VACII D8 Okuma
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The VACII D8 spindle drive features a VACII-D8 drive model, a transistor module rated at 150 A 600 V or 150 A 450 V (six in quantity), and a 5 A 250 V fuse (four in quantity). Part of the VAC Spindle Drives series by Okuma, it includes a VAC board II + VAC card 1 control PCB and a diode module rated at 75 A 800 V.
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Product Description:
The VACII D8 model by Okuma is a precision Spindle Drive. It is mainly used for to control the high-speed spindle motors in various industrial automation settings. The drive is designed to be used on 3-phase AC power source. The control system uses an integrated PCB that provides fault detection and status monitoring through multiple LEDs.
The LEDs in VACII D8 spindle drive show normal conditions in green and fault alerts in red or blinking signals. The drive offers reliable power management and high-speed switching using IGBT unit. It includes main circuit semiconductor devices such as transistors and fast-recovery diodes. The drive unit supports modular construction for ease of servicing and upgrade. A standardized power connection block is placed in this drive for hassle-free cable connections. The VACII D8 spindle drive features a removable control PCB and power unit for quick replacement. It includes multiple inspection points like IGBT modules, gate circuits, and diode assemblies. The fuses protect the circuit and have defined ratings and replacement steps. The system is capable of detecting faults like overvoltage, undervoltage, overcurrent, motor hunting, and loss of phase.
The VACII D8 spindle drive typically uses a high-speed encoder, including an optical or magnetic encoder with 1024 or 2048 PPR resolution. The drive is designed for indoor use within controlled environments free from dust and oil mist. It can operate in humidity up to 85% RH without condensation. It tolerates industrial vibration levels up to 4.9 m/s² during operation. The cooling is achieved either through natural air convection or an internal fan system. The chassis is sealed to protect internal electronics from contaminants and heat. It is reliable in demanding industrial settings and offers consistent performance over long duty cycles.
