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OKUMA Servo Drive
Brand: OKUMA -
Cat: Servo Drive
Code:MIV06A-1-B5
| Combination name | Availability | Price |
|---|---|---|
Axis Servo Drive – OKUMA MIV06A-1-B5
The MIV06A-1-B5 is an axis servo drive amplifier (“Axis Servo Drive Amplifier”) manufactured by OKUMA Corporation, a component of the axis control system in OKUMA CNC machining centres and lathes equipped with OSP (Open System Platform) control. The manufacturer part number is MIV06A-1-B5 (internal reference: MIV06A1B5). The module belongs to the MIV family of OKUMA servo drives and handles the current and velocity control loops for AC brushless servo motors. The designation “06” indicates the nominal current rating (~6 A continuous); “A1B5” identifies the circuit variant and I/O configuration.
The MIV06A-1-B5 servo drive is the module that converts position and velocity commands from the OKUMA CNC (OSP controller) into three-phase current for the axis servo motor: it closes the current loop in real time and ensures the dynamic response required to follow the machining profile with the demanded precision. If it fails, the controlled axis becomes unavailable, the machine raises an alarm and production stops; on multi-axis machining centres, a single failed drive can halt the entire production cell.
OKUMA Corporation is a Japanese manufacturer founded in 1898, one of the world leaders in CNC machine tools (lathes, machining centres, grinding machines) and proprietary control systems (OSP series). Unlike most builders, OKUMA designs and manufactures in-house the machine, the CNC controller, the motors, and the drives, ensuring a fully integrated and optimised system. Products in the MIV series are considered legacy / discontinued in their older versions, but spare parts and repairs are still supported through specialist service networks.
Main Technical Specifications
| Type | Axis servo drive amplifier (AC brushless) |
| Part number | MIV06A-1-B5 (MIV06A1B5) |
| Brand | OKUMA Corporation |
| Known application | OKUMA CNC machining centres and lathes with OSP control (e.g. OSP-U100M, OSP-P200, OSP-P300) |
| Function | AC servo motor axis drive – current and velocity loop closure |
| Nominal current | ~6 A (continuous); higher peak depending on variant |
| DC bus voltage | Supplied by OKUMA power supply module (typical 280–320 V DC bus) |
| Interfaces | Proprietary OKUMA connectors for encoder/resolver feedback + OSP serial bus |
| Mounting | OKUMA drive rack / cabinet (DIN rail or dedicated rack) |
| Weight | ~1.5–3.0 kg |
| Dimensions | ~150–250 mm H × 60–100 mm W |
| Production status | Legacy / discontinued — available as used, NOS or through specialist repair |
