Siemens Reducer Gear Motor

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Q:AC servo motors generally choose synchronous or asynchronous?
This will be based on your purpose, such as CNC machine tools feed shaft, generally use AC synchronous servo motor, spindle general use AC asynchronous motor. The synchronous machine of the same power is more expensive than the asynchronous machine
Q:What's the difference between a three-phase AC motor and a two-phase one?
A three-phase induction motor consists of a stator and a rotor. Its stator winding is a three-phase symmetrical winding with symmetrical power supply. A two-phase motor is used to specify a motor with a 2 phase winding. Two-phase motor is divided into two categories: drive and servo. The Dan Xiang asynchronous motor used in most household appliances and small appliances belongs to two phase drive motors. Two phase servo motor for control, the stator's two phase windings are exciting windings and control windings respectively, with a space difference of 90 degrees of electric angle.
Q:Is the motor in the inverter air conditioner a direct current motor?
Inverter motor with "special AC variable frequency induction motor + inverter", the degree of automation and high production efficiency of equipment miniaturization, increase comfort, is currently replacing the traditional mechanical control and DC speed control scheme.
Q:What is the influence on the motor when AC motor is connected to direct current?.
1200W 1000W with the inductive load inverter to drive the inverter to the protection of course; if you can be satisfied with the speed of 48V, then open 1-2 minutes to see the motor temperature, if the temperature is not high for a 4-5 minutes, if 4 minutes motor is hot, it shows that in 48V under the condition of Soybean Milk machine you can only open 4 minutes.
Q:Does the AC motor have carbon brushes?
Yes。 Carbon brush for AC motors: carbon brushes can be used in direct current motors or AC commutator motors or slip rings as sliding contacts for introducing current
Q:Why are DC motors more powerful than AC motors of the same power?
Because the motor armature circuit resistance and inductance are small, and the rotating body has certain mechanical inertia, so when the motor is switched on, starting the beginning of the armature speed and anti electromotive force of the corresponding small starting current, large. Up to 15~20 times the rated current. This current will disturb the power grid, the unit will be subjected to mechanical shocks, and the commutator will spark. Therefore, the direct closing start is only applicable to motors with power not greater than 4 kW (starting current is 6~8 times the rated current).
Q:The difference between a direct current motor and an alternating current motor
The principle of AC motor is complex, but the structure is relatively simple, and it is easier to maintain than the direct current motor. The direct current motor introduces the current into the rotor armature through the brush and commutator, so that the rotor is forced in the stator magnetic field to rotate. AC motor (AC asynchronous motor to commonly used as an example) is the alternating current into the stator winding, resulting in a rotating magnetic field in stator and rotor air gap, rotating magnetic field induced current in the rotor winding, the rotor stress in the stator magnetic field generated in the rotation. DC motor speed control is simple, but the use of limited occasions. AC motor speed control is relatively complicated, but it is widely used due to the use of AC power supply.
Q:How to judge the quality of three-phase AC motor?
First of all, cut off the power supply, hand disk motor rotation, whether there are bearings stuck, rotor sweeping, and other mechanical faults.Remove the motor power line (U1, V1, W1, U2, V2, W2, U1, U2 respectively) measured with a multimeter, V1, V2, W1, W2 resistance, resistance is similar to the normal phase, if the difference is too large winding interturn short circuit, three-phase three-phase (also check the resistance between each other between the infinite resistance is normal) and ground (for housing) resistance.
Q:What are the advantages of a DC motor and an AC motor?
An AC motor is a machine used to convert mechanical energy and alternating current energy. AC motor has become the most common motor because of the great development of AC power system. Compared with the direct current motor, the AC motor has no commutator, so the structure is simple, the manufacture is convenient, the utility model is firm, and the motor with high rotating speed, high voltage, large current and large capacity is easy to be made. AC motors have a large range of power. AC motors are usually divided into AC generators, AC motors and synchronous regulators according to their functions. The precision spindle n AC reversible Henglin motor working state, the same motor can be used as a generator and motor. It is not very precise to divide the motor into generator and motor, but some motors are mainly used as generator, some motors are mainly motor operated.
Q:The difference and advantage between DC motor and AC motor
Alternating current dynamo:Advantages: 1.. Simple structure2. low manufacturing costs, 3. maintenance, simple economy.Disadvantages: can not speed up their own, you need to use frequency conversion equipment to achieve speed changes.

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