VACII D22
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The Okuma VACII D22 is part of the VAC Spindle Drives series and functions as a VAC II Spindle Drive Unit. It features a VAC Board II + VAC Card 1 control PCB and a D22A power supply unit, alongside CN1 and CN3 signal connectors. Additionally, it is equipped with an ALMRST alarm reset switch.
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Product Description:
The VACII D22 Spindle Drive from the VAC spindle drive series of Okuma is an industrial spindle drive used for industrial automation purposes and applications. It has a power stage based on IGBT enabling fast switching and motor control. A 3-phase AC power supply is utilized in the drive with stable energy input during the operating period.
The VACII D22 spindle drive is utilized to power a 22kW spindle motor. The spindle drive uses a high-frequency encoder feedback to enable fine speed control. The standard encoder is either a pulse encoder or an absolute encoder of high resolution. The Encoder signals provide proper synchronization between the motor and the drive system. Its modular internal structure allows fast access to key components during service. The presence of diagnostic LEDs on the control board indicates operating and fault states clearly. The semiconductor devices like transistors and diodes are embedded in the main circuit for reliability. The thermal stability in VACII D22 spindle drive is provided through the forced air cooling mechanism by the use of built-in fans. The drive has replaceable software and configuration files that will help in an update via ROM units. The modular control PCB and power modules are replaceable, supporting minimal downtime during repairs.
The terminal blocks of VACII D22 spindle drive are rugged and have adequate dimensions to work with secure wiring. There are optical fiber ports to allow high communication speed and check signal integrity. It is designed to support 20 to 85 % non-condensing humidity. The system works up to 1000 meters height above sea level. It tolerates levels of vibration in the industrial environments of up to 0.5G across frequency ranges. It has overcurrent, overvoltage, phase loss, and shorted circuit protection. These have in-built fuses that protect the internal circuit and contain easy instructions on how to replace these fuses.
Frequently Asked Questions about VACII D22:
Q: What encoder feedback types are used in VACII D22 spindle drive?
A: The VACII D22 spindle drive supports high-resolution pulse or absolute encoders, enabling precise spindle synchronization and stable speed control during operation.
Q: How does VACII D22 spindle drive regulate motor switching performance?
A: The VACII D22 spindle drive uses IGBT-based power modules that deliver fast switching frequencies, reducing thermal stress and enhancing motor torque responsiveness.
Q: What cooling strategy is applied in VACII D22 spindle drive systems?
A: The VACII D22 spindle drive features forced air cooling via integrated fans, ensuring reliable thermal management for continuous 22 kW spindle motor operation.
Q: What diagnostic interface is integrated in VACII D22 spindle drive?
A: The VACII D22 spindle drive includes LED indicators on the control board, providing real-time fault detection and operational status during runtime and startup phases.
Q: How is VACII D22 spindle drive maintained in field service conditions?
A: The VACII D22 spindle drive has modular architecture with replaceable control PCBs and ROM units, allowing easy updates and rapid part swap with minimal downtime.
