Source：Shengda Yu Published：2020-06-17 Clicks：8046
1. In order to maintain the static position of the mechanical device, some systems need the motor to provide a larger output torque and stop for a long time. If the self-locking function of the servo is used, it will often cause the motor to overheat or the amplifier to overload. In this case, we should choose the motor with electromagnetic brake.
2. The transmission devices and lifting devices of some systems require that the servo motor can stop as soon as possible, when the power supply is cut off suddenly, the server cannot decelerate the motor without regenerative braking, and at the same time, the mechanical inertia of the system is large. at this time, the choice of dynamic brake should be based on the weight of the load, the working speed of the motor and so on.
3. Some servo motors have built-in regenerative braking unit, but when regenerative braking is frequent, the DC bus voltage may be too high, so it is necessary to be equipped with regenerative braking resistance. Whether the regenerative braking resistance needs to be equipped separately, and how large the regenerative braking resistance is, please refer to the instructions for the use of the corresponding samples. It should be noted that the braking times on the general sample list are the data of the motor when there is no load. In the actual selection, the inertia ratio should be calculated according to the load inertia of the system and the motor inertia on the sample, and then the braking times / (inertia ratio + 1) on the sample list, so that the data obtained is the allowable braking times.
The above are the matters that need to be paid attention to when maintaining the servo motor.