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OKUMA Servo Drive
Brand: OKUMA -
Code:MIV0103-1-B1
| Combination name | Availability | Price |
|---|---|---|
Axis Servo Drive Module – OKUMA MIV0103-1-B1
The MIV0103-1-B1 is a digital axis servo drive module (“Axis Servo Drive Module”) manufactured by OKUMA, belonging to the MIV (Motor Inverter) drive family used in OKUMA CNC machining centres and lathes equipped with the OSP (Open System Platform) control. The main catalogue part number is MIV01031B1. The module converts the DC bus voltage from the main power supply unit into three-phase current for the axis brushless servo motor, receiving position and speed references from the CNC via the OKUMA proprietary bus. The module may be available in revision variants indicated by the alphanumeric suffix (e.g. B1).
The axis servo drive is the component that translates the CNC’s digital commands into motor drive current, closing the position, speed and current control loops in real time. A failure renders the corresponding axis uncontrollable: the machine triggers an alarm and machining stops immediately. The dynamic response of the drive is critical for positioning accuracy, surface finish quality, and cycle repeatability.
OKUMA Corporation is a Japanese CNC machine tool manufacturer founded in 1898, headquartered in Oguchi, Aichi, Japan. It is one of the few manufacturers in the world to develop both machine tools and its own proprietary CNC system (OSP — Open System Platform) in-house, ensuring full vertical integration between mechanics, drives and control electronics. Components of the MIV series are legacy / discontinued: available exclusively as used, surplus, or through specialist repair services.
Main Technical Specifications
| Type | Digital axis servo drive module (Axis Servo Drive Module) |
| Part number | MIV0103-1-B1 (MIV01031B1) |
| Brand | OKUMA Corporation (Japan) |
| Known application | OKUMA CNC machining centres and lathes with OSP (Open System Platform) control |
| Function | Axis servo control: position, speed and current loops for brushless motor |
| Input supply | DC bus from OKUMA power supply unit (typical ~280–600 V DC) |
| Output | Three-phase PWM for OKUMA brushless servo motor |
| Control interface | OKUMA OSP proprietary bus; on-board connectors |
| Feedback | Encoder / resolver from OKUMA axis servo motor |
| Weight | ~1.5–4.0 kg |
| Dimensions | ~150–350 mm |
| Production status | Legacy / discontinued — used/surplus/repair only |
