Product Description:

The MIV0103-1-B5 inverter module is produced by Okuma for the MIV Servo Drives series. It is intended to operate as a compact axis power stage within CNC machine tools, accepting DC link energy from the common supply and issuing modulated three-phase outputs to servo motors. In an automation cell this drive closes the loop between the numerical controller and the mechanical load, delivering the precise torque and velocity commands required for coordinated positioning, threading, and contour cutting tasks.

Channel-specific ratings distinguish the lower and medium capacity outputs. The unit’s L side is matched to a BL motor and is supervised by the ICB1 control board that handles current detection, gate timing, and fault logic. That channel delivers up to 1.33 hp, equivalent to 1.0 kW, allowing light feed axes or auxiliary spindles to run from the same frame. Horsepower is a mechanical value, and the kilowatt figure aligns the rating with common thermal breaker limits and cable sizing tables. The separate path reserved for heavy motion provides a continuous output of 4 hp, furnishing extra torque reserve during acceleration, deceleration, and high-friction cuts while still keeping junction temperatures inside the design envelope.

The drive’s heavier axis channel, identified as the M side, is specified for a continuous power of 3.0 kW, a value that pairs well with mid-frame actuators on turning or milling centers. Because the assembly is categorized by Okuma as an Okuma Inverter Unit, it can occupy a standard slot in the electrical cabinet and share the DC bus with adjacent supplies and regenerative resistors. When coupled to a PREX motor it exploits high magnetic flux density to achieve faster accelerations, so a single inverter can address both precision and throughput objectives without enlarging the footprint.