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OKUMA Servo Drive
Brand: OKUMA -
Code:MIV0204A-1-B5
| Combination name | Availability | Price |
|---|---|---|
Servo Axis Drive Module – OKUMA MIV0204A-1-B5
The MIV0204A-1-B5 is a servo axis amplifier module (“Servo Amplifier Module”) manufactured by OKUMA Corporation, forming part of the axis control chain in OKUMA machining centres and lathes equipped with the OSP (Open System Platform) CNC control. The module handles speed and torque regulation of the servo axis motor, interfacing with the CNC unit via the proprietary OKUMA serial bus and with the drive power stage. The MIV designation identifies the OKUMA servo amplifier family; the suffix A-1-B5 specifies the power and hardware configuration variant. This is not a CPU module or spindle drive, but a dedicated amplifier for a single machine axis.
The servo axis drive is the electronic module that converts position and speed commands from the CNC into drive current for the axis motor: it closes the speed and torque loop, ensuring positioning accuracy and dynamic stiffness during machining. In the event of failure the module triggers an alarm that immediately stops the controlled axis — and often the entire machine — making any cutting operation impossible until the drive is replaced or repaired.
OKUMA Corporation is a Japanese machine tool manufacturer founded in 1898, headquartered in Oguchi, Aichi, Japan. It is one of the few manufacturers worldwide to integrate machine tool, CNC control (OSP series) and servo drives entirely in-house, guaranteeing full system compatibility. Products in the MIV family are legacy / discontinued: no longer available new through the official OKUMA network and sourced exclusively as used, surplus or via specialist repair.
Main Technical Specifications
| Type | Servo axis amplifier module (Servo Amplifier Module) |
| Part number | MIV0204A-1-B5 (MIV0204A1B5) |
| Brand | OKUMA Corporation |
| Known application | OKUMA machining centres and lathes with OSP CNC control (e.g. OSP-U100M/L, OSP-P200M/L, OSP-U200M/L) |
| Function | Servo axis motor speed and torque regulation – position/speed control loop closure |
| Input voltage | 200–240 V AC three-phase (typical MIV family) |
| CNC interface | Proprietary OKUMA serial bus (OSP); digital link to axis control module |
| Feedback | Incremental / absolute encoder from OKUMA servo axis motor |
| Connectors | Proprietary OKUMA multi-pin connectors; power terminal block for motor and DC bus connection |
| Weight | ~2–5 kg |
| Dimensions | ~150–300 × 250–400 mm |
| Production status | Legacy / discontinued — available as used, surplus or via specialist repair only |
