MIV08-1-B5 Okuma
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The Okuma MIV08-1-B5 is an inverter unit from the MIV Servo Drives series, featuring a single axis and a continuous rated capacity of 7.5 kW or 10 hp. It is designed for use with BL and PREX motor types and operates with a DC bus supply of 300 VDC and control power of 24 VDC. This unit measures 100 mm wide, 380 mm tall, and 325 mm deep, and is equipped with servo, encoder, and converter link interfaces.
Internal Product Review
The MIV08-1-B5 is an Okuma inverter unit configured for single-axis BL/PREX motor applications. A 300 VDC DC bus supply and 24 VDC control power support stable integration in servo systems. The 7.5 kW continuous capacity makes this drive a strong choice for dependable machine performance.
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Product Description:
The MIV08-1-B5 is an inverter unit built by Okuma for the MIV Servo Drives series. Installed between the plant’s DC bus and a matched servo motor, the device modulates power so the controller can execute precise velocity, position, and torque commands. By converting bus energy into a form that the motor phases can accept, it provides the power interface required in automated machining centers, loaders, and other CNC equipment. The inverter also coordinates motor operation with the machine controller, allowing commanded motion to remain synchronized with the broader production sequence.
This drive handles one mechanical axis and uses dedicated control logic, feedback channels, and a power stage. Continuous output is rated at 7.5 kW (10 hp), indicating the electrical power it can deliver to the motor windings without derating. Internal bus capacitors accept a stabilized supply of 300 VDC, while service electronics and I/O are powered from an external 24 VDC source that keeps diagnostics active when main power is removed. Addressing on the serial backbone is set with a 5-bit controller ID switch, allowing up to 32 inverters to coexist without address conflicts. Dedicated link interfaces for servo commands, incremental encoder feedback, and converter diagnostics support synchronized exchanges of position data and status words.
Its cabinet footprint is kept narrow at 100 mm in width, which eases high-density mounting alongside other MIV modules. The chassis extends 325 mm in depth and rises 380 mm in height, providing space for heat sinks and bus bars while still fitting standard 19-inch enclosures. Compatibility with Okuma’s BL/PREX permanent-magnet motors allows the unit to use low-inertia rotor dynamics for fast spindle and feed-axis movements. Mechanical alignment tabs support consistent placement within the cabinet. Keyed terminal blocks help prevent wiring errors and preserve signal integrity across the power, feedback, and control connections.
