Product Description:

The MIV0102-1-B1 is an inverter module produced by Okuma for the MIV Servo Drives series. Within a multi-axis machining center or automated cell, the unit converts DC bus energy into controlled AC output so that servo and spindle motors follow precise speed and torque commands issued by the CNC. Installed in the drive cabinet, it forms the power interface between the controller and the machine axes and supports coordinated motion across the system. This role lets the controller regulate acceleration, deceleration, and load response through a dedicated power stage rather than sending motor current directly from the CNC.

The drive is split into two independent power stages. On the L side, the continuous output is rated at 1.33 hp or 1.0 kW, which suits small feed axes that need accurate velocity control without excessive thermal load. The M side increases that capacity to 2.67 hp or 2.0 kW, providing more output for heavier slide motion or an auxiliary spindle with higher inertia. Parameter storage and basic motion algorithms reside in a Standard ROM 1 device, which keeps core operating data in the module. Each axis channel is monitored by current and voltage sensors tied directly to the gate drivers, so overloads can be detected before the power semiconductors reach their operating limits.

Higher-level diagnostics and regenerative control loops are executed on the ICB1 inverter board. That board also manages vector modulation for either a BL motor or a PREX motor through the same control platform, allowing the module to support different motor types within the same drive family. When used as an Okuma Inverter Unit, the module exchanges status data over the proprietary drive link, including torque demand, alarm codes, and thermal information for upstream control functions. The separation between the two power channels and the control board allows the module to supervise output behavior while maintaining communication with the rest of the drive system.