MIV15A-1-B5 Okuma
Wake Industrial LLC is not an authorized distributor of this product.
The Okuma MIV15A-1-B5 is an inverter unit from the MIV Servo Drives series, designed for 1-axis control with a rated continuous capacity of 15 kW. It operates with a 300 VDC DC bus input and 24 VDC control power, and features a peak torque monitor at 3 V. The unit weighs 11.2 kilograms and measures 380 mm in height, 150 mm in width, and 325 mm in depth.
Internal Product Review
The MIV15A-1-B5 is an Okuma inverter unit designed for 1-axis servo drive applications, with a rated continuous capacity of 15 kW. A 300 VDC DC bus input and 24 VDC control power support stable integration into machine drive systems. BL/PREX motor class compatibility makes the drive a strong choice for precise motion service.
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Product Description:
The MIV15A-1-B5 inverter unit is manufactured by Okuma and supplied within the MIV Servo Drives series. It is an AC servo drive section intended to regulate torque and speed on a single motor axis in machining centers and other automated stations. By converting power from the common 300 V intermediate bus into a controlled three-phase output, the unit interfaces directly with the BL/PREX class servo motors that Okuma uses for coordinated positioning tasks. This arrangement allows the drive to regulate motor operation while receiving commands from the machine control system.
This drive controls one motor axis because it has a single-axis configuration. Continuous output is limited to 15 kW (20 hp), so the inverter can sustain high-demand duty cycles on mid-frame spindles without derating. The power stage is fed from a shared DC link at 300 VDC, while internal gate logic and sensor circuits receive their own 24 V supply through the control connector. The 24 VDC control power allows the controller to remain active during machine emergency-stop events. A built-in tachometer interface scales motor speed feedback at 1562 rpm/V, allowing motion software to translate the analog monitor voltage directly into revolutions per minute for diagnostic and override functions.
The cabinet layout must accommodate a mass of 11.2 kg and an overall height of 380 mm. The unit also has a width of 150 mm and a depth of 325 mm, allowing it to occupy one slot in an Okuma drive stack alongside power-supply and regenerative modules. Logic is powered from an isolated 3.3 V rail, and sensor interfaces use a separate 5 V supply for improved noise immunity. A 5-bit controller ID switch assigns the node address on the internal fiber network, while torque feedback is referenced to peak output at 3 V. The M6 upper and M8 lower terminal screws secure the main bus conductors and motor leads, maintaining low-resistance connections during continuous spindle acceleration.
