Wholesale of Heat Treatment Cycle Controllers

TG-3A Heat Treatment Cycle Controller

The frequency controller is mainly used in the control system of electric heating, receiving 4-20mA signals from temperature control instruments or PWM signals from island power instruments. Through the frequency controller, it controls how many waves of voltage are output within a certain period. The output signal is voltage used to control the on/off of solid-state relays, thereby achieving a stable control temperature value.

Usage Introduction:

The widely used SSR signal processing controller in industrial electric heating systems can accept PWM or 4-20mA inputs, generate two types of outputs: cycle zero crossing (PWM duty cycle control) and cycle zero crossing (CYC variable cycle), and directly drive SSR or Ruike Jinfeng SSR power expansion board. It has the functions of hard manual operation and auxiliary power adjustment, with zero crossing output of * frequency. Due to the uniform distribution of load current in a sine wave, the randomness and superposition of multiple equipment operation result in a relatively balanced total power load current. It improves the adjustment accuracy and power utilization efficiency, as well as avoids meter needles and power equipment capacity expansion, and has a significant energy-saving effect.

Temperature control principle:

The frequency controller receives signals from the temperature controller (or upper computer), and the signal conversion circuit

Convert this input signal into a unified digital quantity. Pulse width modulator based on this number

Determine the "conductivity" of the thyristor and then determine a smaller one based on this "conductivity"

Relative operating cycle "and the time required for the thyristor to conduct during this cycle. Frequency control

The device allows the thyristor to conduct for the time it needs to conduct during a "relative operating cycle". Zero crossing touch

The generator always triggers the thyristor when the main circuit voltage crosses zero during the time when it needs to conduct,

Achieve the effect of conducting a "complete cycle" or a "complete half wave".

In short, the frequency controller determines the "conductivity" based on the input signal and simultaneously determines the

Short 'relative operating cycle' and the number of cycles that need to be conducted during this cycle, based on these controls

The conduction of the thyristor achieves the purpose of changing the heating power. The relative operating cycle of this instrument is not

More than 1 second

TG-3A Heat Treatment Cycle Controller

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