The operation of permanent magnet motors must strictly follow the specifications to ensure stable operation and service life of the equipment. The specific requirements are as follows:
1. Pre-Startup Preparation
Electrical Inspection: Confirm that the power supply voltage and frequency match the rated parameters of the motor, that the wiring is secure and not loose, and that the grounding is reliable. Use an insulation resistance meter to check the winding insulation resistance. The resistance must comply with the manufacturer's specifications to avoid short-circuit risks.
Mechanical Inspection: Manually rotate the rotor to ensure there is no binding or abnormal friction, and that the bearings are properly lubricated. When connecting transmission components (such as couplings and pulleys), calibrate the coaxiality to avoid excessive vibration during operation.
Environmental Verification: Check the temperature, humidity, and dust concentration of the motor installation environment to ensure that the protection level meets the requirements (for example, IP54 requires dust intrusion prevention) and that the ventilation and cooling system is functioning properly.
2. Operational Monitoring
Parameter Monitoring: Observe motor current and voltage in real time to ensure they do not exceed rated values. Use a thermometer or an infrared thermometer to monitor stator, rotor, and bearing temperatures. Immediately shut down the machine for investigation if the temperature rise rate is abnormal.
Status Check: Monitor operating noise. During normal operation of a permanent magnet motor, a uniform electromagnetic sound should be present. Any unusual noise or increased vibration may indicate bearing wear, rotor dynamic balancing failure, or sudden load changes, requiring prompt shutdown and maintenance.
Load Management: Avoid prolonged overload operation. For cyclical load scenarios, configure an overload protection device to prevent permanent magnet demagnetization due to high temperatures or winding damage due to overheating.
3. Maintenance Specifications
Regular Lubrication: Regrease the bearings according to the instructions, using a moderate amount (usually 1/3 to 2/3 of the bearing cavity volume) to avoid excessive grease, which can lead to poor heat dissipation.
Cleaning and Maintenance: After shutdown, remove dust from the housing and heat dissipation holes to prevent accumulation that affects heat dissipation. Humid environments require regular drying to prevent degradation of insulation performance.
Tightening and Inspection: Check the wiring terminals and mounting bolts for looseness. Perform insulation aging inspection annually and repair or replace winding insulation if necessary.
4. Safety Instructions
Power-off Operations: Before maintenance, always disconnect the power supply, display a "Do Not Close" warning sign, and discharge any residual charge on capacitors to prevent electric shock or accidental startup.
Protective Measures: Wear insulated tools when operating. Protective covers should be installed on hot areas (such as the motor housing) to prevent burns and contact injuries.
Abnormal Handling: In the event of a sudden power outage, tripping, or protective device activation, first investigate the cause of the fault and do not forcefully close the circuit breaker.
In addition, within the Ouruian permanent magnet motor for sale lineup, different models of permanent magnet motors (such as servo motors and variable frequency motors) may have specific operating requirements. Strictly follow the manufacturer's instructions to ensure that operating specifications match the equipment's performance.
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