1: What is the difference between servo motor and general motor?
The biggest difference between servo motors and general motors is the motor rotor and reaction equipment. The surface of the rotor of the servo motor is pasted with a strong magnetic plate, so that the magnetic field generated by the stator coil** can control the orientation of the rotor, and the acceleration and deceleration characteristics are much higher than those of ordinary motors. The reaction equipment can be oriented to the servo drive of the reaction motor rotor, and the commonly used reaction equipment of the servo motor is optical encoder, resolver, etc.
2: Can the input power supply of the servo drive be connected to a single-phase 220V?
Delta servos can be connected to single-phase/three-phase 220V power supply below 1.5KW (inclusive), and only three-phase 220V power supply can be connected to 2.0KW (inclusive) or more. The quality of the DC waveform rectified by the three-phase power supply is better, the DC power supply of bad quality will consume the energy of the capacitor on the bus, and the capacitor will charge and discharge the bus to insist on the stability of the bus voltage when the motor accelerates and decelerates rapidly, so the characteristics of the three-phase power input servo will be better than that of the single-phase power input servo, and the current provided by the three-phase power input is also greater.
3: Is it possible to exchange the UVW three-phase output from the servo drive to the motor?
No, the connection between the servo drive and the UVW motor is **. Generally, when the input power supply of the asynchronous motor UVW is exchanged in two phases, the electric timing is reversed, in fact, any two-phase exchange motor of the servo motor UVW will also be reversed, but the servo motor has a reaction device, so that the positive reaction will cause the motor to fly. The servo drive will detect and avoid flying, so what we see after the UVW is connected to the wrong wire is that the motor turns an angle at a very fast speed and then alarms the ALE06 for overload.
4: Why does the servo motor need to be servo on before it can operate?
The servo drive does not output current to the motor when it is energized, so the motor is in a relaxed state (the hand is able to turn the motor shaft). After receiving the Servo on signal, the servo drive will output the current to the motor, so that the motor is in a situation of electrical insistence, and only then can it receive the instruction to act, and it will not act when the instruction is not received, even if there is an external force to intervene (the hand does not move the motor shaft), so that the servo motor can complete the first positioning.
5: How to deal with the alarm ALE14 when the servo drive is powered on?
The ALE14 is a forward limit anomaly alarm, because the maintenance DI points such as the forward and reverse limits set by the factory parameters and the urgent abort are normally closed contacts, and will alarm when there is no signal. When the upper controller has connected these maintenance signals or may not need these maintenance signals, the alarm can be eliminated by the following methods: the parameter P2-15 is set to 122 or 0, or the DI point may be shorted directly.
6: How to deal with the alarm ALE11 when the servo drive is powered on?
The causes of ALE11 alarms are: encoder wire wiring error, motor encoder fault, driver hardware fault.
7: How to deal with the alarm of servo drive ALE06?
The causes of the ALE06 alarm are: the UVW line connection phase sequence is wrong, the load is too large, the gain setting is too high, and the motor encoder is abnormal. After the parameter P0-02 is set to 11, the uniform load rate of the servo motor can be supervised on the drive panel, if the uniform load rate continues to be more than 100%, the overload alarm will be presented, and the overload characteristics of different motors can be found in the technical manual.
8: How to deal with the alarm ALE09 of servo drive?
The reasons for the ALE09 alarm are: insufficient motor output due to lack of phase of UVW wiring, low gain setting, low torque constraint, high command frequency or too large electronic gear ratio causing the motor to reach * high speed constraint (P1-55), motor encoder failure.
9: What is the reason why the motor is still running after the pulse command is completed?
The pulse command slip parameter P1-08 is set too large, resulting in a severe lag in the command, and the motor is still running after the command is completed. The operation of the motor can be seen through the built-in oscilloscope function of Delta's servo software to monitor the command pulse and the encoder response pulse. When the electronic gear ratio is relatively large, the appropriate setting parameter P1-08 can make the motor run more smoothly.
10: How to deal with the alarm of servo drive ALE04?
When the AB series servo drive is equipped with ECMA motor, the power mismatch will alarm ALE04 when it is powered on, in addition to this case, the alarm ALE04 will be caused as soon as it is powered on, which is the fault of the motor encoder. If the ALE04 alarm is displayed during use because the encoder signal is disturbed, check whether the encoder wire is shielded twisted pair, whether the ground wire between the driver and the motor is connected, or whether the encoder wire is covered with a magnetic ring. After ALE04.EXE software, it can monitor whether the AB pulse count of each Z-pulse azimuth changes, and will alarm if there is a change.
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