Overview of Hot Runner Temperature Control Box:
The hot runner temperature control box is a temperature controller for hot runner systems. It connects temperature control cards, air switches, boxes, fans, equipment terminal blocks and cables that hold the required temperature values to maintain the stability of the hot runner system. The temperature control box uses built-in temperature control cards to detect the temperature of the hot runner system and adjust the output power to maintain a stable target temperature.
As the name suggests, the hot runner temperature control box is used to control the internal temperature balance of the hot runner system. It is one of the essential "four cornerstones" of the hot runner system. It is interdependent with the hot runner system, but relatively independent. Its precision and stability greatly affect the entire hot runner system, and the quality of the hot runner system also affects the precision, stability, and service life of the temperature control box. Usually, it is controlled by temperature control cards, chassis, heavy-duty connectors, and power line terminal blocks.
The temperature control box is a device that maintains the required temperature value. It mainly detects the temperature of the hot runner through the intelligent computer chip in the watch core and outputs the appropriate proportional current value through the internal data processing of the intelligent computer. As far as temperature control is concerned, the accuracy and stability of temperature control mainly depend on the following important factors:
Temperature measurement: sampling period parameters, data filtering to determine temperature, temperature compensation of the measurement circuit, etc. to determine temperature measurement accuracy;
PID control: adjust the output current ratio through PID parameters, including proportional parameters, integration time, and differential time;
Automatic adjustment: provide the dominant function of analyzing the capacitance of the heating wire and the thermal constant of the mold (with latent heat and heat dissipation functions, it helps to precisely control the temperature regardless of the environment;
Output mode: can be changed according to the environment;
SSR mode: can achieve precise temperature control, but the power supply noise is much larger than PWM mode.
PWM mode: has less current noise, but the temperature control ability is worse than that of SSR mode.