VACB D8-B Okuma
Wake Industrial LLC is not an authorized distributor of this product.
The Okuma VACB D8-B is part of the VAC Spindle Drives series and features the VAC-BOARD-II control PCB. It is equipped with a power supply unit model D8A, main capacitors rated at 2200 μF 450 WVDC, and dual SMP32 3.2A fuses per D8 unit. The control power transformer operates at 200V primary voltage.
Internal Product Review
The Okuma VACB D8‑B is a spindle drive module for CNC machine tools. It features LED alarm indicators and supports encoder feedback via magnetic or optical interfaces with U‑V‑W motor terminals. It’s commonly used in VAC series spindle systems on OSP-controlled machining centers.
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Product Description:
The Okuma VACB D8-B is a spindle drive module designed to control spindle motors in CNC machine tools and it features a sturdy metal housing with a top mounted fuse panel and signal connector layout for power and alarm interfacing. It integrates both control and power electronics within a compact form and Okuma supplies this module for use in its CNC machining platforms and for industrial automation applications.
The VACB D8-B Drive offers a power board and a control PCB with analog or optical interface options depending on system configuration and it supports built in resolver or feedback from an encoder. It accepts U, V, W motor supply plus N and P terminals for control and it features protective fuses that are rated at 5 amperes and 32 amperes. This module's front panel provides LED indicators for RUN and multiple alarm states labeled A, B, C, D and its signal LED mapping shows modes 1 through 6 and alarm codes such as OC, UVP and OLP. It can be mounted via rear keyhole slots and includes a cooling fan assembly and transformer coils visible when the cover is removed and its control PCB permits connection to magnetic or optical encoders.
In this VACB D8-B Drive the volume and switch trimmers are accessible for motor tuning and it supports DC bus charge monitoring and EMC filtering. It supports 300 A class power for high‑torque spindle applications and it functions at around 480 V three phase power supply. This module's internal cooling design can accommodate oil cooled or air cooled implementations and its dimensions and mounting hardware comply with Okuma machining center standards.
