Why does a step in a motor have a lot of heat
There are several reasons for stepper motor fever: The current of the actuator is larger than that of the motor. The speed of the motor is too fast. The inertia of the motor and the torque of the positioning torque are high, so even the medium speed can be hot, but it does not affect the life of the motor Motor demagnetization points in 130-200 ℃, so the motor in the 70-70 ℃ belongs to the normal phenomenon, as long as less than 130 ℃, generally do not have what problem, if you really feel overheated, sent the current set of drive motor about 70% of the rated current or speed reduce some.
The reasonable range of the step motor's heating? It is. The degree to which the electric motor can be heated depends on the internal insulation level of the motor. Internal insulation can be damaged at high temperature (130 degrees). So as long as the internal is not more than 130 degrees, the motor will not be damaged, and the surface temperature will be below 90 degrees. As a result, the surface temperature of the stepping motor is normal at 70-80 degrees. A simple temperature measuring method is useful for a thermometer, and it is also a rough judgement: you can touch one to two seconds with your hand, not exceeding 60 degrees. You can only touch it with your hands, it's about 70 to 80 degrees. A few drops of water quickly vaporize, and more than 90 degrees.
Any motor will be hot, just a different degree of heat. For all kinds of stepping motors, the interior is composed of iron core and winding coils. Winding resistance, electricity will produce loss, the loss is proportional to the square of the size and the resistance and current, this is the copper loss, we often say that if the current is not a standard dc or sine wave, will also produce harmonic loss; The core has a hysteresis vortex effect, which also produces loss in the alternating magnetic field, which is related to material, current, frequency and voltage, which is called iron loss. Copper damage and iron loss are shown in the form of fever, which affects the efficiency of the motor. Stepper motor general pursuit of position precision and torque output, the efficiency is low, the current is compared commonly big, high harmonic components, the frequency of the alternating current is also change with speed, thus stepping motor are widespread fever, than the general ac motor serious condition.
If you use a driver, you can turn the current down a little bit. The larger the current, the higher the heat, but the greater the corresponding torque, the temperature will not exceed its range
