MIV04-1-B3 Okuma
Wake Industrial LLC is not an authorized distributor of this product.
The Okuma MIV04-1-B3 is part of the MIV Servo Drives series and is designed as an inverter unit for BL/PREX motors with a capacity of 4 kW. It operates with a DC bus supply of 300 VDC and a 24 VDC control supply, supporting a single axis. The drive measures 380 mm in height, 60 mm in width, 325 mm in depth, and weighs 5.7 kg.
Internal Product Review
The MIV04-1-B3 is an Okuma inverter unit configured for single-axis BL/PREX servo applications. A 300 VDC DC bus supply and 24 VDC control supply support clean integration and stable drive operation in CNC systems. Support for 4 kW motor capacity makes this model a strong choice for precise servo performance.
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Product Description:
The MIV04-1-B3 belongs to the MIV Servo Drives series produced by Okuma. It is an inverter unit that conditions DC-bus power for a BL/PREX servomotor. Installed inside an Okuma CNC cabinet, it forms the power interface between the motion controller and motor. The drive regulates current flow and reports operating status through dedicated servo, encoder, and converter links to maintain synchronized industrial motion.
This drive supports an applicable motor capacity of 4 kW (5.3 hp), providing sufficient output for mid-frame feed axes and compact spindle duties. The drive controls 1 axis, so its switching devices, current sensors, and logic channels are assigned to a single motor. This arrangement simplifies parameter setup and keeps the control architecture focused on one motion channel. A DC interface rated at 300 VDC connects the unit to the shared bus supplied by upstream rectifiers or regenerative converters. Internal control electronics receive power from an external 24 VDC supply, which keeps gate drivers and diagnostic circuits operational when the main bus is de-energized. The enclosure measures 60 mm across its mounting face, allowing multiple axes to be arranged in a compact control cabinet. Motor feedback and command signals travel over the specified servo, encoder, and converter peripheral links, which match the pinout used by Okuma BL/PREX motors.
The housing weighs 5.7 kg, reducing the load on vertical control-panel brackets and simplifying secure mounting. Its overall depth is 325 mm, while its height is 380 mm. These dimensions suit standard machine-tool enclosures while leaving space for cable routing and cooling airflow. A front-mounted 5-bit controller ID switch provides 32 unique address values, allowing multiple inverters to share a common fiber-optic or discrete serial bus without address conflicts. The drive reads the switch setting only during power-up, preventing an accidental address change from disrupting communication while the unit is operating.
