Product Description:

The MIV0203-1-B3 inverter unit is part of the MIV Servo Drives series from Okuma. It works as an interface between the shared DC bus and individual servo axes, supplying pulse-width-modulated power that enables precise speed, torque, and position control on lathes, milling machines, and other CNC installations. Within an automation cabinet, the unit pairs with dedicated axis amplifiers to coordinate multi-motor movement and spindle functions, forming a central element in Okuma’s motion platform for metal-cutting equipment.

Field technicians will see Okuma branding on the front plate, and the internal logic section is governed by the ICB1 inverter control board. The drive divides its output into two channels: the L side supports loads up to 2.67 hp (rated at 2.0 kW) while the M side is scaled for applications reaching 4 hp. These ratings reference the mechanical power that can be delivered to a connected motor when the corresponding channel is run at nominal current and frequency. The split arrangement allows a designer to host a smaller feed axis and a medium-sized spindle on one frame, saving panel space and simplifying wiring compared with separate single-axis inverters.

The second output channel carries a continuous capacity of 3.0 kW, letting it drive moderate-duty spindles without an external booster. Compatibility with BL motor and PREX motor families lets machine builders choose either conventional synchronous servos or Okuma’s high-density permanent-magnet units on the same power stage. Because the unit is delivered inside the MIV Servo Drives architecture, its regenerative braking circuits, parameter structure, and feedback connectors match the rest of the series, permitting quick replacement and unified diagnostics across multi-axis machining centers.