Because the rotor of a permanent magnet synchronous motor has magnetic steel and is inherently magnetic, it is different from the copper (aluminum) rotor of an asynchronous induction motor. The following points should be noted when using a permanent magnet synchronous motor:

1. During handling, storage and installation, it should be kept away from strong magnetic or high-temperature objects. People with pacemakers should stay away from the strong magnetic rotor.

2. When assembling an asynchronous motor with the shaft, the rotor can generally be heated and then fitted onto the shaft. There are two ways to install a permanent magnet synchronous rotor: most manufacturers cool the shaft first, and then fit the rotor and shaft together. This installation method may, on the one hand, cause the shaft to expand after installation and damage the rotor; on the other hand, if the rotor and shaft need to be disassembled later, it is very inconvenient. The Swiss e+a synchronous rotor adopts a unique taper and sealing design and is assembled by hydraulic means. This not only avoids the hidden dangers caused by temperature differences, but also facilitates later disassembly and replacement.

3. If a permanent magnet synchronous motor is equipped with an encoder, the phase angle between the motor and the encoder must be measured and set correctly; otherwise the system is prone to alarming.

4. The back electromotive force of a permanent magnet synchronous motor is a very critical parameter. If the back EMF changes or is inaccurate, it will cause deviations in the motor's power/torque/current.