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OKUMA Servo Drive
Brand: OKUMA -
Cat: Servo Drive
Code:MIV01A-1-B5
| Combination name | Availability | Price |
|---|---|---|
Axis Servo Drive – OKUMA MIV01A-1-B5
The MIV01A-1-B5 is an axis servo drive module (“Motor Interface V”) manufactured by OKUMA Corporation, belonging to the proprietary MIV servo drive series. It is documented as a power and control unit for axis servo motors in OKUMA CNC machining centres and lathes equipped with the OSP (Open System Platform) control system. The module closes the position, velocity, and current loops, interfacing with the CNC unit via OKUMA’s proprietary bus. The suffix B5 identifies the hardware/firmware revision; the designation 01A indicates the power class (small-axis drive).
The servo drive is the component that translates position and velocity commands generated by the CNC into power currents for the axis servo motor: it simultaneously manages the position loop, the velocity loop, and the current loop, ensuring dimensional accuracy and dynamic response during machining. A servo drive failure renders the axis completely inoperative, triggers an axis alarm on the machine, and halts all machining operations until the module is replaced or repaired.
OKUMA Corporation is a Japanese manufacturer founded in 1898 in Nagoya, one of the few companies in the world to design CNC machine tools, numerical controls (OSP), and servo drives entirely in-house, ensuring full hardware/software integration. The modules in the MIV family belong to older generations of the OSP system and are legacy / discontinued: available only as used, surplus, or through specialist repair services.
Main Technical Specifications
| Type | Axis servo drive module (Motor Interface V – MIV) |
| Part number | MIV01A-1-B5 (MIV01A1B5) |
| Brand | OKUMA Corporation |
| Known application | OKUMA CNC machining centres and lathes with OSP (Open System Platform) control |
| Function | Axis servo motor drive – position, velocity, and current loop regulation |
| DC bus supply | ~270–300 V DC (typical OKUMA system) |
| Output rated current | ~1–5 A |
| Feedback | Encoder / resolver from axis servo motor |
| Interfaces | Proprietary OKUMA OSP bus, encoder/resolver connectors, power terminals |
| Revision / version | B5 variant (hardware/firmware revision) |
| Weight | ~1.5–3.5 kg |
| Dimensions | ~200–400 mm × 80–180 mm |
| Production status | Legacy / discontinued — used/surplus/repair only |
