MIV0404A-1-B5 Okuma
Wake Industrial LLC is not an authorized distributor of this product.
The Okuma MIV0404A-1-B5 is a second generation inverter unit from the MIV Servo Drives series with a bus voltage of 300 VDC and a control voltage of 24 VDC. It supports BL Motor and PREX Motor types and has an axis count of 2, with both L-side and M-side rated for 4.0 kW capacity. The inverter measures 380 mm in height, 60 mm in width, 295 mm in depth, and weighs 5.5 kg.
Internal Product Review
The MIV0404A-1-B5 is an Okuma inverter unit in the MIV Servo Drives series with a clean, application-ready design. Two-axis support and BL Motor / PREX Motor compatibility make the unit especially attractive for coordinated servo applications. Matched 4.0 kW capacity on the L side and M side stands out as a strong feature for balanced drive performance.
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Product Description:
The MIV0404A-1-B5 belongs to the MIV Servo Drives series manufactured by Okuma. It is an inverter unit that works with compatible motion controllers to regulate motor torque and speed on machining centers and related automation. Within a single enclosure, the drive contains power electronics and control circuits that coordinate two independent servo axes. This arrangement supports synchronized movement of paired tool or feed motors in high-precision applications while reducing the number of separate drive modules required in the control cabinet.
The drive supervises two axes, so one module can command the left and right sides of a dual-channel machine section. Power enters through a DC link rated at 300 VDC, while low-level logic operates from a separate 24 VDC control rail. The separate supplies help protect control signals from disturbances caused by changing motor loads. The L-side power stage is rated at 4.0 kW, providing the continuous motoring and regenerative capacity available to the first connected motor. The M-side has the same power capacity, allowing balanced operation across both controlled axes. The housing measures 60 mm wide and 295 mm deep, allowing multiple units to be installed on one backplate without requiring an unusually deep enclosure. Its narrow profile also leaves more lateral cabinet space for adjacent power and control components.
The power interface accommodates a BL Motor or a PREX Motor, supporting standard brushless motors and high-torque PREX designs. The unit has a mass of 5.5 kg, which supports secure mounting without placing excessive load on the cabinet structure. Its overall height is 380 mm, leaving space along the upper edge for ventilation openings and cable clearance. The Second Generation design incorporates updated gate drivers and faster fault diagnostics than earlier models. Field wiring terminates at the Xt1 terminal, which uses an M6 screw for a secure power connection. Feedback wiring connects to the separate Xt2L and Xt2M terminal blocks, and each of those blocks uses M4 screws. The separate feedback terminals correspond to the two controlled axes and help keep their signal connections organized inside the cabinet.
