Product Description:

The MIV0104-1-B1 is an inverter unit manufactured by Okuma as part of the MIV Servo Drives series. Designed for machine-tool applications, this first-generation servo drive distributes regulated DC power to paired inverters so connected BL and PREX motors can carry out commanded moves with the required torque and speed. Its role is to supply controlled power to the motor channels so feed axes can accelerate, decelerate, and hold speed with repeatable response during cutting cycles. By converting the plant’s rectified supply into controlled pulses, the unit supports closed-loop axis control in lathes, machining centers, and other automated equipment.

Internally, the inverter section operates from 300 VDC, while the logic circuits use a separate 24 VDC control supply to keep low-level signaling apart from the high-energy stage. The drive is factory wired for a 2-axis configuration, with the left channel rated at 1.0 kW and the right channel providing up to 4.0 kW, allowing simultaneous control of loads with different demands. This arrangement supports BL and PREX servo motors used across Okuma machines and lets the two channels serve different axis requirements within the same cabinet space. Motion commands and protective limits are handled by the ICB1 inverter control board, which coordinates output response for both channels during axis movement.

The enclosure is 325 mm deep, 100 mm wide, and 380 mm high, giving it a narrow vertical profile that fits into multi-drive racks without blocking airflow. With a mass of 7.8 kg, the unit remains compact enough for routine handling during service. The mechanical package keeps weight low while still providing the heat-sink volume needed for two power stages. The slim housing also leaves room for adjacent modules and cable routing in densely packed control cabinets. This layout helps keep internal components accessible once the unit is mounted in the cabinet.