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MIV0104-1-B2 Okuma

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The MIV0104-1-B2 is an Okuma inverter unit for 2-axis servo applications, supporting BL motor and PREX motor configurations. With 24 VDC control power and 300 VDC supply voltage, the drive offers dependable electrical integration and remains a strong choice for precise machine control.

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Product Description:

The MIV0104-1-B2 is an inverter unit manufactured by Okuma for the MIV Servo Drives series. Installed in multi-axis CNC machines, it converts energy from a shared DC bus into a controlled three-phase output for the connected servomotors. This conversion supports coordinated speed and torque regulation during cutting, positioning, and spindle operations. The shared-bus arrangement reduces the number of separate power conversion stages required within the machine cabinet while allowing each connected axis to respond to commands independently.

The drive supports two independently regulated motor channels within the same housing. Its supported power pairing is 1.8 kW × 4.0 kW, accommodating common feed-axis and spindle loads. The internal power stage operates from a shared bus voltage of 300 VDC, while the control electronics use an isolated 24 VDC auxiliary supply to maintain stable logic operation during bus fluctuations. The unit is compatible with BL motors and PREX motors, allowing it to operate with either motor family without changing the inverter platform. Drive commands and diagnostic signals pass through the ICB1 inverter control board, which manages communication and regulation for this power class. For machine configurations that divide mechanical work between opposite sides, the left-hand output channel is limited to 1.0 kW, or 1.33 hp.

The housing measures 380 × 100 × 325 mm, allowing two units to be installed side by side within a 200 mm rack bay. Its mass of 7.8 kg supports secure cabinet mounting while keeping the assembly manageable during installation. The enclosure anchors the heat sinks firmly to help limit movement caused by machine vibration. The module connects to axis amplifiers supplied with DC power by a regenerative converter, providing the controlled output needed by the associated motors. Its compact width helps preserve cabinet space for adjacent power, control, and communication modules. The inverter operates without external line reactors in the described servo power arrangement.

Applicable Motor Capacity
1.8 kW × 4.0 kW
Axis Count
2
Compatible Motor Type
BL motor, PREX motor
Control Power
24 VDC
Control ROM type
Standard ROM 2
Dimensions (h×w×d)
380 × 100 × 325 mm
Inverter control board type
ICB1
L side Capacity (hp)
1.33 hp
L side Capacity (kW)
1.0 kW
Product Type
Okuma Inverter Unit
Supply Voltage
300 VDC
Weight
7.8 kg

Frequently Asked Questions about MIV0104-1-B2:

Q: What motor capacity range is supported by the MIV0104-1-B2 servo drive?

A: The MIV0104-1-B2 supports motors with capacities between 1.8 kW and 4.0 kW.

Q: How many axes can the MIV0104-1-B2 servo drive manage?

A: This drive can control up to two axes independently.

Q: Which types of motors are compatible with the MIV0104-1-B2?

A: It is compatible with both BL motors and PREX motors.

Q: What is the required control power input for the MIV0104-1-B2?

A: The control power required for this unit is 24 VDC.

Q: What supply voltage is needed for the MIV0104-1-B2 drive?

A: The MIV0104-1-B2 operates with a supply voltage of 300 VDC.

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