MDU-08-SA

The MDU-08-SA by Okuma from the MDU Servo Drives series is engineered to deliver high-precision control in demanding industrial automation environments. This servo drive accepts a rated input of DC 283V–325V and outputs AC 200V (3-phase) variable frequency power with a rated output power of 6.57 kVA. It features a rated current of 4.3 A, a fine step angle of 1.8°, and a holding torque of 0.85 Nm for accurate positioning and consistent performance. The drive’s robust design supports a short-circuit current rating of 50 kA RMS SYM, ensuring reliable operation under heavy load conditions. With a compact footprint and proven reliability, the MDU-08-SA integrates seamlessly within modern CNC and robotic systems.

Featuring advanced electrical and mechanical specifications, the MDU-08-SA offers exceptional technical capability for complex motion control tasks. The drive’s phase resistance of 1.2 Ohm and phase inductance of 3.9 mH are optimized for stable current flow and minimal electrical noise. Dual-axis operation is supported through its Axis Configuration: Axis SB, Unit U2, enabling synchronized multi-axis coordination. A comprehensive suite of connectors and ports—including CHG, RES, E1S, EPG, PGC, PGL, and RS-232—provides versatile interfacing options for encoder feedback, power signal exchange, and system diagnostics. The internal architecture delivers smooth torque output even during rapid acceleration or deceleration sequences, maximizing throughput and product quality.

Operationally, the MDU-08-SA excels in precision, reliability, and ease of maintenance. Its fine step angle of 1.8° and holding torque of 0.85 Nm guarantee consistent motor locking and minimal backlash during standstill, essential for high-accuracy machining. The drive’s thermal management supports continuous operation within the specified rated input range of DC 283V–325V, while the 6.57 kVA power rating ensures sufficient headroom for peak dynamic loads. Built-in protections against overcurrent, overvoltage, and short-circuit events safeguard both the drive and connected motors. Advanced diagnostic feedback via the RS-232 port and status indicators simplifies troubleshooting, reducing unplanned downtime and maintenance costs.

Integration of the MDU-08-SA into existing automation systems is straightforward, thanks to its industry-standard mounting and electrical interfaces. The drive’s AC 200V output and versatile connectors and ports enable compatibility with a wide range of servo motors and encoders. Ideal applications include CNC milling, high-speed cutting, and multi-axis robotic assembly where precise torque control and rapid response are critical. Engineers can leverage the drive’s dual-axis capability (Axis SB and Unit U2) to implement complex synchronized motion profiles, making the MDU-08-SA a versatile solution for modern manufacturing challenges.