Issue 77: Hengyu Guoqiang reducer - reducer and motor smoke
Time：2018-09-28 | Source：恒宇国强 | Browse：89580
1. The motor voltage is too low or overloaded, the driven machine is stuck or the lubrication is poor
The problem is that the voltage is too low or the power line is too thin. Replacing the power line can increase the voltage. If overload occurs, the load should be reduced. Some cooling equipment can also be used to reduce the temperature and heat.
(TKM servo)
2. The motor is poorly ventilated or exposed to the sun
First of all, check whether the motor fan is damaged or not fixed tightly, pay attention to whether there are objects that affect the ventilation, and move away in time to avoid temperature rise.
3. The motor voltage is too high or the wiring is wrong
If it is found that the motor voltage is too high, the phenomenon of smoke will occur. At this time, the voltage should be reduced appropriately, and then check whether there is a problem in the wiring. If it is found, the circuit should be corrected immediately.
4. Broken bars of squirrel cage rotor
After confirming that the bar is broken, the motor rotor should be replaced to prevent other problems. If it has smoked, other parts should also be checked for other problems.
5. Frequent positive and negative rotation or too many starting times of motor
Properly reduce the number of positive and negative operation or starting times of the motor, or use other types of motor to reduce the damage of the generator.
6. The stator and rotor of the motor rub each other.
If the bearing is loose, replace it with a new one; Remove the rubbing parts of stator and rotor, and correct the center line of shaft.
(gear motor)
7. The motor stator winding is short circuited in a small range or the stator winding is partially grounded.
Turn on the motor, you can smell or observe whether there are burnt coils or parts. You can also touch the winding by hand, compare the temperature, find out the short circuit, and deal with it separately: use the test lamp or megger to find out the grounding, pad the insulation, and then brush the insulating paint to dry.
8. The centrifugal switch cannot be opened after the motor is started.
It can measure the total current or the circuit current of the secondary winding. It is concluded that the centrifugal switch is faulty and should be repaired or replaced.
Summary: there are about eight reasons for gear reducer and motor smoke: motor voltage is too low or overload, squirrel cage rotor broken bar, motor stator and rotor friction, centrifugal switch can not be disconnected after motor start, motor forward and reverse frequently or start too many times, motor voltage is too high or wiring error, but the problems still need to be analyzed in combination with the actual situation.
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