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OKUMA A911-3072 Model POS2A E0351-263-022 Static Variable Frequency Drivers 3 Phase Power

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OKUMA A911-3072 Model POS2A E0351-263-022 Static Variable Frequency Drivers 3 Phase Power

Model Number : A911-3072 E0351-263-022

Certification : CE (LVD/EMC)、UL / cUL、RoHS、JIS

Place of Origin : Japan

MOQ : 1

Price : $2,800–$6,500

Payment Terms : L/C,D/A,D/P,T/T,Western Union

Delivery Time : 3-5Workdays

Packaging Details : Original Pakage

Product Name : Static Variable Frequency Driver,Frequency Inverter

Power Supply : 3 Phase AC 380-480V, 50/60Hz

Application : CNC Machine Tool, Industrial Automation

Quality : Factory Tested, Original Replacement Parts

Shipping Term : International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line

Freight Charge : For Industrial Equipment (E.G., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/Volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote

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OKUMA A911-3072 Model POS2A E0351-263-022 Static Variable Frequency Drivers 3 Phase Power

OKUMA A911-3072 Model POS2A E0351-263-022 Static Variable Frequency Drivers 3 Phase Power

OKUMA A911-3072, Model POS2A (E0351-263-022), is a 3-phase static variable frequency driver specially designed for OKUMA CNC machine tools. Adopting closed-loop vector control for spindle and supporting wide voltage range for global power grids, it features complete protection against overvoltage, overcurrent, overload and more, ensuring stable and reliable operation. It is mainly used for spindle drive in CNC lathes, machining centers and other equipment, making it an ideal choice for original replacement and machine maintenance.

Product Highlights

Original OKUMA dedicated drive, highly stable with OSP systems
Closed-loop vector control for spindle, with precise speed and strong cutting performance
Wide 3-phase voltage range, compatible with power grids in many overseas regions
Comprehensive protection functions for reliable operation and low failure rate
Standard original specification, easy for replacement and repair
Compact structure with forced air cooling, suitable for long-term CNC machine operation

Model and Specifications

Item	Details
Brand & Model	OKUMA Model: POS2A P/N: A911-3072 Code: E0351-263-022
Type	Static Variable Frequency Driver Spindle Servo Drive Unit
Power Supply	3 Phase AC 380-480V, 50/60Hz
Control Method	Closed-loop vector control with encoder/resolver feedback
Compatible System	OSP 700 / 7000 / 8000 Series
Application	Spindle drive for OKUMA CNC lathes & machining centers
Version	V3.0
Cooling	Forced air cooling
Protection Functions	Over-current, over-voltage, under-voltage, overload, overheat, short circuit protection

Application Area

CNC Lathe Spindle Drive
Machining Center Spindle Drive
CNC Grinding Machine Spindle Speed Control
Closed-loop Control for Spindle of Precision CNC Machine Tools
Servo Variable Frequency Drive for OKUMA OSP System

Frequently Asked Questions

Is this a general-purpose inverter?

No. It is a dedicated spindle servo drive for Okuma CNC machines, not for fans or pumps.

Can I plug and play directly?

No. You need to check version and parameters; some machines require motor matching.

How to fix AL-03 / AL-04 alarms?

AL-03 = overvoltage, AL-04 = undervoltage. Check 3-phase power, power supply unit and DC bus.

What causes AL-06 / AL-07 alarms?

Overcurrent, module failure, motor short circuit or cable grounding issue. Test insulation after power off.

What numbers should I provide for overseas orders?

Provide three codes: A911-3072, POS2A, E0351-263-022.

Can it replace other Okuma drives?

Only replaces the same POS2A model. Not compatible with MIV or BL series.

What to note for export shipping?

It is an industrial spare part. Declare as "OKUMA CNC Spindle Drive".

What are common repair parts?

Power board, drive module, IGBT, current sensor. Not recommended for customer self-repair.

Which machines does it fit?

Mainly for older Okuma lathes and machining centers with OSP700/7000/8000 systems.

Typical overseas repair lead time?

3-7 days for normal repairs; longer if parts are out of stock.

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OKUMA A911-3072 Model POS2A E0351-263-022 Static Variable Frequency Drivers 3 Phase Power Images

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OKUMA A911-3072 Model POS2A E0351-263-022 Static Variable Frequency Drivers 3 Phase Power

OKUMA A911-3072 Model POS2A E0351-263-022 Static Variable Frequency Drivers 3 Phase Power

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