MIV08-3-V1 Okuma
Wake Industrial LLC is not an authorized distributor of this product.
The Okuma MIV08-3-V1 is part of the MIV Servo Drives series and is designed as an inverter unit for motor capacities up to 7.5 kW. It operates with a DC bus supply of 300 VDC and requires a control power of 24 VDC. This unit features a 5-bit controller ID switch and weighs 7.3 kilograms.
Internal Product Review
The MIV08-3-V1 is an Okuma inverter unit well suited for 7.5 kW motor capacity and 24 VDC control power architectures. The 300 VDC DC bus supply and 11/7.5 kW compatible VAC output support stable servo drive integration in machine tool applications. A 1562 min⁻¹/V speed monitor scale is a strong advantage for precise feedback and dependable performance.
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Product Description:
The MIV08-3-V1 is an Okuma inverter unit in the MIV Servo Drives series. As a servo-drive component, it converts energy from the machine’s DC link into a regulated three-phase output for synchronous or induction motors in automated machine tools. This function allows the controller to command precise velocity and torque profiles for cutting heads, positioning axes, and spindles within Okuma machining centers. The inverter also works with other components in the associated motion-control platform to coordinate motor operation and exchange status information.
The drive supports an applicable motor capacity of 7.5 kW (10 hp) and has an 11/7.5 kW VAC output rating for dual-rated spindles. Its control electronics are energized by a dedicated 24 VDC rail, whereas the power stage draws energy from a DC bus maintained at 300 VDC. Two AC connector pins carry current through the inverter’s power connections, and the L-side VAC switch provides on-panel isolation during service. A speed-monitor jack produces a rotor-velocity signal scaled at 1562 rpm/V, allowing an external display or CNC feedback card to read the motor speed without additional scaling. Torque commands use a reference of 3 V, providing a consistent input level for drive response across multiple machine axes. These electrical connections separate control power, motor output, monitoring signals, and torque commands within the unit.
The resolver feedback channel terminates on a connector with 15 dedicated RES pins for excitation, sine-cosine return signals, and shielding. A front-mounted identification selector uses a 5-bit binary pattern, allowing the axis address to be set directly at the inverter. For loop tuning, the internal voltage regulator applies a gain of 1/42, supporting predictable phase-locked control when the inverter operates with matching units. The housing weighs 7.3 kg, which permits stable mounting without placing excessive load on the cabinet structure. An error display on the cabinet door reports protective conditions associated with the DC link, control supply, or thermal sensors, allowing the control system to prevent motion until normal operating conditions are restored.
