The starting frequency of the Flat Screen Printer should not be too high. This is because the speed of the equipment is zero when it is started. During the starting process, in addition to overcoming the load resistance torque, the electromagnetic torque overcomes the inertia masking of the rotating part, so it starts. When the burden on the equipment is heavier than continuous operation, what effect will the startup frequency be too high? Let's take a look at it below.
If the pulse frequency of the flat screen printing machine is too high, the speed of the rotor can not keep up with the speed of the stator magnetic field rotation, so that the position where the first step is completed is far behind the equilibrium position, and the rotor speed increases little in the subsequent steps. The stator magnetic field still rotates forward at a speed proportional to the pulse frequency, so the distance between the rotor and the equilibrium position becomes larger and larger, and finally the step of the rotor falls outside the dynamic stability zone and the phenomenon of out-of-step or oscillation occurs. The motor does not start.
The starting frequency of various flat screen printing machines is different. Focus on micro stepping motor and stepping motor driver industrial control product program experts suggest that the starting frequency should be determined according to the motor description data. Many high starting frequency motors use dual voltage operation to start. The instantaneous change from high voltage to low voltage, and the smaller the step size, the more suitable for high frequency start, the higher the power, the more suitable for high frequency operation.
In order to start normally, the starting frequency should not be too high. When the flat screen printing machine starts, the frequency is gradually increased.