When coupled with a time proportioning control, they operate in a series of full ON-OFF cycles known as time proportioning burst firing. The time proportional control accepts many control output signals and converts them into a time proportional signal determining the amount of full ON and full OFF cycles. A smooth power output to the load is therefore produced and the temperature, stabilized.
An SCR power switch differs from other switches in its fast action. Indeed, while a contactor may cycle 3 times per minute, our SCR may do it approximately once per second. This fast SCR cycle time results in a final temperature closer to the desired set point and therefore reduces energy costs.
Unlike traditional mechanical control, the SCR modulates small increments of power to the load, and eliminates the overshoot and undershoot associated with mechanical control.
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