Mitsubishi MR-J4-DU37KB-RJ Servo Drive Unit for MELSERVO MR-J4 Series

The Mitsubishi MR-J4-DU37KB-RJ (MR-J4-DU37KB-RJ) is an AC motion servo amplifier drive unit designed for high-performance motion control within the MELSERVO MR-J4 series. Equipped with high-speed SSCNET III/H communication capability, this drive unit ensures synchronized, reliable data transmission and precise motion coordination across industrial automation systems. It also provides backward compatibility with MR-J2S series SSCNET conversion units, facilitating streamlined retrofits and machine modernization. Engineered for dependable operation, the unit operates on a supply voltage of 200 to 240 V AC or 283 to 340 V DC with single-phase, three-phase, or direct current input. It delivers a rated output of 400 W (0.4 kW) with a rated current of 2.8 A. Built-in hardware includes an integrated dynamic brake and a regenerative braking resistor, alongside full compatibility with external safety units to protect machinery and personnel. Designed with an IP20 degree of protection, the drive operates in ambient temperatures ranging from 0 to +55 degrees Celsius. It is commonly deployed in automated assembly machines, packaging lines, and multi-axis positioning systems.