First, the grid voltage fluctuation should be controlled between +10% and -15%, while China's power supply fluctuates greatly, the quality is poor, and there are hidden interferences such as high-frequency pulses, plus human factors (such as sudden pull-off Power off, etc.). During peak hours, such as an hour or so before going to work during the day or at night, it is often more than ±20%. The machine is alarmed and cannot work properly, and damages the machine's power system. Lead to the loss of relevant parameter data. This phenomenon has occurred in machine tools such as CNC machining centers or turning centers, and the frequency of occurrence is high, which should be taken seriously.
It is recommended to configure an AC regulated power supply system with automatic compensation adjustment function in the workshop where the CNC machine is concentrated. A single CNC machine can be separately configured with an AC voltage regulator.
Second, it is recommended to connect mechanical and electrical equipment to a single power supply. If it is necessary to supply some parts of the electrical equipment (such as electronic circuits, electromagnetic clutches) with other power sources, these power sources should be taken as far as possible from the components (such as transformers, transducers, etc.) that are part of the mechanical and electrical equipment. For large complex machines, including many machines that work together in a coordinated manner and occupy a large space, more than one source of power may be required, depending on the configuration of the site power supply.
Unless the mechanical and electrical equipment is directly connected to the power supply with a plug/socket, it is recommended that the power cord be connected directly to the power supply terminal of the power disconnect switch. If this is not possible, you should set up a separate terminal block for the power cord.
The handle of the power cut-off switch should be easily accessible and should be installed between 0.6M and 1.9M above the easy-to-operate position. The upper limit is recommended to be 1.7M. This can quickly cut off power in the event of an emergency, reducing losses and casualties.
Third, the numerical control equipment for the compressed air supply system requirements CNC machine tools generally use a lot of pneumatic components, so the plant should be connected to a clean, dry compressed air supply system network. The flow and pressure should meet the requirements. The compressed air machine should be installed away from the CNC machine. According to the layout of the plant and the amount of gas used, it should be considered to install frozen air in the compressed air supply system network in coal machines, air filters, gas storage tanks, safety valves and other equipment.
Fourth, the numerical control equipment for the working environment requirements Precision CNC equipment generally has a constant temperature environment requirements, only under constant temperature conditions, to ensure machine tool accuracy and processing. Generally, ordinary CNC machine tools have no specific requirements for room temperature, but a large number of practices have shown that the failure rate of the numerical control system is greatly increased when the room temperature is too high.
