1. If the forward and backward speed control handles of the gantry machining center rotate to the right end and the speed does not reach a, then the reason is insufficient voltage rejection in the excitation circuit, excessive negative voltage feedback, and other reasons.
2. The negative pressure is often caused by an open circuit inside the 200-s, -F. The original voltage between 200V-SY-F is less than one-half of the generator voltage, 200V-S, -F After the time is opened, the voltage between the two points is basically equal to the generator voltage, which is doubled on the original basis.
3. During the transition process, the overshoot of the gantry machining center must be paid attention to. In these processes, the rotation speed depends on the maximum overshoot of the process and is positioned as IF. For example, if the overshoot occurs, then we need to reduce it appropriately. Just press it.
4. In the production process of the gantry machining center, after the workbench cannot be pulled, the reason is that the current positive feedback is caused, and more serious is the current positive feedback is converted into a negative feedback phenomenon, which will cause the workbench to pull The phenomenon of immobility. Therefore, it is necessary to carefully check the feedback of the positive and negative levels, so that when the speed is below 10m/min, the speed drop after the knife does not exceed 1 is the bes