Bonfiglioli BXTFC 63B-2 Asynchronous Brake Motor

Product Overview

The Bonfiglioli BXTFC 63B-2 is a three phase asynchronous brake motor with IP55 protection and a 24 VDC brake reference. The motor is designed for applications that require controlled stopping and holding in addition to normal running. The brake motor is used in conveyors, hoists, packaging equipment, and machinery where load holding or rapid stop is required. The unit should be selected according to power, speed, duty cycle, brake torque, mounting, and environment.

The motor forms part of a complete drive system that includes the control panel, brake supply, protective devices, transmission, and driven load. Correct installation and maintenance support reliable operation. The motor should be installed by qualified personnel and according to technical documentation. The nameplate data should be checked before connection to ensure compatibility with the supply and brake circuit.

Construction and Mechanical Design

The brake motor contains a stator, rotor, bearings, shaft, brake assembly, and terminal box. The brake is integrated with the motor and is released when the brake coil is energized. The IP55 enclosure provides protection against dust and water jets. The frame 63B-2 defines the mounting dimensions and shaft interface. The housing provides cooling surfaces and protection for internal parts.

Mechanical installation requires a rigid mounting base and correct alignment with the driven machine. Couplings, pulleys, and belts should be fitted without impact. Excessive belt tension or overhung load can reduce bearing life. The motor shaft should rotate freely when the brake is released. Fasteners should be tightened to the specified torque. Guards should protect rotating parts.

Brake Function and Electrical Connection

The brake coil reference 24 VDC must be matched to the available brake supply. The brake rectifier or control circuit must provide the correct voltage and release timing. The brake air gap should be checked according to technical requirements. The brake should release smoothly and engage without excessive impact. The brake torque must suit the load and stopping requirement.

The motor nameplate provides voltage, current, frequency, power, speed, and connection details. The supply and control system must match these values. Star or delta connection must be correct for the available voltage. Protective earth must be connected. The terminal box wiring should be secure and protected from strain. Cable glands should maintain the IP55 enclosure protection.

Installation and Commissioning

Before installation, the motor should be inspected for damage and the identification details should be checked. The shaft and mounting surfaces should be clean. Alignment with the driven machine should be verified. The brake supply should be checked. Guards should protect rotating parts. The installation should provide access for brake inspection and maintenance.

Commissioning should include checking brake release and engagement. Rotation direction, noise, vibration, current, and temperature should be checked. The brake should be tested without load where possible. Fasteners should be rechecked after initial operation. The motor should be run with the driven machine and the stopping behavior observed. Any abnormal condition should be corrected before full duty.

Operation and Monitoring

During operation, the motor should run smoothly within its rated values. Operators should monitor current, temperature, noise, and vibration. Excessive current can indicate overload or brake drag. High temperature can result from poor cooling, overload, or incorrect brake adjustment. Abnormal noise can indicate bearing wear or brake contact. The motor exterior should be kept clean.

The brake should engage and release correctly. If the brake does not release, the load may overheat or the motor may stall. If the brake does not hold, the load may move unexpectedly. Brake faults should be corrected before continuing operation. Protective devices should remain active. Load changes should be reviewed against the motor and brake rating.

Protection and Reliability

Reliability depends on correct electrical protection, alignment, cooling, and brake maintenance. Overload protection should be set according to the motor current. Short circuit protection must be provided by the installation. The motor should be protected from moisture, dust, and corrosive atmosphere. The IP55 enclosure should remain sealed. Brake components should be protected from oil and contamination.

If a fault occurs, the cause should be identified before restart. Repeated overload trips indicate a problem that should be corrected. Service work should be performed by qualified personnel. Opening the motor can affect bearings, seals, and brake adjustment. Replacement motors should match the frame, mounting, shaft, brake data, and electrical values.

Maintenance and Service

Maintenance should include periodic inspection of mounting, terminals, cooling, brake air gap, and running conditions. Dust and dirt should be removed from the frame. The terminal box should be checked for tightness. Brake linings and release mechanism should be inspected. Bearing noise should be monitored. Insulation resistance should be checked when required.

Before service, the motor must be isolated and secured. The motor should be allowed to cool. Cables should be labeled before disconnection. The brake should be checked according to technical requirements. After service, alignment, brake function, and rotation should be checked. The motor should be run briefly before return to full duty.

Integration and Selection Summary

The BXTFC 63B-2 brake motor can be integrated into conveyors, hoists, packaging equipment, and general industrial machinery. The final application determines mounting, protection, brake torque, control, and transmission. The motor should be selected as part of the complete drive system. The frame, shaft, and brake must match the driven equipment.

Selection should confirm the model BXTFC 63B-2, IP55 protection, 24 VDC brake reference, power, voltage, frequency, speed, mounting, shaft, and brake torque. The designer should verify compatibility with the supply, brake circuit, and driven machine. Documentation should be reviewed before installation.