Italiano
The products may undergo changes or may not correspond to you.
OKUMA Servo Drive
Brand: OKUMA -
Cat: Servo Drive
Code:BLIV-D100A
| Combination name | Availability | Price |
|---|---|---|
BL-IV Brushless Servo Drive – OKUMA BLIV-D100A
The BLIV-D100A is a brushless servo drive (“BL-IV Brushless Servo Drive”) manufactured by OKUMA Corporation, belonging to the BL-IV (Brushless Series IV) drive family. It is documented as a component of OKUMA CNC systems — machining centers, lathes and grinding machines — equipped with the proprietary OSP control system. The D100A suffix in the part number indicates a rated output current of 100 A, positioning this module as a high-torque drive for the main spindle or a primary axis. It manages the speed, current and torque regulation loops for OKUMA brushless servo motors and interfaces with the power section of the machine’s electrical cabinet.
The BL-IV drive is the power electronic unit that converts the digital torque and speed references from the OSP CNC controller into controlled currents for the brushless servo motor, maintaining position, speed and torque with the highest precision throughout each machining cycle. A failure in this drive results in complete loss of control over the associated axis or spindle: the machine halts on alarm and cannot resume production until the unit is repaired or replaced.
OKUMA Corporation, founded in 1898 in Nagoya, Japan, is one of the world’s leading manufacturers of CNC machine tools (lathes, machining centers, grinding machines) and is the only manufacturer in the world that designs and produces in-house the complete technology chain: machine, CNC control (OSP), drives and motors. Products in the BL-IV series are legacy / discontinued: available only as used, NOS surplus, or through specialist repair.
Main Technical Specifications
| Type | BL-IV brushless servo drive (BL-IV Brushless Servo Drive) |
| Part number | BLIV-D100A (BLIVD100A) |
| Brand | OKUMA Corporation |
| Known application | OKUMA CNC machining centers, lathes and grinding machines with OSP control |
| Function | Speed, current and torque regulation for brushless servo motor (main axis or spindle) |
| Rated output current | ~100 A (from D100A designation) |
| Supply voltage | DC bus ~300–600 V |
| Control signal | OSP proprietary digital serial interface / analogue reference |
| Feedback | Encoder / resolver from OKUMA brushless servo motor |
| Logic supply voltages | ±15 V and +5 V DC |
| Interfaces / connectors | OKUMA proprietary multi-pin connectors; power terminal block |
| Weight | ~3–8 kg |
| Dimensions | ~200–400 mm |
| Production status | Legacy / discontinued — used/NOS surplus/repair only |
