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Fuji Electric BU90-2E
SKU: BU90-2E
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Description
The Fuji Electric BU90-2E is an external dynamic braking unit (DBU) for the FRENIC-MEGA (G2) variable frequency drive (VFD). For drives above built-in braking transistor capacity, this unit manages regenerative energy from the motor to an external braking resistor, enabling controlled deceleration of large, high-inertia loads.
Monitors the DC bus voltage and activates the braking resistor circuit when voltage rises above a safe threshold — during rapid deceleration or when the load overhauling the motor.
Required for large cranes, hoists, winders, and high-inertia fans. Must be paired with a compatible external braking resistor. Genuine Fuji Electric OEM accessory.
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Buying Options
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Description
The Fuji Electric BU90-2E is an external dynamic braking unit (DBU) for the FRENIC-MEGA (G2) variable frequency drive (VFD). For drives above built-in braking transistor capacity, this unit manages regenerative energy from the motor to an external braking resistor, enabling controlled deceleration of large, high-inertia loads.
Monitors the DC bus voltage and activates the braking resistor circuit when voltage rises above a safe threshold — during rapid deceleration or when the load overhauling the motor.
Required for large cranes, hoists, winders, and high-inertia fans. Must be paired with a compatible external braking resistor. Genuine Fuji Electric OEM accessory.
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Documentation
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