MIV04A-1 Okuma
Wake Industrial LLC is not an authorized distributor of this product.
The Okuma MIV04A-1 is an inverter unit from the MIV Servo Drives series, designed for use with BL/PREX motors and features a rated continuous capacity of 4.0 kW. It operates with a 24 VDC control power and 300 VDC DC bus supply. The unit measures 380 mm in height, 60 mm in width, 295 mm in depth, and weighs 5.0 kilograms.
Internal Product Review
The MIV04A-1 is an Okuma inverter unit with a 4.0 kW rated continuous capacity. A 24 VDC control power requirement and 300 VDC DC bus supply support clean integration in servo drive cabinets. Single-axis BL/PREX motor support makes this drive a strong fit for precise, streamlined machine control.
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Product Description:
The MIV04A-1 is an Okuma inverter unit in the MIV Servo Drives series and is intended for closed-loop motion control on CNC machining centers and related equipment. It serves as the interface between the CNC controller and a compatible servo motor, converting energy from the shared DC link into phase-modulated output that regulates speed and torque. Okuma configures the drive for a slave network role, allowing supervisory commands and diagnostic feedback to pass through a higher-level bus. A 5-bit controller ID switch supports maintenance identification and permits individual addressing for multiple drives on a common backplane.
The electrical section supports a bus feed of 300 VDC and requires separate 24 VDC control power for the logic, relays, and speed monitor circuit. The unit has a continuous output rating of 4.0 kW, providing power for rapid axis acceleration while limiting thermal rise. It controls one axis, which simplifies parameter allocation and motor cable routing within the cabinet. Analog feedback uses a speed monitor gradient of 1,562 min⁻¹/V, while a 3 V reference provides full-scale torque feedback for real-time load observation. The unit has a mass of 5.0 kg, which reduces the load placed on light vertical panel mounts. Its electrical interface is compatible with Okuma BL/PREX permanent-magnet motors used for controlled CNC motion.
The enclosure has a width of 60 mm, a depth of 295 mm, and a height of 380 mm. These proportions allow the drive to align with standard 19-inch subracks while leaving space for motor wiring, control connections, and airflow ducts. The aluminum chassis dissipates operating losses primarily through its narrow sidewalls, so the cabinet must provide an unobstructed thermal path around the module. The compact front profile also keeps the connection terminals and address selector accessible without requiring a wider panel bay. Because the drive operates as a network slave, bus timing remains under the control of the supervisory device rather than the inverter unit.
