MIV04A-1-B5 Okuma
Wake Industrial LLC is not an authorized distributor of this product.
The Okuma MIV04A-1-B5 is an inverter unit from the MIV Servo Drives series with a motor capacity of 4 kW and supports one axis. Its dimensions are 380 mm in height, 60 mm in width, and 295 mm in depth, with a weight of 5.0 kg. The drive operates with a control power of 24 VDC and a DC bus voltage of 300 VDC.
Internal Product Review
The MIV04A-1-B5 is an Okuma inverter unit designed for single-axis service with 4 kW motor capacity. A 24 VDC control supply and 300 VDC DC bus give the drive stable integration characteristics in servo systems. The 5-bit ID switch arrangement adds setup convenience, making the MIV04A-1-B5 a well-executed choice for compact machine control.
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Product Description:
The MIV04A-1-B5 inverter unit is produced by Okuma as part of the MIV Servo Drives series. Serving as a servo drive, it interfaces between a CNC controller and the matched servomotor, converting DC bus energy into a regulated, pulse-width-modulated output that manages speed and torque during machining or positioning cycles on Okuma machine tools. By coordinating motor feedback with commands from the control axis, it helps maintain accurate motion profiles in industrial automation cells. Its compact format also supports installation in control cabinets containing multiple drive modules.
Designed for single-axis applications, the unit supervises 1 motor channel, simplifying wiring and parameter allocation in multi-drive racks. Internal logic, I/O, and gate drivers are supplied by an external 24 VDC source, isolating the control electronics from the higher-energy power section. The power stage shares a common link voltage of 300 VDC, allowing several drives on the same bus to exchange regenerated energy without additional braking resistors. When paired with a compatible Okuma servomotor, the inverter can deliver up to 4 kW of continuous motor power, matching the spindle or feed-axis requirements commonly found on midsize lathes and machining centers. Despite this output capability, the module weighs only 5.0 kg, which reduces the load placed on the panel and its mounting hardware.
The unit has a front-panel width of 60 mm, an overall depth of 295 mm, and a height of 380 mm, supporting dense side-by-side placement when the cabinet provides adequate depth and ventilation clearance. Speed-reference scaling is fixed at 1562 rpm/V, enabling direct conversion between analog velocity commands and the corresponding motor speed in the drive parameters. Five ID switch bits allow individual address selection when several MIV drives share the same serial network. The M-side ID switches are set to All Off for this configuration. A 3 V peak-torque reference permits brief increases in motor current during cutting engagement or rapid acceleration.
