What should be noted in the use of permanent magnet dc motor
Release time：2018-3-13 15:00:35 Number of clicks：492
One, the use of permanent magnet dc speed reduction motor needs to be noted:
1. The machine with low speed and high torque should adopt the current limiting protection method to prevent the damage to the gear reducer caused by the blockage.
2. When the motor is in instantaneous reversal, it will produce a large current, which will affect the life of the motor, and switch when the motor is completely stopped.
3. If it is difficult to avoid blocking when used, please inform the company in advance and take necessary measures.
4. In order to control the interference signal of the motor when using the remote control, the capacitance of 0.1uf (63V) can be welded between the positive and negative poles, and the negative electrode is grounded.
5. The low blocking torque of permanent magnet dc motor is 5-6 times of the rated torque, and should be avoided in the installation, debugging and use.
2. In selecting permanent magnet dc speed reduction motor, it is necessary to note:
1. Select the motor prototype experiments conducted before use in batches, confirm the rated speed, rated torque, voltage, current conditions, if close to can choose reasonable thought, can be used. If the deviation is large enough to be replaced, the service life and quality cannot be guaranteed.
2. Reasonable selection of the basic conditions of gear reduction motor is rated voltage, rated speed and rated torque;
3. The parameters of each model is introduced in the table of the performance index of the highest efficiency point refers to the rated speed and rated torque, for reference to choose from, the rated working point of gear reduction motor is the important basis of motor design, in rated working near its efficiency is highest, the most stable performance;
4. In the big reduction under the condition of low speed reference to get table of maximum allowable load and rotating speed, the maximum allowable load and speed under the condition of operation can reduce the service life of the gear reducer gear reducer or direct damage.
3. It is necessary to pay attention to the installation of permanent magnet dc speed reduction motor:
1. Gear reducer output shaft installed accessories shall not be knock down hard, in order to avoid excessive shot move up and down, installing a circular gear box control over the length of the screw, the screw top is too long will die structure within the box body;
2. It is not possible to drive the reducer directly at the output end, which may cause the internal gear to be damaged;
3. Before installing the machine, check the electric test to check whether the performance conforms to the requirement for reinstallation. Do not remove the reducer by itself, so as to avoid affecting noise and quality;
4. The lead wire is not enough to pull, and the terminal should not collide and bend, otherwise it will cause internal conductive defects.
5. Electric welding wire end should be finished by computer, to use suitable soldering iron and solder welding line, can operate to quick and accurate generally suggest using 40 w iron, welding head temperature around 320 + 20 °, welding time 2-3 seconds. Too long welding time can cause the internal welding of the motor, resulting in poor power.
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