LDU II

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The LDU II servo drive ensures a rotor speed of 100-600 rpm, supports high-purity N2 and Ar inert gases, and offers degassing efficiency of ≥35% when the inlet hydrogen content exceeds 0.30 ml/100g-Al. Part of the BL Servo Drives series by Okuma, it operates with a power supply of 380V AC 50Hz and ≤10KVA.

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Product Description:

The LDU II Control card connects to the BLIII-D board and controls the power for CNC equipment. Two of the most important things that this Okuma-made unit does in servo drives and motion control systems are keep the power stable and handle the voltage. Its design is based on meeting the power needs of brushless DC motors in CNC machines.

The 100µF, 680µF, and 1500µF capacitors on the LDU II control card can keep the power stable. It manages the 24V and 5V DC outputs that motor control circuits need. The unit's main transformer makes sure that the power conversion works well. The control card keeps the voltage stable and sends power to the BLIII-D CONTROL BOARD TYPE D. A Xilinx Spartan FPGA (XC2S50-5PQ208) is used to handle signals in the system, which is needed for motion control. The BL3D (201D) Processor/Controller oversees controlling the motors and processing moving signals. Using inductors and capacitors to filter power makes the system work better. The unit's control board and motor drive can share data through a CN11 (20-pin) connector that is fixed on the edge. You can connect to data and power lines through extra ports.

The LDU II control card can be used for BLDC motor control, CNC servo drives, and spindle and axis drive systems. For industrial automation motors to work correctly, power levels must stay steady, and the control card is an important part of that process. The power control unit in Okuma MIV Series Drive Units makes sure that the power is always on, which lets the motion be executed perfectly. Its construction keeps the electrical performance stable, so power fluctuations don't happen in motor-driven applications. This card works well in CNC settings where precise voltage control is important.

Capacitor Ratings
100µF, 680µF, 1500µF
Degassing Efficiency
≥35% when inlet hydrogen content >0.30 ml/100g-Al
FPGA Model
Xilinx Spartan XC2S50-5PQ208
Hydrogen Content After Degassing
≤0.22 ml/100g
Inert Gases
High-purity N2, High-purity Ar
Launder Shell Surface Temperature
≤60°C
Lining Life
≥12 months
Main Transformer
Power conversion for motor control
Maximum Temperature Of Molten Aluminum
750°C
Motion Controller
BL3D (201D) processor
Power Filtering Components
Inductors and capacitors
Power Supply
380V AC 50Hz, ≤10KVA
Rotor Speed
100-600 rpm
Voltage Regulation
24V and 5V DC

Frequently Asked Questions about LDU II:

Q: How does the main transformer improve power conversion?

A: The main transformer converts input power to regulated outputs for CNC motors. It ensures efficient voltage transformation that prevents power losses.

Q: Why is a Xilinx Spartan FPGA used in LDU II?

A: The FPGA processes control signals that optimize motor performance. It enables real-time motion adjustments for precise CNC drive control.

Q: Do power filtering components reduce electrical noise?

A: Yes, inductors and capacitors minimize interference in power signals. This improves stability in motor control circuits and prevents performance issues.

Q: Why does LDU II include a BL3D (201D) processor?

A: The processor handles motion control operations for CNC drives. It ensures accurate motor coordination and efficient drive communication.

Q: How does the CN11 connector enhance system integration?

A: The 20-pin CN11 connector facilitates stable data and power connections. It enables seamless communication between the control board and motor drive.


Internal Product Review

  • ‘‘The LDU II ensures stable voltage regulation that enhances CNC motor control precision. It integrates a Xilinx Spartan FPGA for advanced signal processing that optimizes drive performance. The unit features high-capacity power filtering components that reduce electrical noise in motion systems. Its CN11 (20-pin) connector supports reliable communication with motor drives. The LDU II is an essential component for CNC applications that demand precise power stabilization.’’

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