Important prerequisites for the operation of steel plate pre-treatment lines
The requirements of the electrical control system for the production machinery and the production process are met to a large extent. The basis for the design of the electrical control system is mainly derived from the requirements of the production machinery and the production process.
Mechanical design and electrical design should cooperate with each other. Many production machinery using a combination of mechanical and electrical control to achieve the control requirements, so we must coordinate the relationship between mechanical and electrical from the process requirements, manufacturing costs, structural complexity, ease of use and maintenance.
Electricity is invisible to the eye, whether a device is charged or disconnected, it is impossible to distinguish from the outside, which requires the setting of a variety of audio-visual signals, such as lights and sound, electrical monitoring of primary equipment.
Light and sound signals can only qualitatively indicate the working status of the equipment (with or without power), if you want to quantitatively know the working condition of the electrical equipment, you also need to have a variety of instrumentation measuring equipment to measure various parameters of the line, such as voltage, current, frequency and power magnitude, etc.
Contactor or relay coil, etc. by the current shock, the coil will be easy to burn out, will be on the contactor or relay controlled by the electrical circuit is damaged and can not continue to operate continuously.
If the coil is not burned out, but a contact point in the electrical system is burned out, it may cause the contact points to be connected together and cause a short circuit in the circuit.
Another situation is a short circuit due to dust blocking the line connection or the spring of the contact point is not flexible and there is a short circuit condition.
The main functions of the electrical part are: to drive the oil pump motor to supply power to the hydraulic part; to supply electric heating power and to automatically control the injection temperature, to supply power to the mold adjusting motor, to adjust the fixed mold position of the injection molding machine and to supply power to the program control Russian action.
Program control, according to the action cycle diagram to provide a variety of control signals for the combination of computing, amplification, feedback and output control voltage control solenoid valve coil and other loads.