1. Inspection before the trial operation of the servo motor First, check the servo motor before the trial operation to ensure that there is no damage to the outside of the motor; TO-220 Transistor Outline Package is a type of in-line package often used in high-power transistors and small and medium-sized integrated circuits.
It not only plays the role of mounting, fixing, sealing, protecting the chip and enhancing the electrothermal performance, but also connects to the pins of the package shell with wires through the contacts on the chip, and these pins pass through the wires on the printed circuit board. Connect with other devices to realize the connection between the internal chip and the external circuit.Because the chip must be isolated from the outside world to prevent impurities in the air from corroding the chip circuit and causing electrical performance degradation. On the other hand, the packaged chip is also easier to install and transport.
TO-220 package is a kind of in-line package that is often used for fast recovery diodes. TO-220AC represents a single tube with only two pins and only one chip inside.
The diodes are packaged in TO-220AC and can be used in switch mode power supplies (SMPS), power factor correction (PFC), engine drives, photovoltaic inverters, uninterruptible power supplies, wind engines, train traction systems, electric vehicles and other fields.
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Second, check the fixed parts of the servo motor to ensure that all parts are connected tightly;
Third, check the shaft of the servo motor to ensure that the shaft rotates smoothly (note: the tightness of the shaft of the servo motor with oil seal is a normal state)
Fourth, check the connector of the servo motor encoder and the power connector to ensure that their wiring is correct and the connection is tight to prevent the motor from being burned out.
Fifth, check whether the installation of each component is good, and whether other factors such as heat dissipation conditions, dust, oil, water, etc. have an impact on the motor.
Second, the tests that should be done during trial operation First, no-load trial operation, first let the motor have no load, only connect the motor for trial operation, to ensure that the motor is running normally, without abnormal noise and other bad phenomena, and then connect the load components .
Second, before the load is running, make sure that the mechanical parts are connected reliably, and confirm that the servo motor action and the brake action work normally. (When using a servo motor with a brake, before confirming the operation of the brake, take measures to prevent the machine from falling naturally or vibration caused by external force.)
Third, confirm whether the operation of the servo motor meets the mechanical specifications and requirements.
Fourth, ensure that the emergency stop device is effective and normal in order to prevent abnormality during operation. (In case of an accident, the operation can be stopped immediately when an accident occurs)
3. Inspections to be done when the servo motor is running First, whether the running direction is correct, if the direction is reversed, it may damage your machine.
Second, whether it can effectively and flexibly control the servo motor.
Third, when the servo motor is running, whether there will be abnormal sound, or jitter and other undesirable phenomena.
Fourth, check whether the temperature is normal during the operation of the motor and whether it is within the normal temperature range.
Fourth, the common fault judgment and maintenance methods of the servo motor Common problems One, the servo motor does not start.
Possible causes: 1. The power supply is not connected; 2. The motor is stuck inside; 3. The encoder signal line is not connected; 4. The overload is blocked; 5. The selection is incorrect; Fault.
Common problem 2. The motor has no load (meaning the motor is overloaded)
Possible causes: 1. The load is overloaded; 2. The drive parameter setting is unreasonable; 3. The UVW output is connected incorrectly; 4. The internal coil is burned; Whether the electric potential is normal, if the back EMF is low, the rotor magnetic cylinder of the motor has been demagnetized, and the rotor needs to be replaced)
Common problem 3: Abnormal noise of the servo motor may be caused by: 1. Poor mechanical installation, such as: loose motor screws, misalignment of the shaft center of the coupling, or loss of balance of the coupling. 2. If there is abnormal noise in the bearing, check the sound and vibration conditions near the bearing; 3. Signal interference, such as: the input signal line does not meet the specifications, the length of the input signal line does not meet, the encoder signal is disturbed, etc. 4. Electromagnetic aspects, such as motor overload operation, unbalanced three-phase current or phase loss.
Common problem 4: During the operation of the motor, the motor temperature is too high.
Possible causes: 1. The ambient temperature is too high; 2. Too much dust on the surface; 3. The load is overloaded; 4. The harmonics of the power supply are too large; .