Product Description:

The BL-D30D belongs to the BL Servo Drives series manufactured by Okuma. This module functions as the axis-drive element in automated machine tools, accepting low-level command inputs and issuing regulated power to a matched servomotor. Its role is to translate numerical control instructions into precise motion, ensuring closed-loop positioning and velocity control across lines and CNC machining centers. Because it interfaces directly with OSP controllers, the unit integrates into multi-axis lathes, milling cells, and gantry systems where synchronized movement is required.

Electrically, the drive type is an AC servo drive, meaning it modulates three-phase AC output while maintaining feedback-based current loops. The power stage is rated for a continuous current of 30 A, giving it the capacity to energize medium-frame servomotors used on feed or spindle axes. Control electronics are supplied by ±15 VDC and 5 VDC, and these stable low-voltage rails power the analog amplifiers and logic circuits that shape the current waveform. For hardware safety, the high-voltage section trips at 430 VDC, disconnecting the motor when regenerative or overvoltage events exceed that threshold. Internal circuitry is energized from a 220 VAC single-phase PCB supply, allowing installation in cabinets that lack three-phase auxiliary power.

Motion commands arrive as analog signals from the ECP board, so the drive interprets ±10 V velocity references without additional converters. The control logic is tuned for OSP5000/5020 control schemes, enabling direct axis assignment through the CNC ladder. The zero reference is calibrated to 0.00 VDC, ensuring that drift does not produce unintended motor torque when the axis is idle. The unit is a 2nd Generation design and uses the EC controlled axis architecture with an absolute position encoder for closed-loop feedback. This arrangement supports stable operation during startup and quick recovery after power interruptions without homing routines.