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M brick packaging equipment what are the cause of the asynchronous motor can't start

2020/08/23
M brick reasons of asynchronous motor can't start packing equipment what do you know? Vacuum packaging machinery motor can't start after the power supply is connected, is usually caused by drag mechanical gets stuck, starting equipment failure and fault reasons, several aspects, such as motor ontology should first check to make sure what the reasons for this.



1, when there is not starting packaging machinery motor, can use a multimeter or test pencil measure three-phase voltage electric transmission motor terminal.

2, if the three-phase voltage imbalance, or lack of phase, instructions on starting equipment failure; If the three-phase voltage balance, and packaging machinery motor rotation speed is slow and there is abnormal sound, may be overloaded motives but lived, disconnect the power plate moving motor shaft by hand. If the flexible rotation and balanced rotation, load mass; If the flexible rotation can't balanced, that is caused by the mechanical jam.

3, if the normal three-phase voltage and motor does not turn, is likely to be packaging machinery motor noumenon failure or jam. Should now make motor and drag mechanical release, plate of motor and drag the mechanical rotor respectively, separate starting motor, which on the one hand, can determine the fault belongs to further find the point of failure, and corresponding processing.



a when drag mechanical stuck, should cooperate machinery maintenance personnel disassemble to drag, troubleshooting, make its flexible rotation.

b when starting equipment malfunction, generally to check switch, contactor, contactor and terminal contact information; Check thermal relay overload protection contact closure and the adjustment of working current value is appropriate; Monitor the on-off of the fuse melts, after analyzing the cause of the fuse melts fusing, according to the requirement of the motor starting state to choose melt; If the starting equipment internal wiring error, should be in accordance with the schematic diagram to correct wiring.

c. When there is a failure in the vacuum packaging machinery motor ontology, should check whether there is any grounding on the stator winding, bearing is damaged. If it is winding turn-to-turn short circuit, grounding or local vacuum packaging machinery motor can start, but will cause melt fuse and stop rotation, short-circuit serious when vacuum packaging machinery motor winding will soon be smoking. If the vacuum packaging machinery motor winding circuit, should further find out the breaking point, and reconnect. Check whether there is any break on winding, insulation resistance meter, multimeter or lamp method to test.

with insulation resistance meter check winding insulation resistance to ground, if the winding grounding, insulation resistance meter indicates zero, should find the pick up location for repair.

with short circuit detector check the stator winding, if there is fault, number of turns coil burned, as should resume winding winding.



4, caused by damage of bearing automatic vacuum packaging machinery motor shaft channeling, sinking, rotor and stator rubbing card died, even a bearing should be replaced.

5, after the winding winding vacuum packaging machine, vacuum type packing machinery motor, if internal winding end wrong, should be examined to determine the beginning and the end of the three-phase winding, and make the right connections.

6, if vacuum packaging machinery motor noise without turning, generally is not plug in, use multimeter to check the voltages outlet terminals of the motor. Without electricity voltage or only one phase, that is not connected to motor power supply, voltmeter available at this time by the motor end has to check step by step, find out the fault and eliminate; If the voltage has been sent to the outlet terminals of the motor, and three basic equilibrium, but no sound without turning, the motor or motor internal break line, may be a neutral point is not connected or lead wire broken. According to the inspection methods of the winding short-circuit, find out the breaking point repair.

7, vacuum packaging machinery motor after turning on the power supply, a & other; Buzz throughout the &; Sound but did not turn, mostly belongs to fuse the melt fuse make motor open phase, power should immediately check to find out why, after replacement of the melt

8, power supply voltage is too low, or delta coupling misconnection into ya running motor coupling, and starting with load, should check the power supply voltage and motor wiring.
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