Bonfiglioli BN 80 B6 FD 3-Phase Motor

The Bonfiglioli BN 80 B6 FD 3-Phase Motor is an industrial asynchronous motor intended for compatible drive systems. It is identified by the BN 80 B6 FD model reference. The 80 frame is a compact size within the Bonfiglioli motor range, and the B6 designation indicates a six pole configuration, which corresponds to a lower speed than a four pole motor.

Six pole motors are used where lower speed and higher torque per frame size are required. The FD reference describes a configuration detail that should be confirmed against the motor documentation.

Frame and Pole Configuration

The frame 80 designation defines the mechanical interface, shaft dimensions, and approximate power range. The six pole configuration corresponds to a synchronous speed of about 1000 rpm at 50 Hz and about 1200 rpm at 60 Hz. The actual rated speed is slightly lower because of slip.

The motor should not be exposed to loads beyond its specified capacity. Misalignment, excessive vibration, and incorrect voltage can affect bearings, windings, and insulation. The machine design should provide adequate support and protection.

Nameplate Review and Compatibility

The nameplate supplies the rated voltage, frequency, current, power factor, speed, and connection method. These values should be compared with the supply and with the driven machine. If the motor is controlled by a drive, the motor data should be entered into the drive and the protection settings reviewed.

Compatibility includes the mounting flange, shaft dimensions, and coupling arrangement. If the motor is part of a geared drive, the gearbox interface should be checked.

Mechanical Installation

The motor should be mounted on a rigid structure that can support its weight and torque. The mounting surface should be clean and flat. Fasteners should be tightened to the specified values. The motor should not be distorted by uneven mounting surfaces or excessive bolt force.

Shaft alignment should be checked carefully. Couplings should be aligned within the limits allowed by the coupling and motor design. Impact on the shaft during installation should be avoided.

Electrical Connection

Electrical connection should be performed by qualified personnel following the site electrical code. Supply voltage, frequency, and winding connection must match the motor nameplate. Protective earth should be connected according to the installation requirements.

Cable sizes should be selected for current and voltage drop. Cable entries and glands should maintain the enclosure protection. The motor should be protected against short circuit and overload.

Commissioning

Before the first run, the motor should be inspected for correct mounting, secure connections, and free rotation. The motor should be uncoupled from the load where practical to confirm the direction of rotation. After coupling, the machine should be run at low load and observed for current, vibration, noise, and temperature.

Commissioning records should include the motor reference, nameplate data, connection details, and test results.

Maintenance and Troubleshooting

Routine maintenance should include checking mounting bolts, couplings, cables, and ventilation. The motor should be kept clean and free from contamination that could affect cooling. Bearing noise and vibration should be monitored.

If the motor overheats, the user should review load, duty cycle, ambient temperature, and ventilation. If the motor runs noisily, alignment, bearings, and coupling should be checked. If the motor does not start, supply, control, and protection should be reviewed.

Application Value

The BN 80 B6 FD motor supports rotary drive power in compatible machinery. It can be applied in industrial applications where a compact six pole motor fits the design. The actual performance depends on correct selection, mounting, electrical connection, and maintenance.

Summary

The Bonfiglioli BN 80 B6 FD 3-Phase Motor is intended for compatible industrial drive applications. Correct nameplate verification, mounting, alignment, electrical connection, commissioning, and maintenance are essential.