The servo motor has high noise

Phenomenon: After the servo motor is installed on the equipment and enabled, if there is obvious noise from the motor.

terms of settlement:

1. First, enable the motor under no-load conditions and observe if there is a similar noise. If there is no obvious noise under no-load conditions, it is highly likely that it is related to the settings of gain and inertia ratio parameters or the installation and stiffness of the equipment. Then, proceed to step 2; If there is the same noise when unloaded, it may be a problem with the driver or motor. You can replace the motor and driver separately for testing.

2. Confirm whether the inertia ratio is correct and whether the rigidity level is reasonable. Inertia ratio is the basis for adjusting gain parameters, and inertia identification function or combined calculation should be used to set approximately correct inertia ratio parameters; Reasonable rigidity levels should be set based on the stiffness of the load. Generally, loads with lower stiffness, such as synchronous belts, should have a lower rigidity level. It is recommended that the rigidity be lower than 12. Setting a higher rigidity level may cause the load to vibrate, the motor to hiss, and even cause collisions. For loads with higher rigidity, such as lead screws, a higher rigidity level can be set. However, if the rigidity level is higher, it may also cause the motor to hiss, and the rigidity level should be gradually increased. If there is a hissing sound from the motor in both position and speed modes after confirming the correct inertia ratio and gradually reducing the rigidity level, proceed to step 3.

3. Confirm if there are any issues with the installation of the equipment. For example, checking whether the synchronous belt is too tight or too loose, or comparing whether similar problems exist in devices of the same type. If only one device has a similar problem, the driver and motor can be cross replaced to investigate whether it is an electrical or mechanical problem with the equipment.

If the problem of motor hissing noise cannot be solved by testing in sequence or cross combination according to the above steps, a servo upper computer can be used to collect position, speed, and current wave forms to confirm the source of motor hissing noise, and then combined with P03-26 parameters to reduce the current loop gain for further analysis and testing.