0.5 mm² plus 2 x 0.5 mm² power conductors and 6 x 0.15 mm² signal conductors, with a nominal cross-section of 0.15 mm² for signal lines.
With a cable length of 2.5 m and a diameter of 10.5 mm (±0.3 mm), this cable offers flexibility in routing. It is suitable for energy chains, with a minimum bending radius of 42 mm for fixed installation and 78.75 mm for flexible installation. The ambient temperature range is -40°C to 90°C for fixed installation and -25°C to 80°C for flexible use, making it adaptable to various thermal conditions.
Environmental Protection and Compliance
When mounted, the connector achieves an IP67 degree of protection, ensuring resistance to dust ingress and temporary immersion in water. This makes the cable suitable for washdown applications or environments with high humidity. The cable is also LABS (PWIS) conformant to VDMA24364 zone III, which is important for paint shops and finishing lines where silicone-free materials are required.
The product is rated for corrosion resistance class 1 (low corrosion stress) and contamination level 3, indicating it can operate in typical industrial settings with moderate pollution. It is designed to meet EN 61984 standards for connectors, ensuring safety and performance.
Integration and Installation Considerations
Engineers should note that the cable is not labeled (without label holder), so proper identification must be managed during installation. The open-end connection allows for custom routing and termination, but requires careful attention to pin assignments. The connection pattern is specified as 00997531 for the field device end and 00997532 for the control side, which should be referenced during wiring.
The cable's suitability for energy chains makes it a good choice for moving applications, such as robotic arms or linear axes. Its flexible design and robust shielding help maintain signal integrity even under continuous motion. For procurement teams, the product weight of 365 g and the manufacturer ID 8181670 are useful for logistics and inventory management.
Practical Value for Automation Projects
Choosing the NEBM-M17G12-EH-2.5-Q6N-LE12 reduces the need for custom cable assemblies, saving time and minimizing potential failure points. Its hybrid design eliminates separate power and feedback cables, simplifying cable management and reducing space requirements in control cabinets. The high IP67 rating and wide temperature range make it a dependable choice for harsh production environments, while the halogen-free construction aligns with modern sustainability and safety requirements.
For engineers evaluating motion control systems, this cable provides a straightforward, tested solution that matches the performance characteristics of Festo's stepper drive ecosystem. Its specifications support reliable operation, and the cable's durability contributes to lower maintenance costs over the system's lifetime.