MIV01-1-B3 Okuma
Wake Industrial LLC is not an authorized distributor of this product.
The Okuma MIV01-1-B3 is a servo drive from the MIV Servo Drives series, designed for use with a BL/PREX motor and supports a single axis. This Okuma inverter unit operates with 24 VDC control power and a 300 VDC DC bus supply, offering an L side capacity of 1.33 hp or 1.0 kW. The drive weighs 5.7 kilograms and measures 380 mm in height, 60 mm in width, and 325 mm in depth.
Internal Product Review
The MIV01-1-B3 is an Okuma inverter unit designed for BL/PREX motor service. With 24 VDC control power and a 300 VDC DC bus supply, the drive offers clean integration and stable energy handling for CNC servo systems.
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Product Description:
The MIV01-1-B3 is an inverter unit built by Okuma for the MIV Servo Drives series. Designed for BL/PREX servo motors, it converts energy from a shared DC bus into regulated three-phase voltage and current for precise motion control. The module occupies one cabinet slot and supports positioning duties in CNC machining centers, including feed axes that require controlled acceleration, deceleration, and holding torque. Its narrow housing conserves cabinet space while directing cooling air along neighboring power modules. The single-channel design also keeps motor regulation and fault monitoring within one compact unit.
The drive supervises 1 axis, so its internal regulator and current sensors are dedicated to one motor channel. The control electronics draw 24 VDC from the machine’s auxiliary supply, allowing the gate drivers and diagnostic indicators to remain powered when the main bus is de-energized. The power section receives energy from a shared 300 VDC bus, which permits neighboring inverters to exchange energy during regenerative braking. Its continuous output capacity is rated at 1.0 kW, making the unit suitable for compatible medium-frame BL/PREX servomotors used on machine feed axes. The housing has a frontal width of 60 mm, allowing multiple modules to be installed close together without occupying excessive panel space. Separate power and logic supplies also allow the control section to report operating conditions when high-voltage output is unavailable.
The chassis has a depth of 325 mm and a height of 380 mm, providing space for its power electronics while leaving access to the front terminals. Power and feedback connections at the XT1 terminal block use an M6 screw, while the XT2 control strip accepts smaller conductors under an M4 fastener. This separation helps keep low-voltage control wiring apart from the higher-current connections and provides orderly cable routing inside the cabinet. The aluminum frame weighs 5.7 kg and uses external fins to transfer heat to the cabinet airflow. Adequate clearance around the ventilation path helps prevent neighboring modules or wiring ducts from obstructing heat removal during continuous operation.
